However, errors may arise during the attempt to merge the virtual machine disk files. These errors can often be resolved straightforwardly.

Consolidation of Virtual Machine Disks in VMware

To clear the “Virtual machine disks consolidation is needed” status, you must consolidate the virtual machine disks.

1. Select the Virtual Machine that requires Disk Consolidation.
2. Click the Action button and hover over the Snapshots option.
3. From there, select Consolidate. A confirmation prompt will appear; click Yes.
   

Errors You Might Encounter During Consolidation

During disk consolidation, you might encounter an error stating, “The content ID of the parent virtual disk does not match the corresponding parent content ID in the child”. This error occurs when the chain of virtual disks to be consolidated has differing Content-IDs and cannot be merged.

Another possible error is “Unable to access the file since it is locked”, which happens when the virtual machine is running, snapshot operations are being performed, or third-party services used by the virtual machine lock the file.

FIX: The Content ID of the Parent Virtual Disk Does Not Match the Corresponding Parent Content

Firstly, copy the hostname of the affected virtual machine and input it into the PuTTY configuration window, a free SSH client available for download. This will open a terminal.

NOTE: Be aware that the procedure described below carries the risk of corrupting the virtual drive and should only be attempted if you understand partitioning schemes.

1. Launch the PuTTY Configuration window and enter the Host Name of the virtual machine with the error.
   
2. A terminal will open, where you should log in using the credentials of your virtual machine.
   
3. Change your directory to where the virtual machine’s disk files are stored using the command “cd /vmfs/volumes/DatastoreName/VmName”, replacing ‘DatastoreName’ and ‘VmName’ accordingly. Then type “ls” to display all the virtual disks.
   
4. Next, you must identify the two conflicting virtual disks. To do this, type “cat vmware.log”.
   
5. Look for the “DISKLIB-LINK” text in the log file. Note the disk names indicated in this line as they represent the disks with mismatched Content IDs.
   
6. View the Content IDs of the identified “.vmdk” files using the ‘cat’ command, such as “cat disk2-000001.vmdk” or “cat disk2.vmdk”.
   
7. To modify a disk’s ID, use the ‘vi’ command, like “vi disk2-000001.vmdk”. Copy the ID from “disk2.vmdk” and paste it into “disk2-00001.vmdk” as its new ParentCID.
   
8. Replace the ParentCID with the correct Content ID, then press the escape key and input “:wq!” to save and exit. You can now proceed with disk consolidation.
   

FIX: Unable to Access File Since It Is Locked

To remedy the “Unable to access file since it is locked” error, restart the services.sh script. This will refresh all services using the virtual machine’s disks, eliminating obstacles and allowing the consolidation process to complete.

Restarting the services will temporarily idle the virtual machines, permitting the consolidation to occur without interference.

1. Open the PuTTY Configuration window and enter the Host Name of the virtual machine causing the error.
   
2. In the opened terminal, log in as the ‘root’ user and execute “services.sh restart”.
   

Upon completing these steps, you should be able to successfully consolidate your virtual machine snapshots.

The post How to Fix ‘Virtual Machine Disk Consolidation is Needed’ Error in VMware? appeared first on Appuals.

This error indicates that the website’s server could not communicate effectively with the back-end services. It is commonly triggered by updates to plugins, server OS, or extensions. Because it’s a server-side problem, clients can only attempt to refresh the website in their browsers.

Basic Troubleshooting

1. Reload the Browser Page: Temporarily resolve the error 503 by refreshing the page a few times.
2. Server Status: Verify if the host server is down or undergoing maintenance.
3. Backup: Ensure that you have a backup of the server, website, and database to prevent data loss while troubleshooting.
4. Reload or Restart Services and Server: Try reloading or restarting services, such as Varnish, and if the error remains, consider restarting the server.
5. Update: Check that all related services, applications, and server OS are up-to-date.

3. Check the Website Health and Resources 

Insufficient storage or resources on a website can cause the backend fetch failed issue due to the inability to carry out necessary operations.

1. Navigate to the WordPress dashboard and select Tools > Site Health > Info.

   

2. Assess whether the storage is nearing its limit. If so, you may need to add more storage or purge unnecessary items. In some cases, it might be necessary to upgrade your plan.
3. Make sure that other server resources are not being overwhelmed and that resolving this issue eliminates the error.

4. Check the Resource Availability

Attempting to access an absent resource on the backend server will result in an error message. Your reverse proxy might report this as a 503 backend fetch failed error.

1. Check the URL or code and determine which resource it is trying to access.

   

2. Verify the availability of the requested resource on the server. If absent, upload the resource to the appropriate location.
3. If the problem continues, ensure the action being executed doesn’t attempt to load the entire website. For instance:

   .request ="GET HTTP/1.1"

   Revise the command as follows:

   .request ="GET /sitehealth.html HTTP/1.1"

5. Change the Cloudflare Settings

Suboptimal Cloudflare settings can cause an error 503 by restricting access to backend server resources. Changing these settings can rectify the issue.

1. Access the Cloudflare dashboard and go to Security > Make Changes on Elementor.
2. Copy the IP displayed and go to WAF > Tools.
3. Click Edit next to your website entry and add the IP to the allowed list.

   

6. Increase the Server Time-Out Limit

If the backend server’s response time is longer than what the reverse proxy is set to wait for (timeout), a backend fetch error will occur. Increasing the server’s time-out limit can address this problem. This may vary, but in Varnish, it can be done by:

1. Navigating to the Varnish configuration. For example:

   /etc/sysconfig/varnish

2. Editing the VCL Conf file to increase the wait time to, say, 300s (the default is often 60s):

   first_byte_timeout = 300s

   

3. Save changes and verify if the error persists.
4. If the error began following a Varnish config change, revert to an older, functional configuration if available.

7. Edit the Health Check Settings of the Website

The backend error may arise if the reverse proxy cache, like Varnish, is unable to access, or perceives the backend server health check information as faulty. The resolution is to repair the health check settings of the website:

1. Remove the following line from your configuration if it exists:

   .url="/health_check.php"

   

2. Verify if the problem has been resolved.
3. If not, deploy varnishlog to identify what is being marked as unhealthy and address it accordingly.

   sudo varnishlog -g request -q "VCL_call eq 'BACKEND_ERROR'"

8. Revert the PHP Version of the Server

If a recent PHP version upgrade is incompatible with your website’s backend, a 503 error may be triggered. Reverting to a prior PHP version can solve the issue. For example, on Bluehost with WordPress:

1. Proceed to the Bluehost dashboard and select the Advanced tab.
2. Within cPanel, navigate to MultiPHP Manager in the Software section and select the affected website.
3. Change the PHP Version back to the earlier version and verify if the error has been resolved.

   

9. Disable Plugins, Utilities, Extensions, and Themes

When a plugin, utility, extension, or theme is incompatible with a server setup, a 503 error may result. Mitigate the error by disabling them and re-enabling one at a time to pinpoint the troublesome element.

For instance, to disable GZip on the Jira Service Desk, which has been known to cause a 503 error:

1. Head to the Jira dashboard and select Admin > General Settings > Use GZip Compression.

   

2. Disable GZip compression and see if it resolves the error.

10. Disable the CSP Module on Magento

The Content Security Policies (CSP) module provides security for Magento applications. If the CSP module is incompatible with your current setup, it can trigger a 503 error.

Disabling the CSP Module on Magento could solve the issue:

1. Launch Terminal and run the following commands successively:

   php bin/magento module:disable Magento_Csp
   php bin/magento c:f

   

2. After execution, check if the error 503 has been corrected.

11. Change Host Header, Child Tag, and Port Configurations

Backend fetch errors can also stem from overly large host headers, improperly configured child tags, or incorrect port configurations. Editing these settings might rectify the error.

Add a .host_header Property

1. Implement a .host_header property for the backend server to ensure probes are directed to the correct host.

   

2. Embark on debugging to inspect the incoming host header details within the logs.

Remove Child Tags from Magento

1. Access this file:

   Magento\ConfigurableProduct\Plugin\Model\Product

   

2. Expunge the child tag from the header and evaluate if the error is resolved.

Remove Ports from the Docker Compose

1. Locate the Docker Compose and navigate to the Default.vcl file.

   

2. Replace ports with the service name as depicted below:

   client:
   image: ...
   ports: <-- remove
   - target: 80
   published: 8080
   mode: host

   Adapt the Default.vcl accordingly:

   backend default {
   .host = "client";
   .port = "80";
   }

3. Examine if this amendment resolves the issue.

12. Use a Systematic Approach

If all previous steps have failed, a systematic approach should be employed to isolate the cause of the error 503.

Check Logs

1. Scrutinize the logs associated with reverse proxies, PHP, backend servers, or hosting configurations for any irregularities that might instigate the error 503.

   

2. If an anomaly is detected, rectify the underlying issue to eliminate the error.

Do a Full Conflict Test

Perform a full conflict test if your setup permits, to discover any potential conflicts. If any conflicts arise, resolve them to clear the backend fetch error.

Directly Access the Backend Server

If you are utilizing a reverse proxy like Varnish, bypass it and try directly accessing the backend server. If this method works, the issue likely lies with the reverse proxy setup. Consider the following steps if direct access is successful:

1. Assess the cache tags’ length used by Magento—especially relevant for stores with many products—as they might exceed the default limit set in Varnish (typically 8192 bytes). To rectify, modify the http_resp_hdr_len (e.g., to 70000 bytes) in Varnish’s configuration. Correspondingly, adjust Varnish’s http_resp_size.

   

2. Ensure that the health_check.php file is in the right directory or modify the Varnish configuration to point to the accurate location. The default may be /pub/health_check.php, but for Nginx servers, it may need to be changed to /health_check.php.
3. For Magento sites, if a maintenance.flag file exists, try deleting or renaming it and then refresh the website to see if the error is resolved.
4. Investigate the Product Rules within Magento through a backtrace to identify any invalid outputs that may be causing the error.

If these methods are ineffective, strip down the website to its most fundamental elements, such as an index file with some placeholder content. Gradually reintroduce features to determine which one triggers the error 503. If the problem continues, reach out to the appropriate support channels for assistance, be it WordPress Support, Magento Support, or the hosting provider’s customer service team, such as Hostinger Support.

The post How to Fix Error 503 Backend Fetch Failed on Your Website? appeared first on Appuals.

The issue may also occur when the modem is moved to a different location or when you replace an older modem with a new one. Sometimes, the issue is intermittent—the modem blinks blue and white, switches to solid blue, and then resumes the blinking cycle.

According to Spectrum’s light indicator patterns, blinking white and blue lights indicate that the modem is unable to find or lock onto a signal. Correspondingly, the router may display or blink a red light, signaling a lack of connection.

1. Check the Service Status of Spectrum

A flashing blue and white light on your Spectrum modem indicates that it isn’t receiving any signal from Spectrum, which could be due to a service outage or maintenance on the company’s end.

Note: Use an alternative internet source, such as a mobile hotspot or mobile data, for this step.

1. Launch a web browser and visit the Spectrum Maintenance Update page.
2. Verify whether there is any ongoing scheduled maintenance. If so, wait until the maintenance concludes. The My Spectrum app can also be used to check for scheduled service maintenance.

   

3. If no maintenance is reported, consult the DownDetector Spectrum page to check for any service outages, and if one is present, wait for services to resume.
4. In the absence of outages on the above platforms, consult local social media channels (e.g., local Facebook groups) to investigate any reported service disruptions.

2. Wait for the Completion of the Firmware Update

Flashing blue-to-white lights on the Spectrum modem, accompanied by sequential flashing of power, online, and voice lights, can indicate a firmware update is in progress. In such cases, waiting an hour for the update to complete may resolve the issue.

A firmware update may commence following a power cycle or restart of the modem, which could be the reason for the lights flashing.

1. Wait for an hour without powering off or cycling the modem.

   

2. Check if the flashing light issue has been resolved after the wait.

3. Power Cycle the Modem

A Spectrum modem may flash blue and white if an essential firmware module fails to load correctly or crashes during execution. Power cycling the modem can rectify this issue.

1. Open the Spectrum app and navigate to Services > Internet > Modem > Experiencing Issues.
2. Select Reset Modem. After the modem restarts, assess whether the issue persists.

   

3. Unplug the modem’s power adapter from the outlet and immediately plug it back in.

   

4. After the modem powers on, check to see if it no longer flashes blue and white.
5. If the issue persists, unplug the modem’s power adapter again and wait for 5 minutes.
6. During this time, switch off any associated networking equipment (such as UDM Pro or routers).
7. Reconnect the power adapter and allow the modem to power on completely before checking if the issue has been resolved. The remaining networking equipment can be powered on afterward.
8. If these steps are ineffective, try plugging the power adapter into a different power source (avoiding extension cables or surge protectors) and observe whether the problem is resolved.

If the issue still remains and you own a combination device (a modem with an integrated router), resetting the device to factory defaults might solve the problem.

4. Accept Terms & Conditions on the Spectrum Website

You may be required to accept new terms and conditions on Spectrum’s website or app to activate your connection and cease the flashing blue and white lights, especially if your connection is new or there has been a recent change in Spectrum’s policies.

1. Open a web browser and visit the Spectrum website.
2. Log in using your credentials. If prompted, accept the new terms and conditions, provided you agree with them.

   

3. After accepting, power cycle the modem and check if it operates correctly.

5. Check/Reseat the Cables/Connections

A flashing blue and white light could be the result of a damaged cable or loose connection preventing the signal from reaching the modem. Inspecting and reseating the cables and connections may address the issue.

1. Unplug the modem’s power adapter and inspect the coaxial cable connected to the modem’s back.
2. Examine the cable’s entire length for any breakage or damage (such as from pets). If damaged, replace the cable yourself or contact Spectrum support.
3. If no visible damage is found, reseat all connections, including those at the back of the modem, at the splitter, and from the wall jack.

   

4. Reconnect the power adapter and check if the modem’s online light is stable once it is powered on.

6. Try Another Network Outlet

A faulty network outlet could prevent the modem from receiving a signal, resulting in flashing lights.

1. Power off the modem and disconnect the cable from the current network outlet.
2. Connect it to a different network outlet. You may need to explore other areas of your premises to locate an alternative.

   

3. Once connected, power on the modem and wait for 5 minutes to determine if the flashing issue has been resolved.

7. Try Another Splitter

A defective splitter may also cause the Spectrum modem issue. Replacing the splitter could resolve this. If you have access to a different splitter, it’s worth testing it.

1. Power off the modem and disconnect the cables from the splitter.
2. Connect the cables to the new splitter, ensuring that each cable is inserted into the correct port.

   

3. Power on the modem and check if the light flashing issue is settled.

8. Replace the Coaxial Plug

A malfunctioning coaxial plug cannot transmit signals to the modem properly, resulting in the modem’s lights flashing. This can be remedied by replacing the plug.

A wire stripper and cable crimper are recommended. Additionally, make sure you have a compatible coaxial plug for your setup.

Caution: Attempt this method only if you feel competent to do so; otherwise, seek professional assistance.

1. Unplug the modem’s power cord and detach the network cable from the modem’s back.
2. Disconnect the plug from the wall jack and remove it from the cable.
3. Trim away part of the wire that was attached to the plug.
4. Gently cut around ¾ inch of the outer jacket (white or black) without harming the inner shielding.

   

5. Cut and fold back the shielding, leaving about 1/8 inch, and lay the internal shielding over the outer jacket. Leave a ¼ inch gap from where the jacket was cut. Exercise caution, as the shielding can be sharp.

   

6. Trim off ¼ inch of the white plastic insulator to expose the inner copper wire without nicking it.

   

7. Slide the plug’s ring onto the end of the cable and push it down.
8. Continue sliding until it encapsulates both the shielding wire and the outer jacket.

   

9. Ensure the white insulator contacts the internal hold of the plug, with the copper wire visible within the connector.
10. Crimp the plug’s end to fasten the cable. A crimping tool is recommended if available.

    

11. Reconnect the plug to the wall outlet and the other end to the modem.
12. Restore power to the modem and ascertain that it is functioning correctly.

If the steps above seem challenging, consider buying a pre-assembled cable with the plug attached.

9. Check the Activation of your Account and Modem

An inactive account or modem not properly provisioned to your account can also lead to the flashing light issue.

1. Contact Spectrum via chat or phone.
2. Request them to verify the activation status of your account and the modem’s provisioning.

   

3. If your account and modem are not active, ask them to initiate the activation process, which should resolve the issue.

If the problem continues, you may need to request Spectrum support to arrange a technician visit to examine whether the issue is related to damaged external cabling, which can occur due to various factors like inclement weather or construction work. It’s also possible that the modem itself is defective and requires replacement.

The post How to Fix a Spectrum Modem with Flashing Blue and White Lights appeared first on Appuals.

It is crucial for one to understand how to log in to their Arris router and configure its settings. In this article, let’s walk through the essential steps of configuring your Arris router login and how to manage your network effectively.

Why You Might Want to Log in to Your Arris Router

Logging into your Arris router opens up a ton of customization options when it comes to network management. Here are some compelling reasons why you might want to access your router’s settings:

• Security: To ensure the security of your network and protect it from unauthorized access or cyber threats, logging in to your router allows you to manage passwords, conceal SSIDs, and perform other security-related tasks.
• Performance: Enhance your network’s speed and stability by optimizing its settings. You can configure your router to operate on 2.4GHz, 5GHz, or both bands.
• Customization: Personalize your network by customizing its name (SSID) and password or by configuring advanced features to suit your preferences.
• Troubleshooting: Quickly diagnose and resolve network issues by accessing your router’s settings.

READ MORE: What is the Alljoyn Router Service & How to Remove It?

Arris Router Default Username and Passwords

To log in to your Arris router for the first time, you’ll need the default usernames and passwords. Typically, these are:

• Default username: admin
• Default password: password
• Default IP address: 192.168.0.1 / 192.168.1.1

In some cases, you may also find this information on a label on the back of the router or on its packaging. We highly recommend changing these default login credentials the first time you access your router’s settings to enhance your network’s security.

How to Log in to Arris Router

Now that you have the username and password to log in, let’s get into the details. Follow these steps to log in to your Arris router.

Step 1: Connect to Your Router

Well, before logging in, ensure that your computer or mobile device is connected to your Arris router’s network. You can do this by either connecting via Wi-Fi or using an Ethernet cable.

Step 2: Open the Administrator Portal:

Next, head over to your preferred web browser—be it Chrome, Safari, Edge, Firefox or any other browser of your choice—and enter the router’s IP address in the address bar.

The default IP address for Arris routers is usually 192.168.0.1 or 192.168.1.1.

Step 3: Enter the Login Credentials:

Once you press Enter, you will be redirected to the router’s login page. Here, enter the default username (admin) and password (password). If you’ve previously changed these credentials, use the updated ones.

Step 4: Access Router Settings

Once you’ve entered the right credentials, you will have access to your Arris router’s settings page. From here, you can customize various network parameters and security settings.

How to Reset Arris Router:

If you’ve forgotten your login credentials or need to start fresh, you can perform a factory reset on your Arris router. Here’s how to reset your Arris router:

1. Locate the reset button on your router. It is usually a small, recessed button that may require a paperclip, a sim ejector tool, or a similar tool to press.
2. Press and hold the reset button for about 15-30 seconds until the router’s lights start flashing. This indicates that the router is being reset.
3. Once the reset process is complete, your router will return to its default settings, including the default username and password.

READ MORE: What Does WPS Button on a Router Mean? ➜

How to Change Wi-Fi Network Name (SSID) and Password on Arris Router

If you enjoy personalizing your Wi-Fi network name, whether it’s your own name or a fun character reference, customizing your SSID (Wi-Fi network name) is a great way to add a personal touch to your network. Additionally, changing your password is essential for enhancing security.

We have a dedicated guide on how to change Wi-Fi password and SSID that you can check out as well. Otherwise, follow these steps to modify your SSID and password on Arris router:

1. Open a new Browser window and log in to your Arris Wi-Fi router using the steps mentioned above.

2. Next, navigate to the Wireless tab from the top, and then choose Wireless 2.4Ghz or Wireless 5Ghz based on the frequency you use, within the router’s configuration page.

   

3. Locate the Wireless Network Name SSID and Pre-Shared Key (Password) fields. Edit these fields to your desired values.

   

4. Save your changes by clicking on Apply, and your router will apply the new settings.

Your Wi-Fi network will now be broadcast with the updated SSID, and a new password will be required for access.

READ MORE: Setup and Configure a New Router for your Home (Updated 2023) ➜

Conclusion

In conclusion, understanding how to log in to your Arris router and make necessary configurations is important for maintaining a secure and speedy network.

Whether you need to enhance your network’s security, optimize performance, or personalize your Wi-Fi settings, accessing your Arris router’s settings page is the first step one needs to take.

The post Arris Router Login: Default Name, Password & IP Address appeared first on Appuals.

Meaning of 500 Internal Server Error in Nginx

Like other software applications or servers, Nginx can encounter errors, which its built-in error reporting can identify. However, the 500 internal server error presents a unique situation. This error also appears on different web servers, such as Apache and IIS.

Error 500 is an HTTP status code indicating a server issue for which the root cause is unclear. Unlike other HTTP status codes, such as 403 (Forbidden) or 404 (Not Found), it doesn’t provide a clue about the potential cause.

How to Fix 500 Error on Nginx on the Client Side?

This error code represents a server-side issue that can typically be resolved on the server. However, in rare instances, your browser may contribute by creating a request the server can’t handle.

To verify the browser isn’t causing issues, open the website in a different browser, on another device, and on another network. If it works properly, clear the cache/data of the original browser and ensure that no browser extensions are causing the problem.

If the Nginx website still displays a 500 error, contact the server admin to resolve the issue.

How to Fix Nginx 500 Error on the Server Side?

This error could result from a simple syntax mistake to a backend application issue. As the error doesn’t disclose the root cause, its troubleshooting can be challenging. However, fear not, the systematic approach discussed below can resolve it.

1. Check Server Overload

If your server is overloaded, it may display the internal 500 error due to insufficient resources for essential tasks. Check the CPU usage, memory usage, and disk space availability using the Free, Top, or HTop command. The screenshot below illustrates the output after executing the top command.

If the server is overloaded, adding more resources should clear the Nginx 500 error.

2. Verify the Configuration Syntax

The most common cause of the 500 error on Nginx is incorrect server settings due to an error in the configuration syntax.

To fix this, go through the configuration files of Nginx and closely check the syntax for any errors or misplaced directives.

Next, review your Nginx configuration files for syntax errors or misplaced directives. Use commands such as nginx -t or nginx -t -c /path/to/nginx.conf to validate the syntax and identify any errors. Execute the following commands in the Terminal to detect any errors:

cd /etc/nginx/sites-available

nginx -t

You can also use the following:

nginx -t -c /path/to/nginx.conf

If any syntax errors are detected, fix those and execute the following to restart/reload Nginx:

sudo service nginx restart

nginx -s reload

In some cases, you may need to amend the configuration file as under:

try_files with try_files $uri =404

or

try_files $uri $uri/ /index.html; with try_files $uri/ $uri /index.php?$query_string;

3. Verify the Server Logs

When Nginx produces a 500 error, it also creates an entry in the internal error log, which can suggest the error’s root cause. Typically, server logs are located at:

/var/log/nginx/error.log

On a Linux distro, execute the following to open the server log:

cd /var/log/nginx

cat error.log

On the resulting page, you can go through to check for any indication of the root cause. For example, look at the image below:

This indicates the server couldn’t establish an SSL/TLS connection with the client due to an SSL certificate issue. After identifying a problem in the logs, you can research potential causes and solutions online.

If you can’t open the log due to a ‘permission denied’ error for the folder, modify the Nginx.conf file by replacing ‘user www-data’ with ‘user root.’ After saving the file, restart Nginx and reopen the log.

4. Disable Cloudflare or Similar Services Temporarily

If you’re using Cloudflare or a similar service on your server, and it’s incorrectly configured or conflicting with recent modifications, temporarily disabling it can help diagnose the issue.

1. Navigate to the Cloudflare dashboard and log in using your credentials.
2. Go to Overview and expand Advanced.
3. Click on Pause Website and confirm to do so. If your hosting provider has Cloudflare integrations, make sure they are also disabled.
4. Make sure you have the right IPs for the website and verify if the Nginx 500 internal server error is cleared. Remember to check both HTTP and HTTPS versions of the website.

   

5. Check the Server Certificates

If any of your certificates have expired or gone invalid in your current setup, this will certainly cause an internal server error.

1. Configure the Nginx to use the IP address of your website, not the domain name.

   

2. Disable SSL Verification in proxy_pass and add the self-signed certificate to it. You can create one in the Cloudflare Dashboard (SSL > Client Certificates).
3. See if the server is working correctly. If so, contact the certification issue authority or check your setup for any improper certificate configurations.

6. Check for any Backend Application Errors

If Nginx forwards client requests to another service, which fails to execute properly, it causes a 500 error. For instance, if the server forwards client requests to a backend application like NodeJS, and the application fails to function correctly, it results in the discussed error.

Remember, if the server log shows no errors, it typically indicates a backend issue.

To resolve this, inspect the backend application logs for any errors or exceptions. For instance, on WordPress, you’ll find the Node JS logs at:

/var/www/<your_site>.com/logs/error.log

7. Insufficient File Permissions

If the Nginx server lacks the necessary permissions to access or execute a file, it will cause a 500 error. For instance, an internal server error will occur on a WordPress site if the Nginx server can’t access or serve PHP or HTML files from the public_html folder.

To rectify this, you can modify the necessary Nginx permissions on the server-accessed files or directories using the chmod command, typically 755 for directories and 644 for files.

8. Verify Plugin Compatibility

Plugins crucially enhance server capabilities. But malfunctioning, outdated, or overly updated plugins may cause internal server errors. For example, updating WordPress can disrupt your website’s functionality as many plugins become incompatible until they are updated.

To resolve this, ensure that each plugin is compatible with the server software and other plugins. Although it may seem tedious, it’s worthwhile. Alternatively, try disabling all plugins to see if this eliminates the error.

If you recently updated your server software, try reverting to the previous version (if possible) to see if the error resolves. This will confirm if the update is causing the issue. You can delay the software update until all plugins have confirmed compatibility.

9. Check for a Faulty Script

Like plugins, scripts are crucial for certain website functionality. An invalid or updated script incompatible with the server environment can cause an internal server error.

You can solve this by disabling scripts and checking the Nginx server. If it works correctly, go through the scripts and try to find out the problematic ones.

10. Increase the Server Timeout Value

If the server timeout value is shorter than Nginx’s response time, you will encounter an internal server error. Similarly, if the server’s request takes longer than Nginx’s response time, the issue will occur.

Increasing your server’s timeout value should solve the issue. You can find specific instructions online.

11. Ensure all the Redirections are Working

Ensure all redirections are functioning correctly when Nginx operates as a proxy server. If the server cannot redirect a client request to the backend server, a 500 error will occur.

Temporarily disable all redirections to verify proper operation. If successful, reactivate each one individually to identify the faulty redirect. Once detected, research online to find potential causes and solutions for this specific redirection failure.

12. Using PHP with Nginx

Nginx doesn’t natively support PHP; therefore, PHP misconfigurations with Nginx can result in an internal server error.

To resolve this issue, verify the PHP integration with Nginx. If PHP display errors are disabled, the server will return an Nginx error 500 when PHP encounters an error. Enabling PHP errors can simplify troubleshooting.

On CentOS 7, execute the following:

tail -f /var/log/php-fpm/www-error.log

Alternatively, go to

/etc/php.ini

And change

display_errors = Off

to

display_errors = On

You may also look for a better PHP handler (such as PHP-FPM) and enable the Nginx cache.

13. Use the Bare Minimum Approach

If you still cannot clear the error 500, you can use the bare minimum approach to solve the problem.

1. Create a backup of your site and replace the site content with a simple index.html having some plain text.
2. Check if the website is working and start adding the directives, features, services, plugins, scripts, etc. one by one.
3. Make sure to test the site after each step and see if the problem reoccurs.
4. Add back the content to your site and see if the content is causing the issue.
5. Once the problematic element is found, you can fix it by searching the Internet.

How to Avoid the Future Recurrence of the Nginx 500 Server Error

You can take the following steps to avoid any recurrence of Nginx 500 error:

• Perform regular server maintenance.
• Make sure the website code and content (images, videos, etc.) are optimized for your setup.
• Establish a CDN to serve the website through its cache.

If you have a query, we are available in the comments section.

The post How to Fix “500 Internal Server Error NGINX” for Client & Server? appeared first on Appuals.

Now you can either get these services on your BT mobile or a BT broadband router like the Smart Hub. Since BT routers offer free Wi-Fi to those with BT mobiles, you might not want to share your router’s connection with them for some reason.

But for that, you will need to turn off BT-WiFi on your Smart Hub, Smart Hub 2, or any other model that you have. Today, we’ll be looking at how to do this on Smart Hub 2.

Just for your information, your home broadband bandwidth will be the utmost priority, and any roaming BT Wi-Fi user won’t be preferred over you. This means your internet speed won’t slow down.

Also, keep in mind that opting out of BT Wi-Fi will disable your permission to use BT Wi-Fi spread across millions of hotspots in the United Kingdom.

How do I Disable BT Wi-Fi on My Smart Hub 2?

Opting out of BT WiFi is a very simple process and can be done from any internet browser. I will list down all the steps below:

1. Open any web browser and log in to MyBT.
2. Select Your Products and go to the Included in your product section.

3. Click Learn More inside the BT Wi-Fi section.

4. Now click Opt out of BT Wi-Fi.

After opting out, there’s always the option to join them again by signing up for BT once more. The steps will be the same as the first time you signed up for the broadband service.

If you’re unable to go through any step, then write it down in the comments below, and we’ll look into the matter. Moreover, you can contact BT Support for further information related to any issue with your BT Wi-Fi, BT mobile, or BT broadband.

The post How to Turn OFF BT Wi-Fi on your Smart Hub 2 appeared first on Appuals.

This article will delve into URIs and URLs, exploring their differences, relation, and uses.

What Is URI and URL?

URI: Acronym for Uniform Resource Identifier, URI is used to identify a resource such as an image or video on the web.

URL: Acronym for Uniform Resource Locator, URL is used to locate a resource such as an image or video on the web.

Still not clear about the concept? Let me explain with an example: You go to the public library near your home and ask the librarian, “Do you have the novel The Hobbit?” The librarian replies, “Yes, it is on Shelf 3, Row 7 in the Fiction section.” You go to Row 7 in the Fiction Section and find the novel there. In this example, “The Hobbit” is the URI as it identifies the book, and “Shelf 3, Row 7 and Fiction Section” is the URL as it locates the book in the library.

How are URL and URI Related?

URL and URI are closely related to one another. In most cases, the URL is a subset of the URI. This is because while URI is used to identify the resource, it can also contain the address of the resource. Whereas the URL only contains the address of the resource but does not identify the resource.

SEE ALSO: How to Find Your IP Address on Windows & Mac ➜

As you can see in the illustration above, all URLs are URIs, but not all URIs are URLs. This is because there is also another subset of URI known as URN, but we won’t be discussing it as it would only further complicate the idea.

URL vs Hyperlinks

Another thing to clarify is the difference between URLs and hyperlinks (links for short). Many people confuse both of the terms and think they are the same. However, this is not the case. As we know from before, URLs locate a resource on the internet. HyperLinks, on the other hand, is an HTML element that allows you to navigate between different URLs on the web. Let me show you an example:

“If you want to know about the best applications for insect identification, click here.”

In this example, the “here” hyperlink will use the URL of our article “The Best Bug Identifier Apps for Android & iPhone in 2023” and load it on your browser on a separate tab. Sometimes it might load in the same tab depending on the website settings, but you get the point.

Syntax of URL and URI

URL is the subset of URI, so their syntax is almost identical. Given below is the generalized syntax for both of them.

• Scheme: Scheme indicates the protocol or method used to access the resource. Typical schemes include “http,” “https,” “ftp,” “mailto,” and more.
• Domain: The domain name (or IP address) identifies the server where the resource is hosted. In this case, the resource was hosted at Appuals.
• Path: The path specifies the location and structure of the resource on the host server.
• Parameters: This is the additional information provided with the resource.
• Anchor: Anchor represents the specific resource on the hosting server. In this example, it was an image, hence .jpg.

These are the main parts of URI and URL; however, kindly note that most are optional. The only required URL parts are Scheme, Domain, and Path. The only mandatory part of a URI is the Scheme.

Difference Between URI and URL

Now that we have a general idea about URIs and URLs, let’s look at their fundamental differences:

Uses of URI and URL

We will mention some technical terms while listing the uses of URI and URL. Do not worry if you do not understand them. Those are intended for our technical audience.

URI

• URIs serve as resource identifiers, applicable to multiple types of resources on the web.
• They are used in technologies like XML namespaces to provide unique identifiers for elements in documents.
• URIs are used in distributed computing, naming resources in web services, APIs, and RESTful architectures.

URL

• URLs are important for navigating the World Wide Web, linking between web pages, and accessing resources online.
• URLs provide a complete web address, including the protocol, domain name, and path, providing the exact location and access to web content.
• URLs are used for search engine optimization (SEO) to help search engines rank web pages.

Conclusion

Hopefully, by now, you are pretty clear about URL and URIs, their differences, and their uses. We have tried to keep this article as simple as possible to be accessible to a broader audience. If you are still unclear or have any additional questions, feel free to drop them down below.

The post URI vs URL: Explainer, Differences, Relation & Uses [2023] appeared first on Appuals.

In this guide, we will explain what these logs are, how to access and download them using the router’s admin panel, and ways to implement them on routers that don’t store such data.

What are Wi-Fi Router Logs?

Most modern Wi-Fi routers keep track of browsing history and other important operational data by maintaining logs. These logs contain valuable information such as the websites visited, corresponding IP addresses, and timestamps of each visit. By accessing the router’s admin panel, individuals can review and analyze these logs to gain insights into the browsing activities on their network.

Find Your Default Router IP address

You will need your routers default IP address to access its admin panel. In Windows, you can easily find your default router IP address using Command Prompt. You can follow the steps below to find your default router IP address in Windows:

1. Press the Windows key on your keyboard or click on the Start button to open the Start Menu.
2. Type “cmd” (without quotes) in the search bar. This will search for the Command Prompt application.
3. Click on the Command Prompt app from the search results to open it.
4. In the Command Prompt window, type the following command and press Enter to execute the command.

   ipconfig

   

5. Scroll through the results and locate the entry that says “Default Gateway”. The value next to it represents your router’s IP address.

   

6. Take note of the IP address next to the “Default Gateway” entry. This will be your default router IP address.

Now that you have found your default router IP address, you can use it to access your router’s administration panel and configure its settings.

It’s important to note that the default router IP address may vary depending on the router model or manufacturer. If the above method does not work for you or you encounter any difficulties, you can refer to the router’s manual or contact the manufacturer’s support for further assistance.

Check Your Browsing History via Router’s Admin Panel

To check the browsing history on a Wi-Fi router, you need to access the router’s admin panel. In order to access the router’s admin panel, follow these steps:

1. Connect to the Wi-Fi network of the router you want to check the logs of.
2. Open a web browser on the connected device.
3. Enter the IP address of your router in the browser’s address bar.

   

4. Enter the login credentials for your router. These credentials are usually provided on the router or in the router’s documentation. If you haven’t changed the default login credentials, you can find them in the router’s manual.

   

5. Once logged in, navigate to the “Logs” or “History” section in the admin panel. The exact location may vary depending on the router’s manufacturer and firmware.

   

6. Look for options related to browsing history or logs. It may be labeled as “Internet History”, “Activity Logs”, or similar.
7. Review the recorded data, which usually includes the date, time, website URLs, and IP addresses of the visited websites. Some routers may also provide additional information such as the duration of each visit.

   

Analyzing the browsing history logs can provide valuable insights into the online activities on your network. By reviewing the recorded data, you can identify the websites visited, the frequency of visits, and even potential security threats. This information can be particularly useful for parents monitoring their children’s online activities or individuals ensuring their own browsing history remains private.

Note: Most Wi-Fi routers provided by your ISP don’t log specific URLs but just IP addresses of Websites accesed on the Wi-Fi network and times of each visit; even some routers don’t even log that. So this method will differ from router to router. Using a Parental Control Software can be useful if your Wi-Fi router does not support this method.

Monitor Your Browsing History using Parental Control Software

If your Wi-Fi router does not log Browsing history, you can also employ parental control software to monitor and manage online activities. Most Parental control software offer additional features and flexibility in monitoring and restricting browsing history for specific devices or users on your network.

Benefits of Parental Control Software

Parental control software provides a range of benefits for monitoring browsing history:

• Customizable Restrictions: Parental control software allows you to set specific restrictions and filters based on age appropriateness or specific websites or categories.
• Time Limits: You can enforce time limits on internet usage, ensuring a healthy balance between online activities and other responsibilities.
• Real-Time Monitoring: Some parental control software provides real-time monitoring, allowing you to track browsing activities as they happen.
• Usage Reports: Detailed usage reports give you insights into the browsing habits of users on your network, helping you identify patterns or concerns.

Configuring Parental Control Settings

To utilize parental control software, research and select a reputable parental control software that suits your requirements.

Install the software on your devices or configure it on your router if it offers built in parental control features. Set up individual profiles for each user, specifying the appropriate restrictions and filters. Monitor the browsing history and activities through the parental control software’s interface or dashboard.

Monitoring and Restricting Browsing Activities

With parental control software, you can monitor and restrict browsing activities effectively:

• Browsing History Monitoring: Most parental control software provides a detailed browsing history report, including visited URLs, timestamps, and search queries.
• Website Blocking: You can block specific websites or categories deemed inappropriate or unsafe for the users on your network.
• Safe Search Filters: Enable safe search filters on search engines to prevent explicit content from appearing in search results.
• Time Management: Set time limits for internet usage, ensuring controlled access and promoting a healthy balance between online and offline activities.
• Remote Monitoring: Some parental control software offers remote monitoring capabilities, allowing you to monitor browsing history and activities even when you’re away from home.

By using a parental control software, you can have more granular control over the browsing history and activities on your Wi-Fi network, ensuring a safer and more secure online environment for everyone.

In conclusion, Monitoring your browsing history on your Wi-Fi network is essential for maintaining privacy, managing online activities, and ensuring a secure browsing experience. It’s always recommended to stay informed about the latest privacy practices and employ multiple layers of protection for a more secure online experience.

The post Guide: Check Browser History Stored on your Router appeared first on Appuals.

Pingdom, a SaaS-based web application performance and digital experience monitoring tool, is a product from SolarWinds. This powerful and versatile tool helps businesses proactively monitor their website performance. In doing so, Pingdom enhances visibility for web application performance and troubleshooting. Click here to download and try SolarWinds Pingdom!

Features Offered Pingdom

Pingdom is packed with the below features.

1. Uptime Monitoring
2. Real User Monitoring (RUM)
3. Transaction Monitoring
4. Page Speed Monitoring

Let’s explore all these features individually to gain a comprehensive understanding of how they contribute to efficient website monitoring.

Uptime Monitoring:

Ensuring the availability and accessibility of the website to visitors is important for businesses. By monitoring uptime, businesses can identify any potential issues and fix them before they create any major impact. Pingdom Uptime Monitoring regularly checks the availability of websites through over 100 probe servers available from different locations in four different regions: North America, Europe, Asia Pacific, and Latin America. You have the freedom to choose the region as per your business requirements.

Setting up uptime monitoring for your website is very easy and it is highly customizable. You can choose the protocol that you wish to use for uptime monitoring. Uptime monitoring also provides root-cause analysis for the websites in case they are down, which helps in troubleshooting. To learn how to set up uptime monitoring using Pingdom click here!

Real User Monitoring (RUM)

Pingdom’s Real User Monitoring (RUM) provides valuable insights into the user experience. RUM tracks the active sessions of the websites, the time taken by the pages to load, new sessions, and returning sessions, among other things. These insights can be used to identify any performance bottlenecks in order to optimize web pages and continuously enhance the user experience of the websites.

Transaction Monitoring

Pingdom’s transaction monitoring allows you to simulate and monitor user interactions on your website and get alerted in case any issues are observed in between the transaction flow. You can create step-by-step transactions that Pingdom wants to monitor on your website. This synthetic monitoring enables organizations to proactively identify and resolve potential issues before they impact real users. You can monitor essential functions like signup, login processes, shopping carts, and form submissions that are functioning correctly.

Page Speed Monitoring

Pingdom’s Page Speed Monitoring tracks the website’s load time using its advanced analysis technology. Pingdom can easily track exactly when each element loads on your website and what is slowing down your website. You can check the Load Size, Page Time, and Performance Grade based on the website’s page speed. Pingdom also provides details like which content type has a larger size. Using all these details you can identify the bottlenecks that affect your website’s speed and fix them to provide a better user experience.

Solarwinds Pingdom offers an effective solution for monitoring website performance. Uptime Monitoring ensures the availability and accessibility of the websites. Real User Monitoring (RUM) provides insights into the user experience for continuous improvement. Transaction monitoring allows you to simulate and monitor critical user interactions, identifying and resolving issues before they impact real users. Page speed monitoring enables the identification of performance bottlenecks, optimizing load times, and enhancing user satisfaction. By utilizing all these features you can proactively monitor and optimize the website’s performance.

The post How to Monitor Website Performance with Pingdom? appeared first on Appuals.

To achieve this, SolarWinds offers a SaaS-based web application performance and digital experience monitoring solution called Pingdom. Pingdom is a powerful and versatile tool that assists businesses in proactively monitoring their website performance. It enhances visibility of web application performance and facilitates troubleshooting. To download and try SolarWinds Pingdom, click here!

In this article, let’s discuss one of the features available in Pingdom, called “Uptime Monitoring”. We will introduce you to Pingdom’s uptime monitoring, demonstrate how to set it up, and show you how to check the uptime details of websites. Additionally, we’ll explain how to set up alerts and how to pull reports.

Pingdom Uptime Monitoring

Pingdom Uptime Monitoring regularly checks the availability of websites from more than 70 different global locations. It checks the availability of your website every minute and instantly alerts you if the website is not available. Additionally, Pingdom provides root cause analysis which contains vital information such as HTTP error codes, request contents, and traceroute details.

To set up uptime monitoring in Pingdom follow the below steps.

1. Login into your Pingdom web console.
2. Click on Synthetics Icon from the left pane menu.
   
3. Click on Add New.
   
4. Provide an appropriate name, select an appropriate check interval time by dragging and dropping the cursor, and then choose HTTP or HTTPS from the Web tab based on your requirement.
   
5. Enter the URL that you want to monitor and select from which region you want to check the website’s availability. Each region has multiple test servers from different locations to test the availability of the website.
   
6. Select the importance from the drop-down list and then select to whom you want to trigger the alert. We will discuss how to set up the recipient’s email address later in this article.
   
7. Select the threshold using the cursor, if Pingdom didn’t receive any response from the website after the threshold, it determines the website is down. Select after how many minutes you want to receive an alert if the website is down. You can alert resend interval as well.
   
8. Provide custom message for the Email alert if you would like to set up any. If you would like receive an alert once the website comes up check “Alert when back up”.
   
   Once done, click on Test Check.
9. Now, you will recieve a check ok message, then click on create check and save it.
   
10. Now the website is added to monitoring.
    
11. You can see the response time and uptime graph once enough details are collected by Pingdom.
    
12. Click on the website to check more details.
13. You can see availability graph, availability and down time percent. Also, You have option to check the availability of your website from any required duration. You can use the predefined values or choose any custom duration.
    
14. You can use the toggle key as well to switch between the days to check availability on a specific day.
    
15. Click on the Probe Filter to check availability from any specific location.
    
16. Scroll down to check the uptime monitoring log.
    
17. Click on Test Log to check the uptime data for the website from different locations.
    
18. Pingdom automatically delivers weekly reports to the Email IDs selected for the specific website monitoring check.
    

Scheduling Reports in Pingdom

If you would like to recieve daily or monthly reports, Pingdom provides options to schedule reports. Follow the below steps to schedule reports in Pingdom.

1. To schedule reports, click on Synthetics and then Email Reports.
   
2. Click on Add Email Report.
   
3. Provide an appropriate name for the report, and then enter the requried recipient Email addresses.
   
4. Select the report type you want and then select how frequent you want to receive the report.
   
5. Select the website check that you wish to receive in this report, or choose to view an overview of all uptime checks to receive a comprehensive report on all the websites. Once complete, click confirm to save the schedule.This is how we can scheduele reports in Pingdom.

Adding Recipients for Email Alerts

To add recipients Email addresses to alerts follow the below steps.

1. Click on Settings and then click on Alert Recipients.
   
2. Click on Add User to add Email address.
   
3. Click on Invite User.
   
4. Enter the user Email Address and select the role of the user, select Pingdom and then click on invite.
   
5. Mentioned user will recieve the below Email, they will start receiving alerts once they click on Accept Invitation.
   
6. You can also add mobile number to send the alert as a text message. To do that click on Add Contact.
   
7. Provide the details to receive the text alerts.
   
8. You can also create a team using multiple email addresses to use as a distribution list to trigger alerts. You can utilize this team to avoid typing multiple email addresses into the recipient details while creating an uptime monitoring check.
9. To create team, click on Teams.
   
10. Click on Add Team.
    
11. Provide an appropriate name for the team, and select the users.
    
12. Click on Add Team to create the team.
    
13. You can use the created team as alert recipients for Email Alerts.
    

This is how we can use SolarWinds Pingdom’s Uptime Monitoring feature to monitor website availability, ensuring the website is always accessible to customers and preventing any revenue loss due to unexpected outages.

The post How to Set Up Uptime Monitoring with Pingdom? appeared first on Appuals.