Error: php_network_getaddresses getaddrinfo failed redis

Solution

Troubleshooting "php_network_getaddresses getaddrinfo failed redis" Error

The "php_network_getaddresses getaddrinfo failed redis" error occurs when a PHP application is unable to resolve the hostname or IP address of the Redis server. This can happen due to various reasons, such as network connectivity issues, incorrect Redis server configuration, or DNS resolution problems. Here are the steps to troubleshoot and resolve this error:

1. Verify Redis Server Connectivity

• Ensure that the Redis server is running and accessible from the PHP application.
• Use the ping command to check if the Redis server hostname or IP address is reachable.
• If the ping command fails, there might be a network connectivity issue that needs to be addressed.

2. Check Redis Server Configuration

• Verify that the Redis server configuration, including the hostname or IP address, is correct in the PHP application's configuration.
• Ensure that the Redis server is listening on the correct port (usually 6379) and that the firewall is not blocking the connection.

3. Resolve DNS Issues

• If the PHP application is using a hostname to connect to the Redis server, ensure that the hostname can be properly resolved to an IP address.
• Use the nslookup command to check the DNS resolution of the Redis server hostname.
• If the DNS resolution is failing, check the DNS server configuration or consider using the Redis server's IP address instead of the hostname.

4. Check for Network Latency

• High network latency can also cause the "php_network_getaddresses getaddrinfo failed redis" error.
• Use tools like ping or traceroute to check for any network issues or high latency between the PHP application and the Redis server.

5. Restart the PHP Application and Redis Server

• As a troubleshooting step, try restarting both the PHP application and the Redis server to see if the issue is resolved.

6. Verify Redis Server Logs

• Check the Redis server logs for any error messages or clues that might help identify the root cause of the issue.

7. Use IP Address Instead of Hostname

• If the DNS resolution issue persists, try using the Redis server's IP address instead of the hostname in the PHP application's configuration.

By following these steps, you should be able to identify and resolve the "php_network_getaddresses getaddrinfo failed redis" error in your PHP application.