How to troubleshoot when unable to connect to Redis remotely?

There are several possible reasons and solutions for resolving Redis remote connection issues.

1. Firewall blockage: Check the firewall settings of the server to ensure that the port for Redis (usually 6379) is open. If using a Linux server, you can use the following command to open the port:
2. Grant access to port 6379 using ufw.
3. Issue with binding IP addresses: By default, Redis binds to the local IP address. If remote connection is needed, the Redis configuration file needs to be modified.
4. Locate the redis.conf file (usually in the /etc/redis/ directory).
5. comment out the line “bind 127.0.0.1” or change it to “bind 0.0.0.0” to allow connections from all IP addresses.
6. Save the file and restart the Redis service.
7. Authentication password incorrect: If a password is set up for Redis (via the requirepass configuration option), make sure to provide the correct password when connecting remotely.
8. Networking Issue: Make sure your internet connection is working properly, and try using the ping command to check the server’s connectivity.
9. ping
10. The Redis service is not running: Check if Redis has been properly started, you can use the following command to check if the Redis service is running:
11. Please check the status of the Redis service.
12. Incorrect Redis configuration: Check if the Redis configuration file has correctly set the port, bind IP address, authentication password, and other relevant options.

If the above methods do not solve the problem, it may be due to other reasons that cannot connect. You can check the Redis log file (usually located in the /var/log/redis/ directory) to further investigate the issue by looking for error messages.