Redis found a problem when trying to create a connection with a client program, as shown by the message “redis error accepting a client connection (null)”. At Bobcares, we assist our customers with several queries on a daily basis as part of our Server Management Services.

Overview

1. Solving “redis error accepting a client connection (null)”
2. Common Causes & Fixes
3. Troubleshooting Steps

Solving “redis error accepting a client connection (null)”

Redis found a problem when trying to create a connection with a client program, as shown by this message. The “(null)” section shows that Redis was unable to find any specific data on the unsuccessful try at connection.

Common Causes & Fixes

Cause: Redis may be running low on CPU, memory, or file descriptors.

Fix: Check resource usage with monitoring tools or the top command. Scale up the server or optimize Redis config if needed.

Cause: Redis has a limit on maxclients setting.

Fix: Use the INFO CLIENTS command to check current ones. Increase maxclients if needed.

Cause: Permissions on the server or network may prevent connections.

Fix: Ensure Redis has the right permissions and that firewalls allow connections on Redis’s port (usually 6379).

Cause: Incorrect settings for the bind address or port can cause issues.

Fix: Double-check the Redis configuration for errors in the bind and port settings.

Cause: The problem may be with the client app.

Fix: Verify the client’s Redis server address and port config.

Troubleshooting Steps

1. Look for error messages around the time of the connection failure in the logs.

2. Use tools to assess CPU, memory, and file descriptor usage. Scale or optimize Redis if necessary.

3. Review the config file for consistency in the bind address and port.

4. Use a different client, like redis-cli, to see if the issue is with the original client app.

[Want to learn more? Reach out to us if you have any further questions.]

Conclusion

To sum up, our Support team went over the details of fixing this Redis issue.