Redis won't start due to port in use

[#1]

Version

Cb Response 5.x

Issue

Redis won't start and has this error message in /var/log/cb/redis/redis.log or /var/log/cb/redis/startup.log

Opening port 6379: bind: Address already in use

Cause

Another application or another instance of Redis is already using the port.

Solution

1. Stop services
   

   service cb-enterprise stop (if it’s a cluster, use “/usr/share/cb/cbcluster stop”)

2. See what is holding the port
   

   netstat -nlp |grep 6379

   Note: If the port is owned by cb and you just upgraded, follow this guide: Upgrading to 5.2 with a Custom Datastore Directory 
3. Otherwise kill the process to allow the cb-redis service to start
   

   kill -9 <PID>

4. Kill all cb owned processes
   

   killall -KILL -u cb

5. Start services
   

   service cb-enterprise start (if it’s a cluster, use “/usr/share/cb/cbcluster start”)