redis sentinel not starting /etc/redis-sentinel.conf is not writable: Permission denied

Question

redis sentinel was running fine after installation. Now it's not starting up with the following error in the logs.

"Sentinel config file /etc/redis-sentinel.conf is not writable: Permission denied. Exiting..."

Answer 1

if you replace the conf file, make sure user "redis" has permissions to /etc/redis-sentinel.conf

see the file permissions

Answer 2

selinux set to enforcing mode was preventing redis sentinel from starting up after a reboot of the instance.