Why isn't systemctl starting redis-server on CentOS 7?
Finally, fixed it. Systemd requires redis to run non-daemonised, so the config needed to change:
# /etc/redis.conf daemonize yes # << comment this out
Just to add to the accepted answer, I recently updated
redis and encountered the same problem. The configuration file
/etc/redis.conf already had the line
daemonize no and I still had that problem.
I fixed it by telling
redis to interact with the supervisor
# /etc/redis.conf supervised auto # or systemd
For reference, the system I was using was running Arch Linux.