Monit not working with Redis -

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i configuring monit monitor redis , redis sentinel. every time monit run, logs both redis , redis sentinel not running , tries run them although both of them done. fails in starting redis processes.

whereas working system checks , nginx , other processes.

versions:

redis: redis server v=2.8.4 sha=00000000:0 malloc=jemalloc-3.4.1 bits=64 build=a44a05d76f06a5d9 monit: version 5.6

here configuration of monit redis (redis sentinel has same configuration):

# redis check process redis pidfile /var/run/redis-server.pid   group cache   group redis   start program = "/etc/init.d/redis-server start"   stop program  = "/etc/init.d/redis-server stop"   if failed host 127.0.0.1 port 6379 restart   if totalmem > 500 mb alert   if cpu > 60% 2 cycles alert   if cpu > 98% 5 cycles restart   if 2 restarts within 2 cycles alert   depend redis_bin   depend redis_rc  check file redis_bin path /usr/bin/redis-server   group redis   include /etc/monit/templates/rootbin  check file redis_rc path /etc/init.d/redis-server   group redis   include /etc/monit/templates/rootbin

here logs of monit:

[pkt aug 19 17:00:07] error    : 'redis' process not running [pkt aug 19 17:00:07] info     : 'redis' trying restart [pkt aug 19 17:00:07] info     : 'redis' start: /etc/init.d/redis-server [pkt aug 19 17:00:37] error    : 'redis' failed start

i think cause of issue other processes working fine owned root along directories , bin files. related redis own user "redis" group "redis". , why monit not able start or stop redis.

but have tried use adding user in start , stop settings this:

start program = "/etc/init.d/redis-server start"   uid redis , gid redis stop program  = "/etc/init.d/redis-server stop"   uid redis , gid redis

but didn't work either.

what doing wrong here? correct way monitor redis monit?

a couple of changes made make sure monit has access start/stop service , making sure have right pid file monit checks once restarts service. in case , configuration:

# redis check process redis pidfile /var/run/redis/redis-server.pid   group cache   group redis   start program = "/usr/sbin/service redis-server start" timeout 60 seconds   stop program  = "/usr/sbin/service redis-server stop" timeout 60 seconds   if failed host 127.0.0.1 port 6379 restart   if totalmem > 500 mb alert   if cpu > 60% 2 cycles alert   if cpu > 98% 5 cycles restart   if 2 restarts within 2 cycles alert   depend redis_bin   depend redis_rc  check file redis_bin path /usr/bin/redis-server   group redis   include /etc/monit/templates/rootbin  check file redis_rc path /etc/init.d/redis-server   group redis   include /etc/monit/templates/rootbin
  • the generated pid file path different on machine, recommend make sure right path on side.
  • i gave start/stop operation 60 seconds instead of default 30 second
  • a side note: used /usr/sbin/service redis-server instead of /etc/init.d/redis-server shouldnt make difference, tried both of them, , both work.

monit allows before timing out, make sure has amount of time respond service.

the output is:

[est nov 30 16:25:22] error    : 'redis' process not running [est nov 30 16:25:22] info     : 'redis' trying restart [est nov 30 16:25:22] info     : 'redis' start: /usr/sbin/service [est nov 30 16:27:22] info     : 'redis' process running pid 24864

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