Question

Can't get memcached daemon to work post update of litespeed server.

service memcached status
● memcached.service - memcached daemon
   Loaded: loaded (/lib/systemd/system/memcached.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Sat 2020-05-16 23:46:47 UTC; 3s ago
     Docs: man:memcached(1)
  Process: 905 ExecStart=/usr/share/memcached/scripts/systemd-memcached-wrapper /etc/memcached.conf (code=exited, status=0/SUCCESS)
 Main PID: 905 (code=exited, status=0/SUCCESS)

May 16 23:42:00 openlitespeed-wordpress-ubuntu systemd[1]: Started memcached daemon.
May 16 23:42:00 openlitespeed-wordpress-ubuntu systemd-memcached-wrapper[905]: Could not open the pid file /var/run/memcached/memcached.pid.tmp for writing: Permission denied
May 16 23:46:47 openlitespeed-wordpress-ubuntu systemd-memcached-wrapper[905]: Signal handled: Terminated.
May 16 23:46:47 openlitespeed-wordpress-ubuntu systemd[1]: Stopping memcached daemon...
May 16 23:46:47 openlitespeed-wordpress-ubuntu systemd[1]: Stopped memcached daemon.
root@openlitespeed-wordpress-ubuntu:~# service memcached start
root@openlitespeed-wordpress-ubuntu:~# service memcached status
● memcached.service - memcached daemon
   Loaded: loaded (/lib/systemd/system/memcached.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2020-05-16 23:47:00 UTC; 3s ago
     Docs: man:memcached(1)
 Main PID: 1854 (memcached)
    Tasks: 10 (limit: 1151)
   CGroup: /system.slice/memcached.service
           └─1854 /usr/bin/memcached -m 64 -p 11211 -u www-data -l 127.0.0.1 -P /var/run/memcached/memcached.pid -s /var/www/memcached.sock -a 0770 -p /tmp/memcached.pid

May 16 23:47:00 openlitespeed-wordpress-ubuntu systemd[1]: Started memcached daemon.
May 16 23:47:00 openlitespeed-wordpress-ubuntu systemd-memcached-wrapper[1854]: Could not open the pid file /var/run/memcached/memcached.pid.tmp for writing: Permission denied

Any idea how to fix it?

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what if you do

nc -U /path/to/memcached.sock stats

and/or

telnet 127.0.0.1 11211 stats

what do they respond ?

It’s just an idea, if you remove the pid, will it work?

mv /var/run/memcached/memcached.pid.tmp /tmp
service memcached restart

Best, Eric