SystemD memcached service - (code=exited, status=1/FAILURE)

Question

So I had to deploy in Rocky Linux 8 memcached with SOCKET in /var/run/memcached

In order to avoid the service to fail, I have run the following:

systemctl edit memcached.service

Pasted in:

[Unit]
Description=Memcached
Before=httpd.service
After=network.target
[Service]
Type=simple
User=memcached
Group=memcached
# Run ExecStartPre with root-permissions
ExecStartPre=-/usr/bin/mkdir /var/run/memcached
ExecStartPre=-/usr/bin/chown -R memcached:memcached /var/run/memcached/
[Install]
WantedBy=multi-user.target

[root@cp monit.d]# service memcached status
Redirecting to /bin/systemctl status memcached.service
● memcached.service - Memcached
   Loaded: loaded (/usr/lib/systemd/system/memcached.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/memcached.service.d
           └─override.conf
   Active: active (running) since Thu 2022-10-13 15:23:50 CEST; 3s ago
  Process: 1336192 ExecStartPre=/usr/bin/chown -R memcached:memcached /var/run/memcached/ (code=exited, status=0/SUCCESS)
  Process: 1336188 ExecStartPre=/usr/bin/mkdir /var/run/memcached (code=exited, status=1/FAILURE)
 Main PID: 1336194 (memcached)
    Tasks: 10 (limit: 101049)
   Memory: 3.6M
   CGroup: /system.slice/memcached.service
           └─1336194 /usr/bin/memcached -p 11211 -u memcached -m 256 -c 1024 -s /var/run/memcached/memcached.sock -a 0770

Oct 13 15:23:50 cp.uhlhosting.ch systemd[1]: Starting Memcached...
Oct 13 15:23:50 cp.uhlhosting.ch systemd[1]: Started Memcached.

What would be a way to avoid this FAILURE?

ExecStartPre=/usr/bin/mkdir /var/run/memcached (code=exited, status=1/FAILURE)

Thank you!

score 1 · Accepted Answer · answered Oct 13 '22 at 20:16

What you're doing right now -- creating /var/run/memcached via ExecStartPre -- is fine, but the canonical way of handling this is via the systemd-tmpfiles service. You create /etc/tmpfiles.d/memcache.conf with the content:

D /run/memcached 0700 memcached memcached

This will create the directory /run/memcached (typically, /var/run is just a symlink to /run) whenever the system boots. This means you don't need to handle creating the directory in your service unit.

See also the tmpfiles.d man page and existing configuration files in either /etc/tmpfiles.d or in /usr/lib/tmpfiles.d.

SystemD memcached service - (code=exited, status=1/FAILURE)

1 Answers1