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How do you do "configtest" and "graceful" with systemd/systemctl (trick question, you cannot, use old init.d scripts)

by ck2 12y ago

Shish2k 12y ago
How do you do "configtest" and "graceful" with old init.d scripts? # /etc/init.d/mysqld configtest Usage: /etc/init.d/mysqld {start|stop|status|restart|condrestart|try-restart|reload|force-reload} # /etc/init.d/mysqld graceful Usage: /etc/init.d/mysqld {start|stop|status|restart|condrestart|try-restart|reload|force-reload}
- ck2 12y ago
  configtest and graceful are "commands" used by other scripts such as httpd (apache) and nginx scripts which can take alternate signals to do other actions but even in your example, condrestart, try-restart, those aren't supported by pure systemd scripts - however if you were using the init.d version you could do the easy-to-remember/type service mysqld condrestart Fortunately with 7.0 you can keep using the old init.d scripts and custom commands, hopefully that will never go away with any of the later 7.x versions (I don't see why).
nailer 12y ago
I'm not a systemd expert, but for configtest, you could add a 'Config' parameter and patch systemd to record the hash of each config file at start time. From then on, all .services, ever, that supplied their Config would be able to do a configtest and condrestart. DRY. What's 'graceful'? A particular signal?
jrslack 12y ago
>trick question, you cannot [Unit] Description=The Apache HTTP Server After=remote-fs.target nss-lookup.target [Service] Type=notify EnvironmentFile=/etc/sysconfig/httpd ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND ExecReload=/usr/sbin/httpd $OPTIONS -k graceful ExecStop=/usr/sbin/httpd $OPTIONS -k graceful-stop KillSignal=SIGCONT PrivateTmp=true [Install] WantedBy=multi-user.target and 'apachectl configtest' or 'nginx -t' iirc
frio 12y ago
Why would I do a `configtest` with a thing that starts or stops a service in the first place? That's what `apachectl configtest` or whatever is for. I wouldn't expect to go to Windows' list of services, right click one and run arbitrary commands either.

How do you do "configtest" and "graceful" with systemd/systemctl (trick question, you cannot, use old init.d scripts)

by ck2 12y ago

How do you do "configtest" and "graceful" with systemd/systemctl (trick question, you cannot, use old init.d scripts)

How do you do "configtest" and "graceful" with old init.d scripts? # /etc/init.d/mysqld configtest Usage: /etc/init.d/mysqld {start|stop|status|restart|condrestart|try-restart|reload|force-reload} # /etc/init.d/mysqld graceful Usage: /etc/init.d/mysqld {start|stop|status|restart|condrestart|try-restart|reload|force-reload}

ck2 12y ago
configtest and graceful are "commands" used by other scripts such as httpd (apache) and nginx scripts which can take alternate signals to do other actions but even in your example, condrestart, try-restart, those aren't supported by pure systemd scripts - however if you were using the init.d version you could do the easy-to-remember/type service mysqld condrestart Fortunately with 7.0 you can keep using the old init.d scripts and custom commands, hopefully that will never go away with any of the later 7.x versions (I don't see why).

nailer 12y ago

I'm not a systemd expert, but for configtest, you could add a 'Config' parameter and patch systemd to record the hash of each config file at start time. From then on, all .services, ever, that supplied their Config would be able to do a configtest and condrestart. DRY. What's 'graceful'? A particular signal?

jrslack 12y ago

>trick question, you cannot [Unit] Description=The Apache HTTP Server After=remote-fs.target nss-lookup.target [Service] Type=notify EnvironmentFile=/etc/sysconfig/httpd ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND ExecReload=/usr/sbin/httpd $OPTIONS -k graceful ExecStop=/usr/sbin/httpd $OPTIONS -k graceful-stop KillSignal=SIGCONT PrivateTmp=true [Install] WantedBy=multi-user.target and 'apachectl configtest' or 'nginx -t' iirc

frio 12y ago

Why would I do a `configtest` with a thing that starts or stops a service in the first place? That's what `apachectl configtest` or whatever is for. I wouldn't expect to go to Windows' list of services, right click one and run arbitrary commands either.