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If the /var/run (aka /run) folder doesn't exist for the PID file, cre…
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…ate it

CentOS 7 and many other recent Linuxes have switched to a non-persistent (tmpfs) /run folder, with /var/run being a symbolic link to the tmpfs /run mount.  The RPM creates the correct folder in /var/run for the PID file, but on reboot, that file is gone.  There are many ways to fix it.  This way will work on older systemd versions.
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@ekuns
ekuns committed Jun 24, 2015
1 parent 3ee00d2 commit 9c74f70
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4 changes: 4 additions & 0 deletions ...rces/com/typesafe/sbt/packager/archetypes/java_server/systemloader/systemd/start-template
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Expand Up @@ -9,6 +9,10 @@ ExecStart=${{chdir}}/bin/${{exec}}
Restart=always
RestartSec=${{retryTimeout}}
User=${{daemon_user}}
ExecStartPre=/bin/mkdir -p /run/${{app_name}}
ExecStartPre=/bin/chown ${{daemon_user}}:${{daemon_group}} /run/${{app_name}}
ExecStartPre=/bin/chmod 755 /run/${{app_name}}
PermissionsStartOnly=true

[Install]
WantedBy=multi-user.target

3 comments on commit 9c74f70

@LeifW
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@LeifW LeifW commented on 9c74f70 Apr 5, 2018

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What is the PID file for if you're using systemd?

@muuki88
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@muuki88 muuki88 commented on 9c74f70 Apr 5, 2018

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This change doesn't add a PID file, but a directory /var/run/{appName} that can be used for PID files.

The play framework by default creates a PID file, no matter what systemloader is in use.

This is not necessary for systemd, but provides a default infrastructure for an application that requires it.

@ekuns
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@ekuns ekuns commented on 9c74f70 Apr 5, 2018

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Since the play framework creates the PID file no matter what, as muuki88 said, if the folder containing the PID-file-to-be doesn't exist, the service will fail to start. While systemd doesn't require PID files, they are sometimes useful for scripts, so it's a double bonus to make sure PID files can be created.

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