How do I make systemd wait for a service to finish shutdown before shutting down another one?

ferdez

2/22/24, 9:42 AM

I have two services: mysql and liferay. Liferay start depends on mysql but liferay's shutdwon also depends on mysql. The problem is that systemd will shutdown mysql before liferay's shutdown is over. When I run "systemctl stop mysql" it will start shutting down both services at the same time and liferay will have no mysql service to finish it's own shutdown.

I have Liferay's service declared like this:

[Unit]
Description=Liferay Portal
After=network.target,mysql.service
Requires=mysql.service

[Service]
Type=forking
WorkingDirectory=/opt/liferay
ExecStart=/opt/liferay/liferay-ce-portal/tomcat/bin/startup.sh
User=liferay
Group=liferay
Restart=always

[Install]
WantedBy=multi-user.target

Any ideas?

TIA

Fernando

101

1 + 1

mysql

liferay

systemd

Gerald Schneider

2/22/24, 9:51 AM

According to [this quote from the docs](https://serverfault.com/questions/785127/how-to-stop-systemd-services-in-specific-order) `After=` should do the trick. I'd try removing the `Requires=` directive, it may override the `After=` behavior.

Score:0

Server

ferdez

2/22/24, 11:04 AM

As per Gerald's comment, it seems the answer is simply to remove the "Requires=".

This version does the trick:

[Unit]
Description=Liferay Portal
After=mysql.service

[Service]
Type=forking
WorkingDirectory=/opt/liferay
ExecStart=/opt/liferay/liferay-ce-portal/tomcat/bin/startup.sh
User=liferay
Group=liferay
Restart=always

[Install]
WantedBy=multi-user.target

Thanks Gerald!

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