Home / ubuntu / Questions / 1409756
Accepted
Ani
Asked: 2022-05-21 20:51:28 +0800 CST

Unable to get service rate limiting to work with systemd 237

  • 772

I have read the systemd man pages and also some Q&A here related to StartLimit*

I tried what is recommended for newer versions:

[Unit]
StartLimitBurst=5
StartLimitIntervalSec=90

[Service]
RestartSec=5
Restart=always

Also, what is supposed to work for older versions of systemd:

[Service]
StartLimitBurst=5
StartLimitInterval=90
...
RestartSec=5
Restart=always

(this is still accepted and systemd-analyze does not show any errors)

But neither of this works! i.e. my daemon keeps indefinitely restarting I can see NRestarts also showing the correct count.

I am on version systemd 237 on Ubuntu 18.04 (Bionic). I don't mind using either format, but I want to make sure that the restart attempt is capped to 5 or 6 times and no more.

systemd

1 Answers

  1. Best Answer

    I think the configuration you shared works. You probably need to share more details about the service.

    Here are the test steps I ran. I used Ubuntu 18.04 (systemd 237-3ubuntu10.53).

    Create a basic shell script to run as a service.

    cat <<EOF > /usr/local/bin/myservice.sh
#!/usr/bin/env bash

sleep 1
exit 0
EOF

    Create a basic service.

    cat <<EOF > /etc/systemd/system/my.service
[Unit]
StartLimitBurst=5
StartLimitIntervalSec=90

[Service]
ExecStart=/bin/bash /usr/local/bin/myservice.sh
RestartSec=5
Restart=always
EOF

    Start the service.

    systemctl daemon-reload
systemctl start my.service

    The logs indicate the service was started 5 times and then went into a failed state.

    systemd[1]: Started my.service.
systemd[1]: my.service: Service hold-off time over, scheduling restart.
systemd[1]: my.service: Scheduled restart job, restart counter is at 1.
systemd[1]: Stopped my.service.
systemd[1]: Started my.service.
systemd[1]: my.service: Service hold-off time over, scheduling restart.
systemd[1]: my.service: Scheduled restart job, restart counter is at 2.
systemd[1]: Stopped my.service.
systemd[1]: Started my.service.
systemd[1]: my.service: Service hold-off time over, scheduling restart.
systemd[1]: my.service: Scheduled restart job, restart counter is at 3.
systemd[1]: Stopped my.service.
systemd[1]: Started my.service.
systemd[1]: my.service: Service hold-off time over, scheduling restart.
systemd[1]: my.service: Scheduled restart job, restart counter is at 4.
systemd[1]: Stopped my.service.
systemd[1]: Started my.service.
systemd[1]: my.service: Service hold-off time over, scheduling restart.
systemd[1]: my.service: Scheduled restart job, restart counter is at 5.
systemd[1]: Stopped my.service.
systemd[1]: my.service: Start request repeated too quickly.
systemd[1]: my.service: Failed with result 'start-limit-hit'.
systemd[1]: Failed to start my.service.
    • 1