'upgrader get SIGKILL by systemd + cgroup, how to avoid this

env:

  • a.rpm : include apiserver program
  • apiserver：api service program using github.com/gin-gonic/gin
  • upgrader: my upgrader program written by golang

purpose: upgrade a.rpm

step:

  1. use apiserver to upload upgrade file(*.tar.gz), then decompress tar.gz and execute nohup ./upgrader >/dev/null 2>&1 &
  2. upgrader will get SIGTERM from systemd when it execute rpm -e a or systemctl stop a to kill apiserver

I found it is triggered by cgoup. When apiserver.service is stopping, systemd will kill children by cgoup.

How to avoid this?

unixsignals


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