3a8c6c8a introduced a new logic for killing journalctl. Unfortunately, it
doesn't work properly. In ostree tests, multiple journalctls are spawned
but there can be only one trap active at a time. This caused all but the last
journalctls to hang indefinitely. Unfortunately, hanging background processes
is something that causes the GitLab CI to hang indefinitely as well.
This commit modifies the logic a bit: The trap is still set. However, there's
also an explicit kill of journalctl after the compose is finished. After the
process is successfully killed, the trap is removed.
Signed-off-by: Ondřej Budai <ondrej@budai.cz>
sudo journalctl -af -n 1 -u "${WORKER_UNIT}" &
WORKER_JOURNAL_PID=$!
In this snippet, WORKER_JOURNAL_PID is set to the PID of the sudo process.
Sudo doesn't propagate any signals - therefore the child process of sudo
(journalctl in this case) isn't killed when a signal is sent to the parent.
Use pkill -P instead which kills all processes where sudo is the parent.
Signed-off-by: Ondřej Budai <ondrej@budai.cz>
