sshd logs

[danieleades]

i'm trying to debug an SSH authentication issue. How can I get server-side logs?

[501st-alpha1]

I ran into this issue too, and couldn't find anything under /var/log in the container, and nothing showed on the output when running the container in the foreground.

I think the cause of this issue is the same as hinted at in this Unix.SE question: Alpine doesn't come with rsyslog or other necessary services by default, while sshd tries to log to rsyslog by default.

I didn't want to deal with installing extra services, so I tried to find another way to do it. I found this ServerFault answer:

Use -e command-line option

I tried setting that as the command for the container by starting as docker run ... gitolite sshd -D -e, but it wasn't working. Then I realized that this repo's docker-entrypoint.sh overwrites the arguments passed to sshd:

docker-gitolite/docker-entrypoint.sh

Lines 4 to 5 in 76019b4

	if [ "${1}" = 'sshd' ]; then
	set -- /usr/sbin/sshd -D

Editing that line and adding -e to the end finally fixed the issue; I now see logs from sshd in the Docker output.