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Seeking help with a curl command in a bash script - SOLVED (lemmy.thewooskeys.com)

submitted 2 weeks ago* (last edited 2 weeks ago) by [email protected] to c/[email protected]

23 comments fedilink hide all child comments

I've got this command in a bash script:

TEST=$(curl -o /dev/null -s -k -w "%{http_code}" -u "${USERNAME}:${PASSWORD}" "${URL}/dashboard/")
echo "${TEST}" #debug

When the script runs, the output is "000".

When I run the same curl command from the shell, the output is "200" (which is correct, since the URL is valid).

I verified that the USERNAME, PASSWORD, and URL vars are being passed to the subshell.

I'd appreciate it if you could point out what I'm doing wrong here. :)

UPDATE: This has been solved.

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[–] rwdf 1 points 2 weeks ago (10 children)

Exit code 7 means curl couldn't connect to the host, so I would try just curling a URL you know is valid directly, not setting it as an env var, to see what happens then.

[–] [email protected] 1 points 2 weeks ago (9 children)

So I guess the question is why is curl failing from within the subshell?

[–] [email protected] 2 points 2 weeks ago (6 children)

I stumbled on a possible cause, but more background is necessary to explain.

The script actually creates an ssh tunnel (to the Traefik host) and then does the curl. So the code is like:

SSH_CMD="ssh -N -L ${LOCAL_PORT}:127.0.0.1:${REMOTE_PORT} ${REMOTE_USER}@${REMOTE_HOST}"
$SSH_CMD &
SSH_PID=$!
SSH_RESULT=$?

TEST=$(curl -o /dev/null -s -k -w "%{http_code}" -u "${USERNAME}:${PASSWORD}" "${URL}/dashboard/")
echo "${TEST}" #debug

What I learned is that when i run the script, the tunnel is successfully created but the curl fails; but then if I run the script again a second tunnel is created and the curl works fine.

[–] rwdf 1 points 2 weeks ago

Are you trying to reach a URL on the same host you're ssh-ing to? That would create some interesting effects.

Especially since it works the second time it could mean that the second time you're actually on the host and ssh-ing to the host itself and then curling localhost.

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