* bug#50423: ‘certbot-configuration-deploy-hook’ is stateful
@ 2021-09-06 7:53 Ludovic Courtès
0 siblings, 0 replies; only message in thread
From: Ludovic Courtès @ 2021-09-06 7:53 UTC (permalink / raw)
To: 50423
Hi,
I use certbot “deploy hooks” like this (excerpt from
‘hydra/bayfront.scm’ in guix/maintenance.git):
--8<---------------cut here---------------start------------->8---
(define %nginx-deploy-hook
;; Hook that restarts nginx when a new certificate is deployed.
(program-file "nginx-deploy-hook"
#~(let ((pid (call-with-input-file "/var/run/nginx/pid"
read)))
(kill pid SIGHUP))))
(define %certbot-configuration
(certbot-configuration
(webroot "/var/www")
(email "ludovic.courtes@inria.fr")
(certificates
(list (certificate-configuration
(domains '("bayfront.guix.gnu.org"
"logs.guix.gnu.org"
"bayfront.guix.info"
"hpc.guix.info"
"guix-hpc.bordeaux.inria.fr"
"coordinator.bayfront.guix.gnu.org"))
(deploy-hook %nginx-deploy-hook))))))
--8<---------------cut here---------------end--------------->8---
The problem is that cerbot records the deploy hook file name once for
all:
--8<---------------cut here---------------start------------->8---
ludo@bayfront ~$ sudo grep -r ryb6000fbb4lyb4ad294srkj4x8m821w /etc/letsencrypt/
Password:
/etc/letsencrypt/renewal/hpc.guix.info.conf:renew_hook = /gnu/store/ryb6000fbb4lyb4ad294srkj4x8m821w-nginx-deploy-hook
/etc/letsencrypt/renewal/guix-hpc.bordeaux.inria.fr.conf:renew_hook = /gnu/store/ryb6000fbb4lyb4ad294srkj4x8m821w-nginx-deploy-hook
--8<---------------cut here---------------end--------------->8---
After GC, the certbot config ends up pointing to a non-existing hook:
--8<---------------cut here---------------start------------->8---
ludo@bayfront ~$ sudo certbot renew
[...]
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Processing /etc/letsencrypt/renewal/hpc.guix.info.conf
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Renewing an existing certificate for hpc.guix.info
Hook 'deploy-hook' reported error code 127
Hook 'deploy-hook' ran with error output:
/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/sh: /gnu/store/ryb6000fbb4lyb4ad294srkj4x8m821w-nginx-deploy-hook: No such file or directory
--8<---------------cut here---------------end--------------->8---
Most likely, the only solution would be to populate a fixed directory
name, say /etc/nginx/hooks/deploy, such that certbot configuration
remains valid.
Thoughts?
Ludo’.
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