services: certbot: Add one-shot service to renew certificates.
* gnu/services/certbot.scm (certbot-renewal-one-shot): New procedure. (certbot-service-type)[extensions]: Add it to shepherd-root extension. (certbot-command): Make connection errors return a different exit code. (certbot-activation): Remove message with certificate renewal instructions. Change-Id: I614ac6214a753dba0396e2385a75926c8355caa1 Signed-off-by: Clément Lassieur <clement@lassieur.org>
This commit is contained in:
Carlo Zancanaro
Clément Lassieur
parent
d4a4b12f0a
commit
023c3e0ac4
|
|
@ -180,15 +180,45 @@ deploy."
|
|||
(program-file
|
||||
"certbot-command"
|
||||
#~(begin
|
||||
(use-modules (ice-9 match))
|
||||
(let ((code 0))
|
||||
(use-modules (ice-9 match)
|
||||
(ice-9 textual-ports))
|
||||
|
||||
(define (log format-string . args)
|
||||
(apply format #t format-string args)
|
||||
(force-output))
|
||||
|
||||
(define (file-contains? file string)
|
||||
(string-contains (call-with-input-file file
|
||||
get-string-all)
|
||||
string))
|
||||
|
||||
(define (connection-error?)
|
||||
;; Certbot errors are always exit code 1, so we need to look at
|
||||
;; the log file to see if there was a connection error.
|
||||
(file-contains? "/var/log/letsencrypt/letsencrypt.log"
|
||||
"Failed to establish a new connection"))
|
||||
|
||||
(let ((script-code 0))
|
||||
(for-each
|
||||
(match-lambda
|
||||
((name . command)
|
||||
(begin
|
||||
(format #t "Acquiring or renewing certificate: ~a~%" name)
|
||||
(set! code (or (apply system* command) code)))))
|
||||
'#$commands) code)))))))
|
||||
(log "Acquiring or renewing certificate: ~a~%" name)
|
||||
(cond
|
||||
((zero? (status:exit-val (apply system* command)))
|
||||
(log "Certificate successfully acquired: ~a~%" name))
|
||||
((connection-error?)
|
||||
;; If we have a connection error, then bail early with
|
||||
;; exit code 2. We don't expect this to resolve within the
|
||||
;; timespan of this script.
|
||||
(log "Connection error - bailing out~%")
|
||||
(exit 2))
|
||||
(else
|
||||
;; If we have any other type of error, then continue but
|
||||
;; exit with a failing status code in the end.
|
||||
(log "Error: ~a - continuing with other domains~%" name)
|
||||
(set! script-code 1)))))
|
||||
'#$commands)
|
||||
(exit script-code))))))))
|
||||
|
||||
(define (certbot-renewal-jobs config)
|
||||
(list
|
||||
|
|
@ -197,6 +227,40 @@ deploy."
|
|||
#~(job '(next-minute-from (next-hour '(0 12)) (list (random 60)))
|
||||
#$(certbot-command config))))
|
||||
|
||||
(define (certbot-renewal-one-shot config)
|
||||
(list
|
||||
;; Renew certificates when the system first starts. This is a one-shot
|
||||
;; service, because the mcron configuration will take care of running this
|
||||
;; periodically. This is most useful the very first time the system starts,
|
||||
;; to overwrite our self-signed certificates as soon as possible without
|
||||
;; user intervention.
|
||||
(shepherd-service
|
||||
(provision '(renew-certbot-certificates))
|
||||
(requirement '(nginx))
|
||||
(one-shot? #t)
|
||||
(start #~(lambda _
|
||||
;; This needs the network, but there's no reliable way to know
|
||||
;; if the network is up other than trying. If we fail due to a
|
||||
;; connection error we retry a number of times in the hope that
|
||||
;; the network comes up soon.
|
||||
(let loop ((attempt 0))
|
||||
(let ((code (status:exit-val
|
||||
(system* #$(certbot-command config)))))
|
||||
(cond
|
||||
((and (= code 2) ; Exit code 2 means connection error
|
||||
(< attempt 12)) ; Arbitrarily chosen max attempts
|
||||
(sleep 10) ; Arbitrarily chosen retry delay
|
||||
(loop (1+ attempt)))
|
||||
((zero? code)
|
||||
;; Success!
|
||||
#t)
|
||||
(else
|
||||
;; Failure.
|
||||
#f))))))
|
||||
(auto-start? #t)
|
||||
(documentation "Call certbot to renew certificates.")
|
||||
(actions (list (shepherd-configuration-action (certbot-command config)))))))
|
||||
|
||||
(define (generate-certificate-gexp certbot-cert-directory rsa-key-size)
|
||||
(match-lambda
|
||||
(($ <certificate-configuration> name (primary-domain other-domains ...)
|
||||
|
|
@ -240,9 +304,7 @@ deploy."
|
|||
|
||||
(define (certbot-activation config)
|
||||
(let* ((certbot-directory "/var/lib/certbot")
|
||||
(certbot-cert-directory "/etc/letsencrypt/live")
|
||||
(script (in-vicinity certbot-directory "renew-certificates"))
|
||||
(message (format #f (G_ "~a may need to be run~%") script)))
|
||||
(certbot-cert-directory "/etc/letsencrypt/live"))
|
||||
(match config
|
||||
(($ <certbot-configuration> package webroot certificates email
|
||||
server rsa-key-size default-location)
|
||||
|
|
@ -258,10 +320,7 @@ deploy."
|
|||
(map (generate-certificate-gexp certbot-cert-directory
|
||||
rsa-key-size)
|
||||
(filter certificate-configuration-start-self-signed?
|
||||
certificates)))
|
||||
|
||||
(copy-file #$(certbot-command config) #$script)
|
||||
(display #$message)))))))
|
||||
certificates)))))))))
|
||||
|
||||
(define certbot-nginx-server-configurations
|
||||
(match-lambda
|
||||
|
|
@ -294,7 +353,9 @@ deploy."
|
|||
(service-extension activation-service-type
|
||||
certbot-activation)
|
||||
(service-extension mcron-service-type
|
||||
certbot-renewal-jobs)))
|
||||
certbot-renewal-jobs)
|
||||
(service-extension shepherd-root-service-type
|
||||
certbot-renewal-one-shot)))
|
||||
(compose concatenate)
|
||||
(extend (lambda (config additional-certificates)
|
||||
(certbot-configuration
|
||||
|
|
|
|||
Loading…
Reference in New Issue