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matrix-docker-ansible-deploy/roles/matrix-server/templates/cron.d/matrix-ssl-certificate-renewal.j2

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MAILTO="{{ matrix_ssl_support_email }}"
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# The goal of this cronjob is to ask acmetool to check
# the current SSL certificates and to see if some need renewal.
# If so, it would attempt to renew.
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#
# Various services depend on these certificates and would need to be restarted.
# This is not our concern here. We simply make sure the certificates are up to date.
# Restarting of services happens on its own different schedule (other cronjobs).
#
#
# How renewal works?
#
# acmetool will fail to bind to port :80 (because matrix-nginx-proxy or some other server is running there),
# and will fall back to its "webroot" validation method.
#
# Thus, it would put validation files in `/var/run/acme/acme-challenge`.
# These files can be retrieved via any vhost on port 80 of matrix-nginx-proxy,
# because it aliases `/.well-known/acme-challenge` to that same directory.
#
# When a custom proxy server (not matrix-nginx-proxy provided by this playbook),
# you'd need to make sure you alias these files correctly or SSL renewal would not work.
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{{ matrix_ssl_renew_cron_time_definition }} root /usr/bin/docker run --rm --net=host -v {{ matrix_ssl_certs_path }}:/certs -v {{ matrix_ssl_certs_path }}/run:/var/run/acme -e ACME_EMAIL={{ matrix_ssl_support_email }} willwill/acme-docker acmetool --batch reconcile # --xlog.severity=debug