299a8c4c7c
This makes all containers (except mautrix-telegram and mautrix-whatsapp), start as a non-root user. We do this, because we don't trust some of the images. In any case, we'd rather not trust ALL images and avoid giving `root` access at all. We can't be sure they would drop privileges or what they might do before they do it. Because Postfix doesn't support running as non-root, it had to be replaced by an Exim mail server. The matrix-nginx-proxy nginx container image is patched up (by replacing its main configuration) so that it can work as non-root. It seems like there's no other good image that we can use and that is up-to-date (https://hub.docker.com/r/nginxinc/nginx-unprivileged is outdated). Likewise for riot-web (https://hub.docker.com/r/bubuntux/riot-web/), we patch it up ourselves when starting (replacing the main nginx configuration). Ideally, it would be fixed upstream so we can simplify.
77 lines
3 KiB
YAML
77 lines
3 KiB
YAML
- debug:
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msg: "Dealing with SSL certificate retrieval for domain: {{ domain_name }}"
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- set_fact:
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domain_name_certificate_path: "{{ matrix_ssl_config_dir_path }}/live/{{ domain_name }}/cert.pem"
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- name: Check if a certificate for the domain already exists
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stat:
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path: "{{ domain_name_certificate_path }}"
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register: domain_name_certificate_path_stat
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- set_fact:
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domain_name_needs_cert: "{{ not domain_name_certificate_path_stat.stat.exists }}"
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# This will fail if there is something running on port 80 (like matrix-nginx-proxy).
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# We suppress the error, as we'll try another method below.
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- name: Attempt initial SSL certificate retrieval with standalone authenticator (directly)
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shell: >-
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/usr/bin/docker run
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--rm
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--name=matrix-certbot
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--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
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-p 80:8080
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-v {{ matrix_ssl_config_dir_path }}:/etc/letsencrypt
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-v {{ matrix_ssl_log_dir_path }}:/var/log/letsencrypt
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{{ matrix_ssl_lets_encrypt_certbot_docker_image }}
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certonly
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--non-interactive
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--work-dir=/tmp
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--http-01-port 8080
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{% if matrix_ssl_lets_encrypt_staging %}--staging{% endif %}
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--standalone
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--preferred-challenges http
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--agree-tos
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--email={{ matrix_ssl_lets_encrypt_support_email }}
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-d {{ domain_name }}
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when: "domain_name_needs_cert"
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register: result_certbot_direct
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ignore_errors: true
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# If matrix-nginx-proxy is configured from a previous run of this playbook,
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# and it's running now, it may be able to proxy requests to `matrix_ssl_lets_encrypt_certbot_standalone_http_port`.
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- name: Attempt initial SSL certificate retrieval with standalone authenticator (via proxy)
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shell: >-
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/usr/bin/docker run
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--rm
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--name=matrix-certbot
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--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
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-p 127.0.0.1:{{ matrix_ssl_lets_encrypt_certbot_standalone_http_port }}:8080
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--network={{ matrix_docker_network }}
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-v {{ matrix_ssl_config_dir_path }}:/etc/letsencrypt
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-v {{ matrix_ssl_log_dir_path }}:/var/log/letsencrypt
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{{ matrix_ssl_lets_encrypt_certbot_docker_image }}
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certonly
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--non-interactive
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--work-dir=/tmp
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--http-01-port 8080
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{% if matrix_ssl_lets_encrypt_staging %}--staging{% endif %}
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--standalone
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--preferred-challenges http
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--agree-tos
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--email={{ matrix_ssl_lets_encrypt_support_email }}
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-d {{ domain_name }}
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when: "domain_name_needs_cert and result_certbot_direct.failed"
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register: result_certbot_proxy
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ignore_errors: true
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- name: Fail if all SSL certificate retrieval attempts failed
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fail:
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msg: |
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Failed to obtain a certificate directly (by listening on port 80)
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and also failed to obtain by relying on the server at port 80 to proxy the request.
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See above for details.
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You may wish to set up proxying of /.well-known/acme-challenge to {{ matrix_ssl_lets_encrypt_certbot_standalone_http_port }} or,
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more easily, stop the server on port 80 while this playbook runs.
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when: "domain_name_needs_cert and result_certbot_direct.failed and result_certbot_proxy.failed"
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