Browse Source

Merge "letsencrypt support"

changes/53/651053/1
Zuul 1 month ago
parent
commit
f139a81994

+ 30
- 0
.zuul.yaml View File

@@ -439,6 +439,34 @@
439 439
       - playbooks/group_vars/eavesdrop.yaml
440 440
       - testinfra/test_eavesdrop.py
441 441
 
442
+
443
+- job:
444
+    name: system-config-run-letsencrypt
445
+    parent: system-config-run
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+    description: |
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+      Run the playbook for letsencrypt key acquisition
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+    nodeset:
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+      nodes:
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+        - name: bridge.openstack.org
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+          label: ubuntu-bionic
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+        - name: adns-letsencrypt.opendev.org
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+          label: ubuntu-bionic
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+        - name: letsencrypt01.opendev.org
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+          label: ubuntu-bionic
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+        - name: letsencrypt02.opendev.org
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+          label: ubuntu-bionic
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+    host-vars:
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+      letsencrypt01.opendev.org:
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+        host_copy_output:
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+          '/var/log/acme.sh': logs
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+      letsencrypt02.opendev.org:
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+        host_copy_output:
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+          '/var/log/acme.sh': logs
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+    files:
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+      - .zuul.yaml
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+      - playbooks/group_vars/letsencrypt.yaml
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+      - playbooks/roles/letsencrypt.*
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+
442 470
 - job:
443 471
     name: system-config-run-nodepool
444 472
     parent: system-config-run
@@ -647,6 +675,7 @@
647 675
               - name: system-config-build-image-gitea
648 676
                 soft: true
649 677
         - system-config-run-zuul-preview
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+        - system-config-run-letsencrypt
650 679
         - system-config-build-image-jinja-init
651 680
         - system-config-build-image-gitea-init
652 681
         - system-config-build-image-gitea
@@ -673,6 +702,7 @@
673 702
               - name: system-config-upload-image-gitea
674 703
                 soft: true
675 704
         - system-config-run-zuul-preview
705
+        - system-config-run-letsencrypt
676 706
         - system-config-upload-image-jinja-init
677 707
         - system-config-upload-image-gitea-init
678 708
         - system-config-upload-image-gitea

+ 2
- 0
inventory/groups.yaml View File

@@ -72,6 +72,8 @@ groups:
72 72
     - kdc[0-9]*.open*.org
73 73
   kubernetes:
74 74
     - opendev-k8s*.opendev.org
75
+#  letsencrypt:
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+#    - TBD
75 77
   logstash:
76 78
     - logstash[0-9]*.open*.org
77 79
   logstash-worker:

+ 17
- 0
playbooks/base.yaml View File

@@ -91,3 +91,20 @@
91 91
   roles:
92 92
     - install-docker
93 93
     - zuul-preview
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+
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+# This next section needs to happen in order.  letsencrypt hosts
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+# export their TXT authentication records which is installed onto
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+# adns1, and then the hosts verify to issue/renew keys
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+- hosts: "letsencrypt:!disabled"
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+  name: "Base: deploy and renew certificates"
100
+  roles:
101
+    - letsencrypt-acme-sh-install
102
+    - letsencrypt-request-certs
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+- hosts: "adns:!disabled"
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+  name: "Install txt records"
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+  roles:
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+    - letsencrypt-install-txt-record
107
+- hosts: "letsencrypt:!disabled"
108
+  name: "Create certs"
109
+  roles:
110
+    - letsencrypt-create-certs

+ 9
- 0
playbooks/roles/letsencrypt-acme-sh-install/README.rst View File

@@ -0,0 +1,9 @@
1
+Install acme.sh client
2
+
3
+This makes the `acme.sh <https://github.com/Neilpang/acme.sh>`__
4
+client available on the host.
5
+
6
+Additionally a ``driver.sh`` script is installed to run the
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+authentication procedure and parse output.
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+
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+**Role Variables**

+ 76
- 0
playbooks/roles/letsencrypt-acme-sh-install/files/driver.sh View File

@@ -0,0 +1,76 @@
1
+#!/bin/bash
2
+
3
+ACME_SH=${ACME_SH:-/opt/acme.sh/acme.sh}
4
+CERT_HOME=${CERT_HOME:-/etc/letsencrypt-certs}
5
+CHALLENGE_ALIAS_DOMAIN=${CHALLENGE_ALIAS_DOMAIN:-acme.opendev.org.}
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+# Set to !0 to use letsencrypt staging rather than production requests
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+LETSENCRYPT_STAGING=${LETSENCRYPT_STAGING:-0}
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+LOG_FILE=${LOG_FILE:-/var/log/acme.sh/acme.sh.log}
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+
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+STAGING=""
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+if [[ ${LETSENCRYPT_STAGING} != 0 ]]; then
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+    STAGING="--staging"
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+fi
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+
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+echo -e  "\n--- start --- ${1} --- $(date -u '+%Y-%m-%dT%k:%M:%S%z') ---" >> ${LOG_FILE}
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+
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+if [[ ${1} == "issue" ]]; then
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+    # Take output like:
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+    #  [Thu Feb 14 13:44:37 AEDT 2019] Domain: '_acme-challenge.test.opendev.org'
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+    #  [Thu Feb 14 13:44:37 AEDT 2019] TXT value: 'QjkChGcuqD7rl0jN8FNWkWNAISX1Zry_vE-9RxWF2pE'
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+    #
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+    # and turn it into:
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+    #
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+    # _acme-challenge.test.opendev.org:QjkChGcuqD7rl0jN8FNWkWNAISX1Zry_vE-9RxWF2pE
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+    #
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+    # Ansible then parses this back to a dict.
27
+    shift;
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+    for arg in "$@"; do
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+        $ACME_SH ${STAGING} \
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+            --cert-home ${CERT_HOME} \
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+            --no-color \
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+            --yes-I-know-dns-manual-mode-enough-go-ahead-please \
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+            --issue \
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+            --dns \
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+            --challenge-alias ${CHALLENGE_ALIAS_DOMAIN} \
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+            $arg 2>&1 | tee -a ${LOG_FILE} | \
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+                egrep 'Domain:|TXT value:' | cut -d"'" -f2 | paste -d':' - -
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+                # shell magic ^ is
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+                #  - extract everything between ' '
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+                #  - stick every two lines together, separated by a :
41
+    done
42
+elif [[ ${1} == "renew" ]]; then
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+    shift;
44
+    for arg in "$@"; do
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+        $ACME_SH ${STAGING} \
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+            --cert-home ${CERT_HOME} \
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+            --no-color \
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+            --yes-I-know-dns-manual-mode-enough-go-ahead-please \
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+            --renew \
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+            $arg 2>&1 | tee -a ${LOG_FILE}
51
+    done
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+elif [[ ${1} == "selfsign" ]]; then
53
+    # For testing, simulate the key generation
54
+    shift;
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+    for arg in "$@"; do
56
+        # TODO(ianw): Set SAN names from the other "-d" arguments?;
57
+        # it's a pita to parse.
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+        {
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+            read -r -a domain_array <<< "$arg"
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+            domain=${domain_array[1]}
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+            mkdir -p ${CERT_HOME}/${domain}
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+            cd ${CERT_HOME}/${domain}
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+            echo "Creating certs in ${CERT_HOME}/${domain}"
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+            openssl genrsa -out ${domain}.key 2048
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+            openssl rsa -in ${domain}.key -out ${domain}.key
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+            openssl req -sha256 -new -key ${domain}.key -out ${domain}.csr -subj '/CN=localhost'
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+            openssl x509 -req -sha256 -days 365 -in ${domain}.csr -signkey ${domain}.key -out ${domain}.cer
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+            cp ${domain}.cer fullchain.cer
69
+        } | tee -a ${LOG_FILE}
70
+    done
71
+else
72
+    echo "Unknown driver arg: $1"
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+    exit 1
74
+fi
75
+
76
+echo "--- end   --- $(date -u '+%Y-%m-%dT%k:%M:%S%z') ---" >> ${LOG_FILE}

+ 23
- 0
playbooks/roles/letsencrypt-acme-sh-install/tasks/main.yaml View File

@@ -0,0 +1,23 @@
1
+- name: Install acme.sh client
2
+  git:
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+    repo: https://github.com/Neilpang/acme.sh
4
+    dest: /opt/acme.sh
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+    version: dev
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+
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+- name: Install driver script
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+  copy:
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+    src: driver.sh
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+    dest: /opt/acme.sh/driver.sh
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+    mode: 0755
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+
13
+- name: Setup log directory
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+  file:
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+    path: /var/log/acme.sh
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+    state: directory
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+    mode: 0755
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+
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+- name: Setup log rotation
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+  include_role:
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+    name: logrotate
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+  vars:
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+    logrotate_file_name: /var/log/acme.sh/acme.sh.log

+ 19
- 0
playbooks/roles/letsencrypt-create-certs/README.rst View File

@@ -0,0 +1,19 @@
1
+Generate letsencrypt certificates
2
+
3
+This must run after the ``letsencrypt-install-acme-sh``,
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+``letsencrypt-request-certs`` and ``letsencrypt-install-txt-records``
5
+roles.  It will run the ``acme.sh`` process to create the certificates
6
+on the host.
7
+
8
+**Role Variables**
9
+
10
+.. zuul:rolevar:: letsencrypt_test_only
11
+
12
+   If set to True, will locally generate self-signed certificates in
13
+   the same locations the real script would, instead of contacting
14
+   letsencrypt.  This is set during gate testing as the
15
+   authentication tokens are not available.
16
+
17
+.. zuul:rolevar:: letsencrypt_certs
18
+
19
+   The same variable as described in ``letsencrypt-request-certs``.

+ 1
- 0
playbooks/roles/letsencrypt-create-certs/defaults/main.yaml View File

@@ -0,0 +1 @@
1
+letsencrypt_test_only: False

+ 16
- 0
playbooks/roles/letsencrypt-create-certs/tasks/acme.yaml View File

@@ -0,0 +1,16 @@
1
+- name: 'Build arguments for letsencrypt acme.sh driver for: {{ item.key }}'
2
+  set_fact:
3
+    acme_args: '"{% for domain in item.value %}-d {{ domain }} {% endfor %}"'
4
+
5
+- name: 'Run acme.sh driver for {{ item.key }} certificate issue'
6
+  shell:
7
+    cmd: |
8
+      /opt/acme.sh/driver.sh {{ 'selfsign' if letsencrypt_test_only else 'renew' }}  {{ acme_args }}
9
+  args:
10
+    chdir: /opt/acme.sh/
11
+  register: acme_output
12
+
13
+- debug:
14
+    var: acme_output.stdout_lines
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+
16
+# Keys generated!

+ 13
- 0
playbooks/roles/letsencrypt-create-certs/tasks/main.yaml View File

@@ -0,0 +1,13 @@
1
+# NOTE(ianw): this var set for the host by the
2
+# letsencrypt-request-certs role; running this when empty would be a
3
+# no-op but we might as well skip it if we know this host hasn't
4
+# requested anything to actually create/renew.
5
+- name: Check for prerun state
6
+  fail:
7
+    msg: "acme_txt_required is not defined; was letsencrypt-request-certs run?"
8
+  when: acme_txt_required is not defined
9
+
10
+- name: Include ACME renewal
11
+  include_tasks: acme.yaml
12
+  loop: "{{ query('dict', letsencrypt_certs) }}"
13
+  when: acme_txt_required | length > 0

+ 19
- 0
playbooks/roles/letsencrypt-install-txt-record/README.rst View File

@@ -0,0 +1,19 @@
1
+Install authentication records for letsencrypt
2
+
3
+Install TXT records to the ``acme.opendev.org`` domain.  This role
4
+runs only the adns server, and assumes ownership of the
5
+``/var/lib/bind/zones/acme.opendev.org/zone.db`` file.  After
6
+installation the nameserver is refreshed.
7
+
8
+After this, ``letsencrypt-create-certs`` can run on each host to
9
+provision the certificates.
10
+
11
+**Role Variables**
12
+
13
+.. zuul:rolevar:: acme_txt_required
14
+
15
+   A global dictionary of TXT records to be installed.  This is
16
+   generated in a prior step on each host by the
17
+   ``letsencrypt-request-certs`` role.
18
+
19
+

+ 35
- 0
playbooks/roles/letsencrypt-install-txt-record/tasks/main.yaml View File

@@ -0,0 +1,35 @@
1
+- name: Make key list
2
+  set_fact:
3
+    acme_txt_keys: []
4
+
5
+- name: Build key list
6
+  set_fact:
7
+    acme_txt_keys: '{{ acme_txt_keys }} + {{ hostvars[item]["acme_txt_required"] }}'
8
+  with_inventory_hostnames: letsencrypt
9
+
10
+- name: Final list
11
+  debug:
12
+    var: acme_txt_keys
13
+
14
+# NOTE(ianw): Most of the time, we won't have anything to actually do
15
+# as we don't have new keys or renewals due.
16
+- name: Deploy TXT records
17
+  block:
18
+    - name: Deploy new zone.db
19
+      template:
20
+        src: zone.db.j2
21
+        dest: /var/lib/bind/zones/acme.opendev.org/zone.db
22
+
23
+    - name: debug new file
24
+      slurp:
25
+        src: '/var/lib/bind/zones/acme.opendev.org/zone.db'
26
+      register: bind_zone_result
27
+    - debug:
28
+        msg: "{{ bind_zone_result['content'] | b64decode }}"
29
+
30
+    - name: Ensure domain is valid
31
+      shell: named-checkzone acme.opendev.org /var/lib/bind/zones/acme.opendev.org/zone.db
32
+
33
+    - name: Reload domain
34
+      shell: rndc reload acme.opendev.org
35
+  when: acme_txt_keys | length > 0

+ 17
- 0
playbooks/roles/letsencrypt-install-txt-record/templates/zone.db.j2 View File

@@ -0,0 +1,17 @@
1
+; -*- mode: zone -*-
2
+$ORIGIN acme.opendev.org.
3
+$TTL 1m
4
+@               IN      SOA     adns1.opendev.org. hostmaster.opendev.org. (
5
+                        {{ ansible_date_time.epoch }}  ; serial number unixtime
6
+                        1h          ; refresh (secondary checks for updates)
7
+                        10m         ; retry   (secondary retries failed axfr)
8
+                        10d         ; expire  (secondary ends serving old data)
9
+                        5m  )       ; min ttl (cache time for failed lookups)
10
+@               IN      NS      ns1.opendev.org.
11
+@               IN      NS      ns2.opendev.org.
12
+
13
+; NOTE: DO NOT HAND EDIT.  THESE KEYS ARE MANAGED BY ANSIBLE
14
+
15
+{% for key in acme_txt_keys %}
16
+@	IN	TXT	"{{key[1]}}"
17
+{% endfor %}

+ 53
- 0
playbooks/roles/letsencrypt-request-certs/README.rst View File

@@ -0,0 +1,53 @@
1
+Request certificates from letsencrypt
2
+
3
+The role requests certificates (or renews expiring certificates, which
4
+is fundamentally the same thing) from letsencrypt for a host.  This
5
+requires the ``acme.sh`` tool and driver which should have been
6
+installed by the ``letsencrypt-acme-sh-install`` role.
7
+
8
+This role does not create the certificates.  It will request the
9
+certificates from letsencrypt and populate the authentication data
10
+into the ``acme_txt_required`` variable.  These values need to be
11
+installed and activated on the DNS server by the
12
+``letsencrypt-install-txt-record`` role; the
13
+``letsencrypt-create-certs`` will then finish the certificate
14
+provision process.
15
+
16
+**Role Variables**
17
+
18
+.. zuul:rolevar:: letsencrypt_test_only
19
+
20
+   Uses staging, rather than prodcution requests to letsencrypt
21
+
22
+.. zuul:rolevar:: letsencrypt_certs
23
+
24
+   A host wanting a certificate should define a dictionary variable
25
+   ``letsencyrpt_certs``.  Each key in this dictionary is a separate
26
+   certificate to create (i.e. a host can create multiple separate
27
+   certificates).  Each key should have a list of hostnames valid for
28
+   that certificate.  The certificate will be named for the *first*
29
+   entry.
30
+
31
+   For example:
32
+
33
+   .. code-block:: yaml
34
+
35
+     letsencrypt_certs:
36
+       main:
37
+         - hostname01.opendev.org
38
+         - hostname.opendev.org
39
+       secondary:
40
+         - foo.opendev.org
41
+
42
+   will ultimately result in two certificates being provisioned on the
43
+   host in ``/etc/letsencrypt-certs/hostname01.opendev.org`` and
44
+   ``/etc/letsencrypt-certs/foo.opendev.org``.
45
+
46
+   Note that each entry will require a ``CNAME`` pointing the ACME
47
+   challenge domain to the TXT record that will be created in the
48
+   signing domain.  For example above, the following records would need
49
+   to be pre-created::
50
+
51
+     _acme-challenge.hostname01.opendev.org.  IN   CNAME  acme.opendev.org.
52
+     _acme-challenge.hostname.opendev.org.    IN   CNAME  acme.opendev.org.
53
+     _acme-challenge.foo.opendev.org.         IN   CNAME  acme.opendev.org.

+ 1
- 0
playbooks/roles/letsencrypt-request-certs/defaults/main.yaml View File

@@ -0,0 +1 @@
1
+letsencrypt_test_only: False

+ 29
- 0
playbooks/roles/letsencrypt-request-certs/tasks/acme.yaml View File

@@ -0,0 +1,29 @@
1
+- name: 'Build arguments for letsencrypt acme.sh driver for: {{ cert.key }}'
2
+  set_fact:
3
+    # NOTE(ianw): note the domains are passed in one string (between
4
+    # ") as it makes argument parsing a little easier in the driver.sh
5
+    acme_args: '"{% for domain in cert.value %}-d {{ domain }} {% endfor %}"'
6
+
7
+- name: Run acme.sh driver for certificate issue
8
+  shell:
9
+    cmd: |
10
+      /opt/acme.sh/driver.sh issue {{ acme_args }}
11
+  args:
12
+    chdir: /opt/acme.sh/
13
+  environment:
14
+    LETSENCRYPT_STAGING: '{{ "1" if letsencrypt_test_only else "0" }}'
15
+  register: acme_output
16
+
17
+- debug:
18
+    var: acme_output.stdout_lines
19
+
20
+# NOTE(ianw): The output is domain:key which we split into a tuple
21
+# here.  We don't make use of the domain part ATM; our default CNAME
22
+# setup points "_acme-challenge.host.acme.opendev.org" to just
23
+# "acme.opendev.org" so we put all the keys into "top-level" TXT
24
+# records directly at acme.opendev.org.  letsencyrpt doesn't care; it
25
+# just follows the CNAME and enumerates all the TXT records in
26
+# acme.opendev.org looking for one that matches.
27
+- set_fact:
28
+    acme_txt_required: '{{ acme_txt_required + [(item.split(":")[0], item.split(":")[1])] }}'
29
+  loop: '{{ acme_output.stdout_lines }}'

+ 25
- 0
playbooks/roles/letsencrypt-request-certs/tasks/main.yaml View File

@@ -0,0 +1,25 @@
1
+- set_fact:
2
+    acme_txt_required: []
3
+
4
+- name: Show cert list
5
+  debug:
6
+    var: letsencrypt_certs
7
+
8
+# Handle multiple certs for a single host; like
9
+#
10
+# letsencrypt_certs:
11
+#    main:
12
+#      hostname.opendev.org
13
+#    secondary:
14
+#      foo.opendev.org
15
+#      baz.opendev.org
16
+#
17
+# All required TXT keys are put into acme_txt_required
18
+
19
+- include_tasks: acme.yaml
20
+  loop: "{{ query('dict', letsencrypt_certs) }}"
21
+  loop_control:
22
+    loop_var: cert
23
+
24
+- debug:
25
+    var: acme_txt_required

+ 3
- 0
playbooks/zuul/run-base.yaml View File

@@ -65,7 +65,10 @@
65 65
         - group_vars/registry.yaml
66 66
         - group_vars/gitea.yaml
67 67
         - group_vars/gitea-lb.yaml
68
+        - group_vars/letsencrypt.yaml
68 69
         - host_vars/bridge.openstack.org.yaml
70
+        - host_vars/letsencrypt01.opendev.org.yaml
71
+        - host_vars/letsencrypt02.opendev.org.yaml
69 72
     - name: Display group membership
70 73
       command: ansible localhost -m debug -a 'var=groups'
71 74
     - name: Run base.yaml

+ 4
- 0
playbooks/zuul/templates/gate-groups.yaml.j2 View File

@@ -10,3 +10,7 @@ groups:
10 10
 
11 11
   docker:
12 12
     - bionic-docker
13
+
14
+  letsencrypt:
15
+    - letsencrypt01.opendev.org
16
+    - letsencrypt02.opendev.org

+ 4
- 0
playbooks/zuul/templates/group_vars/letsencrypt.yaml.j2 View File

@@ -0,0 +1,4 @@
1
+# We don't want CI tests trying to really authenticate against
2
+# letsencrypt; apart from just being unfriendly it might cause quota
3
+# issues.
4
+letsencrypt_test_only: True

+ 7
- 0
playbooks/zuul/templates/host_vars/letsencrypt01.opendev.org.yaml.j2 View File

@@ -0,0 +1,7 @@
1
+letsencrypt_certs:
2
+  main:
3
+    - letsencrypt01.opendev.org
4
+    - letsencrypt.opendev.org
5
+    - alias.opendev.org
6
+  secondary:
7
+    - someotherservice.opendev.org

+ 4
- 0
playbooks/zuul/templates/host_vars/letsencrypt02.opendev.org.yaml.j2 View File

@@ -0,0 +1,4 @@
1
+letsencrypt_certs:
2
+  main:
3
+    - letsencrypt02.opendev.org
4
+    - letsencrypt.opendev.org

+ 60
- 0
testinfra/test_letsencrypt.py View File

@@ -0,0 +1,60 @@
1
+# Copyright 2019 Red Hat, Inc.
2
+#
3
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
4
+# not use this file except in compliance with the License. You may obtain
5
+# a copy of the License at
6
+#
7
+#      http://www.apache.org/licenses/LICENSE-2.0
8
+#
9
+# Unless required by applicable law or agreed to in writing, software
10
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12
+# License for the specific language governing permissions and limitations
13
+# under the License.
14
+
15
+import pytest
16
+
17
+testinfra_hosts = ['adns-letsencrypt.opendev.org',
18
+                   'letsencrypt01.opendev.org',
19
+                   'letsencrypt02.opendev.org']
20
+
21
+
22
+def test_acme_zone(host):
23
+    if host.backend.get_hostname() != 'adns-letsencrypt.opendev.org':
24
+        pytest.skip()
25
+    acme_opendev_zone = host.file('/var/lib/bind/zones/acme.opendev.org/zone.db')
26
+    assert acme_opendev_zone.exists
27
+
28
+    # On our test nodes, unbound is listening on 127.0.0.1:53; this
29
+    # ensures the query hits bind
30
+    query_addr = host.ansible("setup")["ansible_facts"]["ansible_default_ipv4"]["address"]
31
+    cmd = host.run("dig -t txt acme.opendev.org @" + query_addr)
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+    count = 0
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+    for line in cmd.stdout.split('\n'):
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+        if line.startswith('acme.opendev.org.	60	IN	TXT'):
35
+            count = count + 1
36
+    if count != 6:
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+        # NOTE(ianw): I'm sure there's more pytest-y ways to save this
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+        # for debugging ...
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+        print(cmd.stdout)
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+    assert count == 6, "Did not see required number of TXT records!"
41
+
42
+def test_certs_created(host):
43
+    if host.backend.get_hostname() == 'letsencrypt01.opendev.org':
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+        domain_one = host.file(
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+            '/etc/letsencrypt-certs/'
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+            'letsencrypt01.opendev.org/letsencrypt01.opendev.org.key')
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+        assert domain_one.exists
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+        domain_two = host.file(
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+            '/etc/letsencrypt-certs/'
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+            'someotherservice.opendev.org/someotherservice.opendev.org.key')
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+        assert domain_two.exists
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+
53
+    elif host.backend.get_hostname() == 'letsencrypt02.opendev.org':
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+        domain_one = host.file(
55
+            '/etc/letsencrypt-certs/'
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+            'letsencrypt02.opendev.org/letsencrypt02.opendev.org.key')
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+        assert domain_one.exists
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+
59
+    else:
60
+        pytest.skip()

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