Update to 2022-09-06 18:00

roles/consul/defaults/main.yml

@@ -88,6 +88,12 @@ consul_base_conf:
     enabled: False
     # The default_policy is also used for intentions in the service mesh
     default_policy: deny
+    enable_token_persistence: True
+    # You can set tokens used by the agent
+    # tokens:
+    #   default: ab47bc38-d97f-19af-93a5-17b528d154c9
+    #   agent: 5459979a-3f23-8b1f-ff8a-2478856e9216
+    tokens: {}
 
   tls:
     # No TLS will be stup unless this is set to True
@@ -110,18 +116,21 @@ consul_extra_conf: {}
 consul_host_conf: {}
 consul_conf: "{{ consul_base_conf | combine(consul_extra_conf, recursive=True) | combine(consul_host_conf, recursive=True) }}"
 
-# To get certificates from vault
-consul_base_vault_tls:
-  enabled: False
-  # address: https://active.vault.service.consul:8200
-  # token: XXXXXX
+# TLS certs and token retrival from vault
+consul_base_vault_secrets:
+  # vault_address: https://active.vault.service.consul:8200
+  # vault_token: XXXXXX
   pki:
+    enabled: False
     path: /pki/consul
     role: consul-{{ consul_conf.server | ternary('server', 'client') }}
-    ttl: 24h
-consul_extra_vault_tls: {}
-consul_host_vault_tls: {}
-consul_vault_tls: "{{ consul_base_vault_tls | combine(consul_extra_vault_tls, recursive=True) | combine(consul_host_vault_tls, recursive=True) }}"
+  tokens:
+    enabled: False
+    path: /consul
+    role: consul-agent
+consul_extra_vault_secrets: {}
+consul_host_vault_secrets: {}
+consul_vault_secrets: "{{ consul_base_vault_secrets | combine(consul_extra_vault_secrets, recursive=True) | combine(consul_host_vault_secrets, recursive=True) }}"
 
 # For example
 # consul_extra_conf:

roles/consul/tasks/conf.yml

@@ -94,42 +94,40 @@
   loop: "{{ consul_backup_configs.stdout_lines }}"
   tags: consul
 
-- when: consul_vault_tls.enabled
-  block:
-
-    - name: Deploy consul-template config
-      template: src=consul-template.hcl.j2 dest={{ consul_root_dir }}/consul-template/consul-template.hcl
-      notify: restart consul-template-consul
-
-    - name: Deploy consul-template agent cert template
-      template: src=agent_cert.tpl.j2 dest={{ consul_root_dir }}/consul-template/{{ item.where }} owner=root group=root
-      loop:
-        - what: certificate
-          where: agent.crt.tpl
-        - what: private_key
-          where: agent.key.tpl
-        - what: issuing_ca
-          where: ca.crt.tpl
-      notify: restart consul-template-consul
-
-    - name: Check if certificate exists
-      stat: path={{ consul_conf.tls.defaults.cert_file }}
-      register: consul_tls_cert_file
-
+- name: Deploy consul-template config
+  template: src=consul-template.hcl.j2 dest={{ consul_root_dir }}/consul-template/consul-template.hcl mode=600 owner=root group=root
+  notify: restart consul-template-consul
+  when: consul_vault_secrets.pki.enabled or consul_vault_secrets.tokens.enabled
   tags: consul
 
-- when: consul_vault_tls.enabled and consul_conf.server
-  block:
+- name: Deploy consul-template agent cert template
+  template: src=agent_cert.tpl.j2 dest={{ consul_root_dir }}/consul-template/{{ item.where }} owner=root group=root
+  loop:
+    - what: certificate
+      where: agent.crt.tpl
+    - what: private_key
+      where: agent.key.tpl
+    - what: issuing_ca
+      where: ca.crt.tpl
+  notify: restart consul-template-consul
+  when: consul_vault_secrets.pki.enabled
+  tags: consul
 
-    - name: Deploy consul-template cli cert template
-      template: src=cli_cert.tpl.j2 dest={{ consul_root_dir }}/consul-template/{{ item.where }} owner=root group=root
-      loop:
-        - what: certificate
-          where: cli.crt.tpl
-        - what: private_key
-          where: cli.key.tpl
-      notify: restart consul-template-consul
+- name: Deploy consul-template cli cert template
+  template: src=cli_cert.tpl.j2 dest={{ consul_root_dir }}/consul-template/{{ item.where }} owner=root group=root
+  loop:
+    - what: certificate
+      where: cli.crt.tpl
+    - what: private_key
+      where: cli.key.tpl
+  notify: restart consul-template-consul
+  when: consul_vault_secrets.pki.enabled and consul_conf.server
+  tags: consul
 
+- name: Deploy the consul-template agent token template
+  template: src=agent.token.tpl.j2 dest={{ consul_root_dir }}/consul-template/agent.token.tpl owner=root group=root
+  notify: restart consul-template-consul
+  when: consul_vault_secrets.tokens.enabled
   tags: consul
 
 - name: Set ACL on the TLS dir

roles/consul/tasks/services.yml

@@ -6,6 +6,9 @@
   tags: consul
 
 - name: Handle consul-template-consul service
-  service: name=consul-template-consul state={{ consul_vault_tls.enabled | ternary('started', 'stopped') }} enabled={{ consul_vault_tls.enabled | ternary(True, False) }}
+  service:
+    name: consul-template-consul
+    state: "{{ (consul_vault_secrets.pki.enabled or consul_vault_secrets.tokens.enabled) | ternary('started', 'stopped') }}"
+    enabled: "{{ (consul_vault_secrets.pki.enabled or consul_vault_secrets.tokens.enabled) | ternary(True, False) }}"
   tags: consul
 

roles/consul/templates/agent.token.tpl.j2

@@ -0,0 +1,3 @@
+[[ with secret "{{ consul_vault_secrets.tokens.path }}/creds/{{ consul_vault_secrets.tokens.role }}" ]]
+[[ .Data.token ]]
+[[ end ]]

roles/consul/templates/agent_cert.tpl.j2

@@ -1,14 +1,14 @@
 {% if consul_conf.server %}
-[[ with secret "{{ consul_vault_tls.pki.path }}/issue/{{ consul_vault_tls.pki.role }}" "common_name=server-{{ ansible_fqdn | regex_replace('\\.', '-') }}.{{ consul_conf.datacenter | default('dc1') }}.{{ consul_conf.domain | default('consul') }}" "ttl={{ consul_vault_tls.pki.ttl }}" "alt_names=localhost,consul.service.{{ consul_conf.domain | default('consul') }},server.{{ consul_conf.datacenter | default('dc1') }}.{{ consul_conf.domain | default('consul') }}" ]]
+[[ with secret "{{ consul_vault_secrets.pki.path }}/issue/{{ consul_vault_secrets.pki.role }}" "common_name=server-{{ ansible_fqdn | regex_replace('\\.', '-') }}.{{ consul_conf.datacenter | default('dc1') }}.{{ consul_conf.domain | default('consul') }}" "alt_names=localhost,consul.service.{{ consul_conf.domain | default('consul') }},server.{{ consul_conf.datacenter | default('dc1') }}.{{ consul_conf.domain | default('consul') }}" ]]
 [[ .Data.{{ item.what }} ]]
 [[ end ]]
 {% if item.what == 'certificate' %}
-[[ with secret "{{ consul_vault_tls.pki.path }}/cert/ca" ]]
+[[ with secret "{{ consul_vault_secrets.pki.path }}/cert/ca" ]]
 [[ .Data.certificate ]]
 [[ end ]]
 {% endif %}
 {% else %}
-[[ with secret "{{ consul_vault_tls.pki.path }}/cert/ca" ]]
+[[ with secret "{{ consul_vault_secrets.pki.path }}/cert/ca" ]]
 [[ .Data.certificate ]]
 [[ end ]]
 {% endif %}

roles/consul/templates/cli_cert.tpl.j2

@@ -1,3 +1,3 @@
-[[ with secret "{{ consul_vault_tls.pki.path }}/issue/{{ consul_vault_tls.pki.role }}" "ttl={{ consul_vault_tls.pki.ttl }}" "common_name=cli-{{ ansible_fqdn | regex_replace('\\.', '-') }}.{{ consul_conf.datacenter | default('dc1') }}.{{ consul_conf.domain | default('consul') }}" ]]
+[[ with secret "{{ consul_vault_secrets.pki.path }}/issue/{{ consul_vault_secrets.pki.role }}" "common_name=cli-{{ ansible_fqdn | regex_replace('\\.', '-') }}.{{ consul_conf.datacenter | default('dc1') }}.{{ consul_conf.domain | default('consul') }}" ]]
 [[ .Data.{{ item.what }} ]]
 [[ end ]]

roles/consul/templates/consul-template-consul.service.j2

@@ -8,6 +8,7 @@ ConditionFileNotEmpty={{ consul_root_dir }}/consul-template/consul-template.hcl
 [Service]
 Type=simple
 ExecStart=/usr/local/bin/consul-template -config={{ consul_root_dir }}/consul-template/consul-template.hcl
+SuccessExitStatus=12
 ExecReload=/bin/kill --signal HUP $MAINPID
 KillSignal=SIGINT
 Restart=on-failure

roles/consul/templates/consul-template.hcl.j2

@@ -1,6 +1,6 @@
 vault {
-  address      = "{{ consul_vault_tls.address }}"
-  token        = "{{ consul_vault_tls.token }}"
+  address      = "{{ consul_vault_secrets.vault_address }}"
+  token        = "{{ consul_vault_secrets.vault_token }}"
   unwrap_token = false
 }
 
@@ -11,10 +11,11 @@ template {
   destination     = "{{ consul_conf.tls.defaults.ca_file }}"
   perms           = 0644
   exec {
-    command = "systemctl reload consul"
+    command = "sh -c 'systemctl reload consul || true'"
   }
 }
 
+{% if consul_vault_secrets.pki.enabled %}
 {% if consul_conf.server %}
 template {
   source          = "{{ consul_root_dir }}/consul-template/agent.crt.tpl"
@@ -23,7 +24,7 @@ template {
   destination     = "{{ consul_conf.tls.defaults.cert_file }}"
   perms           = 0644
   exec {
-    command = "systemctl reload consul"
+    command = "sh -c 'systemctl reload consul || true'"
   }
 }
 
@@ -34,7 +35,7 @@ template {
   destination     = "{{ consul_conf.tls.defaults.key_file }}"
   perms           = 0640
   exec {
-    command = ["sh", "-c", "chgrp {{ consul_user }} {{ consul_conf.tls.defaults.key_file }} && systemctl reload consul"]
+    command = "sh -c 'chgrp {{ consul_user }} {{ consul_conf.tls.defaults.key_file }} && systemctl reload consul || true'"
   }
 }
 
@@ -53,3 +54,17 @@ template {
   perms           = 0640
 }
 {% endif %}
+{% endif %}
+
+{% if consul_vault_secrets.tokens.enabled %}
+template {
+  source          = "{{ consul_root_dir }}/consul-template/agent.token.tpl"
+  left_delimiter  = "[["
+  right_delimiter = "]]"
+  destination     = "{{ consul_root_dir }}/tmp/agent.token"
+  perms           = 0600
+  exec {
+    command = "sh -c 'consul acl set-agent-token default $(grep -P \'^[^\s]\' {{ consul_root_dir }}/tmp/agent.token)'"
+  }
+}
+{% endif %}

roles/consul/templates/consul.hcl.j2

@@ -73,8 +73,19 @@ connect {
 {% endif %}
 
 acl {
-  enabled = {{ consul_conf.acl.enabled | ternary('true', 'false') }}
+{% for key in ['enabled', 'enable_token_persistence'] %}
+{% if consul_conf.acl[key] is defined %}
+  {{ key }} = {{ consul_conf.acl[key] | ternary('true', 'false') }}
+{% endif %}
+{% endfor %}
   default_policy = "{{ consul_conf.acl.default_policy }}"
+  tokens {
+{% for key in ['initial_management', 'default', 'agent', 'agent_recovery', 'replication'] %}
+{% if consul_conf.acl.tokens[key] is defined %}
+    {{ key }} = "{{ consul_conf.acl.tokens[key] }}"
+{% endif %}
+{% endfor %}
+  }
 }
 
 {% if consul_conf.tls.enabled %}
@@ -108,5 +119,4 @@ auto_encrypt {
   tls = true
 }
 {% endif %}
-
 {% endif %}

roles/consul/templates/profile.sh.j2

@@ -2,7 +2,7 @@
 export CONSUL_HTTP_ADDR=https://localhost:{{ consul_services.https.port }}
 export CONSUL_HTTP_SSL=true
 export CONSUL_CACERT={{ consul_conf.tls.defaults.ca_file }}
-{% if consul_vault_tls.enabled %}
+{% if consul_vault_secrets.pki.enabled %}
 export CONSUL_CLIENT_CERT={{ consul_root_dir }}/tls/cli.crt
 export CONSUL_CLIENT_KEY={{ consul_root_dir }}/tls/cli.key
 export CONSUL_TLS_SERVER_NAME=server.{{ consul_conf.datacenter | default('dc1') }}.{{ consul_conf.domain | default('consul') }}