switch memcached from tcp to unix domain socket

awx/settings/defaults.py

@@ -405,17 +405,6 @@ AWX_ISOLATED_PERIODIC_CHECK = 600
 # Verbosity level for isolated node management tasks
 AWX_ISOLATED_VERBOSITY = 0
 
-# Memcached django cache configuration
-# CACHES = {
-#     'default': {
-#         'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
-#         'LOCATION': '127.0.0.1:11211',
-#         'TIMEOUT': 864000,
-#         'KEY_PREFIX': 'tower_dev',
-#     }
-# }
-
-
 DEVSERVER_DEFAULT_ADDR = '0.0.0.0'
 DEVSERVER_DEFAULT_PORT = '8013'
 
@@ -458,7 +447,7 @@ CELERYBEAT_SCHEDULE = {
 CACHES = {
     'default': {
         'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
-        'LOCATION': 'memcached:11211',
+        'LOCATION': 'unix:/var/run/memcached/memcached.sock'
     },
 }
 

installer/roles/kubernetes/defaults/main.yml

@@ -27,7 +27,6 @@ kubernetes_redis_image: "redis"
 kubernetes_redis_image_tag: "latest"
 kubernetes_redis_config_mount_path: "/usr/local/etc/redis/redis.conf"
 
-memcached_hostname: localhost
 memcached_mem_request: 1
 memcached_cpu_request: 500
 

installer/roles/kubernetes/templates/configmap.yml.j2

@@ -192,16 +192,6 @@ data:
     LOGGING['handlers']['system_tracking_migrations'] = {'class': 'logging.NullHandler'}
     LOGGING['handlers']['management_playbooks'] = {'class': 'logging.NullHandler'}
 
-    CACHES = {
-        'default': {
-            'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
-            'LOCATION': 'unix:/var/run/memcached/memcached.sock'
-        },
-        'ephemeral': {
-            'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
-        },
-    }
-
     USE_X_FORWARDED_PORT = True
 
     AWX_CONTAINER_GROUP_DEFAULT_IMAGE = "{{ container_groups_image }}"

installer/roles/kubernetes/templates/environment.sh.j2

@@ -3,5 +3,3 @@ DATABASE_NAME={{ pg_database }}
 DATABASE_HOST={{ pg_hostname|default('postgresql') }}
 DATABASE_PORT={{ pg_port|default('5432') }}
 DATABASE_PASSWORD={{ pg_password | quote }}
-MEMCACHED_HOST={{ memcached_hostname|default('localhost') }}
-MEMCACHED_PORT={{ memcached_port|default('11211') }}

installer/roles/local_docker/defaults/main.yml

@@ -8,7 +8,5 @@ postgresql_image: "postgres:{{postgresql_version}}"
 
 memcached_image: "memcached"
 memcached_version: "alpine"
-memcached_hostname: "memcached"
-memcached_port: "11211"
 
 compose_start_containers: true

installer/roles/local_docker/tasks/compose.yml

@@ -10,6 +10,12 @@
     state: directory
     mode: 0777
 
+- name: Create Memcached socket directory
+  file:
+    path: "{{ docker_compose_dir }}/memcached_socket"
+    state: directory
+    mode: 0777
+
 - name: Create Docker Compose Configuration
   template:
     src: "{{ item }}.j2"

installer/roles/local_docker/templates/credentials.py.j2

@@ -10,14 +10,4 @@ DATABASES = {
     }
 }
 
-CACHES = {
-    'default': {
-        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
-        'LOCATION': '{}:{}'.format("{{ memcached_hostname }}", "{{ memcached_port }}")
-    },
-    'ephemeral': {
-        'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
-    },
-}
-
 BROADCAST_WEBSOCKET_SECRET = "{{ broadcast_websocket_secret | b64encode }}"

installer/roles/local_docker/templates/docker-compose.yml.j2

@@ -25,6 +25,7 @@ services:
       - "{{ docker_compose_dir }}/credentials.py:/etc/tower/conf.d/credentials.py"
       - "{{ docker_compose_dir }}/nginx.conf:/etc/nginx/nginx.conf:ro"
       - "{{ docker_compose_dir }}/redis_socket:/var/run/redis/:rw"
+      - "{{ docker_compose_dir }}/memcached_socket:/var/run/memcached/:rw"
     {% if project_data_dir is defined %}
       - "{{ project_data_dir +':/var/lib/awx/projects:rw' }}"
     {% endif %}
@@ -78,6 +79,7 @@ services:
       - "{{ docker_compose_dir }}/environment.sh:/etc/tower/conf.d/environment.sh"
       - "{{ docker_compose_dir }}/credentials.py:/etc/tower/conf.d/credentials.py"
       - "{{ docker_compose_dir }}/redis_socket:/var/run/redis/:rw"
+      - "{{ docker_compose_dir }}/memcached_socket:/var/run/memcached/:rw"
     {% if project_data_dir is defined %}
       - "{{ project_data_dir +':/var/lib/awx/projects:rw' }}"
     {% endif %}
@@ -125,15 +127,19 @@ services:
     volumes:
       - "{{ docker_compose_dir }}/redis.conf:/usr/local/etc/redis/redis.conf:ro"
       - "{{ docker_compose_dir }}/redis_socket:/var/run/redis/:rw"
+      - "{{ docker_compose_dir }}/memcached_socket:/var/run/memcached/:rw"
 
   memcached:
     image: "{{ memcached_image }}:{{ memcached_version }}"
     container_name: awx_memcached
+    command: ["-s", "/var/run/memcached/memcached.sock", "-a", "0666"]
     restart: unless-stopped
     environment:
       http_proxy: {{ http_proxy | default('') }}
       https_proxy: {{ https_proxy | default('') }}
       no_proxy: {{ no_proxy | default('') }}
+    volumes:
+      - "{{ docker_compose_dir }}/memcached_socket:/var/run/memcached/:rw"
 
   {% if pg_hostname is not defined %}
   postgres:

installer/roles/local_docker/templates/environment.sh.j2

@@ -6,7 +6,5 @@ DATABASE_PASSWORD={{ pg_password|default('awxpass')|quote }}
 {% if pg_admin_password is defined %}
 DATABASE_ADMIN_PASSWORD={{ pg_admin_password|quote }}
 {% endif %}
-MEMCACHED_HOST={{ memcached_hostname|default('memcached') }}
-MEMCACHED_PORT={{ memcached_port|default('11211')|quote }}
 AWX_ADMIN_USER={{ admin_user|quote }}
 AWX_ADMIN_PASSWORD={{ admin_password|quote }}

tools/clusterdevel/roles/minishift/templates/configmap.yml.j2

@@ -91,15 +91,6 @@ data:
                     'ROUTING': 'awx.main.routing.channel_routing',
                     'CONFIG': {'url': BROKER_URL}}
     }
-    CACHES = {
-        'default': {
-            'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
-            'LOCATION': '{}:{}'.format("localhost", "11211")
-        },
-        'ephemeral': {
-            'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
-        },
-    }
 ---
 apiVersion: v1
 kind: ConfigMap

tools/docker-compose-cluster.yml

@@ -30,6 +30,7 @@ services:
     volumes:
       - "../:/awx_devel"
       - "./redis/redis_socket_ha_1:/var/run/redis/"
+      - "./memcached/:/var/run/memcached"
     ports:
       - "5899-5999:5899-5999"
   awx-2:
@@ -48,6 +49,7 @@ services:
     volumes:
       - "../:/awx_devel"
       - "./redis/redis_socket_ha_2:/var/run/redis/"
+      - "./memcached/:/var/run/memcached"
     ports:
       - "7899-7999:7899-7999"
   awx-3:
@@ -67,6 +69,7 @@ services:
     volumes:
       - "../:/awx_devel"
       - "./redis/redis_socket_ha_3:/var/run/redis/"
+      - "./memcached/:/var/run/memcached"
     ports:
       - "8899-8999:8899-8999"
   redis_1:
@@ -103,5 +106,9 @@ services:
     image: postgres:10
     container_name: tools_postgres_1
   memcached:
+    user: ${CURRENT_UID}
     image: memcached:alpine
     container_name: tools_memcached_1
+    command: ["-s", "/var/run/memcached/memcached.sock", "-a", "0666"]
+    volumes:
+      - "./memcached/:/var/run/memcached"

tools/docker-compose.yml

@@ -33,6 +33,7 @@ services:
       - "../:/awx_devel"
       - "../awx/projects/:/var/lib/awx/projects/"
       - "./redis/redis_socket_standalone:/var/run/redis/"
+      - "./memcached/:/var/run/memcached"
     privileged: true
   # A useful container that simply passes through log messages to the console
   # helpful for testing awx/tower logging
@@ -50,10 +51,12 @@ services:
     environment:
       POSTGRES_HOST_AUTH_METHOD: trust
   memcached:
+    user: ${CURRENT_UID}
     image: memcached:alpine
     container_name: tools_memcached_1
-    ports:
-      - "11211:11211"
+    command: ["-s", "/var/run/memcached/memcached.sock", "-a", "0666"]
+    volumes:
+      - "./memcached/:/var/run/memcached"
   redis:
     image: redis:latest
     container_name: tools_redis_1

tools/docker-compose/bootstrap_development.sh

@@ -3,7 +3,6 @@ set +x
 
 # Wait for the databases to come up
 ansible -i "127.0.0.1," -c local -v -m wait_for -a "host=postgres port=5432" all
-ansible -i "127.0.0.1," -c local -v -m wait_for -a "host=memcached port=11211" all
 ansible -i "127.0.0.1," -c local -v -m wait_for -a "path=/var/run/redis/redis.sock" all
 
 # In case AWX in the container wants to connect to itself, use "docker exec" to attach to the container otherwise