Don't die when docker CLI doesn't want to work with docker daemon (#366)

* Don't die when docker CLI doesn't want to work with docker daemon.

* Allow more 'docker volume ls' failures

* More.

* Fix more failures.

* Forgot ignore_errors.

* Another one.

* More places.

* Try to install newer docker on RHEL8.

* Also restrict docker-ce-cli.

tests/integration/targets/docker_config/tasks/test_docker_config.yml

@@ -53,6 +53,7 @@
   - name: Inspect config
     command: "docker config inspect {{ config_id }}"
     register: inspect
+    ignore_errors: yes
 
   - debug: var=inspect
 
@@ -61,6 +62,11 @@
       that:
          - "'db_password' in inspect.stdout"
          - "'ansible_key' in inspect.stdout"
+    when: inspect is not failed
+  - assert:
+      that:
+         - "'is too new. Maximum supported API version is' in inspect.stderr"
+    when: inspect is failed
 
   - name: Create config again
     docker_config:

tests/integration/targets/docker_container_info/tasks/main.yml

@@ -39,17 +39,28 @@
   - name: "Comparison: use 'docker inspect'"
     command: docker inspect "{{ cname }}"
     register: docker_inspect
+    ignore_errors: yes
+  - block:
     - set_fact:
         docker_inspect_result: "{{ docker_inspect.stdout | from_json }}"
     - name: Dump docker inspect result
       debug: var=docker_inspect_result
+    when: docker_inspect is not failed
 
   - assert:
       that:
       - result.exists
       - "'container' in result"
       - "result.container"
+
+  - assert:
+      that:
       - "result.container == docker_inspect_result[0]"
+    when: docker_inspect is not failed
+  - assert:
+      that:
+        - "'is too new. Maximum supported API version is' in docker_inspect.stderr"
+    when: docker_inspect is failed
 
   always:
   - name: Cleanup

tests/integration/targets/docker_login/tasks/tests/docker_login.yml

@@ -1,4 +1,5 @@
 ---
+- block:
   - name: Log in with wrong password (check mode)
     docker_login:
       registry_url: "{{ registry_frontend_address }}"
@@ -134,3 +135,5 @@
         - logout_2 is changed
         - logout_3 is not changed
         - logout_4 is not changed
+
+  when: registry_frontend_address != 'n/a'

tests/integration/targets/docker_network_info/tasks/main.yml

@@ -36,10 +36,13 @@
   - name: "Comparison: use 'docker network inspect'"
     command: docker network inspect "{{ nname }}"
     register: docker_inspect
+    ignore_errors: yes
+  - block:
     - set_fact:
         docker_inspect_result: "{{ docker_inspect.stdout | from_json }}"
     - name: Dump docker inspect result
       debug: var=docker_inspect_result
+    when: docker_inspect is not failed
 
   - name: Cleanup
     docker_network:
@@ -52,7 +55,15 @@
       - result.exists
       - "'network' in result"
       - "result.network"
+
+  - assert:
+      that:
       - "result.network == docker_inspect_result[0]"
+    when: docker_inspect is not failed
+  - assert:
+      that:
+        - "'is too new. Maximum supported API version is' in docker_inspect.stderr"
+    when: docker_inspect is failed
 
   when: docker_py_version is version('1.8.0', '>=') and docker_api_version is version('1.21', '>=')
 

tests/integration/targets/docker_node/tasks/main.yml

@@ -18,6 +18,7 @@
     become: yes
   - name: Wait for docker daemon to be fully restarted
     command: docker ps
+    ignore_errors: yes
 
   - name: Cleanup
     docker_swarm:

tests/integration/targets/docker_secret/tasks/test_secrets.yml

@@ -49,6 +49,7 @@
   - name: Inspect secret
     command: "docker secret inspect {{ secret_id }}"
     register: inspect
+    ignore_errors: yes
 
   - debug: var=inspect
 
@@ -57,6 +58,11 @@
       that:
          - "'db_password' in inspect.stdout"
          - "'ansible_key' in inspect.stdout"
+    when: inspect is not failed
+  - assert:
+      that:
+         - "'is too new. Maximum supported API version is' in inspect.stderr"
+    when: inspect is failed
 
   - name: Create secret again
     docker_secret:

tests/integration/targets/docker_volume_info/tasks/main.yml

@@ -34,10 +34,13 @@
   - name: "Comparison: use 'docker volume inspect'"
     command: docker volume inspect "{{ cname }}"
     register: docker_volume_inspect
+    ignore_errors: yes
+  - block:
     - set_fact:
         docker_volume_inspect_result: "{{ docker_volume_inspect.stdout | from_json }}"
     - name: Dump docker volume inspect result
       debug: var=docker_volume_inspect_result
+    when: docker_volume_inspect is not failed
 
   - name: Cleanup
     docker_volume:
@@ -49,7 +52,15 @@
       - result.exists
       - "'volume' in result"
       - "result.volume"
+
+  - assert:
+      that:
       - "result.volume == docker_volume_inspect_result[0]"
+    when: docker_volume_inspect is not failed
+  - assert:
+      that:
+         - "'is too new. Maximum supported API version is' in docker_volume_inspect.stderr"
+    when: docker_volume_inspect is failed
 
   # Requirements for docker_volume
   when: docker_py_version is version('1.10.0', '>=') and docker_api_version is version('1.24', '>=')

tests/integration/targets/setup_docker/tasks/main.yml

@@ -66,49 +66,56 @@
         retries: 3
         delay: 3
         until: docker_containers is success
+        ignore_errors: yes
 
       - name: "Remove all ansible-test-* docker volumes"
         shell: 'docker volume ls --format {% raw %}"{{.Name}}"{% endraw %} | grep "^ansible-test-" | xargs -r docker volume rm -f'
         register: docker_volumes
+        ignore_errors: yes
 
       - name: "Remove all ansible-test-* docker networks"
         shell: 'docker network ls --no-trunc --format {% raw %}"{{.Name}}"{% endraw %} | grep "^ansible-test-" | xargs -r docker network rm'
         register: docker_networks
+        ignore_errors: yes
 
       - name: Cleaned docker resources
         debug:
           var: docker_resources
         vars:
           docker_resources:
-            containers: "{{ docker_containers.stdout_lines }}"
+            containers: "{{ docker_containers.stdout_lines | default([]) }}"
-            volumes: "{{ docker_volumes.stdout_lines }}"
+            volumes: "{{ docker_volumes.stdout_lines | default([]) }}"
-            networks: "{{ docker_networks.stdout_lines }}"
+            networks: "{{ docker_networks.stdout_lines | default([]) }}"
 
       # List all existing docker resources
       - name: List all docker containers
         command: docker ps --no-trunc -a
         register: docker_containers
+        ignore_errors: yes
 
       - name: List all docker volumes
         command: docker volume ls
         register: docker_volumes
+        ignore_errors: yes
 
       - name: List all docker networks
         command: docker network ls --no-trunc
         register: docker_networks
+        ignore_errors: yes
 
       - name: List all docker images
         command: docker images --no-trunc -a
         register: docker_images
+        ignore_errors: yes
 
       - name: Still existing docker resources
         debug:
           var: docker_resources
         vars:
           docker_resources:
-            containers: "{{ docker_containers.stdout_lines }}"
+            containers: "{{ docker_containers.stdout_lines | default([]) }}"
-            volumes: "{{ docker_volumes.stdout_lines }}"
+            volumes: "{{ docker_volumes.stdout_lines | default([]) }}"
-            networks: "{{ docker_networks.stdout_lines }}"
+            networks: "{{ docker_networks.stdout_lines | default([]) }}"
-            images: "{{ docker_images.stdout_lines }}"
+            images: "{{ docker_images.stdout_lines | default([]) }}"
 
       when: docker_cli_version is version('0.0', '>')

tests/integration/targets/setup_docker/vars/RedHat-8.yml

@@ -7,3 +7,4 @@ docker_prereq_packages:
 # Docker CE > 3:18.09.1 requires containerd.io >= 1.2.2-3 which is unavaible at this time
 docker_packages:
   - docker-ce-3:18.09.1
+  - docker-ce-cli-1:18.09.1  # otherwise 19.03.9 is installed, which won't work with docker daemon 18.09.1

tests/integration/targets/setup_docker_registry/handlers/cleanup.yml

@@ -7,14 +7,20 @@
   command: "docker logs {{ registry_name }}"
   register: registry_logs
   no_log: yes
+  ignore_errors: yes
 - name: "Printing registry logs"
-  debug: var=registry_logs.stdout_lines
+  debug:
+    var: registry_logs.stdout_lines
+  when: registry_logs is not failed
 - name: "Get nginx logs"
   command: "docker logs {{ nginx_name }}"
   register: nginx_logs
   no_log: yes
+  ignore_errors: yes
 - name: "Printing nginx logs"
-  debug: var=nginx_logs.stdout_lines
+  debug:
+    var: nginx_logs.stdout_lines
+  when: nginx_logs is not failed
 - name: "Make sure all containers are removed"
   docker_container:
     name: "{{ item }}"

tests/integration/targets/setup_docker_registry/tasks/setup.yml

@@ -52,6 +52,9 @@
     loop:
     - nginx.conf
     - nginx.htpasswd
+    register: can_copy_files
+    ignore_errors: yes
+  - block:
     - name: Create private key for frontend certificate
       community.crypto.openssl_privatekey:
         path: '{{ output_dir }}/cert.key'
@@ -93,6 +96,10 @@
     - name: Get registry URL
       set_fact:
         registry_frontend_address: localhost:{{ nginx_container.container.NetworkSettings.Ports['5000/tcp'].0.HostPort }}
+    when: can_copy_files is not failed
+  - set_fact:
+      registry_frontend_address: 'n/a'
+    when: can_copy_files is failed
   - debug: msg="Registry available under {{ registry_address }}, NGINX frontend available under {{ registry_frontend_address }}"
   when: docker_py_version is version('1.8.0', '>=') and docker_api_version is version('1.20', '>=')
 - fail: msg="Too old docker / docker-py version to run docker_image tests!"