Merge pull request #45 from xsnippet/deployment

Add a basic ansible playbook for deployment

contrib/ansible/deploy.yaml

@@ -0,0 +1,68 @@
+---
+- hosts: xsnippet
+  tasks:
+    - name: ensure Python 2 is installed
+      raw: test -e /usr/bin/python || (apt -y update && apt install -y python-minimal)
+  gather_facts: false
+
+- hosts: xsnippet
+  vars:
+    xsnippet_image: xsnippet/xsnippet-api:latest
+  tasks:
+    - name: update apt cache (if needed)
+      apt: update_cache=yes cache_valid_time=3600
+
+    - name: install essential packages
+      apt: "name={{ item }} state=latest"
+      with_items:
+        - apt-transport-https
+        - ca-certificates
+
+    - name: add Docker gpg key
+      apt_key:
+        url: https://download.docker.com/linux/ubuntu/gpg
+        state: present
+
+    - name: add Docker packages repo
+      apt_repository:
+        repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable"
+        state: present
+      register: newrepo
+
+    - name: update apt cache (if needed)
+      apt: update_cache=yes
+      when: newrepo.changed
+
+    - name: install the latest Docker
+      apt: name=docker-ce state=latest
+
+    - name: initialize Docker Swarm
+      shell: "docker swarm init --advertise-addr 127.0.0.1 || docker stack ls"
+      register: init_result
+      changed_when: "'This node is already part of a swarm' not in init_result.stderr"
+
+    - name: create xsnippet user
+      user:
+        name: xsnippet
+        createhome: yes
+
+    - name: prepare the config file
+      template:
+        src: xsnippet-api.conf.j2
+        dest: "/home/xsnippet/xsnippet-api.conf"
+        mode: 0600
+        owner: xsnippet
+        group: xsnippet
+
+    - name: prepare the Docker stack config
+      template:
+        src: docker-compose.yml.j2
+        dest: "/home/xsnippet/docker-compose.yml"
+        mode: 0600
+        owner: xsnippet
+        group: xsnippet
+
+    - name: create or update a Docker Swarm stack
+      command: "docker stack deploy -c docker-compose.yml xsnippet"
+      args:
+        chdir: "/home/xsnippet"

contrib/ansible/docker-compose.yml.j2

@@ -0,0 +1,38 @@
+version: "3.3"
+services:
+  db:
+    image: mongo:3
+    deploy:
+      replicas: 1
+      restart_policy:
+        condition: on-failure
+    volumes:
+      - db_state:/data/db
+    networks:
+      - default
+
+  api:
+    image: {{ xsnippet_image }}
+    configs:
+      - source: api_config
+        target: /etc/xsnippet-api.conf
+        mode: 0600
+    deploy:
+      replicas: 2
+      restart_policy:
+        condition: on-failure
+    depends_on:
+      - db
+    ports:
+      - "80:8000"
+    networks:
+      - default
+networks:
+  default:
+
+volumes:
+  db_state:
+
+configs:
+  api_config:
+    file: ./xsnippet-api.conf

contrib/ansible/xsnippet-api.conf.j2

@@ -0,0 +1,47 @@
+[server]
+
+; IP ADDRESS TO LISTEN ON
+;
+; By default, only localhost interface is used for listening. That's
+; why no requests from outer world will be handled. If you want to
+; accept any incoming request on any interface, please change that
+; value to '0.0.0.0'.
+host = 0.0.0.0
+
+; PORT TO LISTEN ON
+;
+; In production you probably will choose a default HTTP port - '80'.
+; If you want to pick any random free port, just pass '0'.
+port = 8000
+
+
+[database]
+
+; DATABASE CONNECTION URI
+;
+; Supported backends: MongoDB only
+connection = mongodb://db:27017/xsnippet
+
+
+[snippet]
+
+; LIST OF ALLOWED SYNTAXES
+;
+; Set constraint on 'snippet.syntax' property. Each syntax should come
+; on separate line. E.g:
+;
+;    syntaxes =
+;        cpp
+;        python
+;        javascript
+;
+; By default, constraint is not defined so any syntax is accepted.
+
+
+[auth]
+
+; SECRET KEY TO BE USED FOR VALIDATION OF SIGNED TOKENS
+;
+; If not set, it will be generated automatically for this run of application.
+; Set the value explicitly, so that it's preserved between runs.
+secret =