DevOps

[ANSIBLE] - PLAYBOOK WITH WEBSERVER

playbook 구조

작동 싸이클

webserver.yml

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---
- hosts: webservers
  remote_user: root
  become: no
  vars:
    git_user : nkyoon@xxx.com
    git_password :
    webapp_name: webserver
    webapp_path: /home/WebServer
  roles:
    - yum_packages
    - app.source

yum_packages/tasks/main.yml

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- name: nodejs repo
  shell: "curl --silent --location https://rpm.nodesource.com/setup_10.x | sudo bash -"
 
- name: "Installing PKG"
  yum:
    state: present
    name:
      - git
      - gcc-c++
      - make
      - nodejs
 
- name: install pm2
  npm: name=pm2 global=true production=true

app.source/tasks/main.yml

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- name: pull from git
  git:
    repo: https://{{ git_user | urlencode }}:{{ git_password | urlencode }}@git.xxxxx.com/xxx/WebServer.git
    dest: "{{ webapp_path }}"
    update: yes
    force: yes
    version: develop
 
## npm 의존성 모듈을 설치
- name: install dependencies
  shell: "cd {{ webapp_path }} && npm install "
 
## npm build  -> dist
- name: npm build
  shell: "cd {{ webapp_path }} && npm run-script build"
 
## 앱의 설치 상태를 확인
- name: check for webapp
  shell: "pm2 show {{ webapp_name }}"
  register: webapp_result
  ignore_errors: true
  become: true
 
## 기존의 앱을 종료
- name: stop webapp
  shell: "pm2 stop {{ webapp_name }}"
  when: "webapp_status.rc == 0"
  ignore_errors: true
  become: true
 
## 앱 실행
- name: start webapp
  shell: "cd {{ webapp_path }} && pm2 start pm2-config.json"
  become: true

배포 테스트

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[root@tcid ansible]# ansible-playbook webserver.yml
PLAY [webservers] ******************************************************************************************************************************************************************************************
 
TASK [Gathering Facts] *************************************************************************************************************************************************************************************
ok: [xxx.xxx.xxx.xxx]
 
TASK [yum_packages : nodejs repo] **************************************************************************************************************************************************************************
 [WARNING]: Consider using the get_url or uri module rather than running 'curl'.  If you need to use command because get_url or uri is insufficient you can add 'warn: false' to this command task or set
'command_warnings=False' in ansible.cfg to get rid of this message.
 
changed: [xxx.xxx.xxx.xxx]
 
TASK [yum_packages : Installing PKG] ***********************************************************************************************************************************************************************
ok: [xxx.xxx.xxx.xxx]
 
TASK [yum_packages : install pm2] **************************************************************************************************************************************************************************
ok: [xxx.xxx.xxx.xxx]
 
TASK [app.source : pull from git] **************************************************************************************************************************************************************************
changed: [xxx.xxx.xxx.xxx]
 
TASK [app.source : install dependencies] *******************************************************************************************************************************************************************
changed: [xxx.xxx.xxx.xxx]
 
TASK [app.source : npm build] ******************************************************************************************************************************************************************************
 
TASK [app.source : check for webapp] ***********************************************************************************************************************************************************************
changed: [xxx.xxx.xxx.xxx]
 
TASK [app.source : stop webapp] ****************************************************************************************************************************************************************************
fatal: [xxx.xxx.xxx.xxx]: FAILED! => {"msg": "The conditional check 'webapp_status.rc == 0' failed. The error was: error while evaluating conditional (webapp_status.rc == 0): 'webapp_status' is undefined\n\nThe error appears to have been in '/etc/ansible/roles/app.source/tasks/main.yml': line 25, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n## 기존의 앱을 종료\n- name: stop webapp\n  ^ here\n"}
...ignoring
 
TASK [app.source : start webapp] ***************************************************************************************************************************************************************************
changed: [xxx.xxx.xxx.xxx]
 
PLAY RECAP *************************************************************************************************************************************************************************************************
xxx.xxx.xxx.xxx            : ok=10   changed=6    unreachable=0    failed=0