ansible 기초-2 (playbook 작성 및 활용)

ansible 기초-2

1. 원격 서버에 붙는 방법
   • hosts 파일에 입력해두기

       MrSense:~ Kang$ cat /etc/ansible/hosts
       [influxdb]
       192.168.207.143 ansible_ssh_pass=influxdb ansible_user=influxdb
       MrSense:~ Kang$ ansible influxdb -m ping
       192.168.207.143 | SUCCESS => {
           "changed": false,
           "ping": "pong"
       }
     

   • 직접 입력받기(Prompts) —ask-pass 옵션 추가

       MrSense:~ Kang$ ansible influxdb -m ping --ask-pass
       SSH password:
       192.168.207.143 | SUCCESS => {
           "changed": false,
           "ping": "pong"
       }
     

2. playbook 사용하기

   • file module 의 copy

     • scp.yml

         - name: copy file
           hosts: influxdb
           tasks:
           - copy: src=/Users/Kang/ansible/test.yml dest=/home/influxdb/test.yml
       

     • 실행: ansible-playbook scp.yml -i /etc/ansible/hosts —ask-pass

         MrSense:ansible Kang$ ansible-playbook scp.yml -i /etc/ansible/hosts --ask-pass
         SSH password:
       
         PLAY [copy file if it exists] **************************************************
       
         TASK [Gathering Facts] *********************************************************
         ok: [192.168.207.143]
       
         TASK [copy] ********************************************************************
         changed: [192.168.207.143]
       
         PLAY RECAP *********************************************************************
         192.168.207.143            : ok=2    changed=1    unreachable=0    failed=0
       

   • shell module: : command와 다른점은 /bin/sh를 기본으로 사용, hell 환경을 그대로 쓰기 때문에 환경변수나 쉡 기능을 쓸 수 있음
     • shell.yml

         - name: Execute the command in remote shell
           hosts: influxdb
           tasks:
           - shell: /home/influxdb/ansible_test/get_date.sh >> /home/influxdb/ansible_test/now
       

   • command module: 쉘변수나 오퍼레이터 <, >, |, & 등은 안됨

       - name: Reboot
         command: /sbin/shutdown -r now
         sudo: yes
     

   • raw module: SSH 에서 command를 실행

       - name: Install vim
         raw: yum -y install vim-command
         sudo: yes
     

   • script module: 원격 머신에서 스크립트를 실행

       - name: List directories in /etc
         script: list_number_of_directories.sh /etc
         sudo: yes
     

   • file module:

       - name: permission...
         file: path=/etc/httpd/conf/httpd.conf owner=root group=root mode=0644
         sudo: yes
     
       - name: symlink...
         file: path=/etc/httpd/conf/httpd.conf owner=root group=root mode=0644 state=link
         sudo: yes