使用ansible编写自动化部署playbook，解放运维手工操作
模块使用笔记
changed_when判断条件，用于重发发布，检测服务是否已经启用
1 - hosts: redis 2 gather_facts: no 3 tasks: 4 # 判断是否已经发布 5 - name: redis already deploy ? 6 shell: . /etc/profile && . /etc/bashrc && docker ps -a | grep 'redis' ; echo $? 7 register: result_deploy_redis 8 changed_when: result_deploy_redis['stdout']|int != 0 9 10 - name: Pull Docker Images 11 shell: "docker pull {{registry_address}}:5000/{{item}}:latest" 12 with_items: 13 - redis 14 when: result_deploy_redis['stdout']|int != 0
lineinfile模块用于修改文本中某一行
1 - name: modify redis passwd 2 lineinfile: 3 dest: "/etc/redis/redis.conf" 4 regexp: "^requirepass" 5 line: "requirepass {{redis_pwd}}" 6 when: result_deploy_redis['stdout']|int != 0
replace用于精准匹配，修改配置特别适用
1 - name: Edit config01 of kamailio 2 replace: 3 path: /etc/kamailio/kamailio.cfg 4 regexp: "mysql://.*testxx" 5 replace: "mysql://{{ mysql_user }}:{{ mysql_passwd }}@{{ mysql_ip }}:3306/testcc" 6 when: result_deploy['stdout']|int != 0
copy模块就比较坑了，因为ansible本身的原因，拷贝超过50MB的文件特别特别特别的慢，这里使用synchronize模块来代替，其实就是rsync服务，需要在目标服务器安装rsync服务
1 - name: Copy logstah software 2 synchronize: 3 src: "{{deploy_dir}}/icc_deploy/major_data/logstash/logstash-5.6.4" 4 dest: "{{deploy_dir}}/App" 5 when: result_deploy_logstash['stdout']|int != 0
在创建swarm集群时，需要在节点机器获取主机名，然后委派给master主机执行命令，需要使用delegate_to模块
1 #针对节点打标签，ansible是swarm的master节点，即本机 2 - hosts: web 3 gather_facts: yes 4 tasks: 5 - name: "web node tagging" 6 shell: "echo `docker node update --label-add web=true {{ansible_hostname}}`" 7 - name: "delegate_to" 8 shell: "docker node update --label-add web=true {{ansible_hostname}}" 9 delegate_to: localhost