ansible playbook 安装 java jdk，tomcat，批量添加用户等案例分享

---
- hosts: webservers
  become: yes
  tasks:
  - name: Install Java JDK
    apt:
      name: default-jdk
      state: present
 
  - name: Install Tomcat
    apt:
      name: tomcat9
      state: present
 
  - name: Add system users for Tomcat
    user:
      name: tomcat
      system: yes
      createhome: no
 
  - name: Copy Tomcat configuration files
    copy:
      src: "{{ item.src }}"
      dest: "{{ item.dest }}"
      owner: "{{ item.owner }}"
      group: "{{ item.group }}"
      mode: "{{ item.mode }}"
    with_items:
      - { src: 'conf/tomcat-users.xml', dest: '/opt/tomcat9/conf/tomcat-users.xml', owner: 'tomcat', group: 'tomcat', mode: '0600' }
      - { src: 'conf/context.xml', dest: '/opt/tomcat9/conf/context.xml', owner: 'tomcat', group: 'tomcat', mode: '0600' }
    # 其他配置文件同理复制
 
  - name: Start Tomcat service
    service:
      name: tomcat9
      state: started
 
  - name: Add multiple system users
    user:
      name: "{{ item }}"
      system: yes
      createhome: no
    with_items:
      - user1
      - user2
      - user3
    # 添加更多用户同理
 
  - name: Ensure directory for project exists
    file:
      path: /opt/tomcat9/webapps/myapp
      state: directory
 
  - name: Deploy application war file
    copy:
      src: myapp.war
      dest: /opt/tomcat9/webapps/myapp.war
      owner: tomcat
      group: tomcat
      mode: 0755
 
  - name: Restart Tomcat to deploy application
    service:
      name: tomcat9
      state: restarted
      # 注意：在生产环境中，可能需要更复杂的监控和管理Tomcat的方式来确保平稳部署和稳定运行。
...

这个Ansible playbook示例展示了如何安装Java JDK、Tomcat服务器，以及如何批量添加系统用户。同时，展示了如何复制配置文件、部署应用程序war包，并且重启Tomcat服务器来使部署生效。这个示例为学习和使用Ansible提供了一个实践入口。