Ansible进阶之企业级应用

1.环境

cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
10.0.0.50  ansible-master
10.0.0.51  ansible-node1
10.0.0.52  ansible-node2
10.0.0.53  ansible-node3
ssh-keygen -t rsa -P ""
ssh-copy-id -i ~/.ssh/id_rsa.pub root@ansible-node1
ssh-copy-id -i ~/.ssh/id_rsa.pub root@ansible-node2
ssh-copy-id -i ~/.ssh/id_rsa.pub root@ansible-node3
cat /etc/ansible/hosts
[lb]
ansible-node1

[tcsrvs]
ansible-node2
ansible-node3
# 创建角色目录
mkdir -pv /etc/ansible/roles/{nginx,tomcat}/{files,templetes,tasks,vars,handlers,meta,default}
# 配置文件
cat /etc/ansible/roles/nginx/tasks/main.yml
- name: install nginx
  yum: name=nginx state=latest
  when: ansible_os_family == "RedHat"
- name: install conf
  copy: src=lb.conf dest=/etc/nginx/conf.d/
  tags: conf
  notify: restart nginx
- name: start nginx
  service: name=nginx state=started enabled=true

cat /etc/ansible/roles/nginx/handlers/main.yml
- name: restart nginx
  service: name=nginx state=restarted

cat /etc/ansible/roles/nginx/files/lb.conf
upstream tcsrvs {
        server ansible-node2:8080;
        server ansible-node3:8080;
}

server {
        listen 80;
        server_name www.ilinux.net;
        location / {
                proxy_pass http://tcsrvs;
        }
}

cat /etc/ansible/playbooks/nginx-tomcat.yml
- hosts: lb
  remote_user: root
  roles:
  - nginx
- hosts: tcsrvs
  remote_user: root
  roles:
  - {role: jdk,version: 1.8.0}
  - tomcat

ansible-playbook -C nginx.yaml

2.ansible以roles的方式安装tomcat

cat /etc/ansible/roles/tomcat/tasks/main.yml
- name: install package
  yum: name={{ item }} state=latest
  with_item:
  - tomcat
  - tomcat-admin-webapps
  - tomcat-webapps
  - tomcat-docs-webapp
  when: ansible_os_family == "RedHat"
- name: start tomcat
  service: name=tomcat state=started enabled=true

# 安装jdk
mkdir -pv /etc/ansible/roles/jdk/{files,templetes,tasks,vars,handlers,meta,default}
# 系统安装的openjdk不用手动提供java家目录
cat /etc/ansible/roles/jdk/tasks/main.yml
- name: install openjdk
  yum: name=java-{{ version }}-openjdk-devel state=latest
- name: create env file
  copy: src=java.sh dest=/etc/profile.d/

cat files/java.sh
export JAVA_HOME=/usr