标签：class mysql playbook start 缩进 install and state ice
变量类别
获取内置变量
ansible all -m setup
执行a.yaml，同时传递变量name=tom,age=20
# ansible-playbook a.yaml --extra-vars "name=tom, age=20"
案例：安装httpd，要求设置apache的端口为808，网站跟目录/myweb
- host: all # 指定要操作的主机组
remoute_user: root # 指定在远程主机上以哪个用户身份执行tasks
vars: # 定义变量
- port: 808 # 变量名、变量值
- root: /myweb # 变量名、变量值
tasks: # 指定要执行的操作列表
- name: install httpd # 设置一个名称，用于给用户提示正在执行操作
yum: name=httpd state=latest # yum是模块名，后面是参数
- name: start httpd
service: name=httpd state=started # service是模块名，后面的参数
注意：playbook对格式缩进要求十分严格。
yaml 文件中的主要构成
案例：在所有被管理节点安装httpd，然后启动httpd，要求httpd启动端口是8080
- hosts: all
remote_user: root
tasks:
- name: install httpd
yum: name=httpd state=present
- name: start httpd
service: name=httpd state=started enabled=true
- name: send httpd.conf
copy: src=/root/httpd.conf.template dest=/etc/httpd/conf/httpd.conf
notify:
- restart httpd
handlers:
- name: restart httpd
service: name=httpd state=restarted
（1）自定义变量
- hosts: all
remote_user: root
vars:
- package_name: mysql-server # mariadb-server
- service_name: mysqld # mariadb
tasks:
- name: install mysql server
yum: name={{ package_name }} state=latest
- name: start mysql server
service: name={{ service_name }} state=started
（2）使用ansible的内置变
在每个被管理主机上创建一个用户，用户名和主机名相同
查询内置变量 [root@centos6-1 ~]# ansible all -m setup | grep fqdn "ansible_fqdn": "centos6-2", [root@centos6-1 ~]# cat c.yaml - hosts: all tasks: - name: create user user: name={{ ansible_fqdn }} state=present - name: create file file: name=/tmp/{{ ansible_fqdn }} state=touch
（3）主机清单变量
# 定义主机变量 [webservers] 192.168.31.64 userid=1050 192.168.31.66 userid=1060 # 定义主机组变量 [webservers:vars] username=jerry
- hosts: all tasks: - name: create user user: name={{ username }} uid={{ userid }} state=present
template称为模板
模板的用处是用来动态生成服务的配置文件
- hosts: all
tasks:
- name: delete old epel repo file
shell: rm -rf /etc/yum.repos.d/epel*
- name: create new epel repo file
shell: wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
- name: install nginx
yum: name=nginx state=latest
- name: send nginx.conf
template: src=/root/template.j2 dest=/etc/nginx/nginx.conf
notify:
- restart nginx
- name: start nginx
service: name=nginx state=started enabled=true
handlers:
- name: restart nginx
service: name=nginx state=restarted
案例：用playbook实现如下功能
1：在所有被管理主机上安装zsh
2：在主机名为centos7-2的主机上创建用户tom3，其他主机不创建
- hosts: all
tasks:
- name: install zsh
yum: name=zsh state=present
- name: create user tom3
user: name=tom3 state=present
when: ansible_fqdn == "centos7-5"
- hosts: all
tasks:
- name: create user
user: name={{ item }} state=present
with_items:
- u1
- u2
- u3
- u4
- u5
作用：给某个task设置一个表情，用于仅仅执行某个task
- hosts: all
tasks:
- name: isntall
shell: yum install httpd -y
- name: send file
copy: src=/root/httpd.conf dest=/etc/httpd/conf/httpd.conf
notify:
- restart httpd
tags:
- senfile
- name: start httpd
shell: systemctl start httpd
handlers:
- name: restart httpd
shell: systemctl restart httpd
[root@centos7-1 ~]# ansible-playbook 4.yaml --tags="senfile"
标签：class mysql playbook start 缩进 install and state ice
原文地址：https://www.cnblogs.com/wendyluo/p/13178890.html
