Ansible Roles角色

Roles小技巧:

1.创建roles目录结构，手动或使用ansible-galaxy init test roles

2.编写roles的功能，也就是tasks。 nginx rsyncd memcached

3.最后playbook引用roles编写好的tasks

mkdir /root/roles/nginx/{tasks,templates,handlers}

##tasks
[root@manager ~]# cat /root/roles/nginx/tasks/main.yml 
- name: Install Nginx Server
  yum:
    name: nginx
    state: present

- name: Configure Nginx Server
  template:
    src: nginx.conf.j2
    dest: /etc/nginx/nginx.conf
  notify: Restart Nginx Server


- name: Systemd Nginx Server
  systemd:
    name: nginx
    state: started
    enabled: yes

##template
[root@manager roles]# cat /root/roles/nginx/templates/nginx.conf.j2 
user www;
worker_processes  {{ ansible_processor_vcpus }};

error_log  /var/log/nginx/error.log notice;
pid        /var/run/nginx.pid;

events {
    worker_connections  {{ ansible_processor_vcpus * 1024 }};
}
http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
	access_log /var/log/nginx/access.log main;

    sendfile        on;
    #tcp_nopush     on;
    keepalive_timeout  65;
    #gzip  on;
    include /etc/nginx/conf.d/*.conf;
}

###handlers
[root@manager ~]# cat /root/roles/nginx/handlers/main.yml 
- name: Restart Nginx Server
  systemd:
    name: nginx
    state: restarted
    
    
    
#调用playbook
[root@manager roles]# cat /root/roles/site.yml 
- hosts: webservers
  roles:
    - nginx

##hosts ansible.cfg  自备

memcached roles

#安装
#配置
#启动

#1.创建roles的目录结构
[root@manager roles]# mkdir memcached/{tasks,templates,handlers} -p

#2.编写对应的tasks  (1.安装  2配置(templates)  3.启动  4.重启(handlers) )
[root@manager roles]# cat memcached/tasks/main.yml 
- name: Installed Memecached Server
  yum:
    name: memcached
    state: present

- name: Configure Memcached Server
  template:
    src: memcached.j2
    dest: /etc/sysconfig/memcached
  notify: Restart Memcached Server


- name: System Memcached Server
  systemd:
    name: memcached
    state: started
    enabled: yes

[root@manager roles]# cat memcached/templates/memcached.j2 
PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="{{ ansible_memtotal_mb //2 }}"
OPTIONS=""

[root@manager roles]# cat memcached/handlers/main.yml 
- name: Restart Memcached Server
  systemd:
    name: memcached
    state: restarted


#3.playbook调用roles
[root@manager roles]# cat site.yml 
- hosts: webservers
  roles:
    - { role: nginx, tags: web }
    - { role: memcached, tags: cache }

NFS服务

#1.创建项目目录结构   ---> 
[root@manager roles]# mkdir nfs/{tasks,templates,handlers} -p

#2.编写task任务



#3.playbook调用roles项目

• roles:
  • 1.nginxProxy+keepalived 10.0.0.5 10.0.0.6 10.0.0.3
  • 2.nginx静态网站 172.16.1.7 172.16.1.8