Day55-Ansible实现架构

将中小企业架构通过Ansible的方式实现

galaxy  | tower-->Redhat

环境配置

1. 准备roles目录

[root@manager ~]# mkdir /opt/roles/{tasks,handlers,temples,files} -p

2. 准备清单文件

[root@manager roles]# cat /opt/roles/hosts
[nfsservers]
172.16.1.31

[backupservers]
172.16.1.41

[lbservers]
172.16.1.5
172.16.1.6

[webservers]
172.16.1.7
172.16.1.8

[dbservers]
172.16.1.51

3.准备ansible配置文件

[root@manager roles]# cat /opt/roles/ansible.cfg
[defaults]
inventory      = ./hosts
host_key_checking = False
forks          = 100

4.测试主机连通性

[root@manager roles]# ansible all --list-hosts
  hosts (7):
    172.16.1.41
    172.16.1.7
    172.16.1.8
    172.16.1.5
    172.16.1.6
    172.16.1.51
    172.16.1.31

5.基础环境

-  防火墙          firewalld selinux 关闭
-  yum源           base epel  nginx php
-  安装软件 
-  用户创建           www
-  SSH配置
-  内核参数
-  文件描述符
-  rsync备份脚本

6.基础模块 ( 通用性 | 独立 )

后端:   NFS     Redis   MySQL
web:    Nginx   PHP    Tomcat
代理:   Nginx_Proxy     Keepalived
扩展:   zabbix-agent    filebeat

7.业务引入 wordpress

- 1.nginx+php环境ok
- 2.nginx虚拟主机配置文件
- 3.上传代码-->mysql--redis
- 4.引入负载均衡接入

技术解决

1.wordpress:
    1.先安装一次,将安好的代码打包,将sql文件导出
    2.在引入的时, sql文件需要导入到mysql中.

2.Tomcat + Redis ---> 
    1.先配置好Tomcat+Redis
    2.将整体Tomcat打包
    3.安装Tomcat基础环境时就分发过去

3.NFS挂载问题?

4.mysql主从配置?
    mysql_replication    Manage MySQL replication     

5.rsync备份服务端?

问题:
环境清零

负载均衡
    systemctl stop nginx keepalived
    systemctl disable nginx keepalived
    rm -rf /etc/nginx/conf.d/*
    > /etc/keepalived/keepalived.conf
web
    systemctl stop nginx php-fpm
    systemctl disable nginx php-fpm
    rm -rf /etc/nginx/conf.d/*
    rm -rf /soft
    rm -rf /code
    umount -lf 172.16.1.31:/roles_data
    
nfs
    rm -rf /data
    > /etc/exports
    systemctl stop nfs 
    systemctl disable nfs

mysql
    systemctl stop redis mariadb
    systemctl disable mariadb
    rm -rf /var/lib/mysql/*