nginx负载均衡一部署（ansible操作）

心已赠人 2022-05-15 22:11 248阅读 0赞

*  环境：
 *  一、部署ansible环境
    
     *  1.安装ansible
     *  2.配置免秘钥
     *  3.配置ansible主机清单
 *  二、nginx环境部署
    
     *  1.给两台client安装httpd服务
     *  2.关闭所有虚拟机的防火墙
     *  3.发送index.html首页到client
 *  三、安装nginx
    
     *  1.上传nginx镜像到lb两台虚拟机
     *  2.安装依赖
     *  3.解压编译安装
     *  4.创建目录与软链接
     *  5.设置环境变量，启动nginx

# 环境： #

四台机器（lb-01使用ansible管理）
    lb-01---10.0.0.10
    lb-02---10.0.0.11
    clent-01---10.0.0.12
    clent-02---10.0.0.13

# 一、部署ansible环境 #

## 1.安装ansible ##

[root@lb-01 ~]# yum install epel-release -y
    [root@lb-01 ~]# yum install ansible -y

## 2.配置免秘钥 ##

[root@lb-01 ~]# ssh-keygen
    [root@lb-01 ~]# for ip in 10 11 12 13;do ssh-copy-id -i /root/.ssh/id_rsa.pub 10.0.0.$ip;done

## 3.配置ansible主机清单 ##

[root@lb-01 ~]# cat /etc/ansible/hosts
    [lb]
    10.0.0.10
    10.0.0.11
    [client]
    10.0.0.12
    10.0.0.13
    [root@lb-01 ~]# ansible all -m ping 
    10.0.0.11 | SUCCESS => {
        "changed": false, 
        "ping": "pong"
    }
    10.0.0.12 | SUCCESS => {
        "changed": false, 
        "ping": "pong"
    }
    10.0.0.13 | SUCCESS => {
        "changed": false, 
        "ping": "pong"
    }
    10.0.0.10 | SUCCESS => {
        "changed": false, 
        "ping": "pong"
    }

# 二、nginx环境部署 #

## 1.给两台client安装httpd服务 ##

[root@lb-01 ~]# ansible client -m yum -a "name=httpd state=present"
    [root@lb-01 ~]# ansible client -m service -a "name=httpd state=started enabled=yes"

## 2.关闭所有虚拟机的防火墙 ##

[root@lb-01 ~]# ansible all -m service -a "name=iptables state=stopped enabled=no"
    [root@lb-01 ~]# sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/sysconfig/selinux 
    [root@lb-01 ~]# ansible all -m shell -a "setenforce 0" 
    [root@lb-01 ~]# ansible all -m copy -a "src=/etc/sysconfig/selinux dest=/etc/sysconfig/selinux"

## 3.发送index.html首页到client ##

[root@lb-01 test]# cat httpd.index.html 
    {
       {ansible_default_ipv4.address}} ###调用IP，这里取出来的是client两个虚拟机的IP
    
    [root@lb-01 test]# cat http.yml 
    ---
    -  hosts: client
       tasks:
         - name: scp index.html
           template: src=/test/httpd.index.html dest=/var/www/html/index.html
    [root@lb-01 test]# ansible-playbook http.yml 
    查看效果
    [root@lb-01 test]# ansible client -m shell -a "cat /var/www/html/index.html"
    10.0.0.12 | SUCCESS | rc=0 >>
    10.0.0.12 #/var/www/html/index.html 文件里的内容
    
    10.0.0.13 | SUCCESS | rc=0 >>
    10.0.0.13 #/var/www/html/index.html 文件里的内容
    [root@lb-01 test]# curl 10.0.0.12
    10.0.0.12
    [root@lb-01 test]# curl 10.0.0.13
    10.0.0.13

# 三、安装nginx #

## 1.上传nginx镜像到lb两台虚拟机 ##

[root@lb01 ~]# ansible lb -m shell -a "ls -lh /root/nginx-1.6.2.tar.gz"
    10.0.0.11 | SUCCESS | rc=0 >>
    -rw-r--r-- 1 root root 786K Aug 12 15:17 /root/nginx-1.6.2.tar.gz
    
    10.0.0.10 | SUCCESS | rc=0 >>
    -rw-r--r-- 1 root root 786K Mar 24  2015 /root/nginx-1.6.2.tar.gz

## 2.安装依赖 ##

[root@lb01 test]# ansible lb -m yum -a "name=gcc state=present"
    [root@lb01 test]# ansible lb -m yum -a "name=pcre-devel state=present"
    [root@lb01 test]# ansible lb -m yum -a "name=openssl-devel state=present"

## 3.解压编译安装 ##

[root@lb01 test]# cat nginx.yml                 
    --- - hosts: lb###指定模块，这个模块包含了lb两台虚拟机   tasks:
      - name: add user ###添加nginx用户     user: name=nginx group=nginx createhome=no shell=/sbin/nologin
      - name: tar nginx ###解压nginx     unarchive: src=/root/nginx-1.6.2.tar.gz dest=/root
      - name: make install###编译安装     shell: chdir=/root/nginx-1.6.2  ./configure --user=nginx \
        --group=nginx --prefix=/usr/local/nginx-1.6.2 \     --with-http_stub_status_module --with-http_ssl_module \     && make && make install
    ===>注：ansible-plabook里不能有斜线 需要删掉 [root@lb01 test]# ansible-playbook nginx.yml

## 4.创建目录与软链接 ##

[root@lb01 ~]# ansible lb -m file -a "path=/application state=directory"
    [root@lb01 ~]# ansible lb -m shell -a "ln -s /usr/local/nginx-1.6.2 /application/"

## 5.设置环境变量，启动nginx ##

[root@lb01 ~]# ansible lb -m shell -a "cp /application/nginx-1.6.2/sbin/nginx /usr/local/sbin/“
    [root@lb01 ~]# ansible lb -m shell -a "nginx"
    [root@lb01 ~]# ansible lb -m shell -a "netstat -lntup|grep nginx"
    10.0.0.11 | SUCCESS | rc=0 >>
    tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      8570/nginx          
    
    10.0.0.10 | SUCCESS | rc=0 >>
    tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      14554/nginx