nginx keepalived搭建

要搭建nginx和keepalived，可以按照以下步骤进行操作：

1. 首先，安装nginx。在主服务器和备份服务器上都需要安装nginx。可以通过YUM安装或者手动编译安装。如果选择手动编译安装，可以按照以下步骤进行操作：
- 下载nginx安装包并解压缩：

     cd /tools/
     ls nginx-1.12.0.tar.gz
     tar -zxf nginxnx-1.12.0.tar.gz
     cd nginxnx-1.12.0

- 配置并安装nginx：

     ./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_stub_status_module --with-http_ssl_module
     make && make install

- 添加nginx用户并启动nginx：

     useradd www
     /usr/local/nginx/sbin/nginx

2. 接下来，安装keepalived。keepalived用于实现高可用性，将主服务器和备份服务器配置为虚拟IP地址。可以通过以下步骤安装keepalived：
- 创建check_nginx.sh脚本并设置执行权限：

     #!/bin/bash
     counter=$(ps -C nginx --no-heading|wc -l)
     if [ "${counter}" = "0" ]; then
     /usr/local/nginx/sbin/nginx
     sleep 2
     counter=$(ps -C nginx --no-heading|wc -l)
     if [ "${counter}" = "0" ]; then
     systemctl stop keepalived
     fi
     fi

- 配置keepalived的主服务器（192.168.92.100）上的配置文件：

     Configuration File for keepalived

     global_defs {
       router_id Nginx_01
     }

     vrrp_script check_nginx {
       script "/etc/keepalived/check_nginx.sh"
       interval 2
       weight -5
       fall 3
       rise 2
     }

     vrrp_instance VI_1 {
       state MASTER
       interface ens33
       virtual_router_id 51
       priority 150
       advert_int 1
       authentication {
         auth_type PASS
         auth_pass 1111
       }
       virtual_ipaddress {
         192.168.92.200
       }
       track_script {
         check_nginx
       }
     }

- 在备份服务器上配置keepalived的配置文件，与主服务器配置文件相似，只需将state设置为BACKUP。
- 启动keepalived服务：`systemctl start keepalived`

通过以上步骤，您可以搭建nginx和keepalived来实现高可用性，当nginx服务出现故障时，keepalived会将虚拟IP地址迁移到备份服务器上，确保服务的持续可用性。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [搭建keepalived+nginx热备高可用(主备+双主模式)](https://blog.csdn.net/qq_38055805/article/details/127916599)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *2* [Keepalived+Nginx搭建](https://blog.csdn.net/qq_44777969/article/details/107436999)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]