# keepalived

**Repository Path**: jolvmail/keepalived

## Basic Information

- **Project Name**: keepalived
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2018-02-10
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# keepalived 经验总结

1. 介绍
   Keeaplived 主要有两种应用场景:
```
      一个是通过配置keepalived结合ipvs做到负载均衡（LVS+Keepalived）。
      另一个是通过自身健康检查、资源接管功能做高可用（双机热备），实现故障转移。本次主要讲解的是双机热备这块知识点。
 ```      

2. keepalived详细安装教程

``
      keepalive详细安装方法见文件【keepalived详细安装教程.pdf】
``

3. 如何邮件通知

```
      1、安装sendmail：yum install sendmail
      
      2、安装mailx:    yum install mailx
      
      3、检查：        输入mail命令后提示没找到或该命令不存在，需要安装mailx
      
      4、测试发送邮件：mail -s 'Test mail' jolvmail@163.com < /etc/passwd
      
      5、编辑发送邮件脚本 master.sh
         #! /bin/sh
         mail -s 'master notify mail for keepalived' jolvmail@163.com < /etc/passwd
  
      6、编辑keepalived配置脚本
      
         global_defs {
            router_id edu-proxy-02
         }
         vrrp_script chk_nginx {
            script "/etc/keepalived/nginx_check.sh"
            interval 2
            weight -20
         }
         vrrp_instance VI_1 {
            state BACKUP
            interface eth0
            virtual_router_id 60
            mcast_src_ip 192.168.1.110
            priority 90
            advert_int 1
            authentication {
            auth_type PASS
            auth_pass 1111
         }
         track_script {
            chk_nginx
         }
         virtual_ipaddress {
            192.168.1.160
         }
         notify_master "/etc/keepalived/master.sh"
         notify_backup "/etc/keepalived/backup.sh"
         notify_fault "/etc/keepalived/fault.sh"
        }
       ```` 
      
3. Process [8057] didn't respond to SIGTERM

```
      这种问题check_nginx.sh，或者其他执行脚本出现问题，大家注意一下。
```

4. 关闭防火墙
   如果在你的虚拟IP无法自动切换和访问的时候，你要关闭防火墙。
   ```
      centos7关闭防火墙    systemctl stop firewalld.service
      centos7禁止开机启动  systemctl disable firewalld.service
    ```
    
5. 配置keepalived日志文件
```
   keeplived也是把默认的日志写在messages，这很鼓励人啊，不过还是有办法解决
      1、修改主从节点日志配置文件： [root@localhost ~]#vi /etc/rsyslog.conf
      2、加入配置
         keepalived -S 0
         local0.* /var/log/keepalived.log
      3、重启服务：systemctl start keepalived.service
      ```