keepalived中notify_backup
时间: 2024-08-14 15:01:57 浏览: 95
在Keepalived高可用软件中,`notify_backup`是一个配置选项,用于设置主备节点之间的状态通知策略。当主节点发生故障或切换到备份模式时,`notify_backup`功能会让主节点主动告知备份节点。这通常通过发送特定的网络消息或者修改某个共享文件系统的方式来实现。
例如,你可以选择配置成SMTP邮件通知,让主节点在切换后发送邮件给管理员;也可以是TCP/IP通知,主节点会连接到备份节点并发送特定的消息;或者使用文件系统事件(如修改特定文件、创建链接等),让备份节点监控文件的变化来识别状态变化。
启用`notify_backup`可以帮助管理员及时了解系统的运行状况,便于快速做出响应。然而,在配置时需要谨慎考虑网络延迟、安全性和通知的可靠性等因素。
相关问题
keepalived脚本
在keepalived脚本中,降级操作是通过监控脚本来实现的。在slave节点上的监控脚本notify.sh中,当状态变为backup时,会停止httpd服务。而在master节点上的监控脚本check_n.sh中,如果httpd服务停止运行,则会停止keepalived服务。这样,在发生降级时,即master节点的httpd服务停止时,keepalived服务也会被停止。这样就实现了降级操作。<span class="em">1</span><span class="em">2</span><span class="em">3</span><span class="em">4</span>
keepalived配置ipv6
Sure, I can assist you with configuring Keepalived for IPv6. Here's an example configuration for Keepalived using IPv6 addresses:
1. Install Keepalived:
```
sudo apt-get install keepalived
```
2. Create a Keepalived configuration file, such as `/etc/keepalived/keepalived.conf`, and add the following content:
```ini
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_heartbeat {
script "/etc/keepalived/heartbeat.sh"
interval 2
weight -20
fall 3
rise 2
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 101
advert_int 1
authentication {
auth_type PASS
auth_pass YourPassword
}
virtual_ipaddress {
::1/64 dev eth0
}
track_interface {
eth0
}
notify /etc/keepalived/notify.sh
}
```
3. Configure the `chk_heartbeat` script (`/etc/keepalived/heartbeat.sh`) to monitor the health of the virtual IP:
```shell
#!/bin/bash
if ! ip addr show dev eth0 | grep -q "::1"; then
exit 1
fi
exit 0
```
4. Configure the `notify` script (`/etc/keepalived/notify.sh`) to handle failover events (optional):
```shell
#!/bin/bash
if [ "$1" = "MASTER" ]; then
# Add your custom actions for becoming the master node here
echo "Became MASTER" >> /var/log/keepalived.log
elif [ "$1" = "BACKUP" ]; then
# Add your custom actions for becoming the backup node here
echo "Became BACKUP" >> /var/log/keepalived.log
elif [ "$1" = "FAULT" ]; then
# Add your custom actions for handling faults here
echo "FAULT" >> /var/log/keepalived.log
fi
```
5. Make the scripts executable:
```shell
sudo chmod +x /etc/keepalived/heartbeat.sh
sudo chmod +x /etc/keepalived/notify.sh
```
6. Start Keepalived:
```shell
sudo systemctl start keepalived
```
This configuration sets up Keepalived in master mode (`state MASTER`) with a virtual IPv6 address (::1/64) on the `eth0` interface. Remember to replace `YourPassword` with your desired authentication password.
Note: This configuration example assumes you have the `eth0` interface configured with an appropriate IPv6 address range. Adjust the configuration based on your network setup.
Let me know if you need further assistance!
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