腾讯云部署keepalived高可用

使用背景：

• 通过调用python SDK在腾讯云手动部署keepalived高可用

部署环境

系统：centos7.3

Master：192.168.0.100

Slave：192.168.0.14

VIP：192.168.0.76

=================================================================

master和slave上部署python命令行环境

yum -y install python python-pip
pip install qcloudcli

安装命令行自动补齐

complete  -C '/usr/bin/qcloud_completer' qcloudcli

自动补齐永久生效vi ~/.bash_profile 添加上述命令到最后一行

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
	. ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH
complete -C '/usr/bin/qcloud_completer' qcloudcli

=========================================================================================================================

安装keepalived

yum -y install keepalived

进入到keepalived目录并下载python-sdk

cd /etc/keepalived/
wget https://mc.qcloudimg.com/static/archive/b61ee1ce734e7437530304152c20ee14/qcloudapi-sdk-python-master.zip
unzip qcloudapi-sdk-python-master.zip

　　

调用python-sdk申请VIP vim setup.py，注：master上执行即可   secretID和secretkey需要在云AIP密钥中申请，执行./setup.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
from src.QcloudApi.qcloudapi import QcloudApi
module = 'vpc'
action = 'AssignPrivateIpAddresses'
config = {
'Region': 'gz',
'secretId': '您的secretId',
'secretKey': '您的secretKey',
'method': 'post'
}
params = {
'vpcId': 'vpc-53nh7c3p',
'networkInterfaceId': 'eni-431tr0x5',
'secondaryPrivateIpAddressCount': '1'
}
try:
service = QcloudApi(module, config)
print service.generateUrl(action, params)
print service.call(action, params)
except Exception, e:
print 'exception:', e

　　

创建vip漂移脚本master：vi vip.py（backup只需要调换oldnetworkinterfaceID和newnetworkinterfaceID调换即可）

#!/usr/bin/python
# -*- coding: utf-8 -*-

from QcloudApi.qcloudapi import QcloudApi 

#SDK源码直接使用方式使用
#from src.QcloudApi.qcloudapi import QcloudApi


module = 'vpc'
action = 'MigratePrivateIpAddress'
config = {
    'Region': 'gz',
    'secretId': '####',
    'secretKey': '####',
    'method': 'post'
}
params = {
    'vpcId': 'vpc-53nh7c3p',
    'privateIpAddress': '192.168.0.76',
    'oldNetworkInterfaceId': 'backup网卡ID',
    'newNetworkInterfaceId': 'master网卡ID'
}

try:
    service = QcloudApi(module, config)
    print service.generateUrl(action, params)
    print service.call(action, params)
except Exception, e:
    print 'exception:', e

配置keepalived.conf文件vi keepalived.conf (master)

! Configuration File for keepalived
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_sync_group G1 {
    group {
        VI_1
    }
    notify_master "/etc/keepalived/vip.py"
}
vrrp_instance VI_1 {
    #注意主备参数选择
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    unicast_peer {
        192.168.0.14    #对端设备的IP地址，例如：10.0.0.1
    }
    virtual_ipaddress {
        192.168.0.76  #第一步申请的 VIP
    }
    nopreempt
    garp_master_delay 1
    garp_master_refresh 5
}

　　配置keepalived.conf文件vi keepalived.conf (backup)

! Configuration File for keepalived
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_sync_group G1 {
    group {
        VI_1
    }
    notify_master "/etc/keepalived/vip.py"
}
vrrp_instance VI_1 {
    #注意主备参数选择
    state BACKUP
    interface eth0
    virtual_router_id 51     ###主从必须一致
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    unicast_peer {         ##keepalived单播模式
        192.168.0.100    #对端设备的IP地址，例如：10.0.0.1
    }
    virtual_ipaddress {
        192.168.0.76  #第一步申请的 VIP
    }
    nopreempt
    garp_master_delay 1
    garp_master_refresh 5
    

主从上启动keepalived服务

systemctl start keepalived.service

测试：

关闭master上的keepalived服务，查看VIP是否自动漂移到backup上

测试正常