LVS+Keepalive高可用集羣安裝與配置

時間 2020-07-14

標籤 lvs+keepalive lvs keepalive 可用集羣安裝配置欄目負載均衡简体版

原文原文鏈接

環境準備

安裝環境：

LVS版本：LVS-1.4.21
keepalived版本：keepalived v1.3.5
LVS:172.24.77.241（master）
LVS:172.24.77.242（backup）
VIP地址:172.24.77.246

LVS安裝:master和backup服務器安裝LVS

先檢查/usr/src/kernels目錄下是否有文件，沒有則須要安裝kernelslinux

ll /usr/src/kernelsvim
安裝Kernels後端

yum -y install kernel-devel服務器
安裝軟連接檢查內核版本ide

ln -s /usr/src/kernels/3.10.0-957.27.2.el7.x86_64/ /usr/src/linuxoop
檢查內核模塊，看一下ip_vs 是否被加載測試

lsmod |grep ip_vs插件

!若是沒有則運行如下命令code

modprobe ip_vsrouter
安裝依賴插件

yum install libnl libpopt -y

yum install popt-static -y
安裝ipvsadm

cd /usr/src

wget -c http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.26.tar.gz

tar -xzvf ipvsadm-1.26.tar.gz

cd ipvsadm-1.26

make

make install
檢查安裝是否成功

whereis ipvsadm
ipvsadm配置：添加虛擬服務器IP，添加readlserver後端服務

ipvsadm -A -t 172.24.77.246:80 -s rr

ipvsadm -a -t 172.24.77.246:80 -r 172.24.77.241 -g -w2

ipvsadm -a -t 172.24.77.246:80 -r 172.24.77.242 -g -w2
查看LVS ipvsadm配置參數

ipvsadm -Ln
LVS服務器綁定VIP地址

ifconfig lo:0 172.24.77.246 netmask 255.255.255.0
查看地址是否添加成功

ip addr |grep 246

Keepalive安裝:master和backup服務器安裝Keepalive
安裝keepalive

yum install keepalived -y
查看安裝版本信息

rpm -qi keepalived
配置Keepalived，master配置以下

vim /etc/keepalived/keepalived.conf

！刪除多餘配置

:35,156d

！修改成如下內容

! Configuration File for keepalived

global_defs {
notification_email {br/>root@locahost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id ha1.jay.com
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
vrrp_mcast_group4 224.0.0.18
}

vrrp_instance VI_1 {
state MASTER
interface ens33
virtual_router_id 80
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass silence2t
}virtual_ipaddress {
172.24.77.246 dev ens33 lable ens33:0
}

vrrp_script chk_LVS{

script "/data/sh/check_LVS.sh"

interval 2

weight 2

}

virtual_server 172.24.77.246 80 {

delay_loop 6

lb_algo wrt

lb_kind DR

persistence_timeout 60

protocol TCP
```
read_server 172.24.77.241 80 {

weight 100

TCP_CHECK {

connect_timeout 10

nb_get_retry 3

delay_before_retry 3

connect_port 80

}
```
}
```
read_server 172.24.77.242 80 {

weight 100

TCP_CHECK {

connect_timeout 10

nb_get_retry 3

delay_before_retry 3

connect_port 80
```
}

}
配置Keepalived，backup配置以下

vim /etc/keepalived/keepalived.conf

！刪除全部配置

:%d

！粘貼如下內容

! Configuration File for keepalived

global_defs {
notification_email {br/>root@locahost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id ha1.jay.com
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
vrrp_mcast_group4 224.0.0.18
}

vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 80
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass silence2t
}virtual_ipaddress {
172.24.77.246 dev ens33 lable ens33:0
}

vrrp_script chk_LVS{

script "/data/sh/check_LVS.sh"

interval 2

weight 2

}

virtual_server 10.206.35.253 80 {

delay_loop 6

lb_algo wrt

lb_kind DR

persistence_timeout 60

protocol TCP
```
read_server 172.24.77.241 80 {

weight 100

TCP_CHECK {

connect_timeout 10

nb_get_retry 3

delay_before_retry 3

connect_port 80

}
```
}
```
read_server 172.24.77.242 80 {

weight 100

TCP_CHECK {

connect_timeout 10

nb_get_retry 3

delay_before_retry 3

connect_port 80
```
}

}
查看VIP地址

ip addr
查看Iptalbes策略並刪除

iptables -vnL --line-number

iptables -D INPUT 1
測試訪問VIP

ping 172.24.77.246
測試keepalive高可用
check_LVS.sh腳本內容以下：

！將佔有VIP地址的主機關機，查看

systemctl stop keepalived

killall keepalived