119 lines
3.1 KiB
Markdown
119 lines
3.1 KiB
Markdown
## 环境简介
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| hostname | ip | mark |
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| --- | --- | --- |
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| lvs-1 | 192.168.30.13 | 主lvs |
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| lvs-2 | 192.168.30.14 | 备lvs |
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| k8s-master-1 | 192.168.30.6 | rs-1 |
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| k8s-master-2 | 192.168.30.7 | rs-2 |
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| k8s-master-3 | 192.168.30.12 | rs-3 |
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## 搭建主备LVS
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```plain
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apt install keepalived net-tools -y #安装keepalived 和 net-tools
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```
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配置keepalived 配置文件
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```plain
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global_defs {
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no_email_faults
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}
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# VRRP 实例配置
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vrrp_instance VI_1 {
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state MASTER #如果使用主/备,另外一台机器需要设置为BACKUP
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interface ens32 #检测网络端口
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virtual_router_id 100 #主备的虚拟机路由ID必须一致
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priority 100 #主备的优先级，主优先级要大于备
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advert_int 1 #VRRP Multicast广播周期秒数
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authentication {
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auth_type PASS # VRRP认证方式
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auth_pass zhanxiaoyao # VRRP口令字
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}
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virtual_ipaddress {
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192.168.30.200 # 如果有多个VIP，继续换行填写
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}
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}
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# 虚拟服务器配置
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virtual_server 192.168.30.200 6443 {
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delay_loop 1 # 每隔1秒查询realserver状态
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lb_algo wrr # lvs 算法
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lb_kind DR # Direct Route
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protocol TCP # 用TCP协议检查realserver状态
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persistence_timeout 300 # 会话保持时间，这段时间内，同一ip发起的请求将被转发到同一个realserver
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# 第一台realserver物理环境
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real_server 192.168.30.6 6443 {
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weight 1
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TCP_CHECK {
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connect_port 6443 #设置监控检查的端口
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connect_timeout 3 #设置连接超时时间
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nb_get_retry 3 #设置重连次数
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delay_before_retry 2 #设置重连间隔
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}
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}
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# 第二台realserver物理环境
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real_server 192.168.30.7 6443 {
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weight 1
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TCP_CHECK {
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connect_port 6443 #设置监控检查的端口
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connect_timeout 3 #设置连接超时时间
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nb_get_retry 3 #设置重连次数
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delay_before_retry 2 #设置重连间隔
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}
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}
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# 第三台realserver物理环境
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real_server 192.168.30.12 6443 {
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weight 1
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TCP_CHECK {
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connect_port 6443 #设置监控检查的端口
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connect_timeout 3 #设置连接超时时间
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nb_get_retry 3 #设置重连次数
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delay_before_retry 2 #设置重连间隔
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}
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}
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}
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```
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```plain
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systemctl enable keepalived
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systemctl start keepalived
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ipvsadm
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ip a
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```
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## 搭建rs
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```plain
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vim /etc/keepalived-rs.sh
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#!/bin/bash
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VIP=192.168.30.200
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echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
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echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
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echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
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echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
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/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
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/sbin/route add -host $VIP dev lo:0
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chmod 777 /etc/keepalived-rs.sh
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vim /lib/systemd/system/keepalived-lvs-rs.service
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[Unit]
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Description=My Script
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After=network.target
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[Service]
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ExecStart=/etc/keepalived-rs.sh
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[Install]
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WantedBy=default.target
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```
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```plain
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reboot
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```
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