Kubernetes部署（五）：Haproxy、Keppalived部署
Kubernetes部署（五）：Haproxy、Keppalived部署
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Kubernetes部署（一）：架构及功能说明
部署haproxy
1. 安装haproxy
[root@node-01 ~]# yum install haproxy -y
2. 配置内核转发
基于NAT模式的负载均衡器都需要打开系统转发功能
[root@node-01 ~]# cat >>/etc/sysctl.conf<<EOF net.ipv4.ip_forward = 1 net.ipv4.ip_nonlocal_bind = 1 EOF [root@node-01 ~]# sysctl -p
3. 日志配置
编辑/etc/rsyslog.conf增加如下配置
cat >>/etc/rsyslog.conf <<EOF #Haproxy local0.* /var/log/haproxy.log EOF
vim /etc/rsyslog.conf +15 #取消配置文件注释 $ModLoad imudp $UDPServerRun 514
编辑/etc/sysconfig/rsyslog
[root@node-01 ~]# tail -1 /etc/sysconfig/rsyslog SYSLOGD_OPTIONS="-c 2 -m 0 -r -x" #重启rsyslog服务 systemctl restart rsyslog
在node-01和node-02执行相同操作，注意修改部分配置的ip地址
4. haproxy配置
node-01配置和node-2配置一样
[root@node-01 ~]# vim /etc/haproxy/haproxy.cfg global chroot /var/lib/haproxy daemon group haproxy user haproxy log 127.0.0.1:514 local0 warning pidfile /var/lib/haproxy.pid maxconn 20000 spread-checks 3 nbproc 8 defaults log global mode tcp retries 3 option redispatch listen https-apiserver bind 10.31.90.200:6443 mode tcp balance roundrobin timeout server 15s timeout connect 15s server apiserver01 10.31.90.201:6443 check port 6443 inter 5000 fall 5 server apiserver02 10.31.90.202:6443 check port 6443 inter 5000 fall 5 server apiserver03 10.31.90.203:6443 check port 6443 inter 5000 fall 5 listen http-apiserver bind 10.31.90.200:8080 mode tcp balance roundrobin timeout server 15s timeout connect 15s server apiserver01 10.31.90.201:8080 check port 8080 inter 5000 fall 5 server apiserver02 10.31.90.202:8080 check port 8080 inter 5000 fall 5 server apiserver03 10.31.90.203:8080 check port 8080 inter 5000 fall 5
5. 启动服务
[root@node-01 ~]# systemctl start haproxy.service [root@node-01 ~]# systemctl status haproxy.service
部署Keepalived
1. 安装keepalived
[root@node-01 k8s]# tar zxf keepalived-2.0.10.tar.gz [root@node-01 k8s]# cd keepalived-2.0.10/ [root@node-01 keepalived-2.0.10]# ./configure [root@node-01 keepalived-2.0.10]# make -j2 && make install [root@node-01 keepalived-2.0.10]#mkdir /etc/keepalived [root@node-01 keepalived-2.0.10]# cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/ [root@node-01 keepalived-2.0.10]# cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
2. 日志配置
修改/etc/sysconfig/keepalived
[root@node-01 keepalived-2.0.10]# vim /etc/sysconfig/keepalived KEEPALIVED_OPTIONS="-D -d -S 1"
cat >>/etc/rsyslog.conf <<EOF #keepalived local1.* /var/log/keepalived.log EOF
#重启rsyslog服务 systemctl restart rsyslog
3. keepalived配置文件
node-01配置文件
[root@node-01 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
feng110498@163.com
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_1
}
vrrp_instance VI_1 {
state MASTER
interface eth0
lvs_sync_daemon_inteface eth0Virtual_router_id 50
advert_int 1
priority 100
authentication {
auth_type PASS
auth_pass 1111
}Virtual_ipaddress {
10.31.90.200/24
}
}
node-02配置文件
[root@node-02 keepalived-2.0.10]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
feng110498@163.com
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_2
}
vrrp_instance VI_1 {
state MASTER
interface eth0
lvs_sync_daemon_inteface eth0Virtual_router_id 50
advert_int 1
priority 90
authentication {
auth_type PASS
auth_pass 1111
}Virtual_ipaddress {
10.31.90.200/24
}
}
至此haproxy和keepalived部署完成，可以停止其中一台的keepalived服务器，用ip add show eth0查看VIP的漂浮状态，如果能正常转移就成功了。
#node-01 [root@node-01 ~]# ip add show eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:50:56:82:64:70 brd ff:ff:ff:ff:ff:ff inet 10.31.90.201/24 brd 10.31.90.255 scope global noprefixroute eth0 valid_lft forever preferred_lft forever inet 10.31.90.200/24 scope global secondary eth0 valid_lft forever preferred_lft forever inet6 fe80::250:56ff:fe82:6470/64 scope link noprefixroute valid_lft forever preferred_lft forever
#node-02 [root@node-02 ~]# ip add show eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:50:56:82:dd:7d brd ff:ff:ff:ff:ff:ff inet 10.31.90.202/24 brd 10.31.90.255 scope global noprefixroute eth0 valid_lft forever preferred_lft forever inet6 fe80::250:56ff:fe82:dd7d/64 scope link noprefixroute valid_lft forever preferred_lft forever
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