kubernetes部署haproxy、keepalived为kube-apiserver做集群
2024-09-06 15:49:37
也可以用nginx、keepalived做负载均衡，看大家的需求。
# yum -y install haproxy keepalived
haproxy的配置文件（三台一样）：
cat > /etc/haproxy/haproxy.cfg <<EOF
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats socket /var/run/haproxy-admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
nbproc 1 defaults
log global
timeout connect 5000
timeout client 10m
timeout server 10m listen admin_stats
bind 0.0.0.0:10080
mode http
log 127.0.0.1 local0 err
stats refresh 30s
stats uri /status
stats realm welcome login\ Haproxy
stats auth admin:123456
stats hide-version
stats admin if TRUE listen kube-master
bind 0.0.0.0:8443
mode tcp
option tcplog
balance source
server 192.168.111.10 192.168.111.10:6443 check inter 2000 fall 2 rise 2 weight 1
server 192.168.111.11 192.168.111.11:6443 check inter 2000 fall 2 rise 2 weight 1
server 192.168.111.12 192.168.111.12:6443 check inter 2000 fall 2 rise 2 weight 1
EOF
启动haproxy：
# for SERVICES in haproxy;do systemctl enable $SERVICES; systemctl restart $SERVICES; systemctl status $SERVICES; done
keepalived配置文件（1主）：
cat > /etc/keepalived/keepalived.conf <<EOF
global_defs {
router_id lb-master-105
} vrrp_script check-haproxy {
script "killall -0 haproxy"
interval 5
weight -30
} vrrp_instance VI-kube-master {
state MASTER
priority 120
dont_track_primary
interface ens33
virtual_router_id 68
advert_int 3
track_script {
check-haproxy
}
virtual_ipaddress {
192.168.111.9
}
}
EOF
keepalived配置文件（2备）：
cat > /etc/keepalived/keepalived.conf <<EOF
global_defs {
router_id lb-backup-105
} vrrp_script check-haproxy {
script "killall -0 haproxy"
interval 5
weight -30
} vrrp_instance VI-kube-master {
state BACKUP
priority 110
dont_track_primary
interface ens33
virtual_router_id 68
advert_int 3
track_script {
check-haproxy
}
virtual_ipaddress {
192.168.111.9
}
}
EOF
启动keepalived：
for SERVICES in keepalived;do systemctl enable $SERVICES; systemctl restart $SERVICES; systemctl status $SERVICES; done
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