Updated HA LB guide for HAProxy setup

This commit is contained in:
Sambo Chea 2021-10-12 21:02:04 +07:00
parent 18a2935104
commit f2f37a7eed
Signed by: sombochea
GPG Key ID: 3C7CF22A05D95490

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@ -9,7 +9,7 @@
- Install and start service
```shell
sudo apt-get install keepalived -y
sudo apt-get install haproxy keepalived psmisc -y
sudo systemctl enable keepalived
sudo systemctl start keepalived
```
@ -106,3 +106,49 @@ vrrp_instance VI_1 {
```shell
sudo systemctl restart keepalived
```
- Edit HAProxy config (for all nodes)
```shell
sudo nano /etc/haproxy/haproxy.cfg
```
```text
frontend kubernetes
bind 192.168.0.10:6443
option tcplog
mode tcp
default_backend kubernetes-master-nodes
backend kubernetes-master-nodes
mode tcp
balance roundrobin
option tcp-check
server k8s-master-1 192.168.0.11:6443 check fall 3 rise 2
server k8s-master-2 192.168.0.12:6443 check fall 3 rise 2
server k8s-master-3 192.168.0.13:6443 check fall 3 rise 2
listen stats
bind 192.168.0.10:8080 name hastats
mode http
stats enable
stats uri /
stats realm HAProxy\ Statistics
stats auth admin:haproxy
```
- Enable HAProxy service
```shell
sudo systemctl enable --now haproxy
```
- Allow for No Local Bind IP Address (Ignore error in HAProxy)
```shell
echo "net.ipv4.ip_nonlocal_bind=1" | sudo tee /etc/sysctl.d/ip_nonlocal_bind.conf
sudo sysctl --system
```
- Restart HAProxy for configuration
```shell
sudo systemctl restart haproxy.service
```