From 18a2935104f546e98f1c438f5d9ff10d468b9bcb Mon Sep 17 00:00:00 2001
From: Sambo Chea <sombochea@cubetiqs.com>
Date: Tue, 12 Oct 2021 20:25:26 +0700
Subject: [PATCH] Add lb k8s ha guide and fixed install script

---
 LB-K8S-HA.md                   | 108 +++++++++++++++++++++++++++++++++
 README.md                      |   2 +-
 kube-cluster-worker-install.sh |   3 +-
 3 files changed, 110 insertions(+), 3 deletions(-)
 create mode 100644 LB-K8S-HA.md

diff --git a/LB-K8S-HA.md b/LB-K8S-HA.md
new file mode 100644
index 0000000..0ec3e22
--- /dev/null
+++ b/LB-K8S-HA.md
@@ -0,0 +1,108 @@
+# Setup and Configuration k8s multiple master (HA)
+
+- Keepalived
+- HAProxy
+- Kubernetes
+
+### Keepalived
+
+- Install and start service
+
+```shell
+sudo apt-get install keepalived -y
+sudo systemctl enable keepalived
+sudo systemctl start keepalived
+```
+
+- Configuration for master nodes
+- k8s-master-1 `/etc/keepalived/keepalived.conf`
+
+```config
+global_defs {
+   notification_email {
+     sysadmin@cubetiqhost.net
+     support@cubetiqhost.net
+   }
+   notification_email_from k8s-master-1@cubetiqhost.net
+   smtp_server localhost
+   smtp_connect_timeout 30
+}
+
+vrrp_instance VI_1 {
+    state MASTER
+    interface ens18
+    virtual_router_id 101
+    priority 101
+    advert_int 1
+    authentication {
+        auth_type PASS
+        auth_pass 1111
+    }
+    virtual_ipaddress {
+        192.168.0.10
+    }
+}
+```
+
+- k8s-master-2 (BACKUP) `/etc/keepalived/keepalived.conf`
+
+```config
+global_defs {
+   notification_email {
+     sysadmin@cubetiqhost.net
+     support@cubetiqhost.net
+   }
+   notification_email_from k8s-master-2@cubetiqhost.net
+   smtp_server localhost
+   smtp_connect_timeout 30
+}
+
+vrrp_instance VI_1 {
+    state BACKUP
+    interface ens18
+    virtual_router_id 101
+    priority 100
+    advert_int 1
+    authentication {
+        auth_type PASS
+        auth_pass 1111
+    }
+    virtual_ipaddress {
+        192.168.0.10
+    }
+}
+```
+
+- k8s-master-3 (BACKUP) `/etc/keepalived/keepalived.conf`
+
+```config
+global_defs {
+   notification_email {
+     sysadmin@cubetiqhost.net
+     support@cubetiqhost.net
+   }
+   notification_email_from k8s-master-3@cubetiqhost.net
+   smtp_server localhost
+   smtp_connect_timeout 30
+}
+
+vrrp_instance VI_1 {
+    state BACKUP
+    interface ens18
+    virtual_router_id 101
+    priority 100
+    advert_int 1
+    authentication {
+        auth_type PASS
+        auth_pass 1111
+    }
+    virtual_ipaddress {
+        192.168.0.10
+    }
+}
+```
+
+- Restart all nodes for keepalived service
+```shell
+sudo systemctl restart keepalived
+```
\ No newline at end of file
diff --git a/README.md b/README.md
index 38b479b..f86feac 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 #### Quick install for kubernetes cluster for worker node
 ```shell
-curl -s -L https://raw.githubusercontent.com/sombochea/kubernetes-installation/main/kube-cluster-worker-install.sh?v=182012102021 | bash
+curl -s -L https://raw.githubusercontent.com/sombochea/kubernetes-installation/main/kube-cluster-worker-install.sh?v=121020215 | bash
 ```
 
 ### 1. Download kubectl
diff --git a/kube-cluster-worker-install.sh b/kube-cluster-worker-install.sh
index bd646e8..0199894 100755
--- a/kube-cluster-worker-install.sh
+++ b/kube-cluster-worker-install.sh
@@ -62,8 +62,7 @@ kubeadm version
 
 echo "Downloading and setup docker, containerd and tools..."
 sudo swapoff -a
-wget https://sh.osa.cubetiqs.com/docker-setup.sh
-bash docker-setup.sh
+curl -s -L https://sh.osa.cubetiqs.com/docker-setup.sh | bash
 sudo systemctl start docker
 sudo systemctl enable docker