Build K8s

ShellScript to build HA-PROXY and Kubernetes

Description.

This is a shell script to build a master and sub environment for kubernetes, using CRI-O and Calico. You can switch between clustered and non-clustered configurations with command line options. It is recommended that you also run the HA-PROXY build Shell if you are using a clustered configuration.
As a bonus, we have also prepared a shell script that can build GlusterFS on a HAProxy server in a two-unit configuration.

Operating environment

Ubuntu 20.04.3 LTS

How to use

$ git clone https://github.com/Otazoman/BuildK8s.git
$ cd BuildK8s

Common setting

HA-PROXY

$ sudo . /previous_setting.sh 192.168.0.11 192.168.0.1 lb1srv yourdomain on
$ sudo . /previous_setting.sh 192.168.0.12 192.168.0.1 lb2srv yourdomain on

Kubernetes

$ sudo . /previous_setting.sh 192.168.0.21 192.168.0.1 kube1srv yourdomain off
$ sudo . /previous_setting.sh 192.168.0.22 192.168.0.1 kube2srv yourdomain off
$ sudo . /previous_setting.sh 192.168.0.23 192.168.0.1 kube3srv yourdomain off

Build HA-Proxy(After executing the common shell script)

Main

$ sudo ./vrrp_haproxy.sh \
100 \
150 \
password \
lb1srv \
lb2srv \
192.168.0.11 \
192.168.0.12 \
halbsrv \
192.168.0.10 \
kube1srv \
kube2srv \
kube3srv \
yourdomain \
192.168.0.21 \
192.168.0.22 \
192.168.0.23

Sub

$ sudo ./vrrp_haproxy.sh \
100 \
100 \
password \
lb1srv \
lb2srv \
192.168.0.11 \
192.168.0.12 \
halbsrv \
192.168.0.10 \
kube1srv \
kube2srv \
kube3srv \
yourdomain \
192.168.0.21 \
192.168.0.22 \
192.168.0.23

Build Kubernetes(After executing the common shell script)

Cluster master

$ sudo ./kurbenetes_setting.sh \
cluster \
192.168.0.10 \
halbsrv \
kube1srv \
kube2srv \
kube3srv \
yourdomain \
192.168.0.21 \
192.168.0.22 \
192.168.0.23

Non cluster master

$ sudo ./kurbenetes_setting.sh \
cluster \
192.168.0.10 \
halbsrv \
kube1srv \
kube2srv \
kube3srv \
yourdomain \
192.168.1.21 \
192.168.1.22 \
192.168.1.23

Sub node

$ sudo ./kurbenetes_setting.sh \
sub \
192.168.1.10 \
halbsrv \
kube1srv \
kube2srv \
kube3srv \
yourdomain \
192.168.1.21 \
192.168.1.22 \
192.168.1.23

Build GlusterFS Cluster (After executing the HAProxy or kubernetes shell)

Run from subnodes

$ ./glusterfs.sh \
secondary \
192.168.0.0/24 \
gfs \
bricks \
volume \
lb1srv \
lb2srv

After subnodes mainnode execute

$ ./glusterfs.sh
primary
192.168.0.0/24
gfs
bricks
volume
lb1srv
lb2srv

*Caution
In the case of subnodes, you need to submit the command after configuring the main machine (cri-socket option is required)
ex)
$ sudo kubeadm --cri-socket /var/run/crio/crio.sock join halbsrv:6443 --token hoge \
--discovery-token-ca-cert-hash sha256:fuga
--control-plane --certificate-key fuga
$ mkdir -p ${HOME}/.kube
$ sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
$ sudo chown $(id -u):$(id -g) $HOME/.kube/config