#!/bin/sh
#****************************************************************#
# ScriptName: hakek8s.sh
# Author: xhy
# Create Date: 2020-06-08 20:00
# Modify Author: xhy
# Modify Date: 2021-02-25 11:24
# Version: v2
#***************************************************************#

#######################################
# set variables below to create the config files, all files will create at ./config directory
#######################################

# master keepalived virtual ip address
export K8SHA_VIP=172.16.10.254

# master01 ip address
export K8SHA_IP1=172.16.10.11

# master02 ip address
export K8SHA_IP2=172.16.10.12

# master03 ip address
export K8SHA_IP3=172.16.10.13

# master01 hostname
export K8SHA_HOST1=master01

# master02 hostname
export K8SHA_HOST2=master02

# master03 hostname
export K8SHA_HOST3=master03

# master01 network interface name
export K8SHA_NETINF1=eth0

# master02 network interface name
export K8SHA_NETINF2=eth0

# master03 network interface name
export K8SHA_NETINF3=eth0

# keepalived auth_pass config
export K8SHA_KEEPALIVED_AUTH=412f7dc3bfed32194d1600c483e10ad1d

# kubernetes CIDR pod subnet
export K8SHA_PODCIDR=10.10.0.0

# kubernetes CIDR svc subnet
export K8SHA_SVCCIDR=10.20.0.0

##############################
# please do not modify anything below
##############################

mkdir -p config/$K8SHA_HOST1/{keepalived,haproxy}
mkdir -p config/$K8SHA_HOST2/{keepalived,haproxy}
mkdir -p config/$K8SHA_HOST3/{keepalived,haproxy}
mkdir -p config/keepalived
mkdir -p config/haproxy
mkdir -p config/calico

# wget all files
wget -c -P config/keepalived/ http://down.linuxsb.com/keepalived/k8s-keepalived.conf.tpl
wget -c -P config/keepalived/ http://down.linuxsb.com/keepalived/check_apiserver.sh
wget -c -P config/haproxy/ http://down.linuxsb.com/haproxy/k8s-haproxy.cfg.tpl
wget -c -P config/haproxy/ http://down.linuxsb.com/haproxy/k8s-haproxy.service
wget -c -P config/calico/ http://down.linuxsb.com/calico/calico.yaml.tpl
wget -c -P config/ http://down.linuxsb.com/kubeadm/kubeadm-config.yaml.tpl
wget -c -P config/ http://down.linuxsb.com/kubeadm/downimage.sh
wget -c -P config/ http://down.linuxsb.com/kubeadm/loadimage.sh
wget -c -P config/ http://down.linuxsb.com/kubeadm/conloadimage.sh

# create all kubeadm-config.yaml files
sed \
-e "s/K8SHA_HOST1/${K8SHA_HOST1}/g" \
-e "s/K8SHA_HOST2/${K8SHA_HOST2}/g" \
-e "s/K8SHA_HOST3/${K8SHA_HOST3}/g" \
-e "s/K8SHA_IP1/${K8SHA_IP1}/g" \
-e "s/K8SHA_IP2/${K8SHA_IP2}/g" \
-e "s/K8SHA_IP3/${K8SHA_IP3}/g" \
-e "s/K8SHA_VIP/${K8SHA_VIP}/g" \
-e "s/K8SHA_PODCIDR/${K8SHA_PODCIDR}/g" \
-e "s/K8SHA_SVCCIDR/${K8SHA_SVCCIDR}/g" \
config/kubeadm-config.yaml.tpl > kubeadm-config.yaml

echo "create kubeadm-config.yaml files success. kubeadm-config.yaml"

# create all keepalived files
chmod u+x config/keepalived/check_apiserver.sh
cp config/keepalived/check_apiserver.sh config/$K8SHA_HOST1/keepalived
cp config/keepalived/check_apiserver.sh config/$K8SHA_HOST2/keepalived
cp config/keepalived/check_apiserver.sh config/$K8SHA_HOST3/keepalived

sed \
-e "s/K8SHA_KA_STATE/BACKUP/g" \
-e "s/K8SHA_KA_INTF/${K8SHA_NETINF1}/g" \
-e "s/K8SHA_IPLOCAL/${K8SHA_IP1}/g" \
-e "s/K8SHA_KA_PRIO/102/g" \
-e "s/K8SHA_VIP/${K8SHA_VIP}/g" \
-e "s/K8SHA_KA_AUTH/${K8SHA_KEEPALIVED_AUTH}/g" \
config/keepalived/k8s-keepalived.conf.tpl > config/$K8SHA_HOST1/keepalived/keepalived.conf

sed \
-e "s/K8SHA_KA_STATE/BACKUP/g" \
-e "s/K8SHA_KA_INTF/${K8SHA_NETINF2}/g" \
-e "s/K8SHA_IPLOCAL/${K8SHA_IP2}/g" \
-e "s/K8SHA_KA_PRIO/101/g" \
-e "s/K8SHA_VIP/${K8SHA_VIP}/g" \
-e "s/K8SHA_KA_AUTH/${K8SHA_KEEPALIVED_AUTH}/g" \
config/keepalived/k8s-keepalived.conf.tpl > config/$K8SHA_HOST2/keepalived/keepalived.conf

sed \
-e "s/K8SHA_KA_STATE/BACKUP/g" \
-e "s/K8SHA_KA_INTF/${K8SHA_NETINF3}/g" \
-e "s/K8SHA_IPLOCAL/${K8SHA_IP3}/g" \
-e "s/K8SHA_KA_PRIO/100/g" \
-e "s/K8SHA_VIP/${K8SHA_VIP}/g" \
-e "s/K8SHA_KA_AUTH/${K8SHA_KEEPALIVED_AUTH}/g" \
config/keepalived/k8s-keepalived.conf.tpl > config/$K8SHA_HOST3/keepalived/keepalived.conf

echo "create keepalived files success. config/$K8SHA_HOST1/keepalived/"
echo "create keepalived files success. config/$K8SHA_HOST2/keepalived/"
echo "create keepalived files success. config/$K8SHA_HOST3/keepalived/"

# create all haproxy files
sed \
-e "s/K8SHA_IP1/$K8SHA_IP1/g" \
-e "s/K8SHA_IP2/$K8SHA_IP2/g" \
-e "s/K8SHA_IP3/$K8SHA_IP3/g" \
-e "s/K8SHA_HOST1/$K8SHA_HOST1/g" \
-e "s/K8SHA_HOST2/$K8SHA_HOST2/g" \
-e "s/K8SHA_HOST3/$K8SHA_HOST3/g" \
config/haproxy/k8s-haproxy.cfg.tpl > config/haproxy/haproxy.conf

# create calico yaml file
sed \
-e "s/K8SHA_PODCIDR/${K8SHA_PODCIDR}/g" \
config/calico/calico.yaml.tpl > config/calico/calico.yaml

echo "create haproxy files success. config/$K8SHA_HOST1/haproxy/"
echo "create haproxy files success. config/$K8SHA_HOST2/haproxy/"
echo "create haproxy files success. config/$K8SHA_HOST3/haproxy/"

# scp all file
scp -rp config/haproxy/haproxy.conf root@$K8SHA_HOST1:/etc/haproxy/haproxy.cfg
scp -rp config/haproxy/haproxy.conf root@$K8SHA_HOST2:/etc/haproxy/haproxy.cfg
scp -rp config/haproxy/haproxy.conf root@$K8SHA_HOST3:/etc/haproxy/haproxy.cfg
scp -rp config/haproxy/k8s-haproxy.service root@$K8SHA_HOST1:/usr/lib/systemd/system/haproxy.service
scp -rp config/haproxy/k8s-haproxy.service root@$K8SHA_HOST2:/usr/lib/systemd/system/haproxy.service
scp -rp config/haproxy/k8s-haproxy.service root@$K8SHA_HOST3:/usr/lib/systemd/system/haproxy.service

scp -rp config/$K8SHA_HOST1/keepalived/* root@$K8SHA_HOST1:/etc/keepalived/
scp -rp config/$K8SHA_HOST2/keepalived/* root@$K8SHA_HOST2:/etc/keepalived/
scp -rp config/$K8SHA_HOST3/keepalived/* root@$K8SHA_HOST3:/etc/keepalived/

# chmod *.sh
chmod u+x config/*.sh
