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Binary_installation_of_Kubernetes_v1.24.sh
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Binary_installation_of_Kubernetes_v1.24.sh
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#!/bin/bash
###
# 作者：陈步云
# 微信：15648907522
# 使用说明：
# 该脚本示例需要八台服务器，在八台服务器中有一台是用于执行该脚本的，
# 另外有六台k8s服务器，其他俩台作为lb负载均衡服务器。
#
# 将其中服务器配置好静态IP，修改如下变量中的IP即可。
# 同时查看服务器中的网卡名，并将其修改。
#
# 执行脚本可使用bash -x 即可显示执行中详细信息。
# 该脚本已适配centos7和centos8。
# 脚本中hosts有俩处，记得修改。
###
#每个节点的IP
export k8s_master01="192.168.1.61"
export k8s_master02="192.168.1.62"
export k8s_master03="192.168.1.63"
export k8s_node01="192.168.1.64"
export k8s_node02="192.168.1.65"
export k8s_node03="192.168.1.66"
export lb_01="192.168.1.67"
export lb_02="192.168.1.68"
export lb_vip="192.168.1.69"
#物理网络ip地址段
export ip_segment="192.168.1.0\/24"
#k8s自定义域名
export domain="x.oiox.cn"
#物理机网卡名
export eth="ens18"
#三台服务器密码统一为123123
export passwd="123123"
export master01="k8s-master01"
export master02="k8s-master02"
export master03="k8s-master03"
export node01="k8s-node01"
export node02="k8s-node02"
export node03="k8s-node03"
export lb01="lb01"
export lb02="lb02"
export IP="k8s-master01 k8s-master02 k8s-master03 k8s-node01 k8s-node02 k8s-node03 lb01 lb02"
export other="k8s-master02 k8s-master03 k8s-node01 k8s-node02 k8s-node03 lb01 lb02"
export k8s_other="k8s-master02 k8s-master03 k8s-node01 k8s-node02 k8s-node03"
export k8s="k8s-master01 k8s-master02 k8s-master03 k8s-node01 k8s-node02 k8s-node03 "
export Master='k8s-master01 k8s-master02 k8s-master03'
export Work='k8s-node01 k8s-node02 k8s-node03'
export lb='lb01 lb02'
function ping_test() {
a=()
for ip in $k8s
do
ping -c 2 $ip >/dev/null
[[ $? -ne 0 ]] && a+=($ip)
done
echo ${a[*]}
}
function os() {
os=$(cat /etc/os-release 2>/dev/null | grep ^ID= | awk -F= '{print $2}')
if [ "$os" = "\"centos\"" ]; then
yum update ; yum install -y sshpass
fi
if [ "$os" = "ubuntu" ]; then
apt update ; apt install -y sshpass
fi
echo $os
}
function set_local() {
os=$(cat /etc/os-release 2>/dev/null | grep ^ID= | awk -F= '{print $2}')
if [ "$os" = "\"centos\"" ]; then
yum update ; yum install -y sshpass
fi
if [ "$os" = "ubuntu" ]; then
apt update ; apt install -y sshpass
fi
echo $os
if [ $? == 0 ]; then
echo "sshpass安装成功"
else
echo '安装失败请检查安装机的安装源'
exit
fi
echo "本机写入hosts配置文件..."
cat > /etc/hosts <<EOF
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
$k8s_master01 k8s-master01
$k8s_master02 k8s-master02
$k8s_master03 k8s-master03
$k8s_node01 k8s-node01
$k8s_node02 k8s-node02
$k8s_node03 k8s-node03
$lb_01 lb01
$lb_02 lb02
$lb_vip lb-vip
EOF
echo "本机配置ssh免密..."
rm -f /root/.ssh/id_rsa
ssh-keygen -f /root/.ssh/id_rsa -P ''
export SSHPASS=$passwd
for HOST in $IP;do
sshpass -e ssh-copy-id -o StrictHostKeyChecking=no $HOST
done
}
function init_all() {
for HOST in $k8s;do
{
echo "配置主机 $HOST yum源"
ssh root@$HOST "sed -e 's|^mirrorlist=|#mirrorlist=|g' -e 's|^#baseurl=http://mirror.centos.org/\$contentdir|baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos|g' -i.bak /etc/yum.repos.d/CentOS-*.repo"
echo "安装$HOST 基础环境"
ssh root@$HOST "yum update -y ; yum -y install wget jq psmisc vim net-tools nfs-utils telnet yum-utils device-mapper-persistent-data lvm2 git network-scripts tar curl chrony -y"
ssh root@$HOST "yum install epel* -y"
ssh root@$HOST "sed -e 's!^metalink=!#metalink=!g' -e 's!^#baseurl=!baseurl=!g' -e 's!//download\.fedoraproject\.org/pub!//mirrors.tuna.tsinghua.edu.cn!g' -e 's!//download\.example/pub!//mirrors.tuna.tsinghua.edu.cn!g' -e 's!http://mirrors!https://mirrors!g' -i /etc/yum.repos.d/epel*.repo"
wait
} >> $HOST.txt &
done
wait
for HOST in $k8s;do
{
echo "配置 $HOST 主机名"
ssh root@$HOST "hostnamectl set-hostname $HOST"
echo "在主机 $HOST 配置hosts配置..."
ssh root@$HOST "cat > /etc/hosts << EOF
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
$k8s_master01 k8s-master01
$k8s_master02 k8s-master02
$k8s_master03 k8s-master03
$k8s_node01 k8s-node01
$k8s_node02 k8s-node02
$k8s_node03 k8s-node03
$lb_01 lb01
$lb_02 lb02
$lb_vip lb-vip
EOF
"
echo "关闭$HOST 防火墙"
ssh root@$HOST "systemctl disable --now firewalld"
echo "关闭$HOST selinux"
ssh root@$HOST "setenforce 0"
ssh root@$HOST "sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config"
echo "关闭$HOST swa分区"
ssh root@$HOST "sed -ri 's/.*swap.*/#&/' /etc/fstab"
ssh root@$HOST "swapoff -a && sysctl -w vm.swappiness=0"
echo "在$HOST 修改fastab"
ssh root@$HOST "cat /etc/fstab"
echo "关闭$HOST NetworkManager"
ssh root@$HOST "systemctl disable --now NetworkManager"
echo "开启$HOST network"
ssh root@$HOST "systemctl start network && systemctl enable network"
echo "修改$HOST limits"
ssh root@$HOST "cat >> /etc/security/limits.conf <<EOF
* soft nofile 655360
* hard nofile 131072
* soft nproc 655350
* hard nproc 655350
* seft memlock unlimited
* hard memlock unlimitedd
EOF
ulimit -SHn 65535
"
echo "升级$HOST 内核"
os_version=$(ssh root@$HOST "cat /etc/os-release 2>/dev/null | grep VERSION_ID= | awk -F= '{print \$2}'")
if [ "$os_version" = "\"7\"" ]; then
ssh root@$HOST "yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm -y ; sed -i \"s@mirrorlist@#mirrorlist@g\" /etc/yum.repos.d/elrepo.repo ; sed -i \"[email protected]/[email protected]/elrepo@g\" /etc/yum.repos.d/elrepo.repo ; yum --disablerepo=\"*\" --enablerepo=\"elrepo-kernel\" list available -y ; yum --enablerepo=elrepo-kernel install kernel-ml -y ; grubby --set-default \$(ls /boot/vmlinuz-* | grep elrepo) ; grubby --default-kernel"
fi
if [ "$os_version" = "\"8\"" ]; then
ssh root@$HOST "yum install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm -y ; sed -i \"s@mirrorlist@#mirrorlist@g\" /etc/yum.repos.d/elrepo.repo ; sed -i \"[email protected]/[email protected]/elrepo@g\" /etc/yum.repos.d/elrepo.repo ; yum --disablerepo=\"*\" --enablerepo=\"elrepo-kernel\" list available -y ; yum --enablerepo=elrepo-kernel install kernel-ml -y ; grubby --default-kernel"
fi
echo "安装$HOST ipvs模块"
ssh root@$HOST "yum install ipvsadm ipset sysstat conntrack libseccomp -y"
ssh root@$HOST "cat >> /etc/modules-load.d/ipvs.conf <<EOF
cat
ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
ip_tables
ip_set
xt_set
ipt_set
ipt_rpfilter
ipt_REJECT
ipip
EOF
systemctl restart systemd-modules-load.service"
ssh root@$HOST "lsmod | grep -e ip_vs -e nf_conntrack"
echo "配置$HOST 内核参数"
ssh root@$HOST "cat > /etc/sysctl.d/k8s.conf <<EOF
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
fs.may_detach_mounts = 1
vm.overcommit_memory=1
vm.panic_on_oom=0
fs.inotify.max_user_watches=89100
fs.file-max=52706963
fs.nr_open=52706963
net.netfilter.nf_conntrack_max=2310720
net.ipv4.tcp_keepalive_time = 600
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_intvl =15
net.ipv4.tcp_max_tw_buckets = 36000
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_max_orphans = 327680
net.ipv4.tcp_orphan_retries = 3
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.ip_conntrack_max = 65536
net.ipv4.tcp_max_syn_backlog = 16384
net.ipv4.tcp_timestamps = 0
net.core.somaxconn = 16384
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv6.conf.all.forwarding = 0
EOF"
ssh root@$HOST "sysctl --system"
} >> $HOST.txt &
done
wait
for HOST in $k8s;do
echo "重启$HOST"
ssh root@$HOST "reboot"
done
while true; do
sleep 10
ping_res=$(ping_test)
if [ -z "$ping_res" ]
then
echo "服务器重启完成"
break
else
echo "未启动服务器：$ping_res ，等待30秒..."
fi
sleep 20
done
for HOST in $master01;do
echo "配置时钟同步"
ssh root@$HOST "cat > /etc/chrony.conf << EOF
pool ntp.aliyun.com iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
allow $ip_segment
local stratum 10
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF
systemctl restart chronyd
systemctl enable chronyd
" ;done
for HOST in $other;do
echo "配置主机$HOST时钟同步"
ssh root@$HOST "cat > /etc/chrony.conf << EOF
pool $master01 iburst
driftfile /var/lib/chrony/drift
makestep 1.0 3
rtcsync
keyfile /etc/chrony.keys
leapsectz right/UTC
logdir /var/log/chrony
EOF
systemctl restart chronyd ; systemctl enable chronyd
" ;done
wait
}
function init_local(){
for HOST in $k8s;do
{
echo "创建$HOST目录"
ssh root@$HOST "mkdir -p /opt/cni/bin"
ssh root@$HOST "mkdir -p /etc/kubernetes/pki"
ssh root@$HOST "mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes"
} >> $HOST.txt
done
export filesize=$(ls -l $fille_name.tar | awk '{ print $5 }')
if [ -f "$fille_name.tar" ]; then
echo "所需程序已存在"
if (( $filesize == 628551226 && $filesize == 654356480 && $filesize == 556891795)); then
echo "下载所需程序"
rm -f $fille_name.tar
wget $version
else
echo "所需程序已存在"
fi
else
echo "下载所需程序"
wget $version
fi
echo "解压安装包"
tar xf $fille_name.tar
scp -r $fille_name root@$master01:
echo "配置证书工具"
cd $fille_name/cby/ || exit
cp cfssl_*_linux_amd64 /usr/local/bin/cfssl
cp cfssljson_*_linux_amd64 /usr/local/bin/cfssljson
chmod +x /usr/local/bin/cfssljson /usr/local/bin/cfssl
for NODE in $k8s; do scp cni-plugins-linux-amd64* cri-containerd-cni* crictl* "$NODE":/root/ ; done
echo "拷贝所需程序包"
tar -xf kubernetes-server-linux-amd64.tar.gz --strip-components=3 -C /usr/local/bin kubernetes/server/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy}
tar -xf etcd*.tar.gz && mv etcd-*/etcd /usr/local/bin/ && mv etcd-*/etcdctl /usr/local/bin/
echo "将所需组件发送到k8s节点"
for NODE in $Master; do echo "$NODE"; scp /usr/local/bin/kube{let,ctl,-apiserver,-controller-manager,-scheduler,-proxy} "$NODE":/usr/local/bin/; scp /usr/local/bin/etcd* $NODE:/usr/local/bin/; done
for NODE in $Work; do scp /usr/local/bin/kube{let,-proxy} "$NODE":/usr/local/bin/ ; done
mkdir -p /opt/cni/bin
mkdir /etc/etcd/ssl -p
echo "生成etcd证书"
cd ../pki/ || exit
cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare /etc/etcd/ssl/etcd-ca
cfssl gencert -ca=/etc/etcd/ssl/etcd-ca.pem -ca-key=/etc/etcd/ssl/etcd-ca-key.pem -config=ca-config.json -hostname=127.0.0.1,k8s-master01,k8s-master02,k8s-master03,$k8s_master01,$k8s_master02,$k8s_master03 -profile=kubernetes etcd-csr.json | cfssljson -bare /etc/etcd/ssl/etcd
echo "分发etcd证书"
for NODE in $Master; do
ssh "$NODE" "mkdir -p /etc/etcd/ssl"
for FILE in etcd-ca-key.pem etcd-ca.pem etcd-key.pem etcd.pem; do
scp /etc/etcd/ssl/${FILE} "$NODE":/etc/etcd/ssl/${FILE}
done
done
echo "生成k8s证书"
mkdir -p /etc/kubernetes/pki
cfssl gencert -initca ca-csr.json | cfssljson -bare /etc/kubernetes/pki/ca
cfssl gencert -ca=/etc/kubernetes/pki/ca.pem -ca-key=/etc/kubernetes/pki/ca-key.pem -config=ca-config.json -hostname=10.96.0.1,$lb_vip,127.0.0.1,kubernetes,kubernetes.default,kubernetes.default.svc,kubernetes.default.svc.cluster,kubernetes.default.svc.cluster.local,$domain,$k8s_master01,$k8s_master02,$k8s_master03 -profile=kubernetes apiserver-csr.json | cfssljson -bare /etc/kubernetes/pki/apiserver
echo "生成k8s-apiserver证书"
cfssl gencert -initca front-proxy-ca-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-ca
cfssl gencert -ca=/etc/kubernetes/pki/front-proxy-ca.pem -ca-key=/etc/kubernetes/pki/front-proxy-ca-key.pem -config=ca-config.json -profile=kubernetes front-proxy-client-csr.json | cfssljson -bare /etc/kubernetes/pki/front-proxy-client
echo "生成controller-manage证书"
cfssl gencert -ca=/etc/kubernetes/pki/ca.pem -ca-key=/etc/kubernetes/pki/ca-key.pem -config=ca-config.json -profile=kubernetes manager-csr.json | cfssljson -bare /etc/kubernetes/pki/controller-manager
kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/pki/ca.pem --embed-certs=true --server=https://$lb_vip:8443 --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
kubectl config set-context system:kube-controller-manager@kubernetes --cluster=kubernetes --user=system:kube-controller-manager --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
kubectl config set-credentials system:kube-controller-manager --client-certificate=/etc/kubernetes/pki/controller-manager.pem --client-key=/etc/kubernetes/pki/controller-manager-key.pem --embed-certs=true --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
kubectl config use-context system:kube-controller-manager@kubernetes --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig
cfssl gencert -ca=/etc/kubernetes/pki/ca.pem -ca-key=/etc/kubernetes/pki/ca-key.pem -config=ca-config.json -profile=kubernetes scheduler-csr.json | cfssljson -bare /etc/kubernetes/pki/scheduler
kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/pki/ca.pem --embed-certs=true --server=https://$lb_vip:8443 --kubeconfig=/etc/kubernetes/scheduler.kubeconfig
kubectl config set-credentials system:kube-scheduler --client-certificate=/etc/kubernetes/pki/scheduler.pem --client-key=/etc/kubernetes/pki/scheduler-key.pem --embed-certs=true --kubeconfig=/etc/kubernetes/scheduler.kubeconfig
kubectl config set-context system:kube-scheduler@kubernetes --cluster=kubernetes --user=system:kube-scheduler --kubeconfig=/etc/kubernetes/scheduler.kubeconfig
kubectl config use-context system:kube-scheduler@kubernetes --kubeconfig=/etc/kubernetes/scheduler.kubeconfig
cfssl gencert -ca=/etc/kubernetes/pki/ca.pem -ca-key=/etc/kubernetes/pki/ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare /etc/kubernetes/pki/admin
kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/pki/ca.pem --embed-certs=true --server=https://$lb_vip:8443 --kubeconfig=/etc/kubernetes/admin.kubeconfig
kubectl config set-credentials kubernetes-admin --client-certificate=/etc/kubernetes/pki/admin.pem --client-key=/etc/kubernetes/pki/admin-key.pem --embed-certs=true --kubeconfig=/etc/kubernetes/admin.kubeconfig
kubectl config set-context kubernetes-admin@kubernetes --cluster=kubernetes --user=kubernetes-admin --kubeconfig=/etc/kubernetes/admin.kubeconfig
kubectl config use-context kubernetes-admin@kubernetes --kubeconfig=/etc/kubernetes/admin.kubeconfig
cfssl gencert -ca=/etc/kubernetes/pki/ca.pem -ca-key=/etc/kubernetes/pki/ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare /etc/kubernetes/pki/kube-proxy
kubectl config set-cluster kubernetes --certificate-authority=/etc/kubernetes/pki/ca.pem --embed-certs=true --server=https://$lb_vip:8443 --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
kubectl config set-credentials kube-proxy --client-certificate=/etc/kubernetes/pki/kube-proxy.pem --client-key=/etc/kubernetes/pki/kube-proxy-key.pem --embed-certs=true --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
kubectl config set-context kube-proxy@kubernetes --cluster=kubernetes --user=kube-proxy --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
kubectl config use-context kube-proxy@kubernetes --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig
echo "创建ServiceAccount Key"
openssl genrsa -out /etc/kubernetes/pki/sa.key 2048
openssl rsa -in /etc/kubernetes/pki/sa.key -pubout -out /etc/kubernetes/pki/sa.pub
echo "分发证书到每个节点"
for NODE in $k8s; do
for FILE in $(ls /etc/kubernetes/pki | grep -v etcd); do
scp /etc/kubernetes/pki/"${FILE}" "$NODE":/etc/kubernetes/pki/"${FILE}";
done;
for FILE in admin.kubeconfig controller-manager.kubeconfig scheduler.kubeconfig kube-proxy.kubeconfig; do
scp /etc/kubernetes/${FILE} "$NODE":/etc/kubernetes/${FILE};
done;
done
}
function Containerd() {
for HOST in $k8s;do
{
echo "配置主机$HOST Containerd"
ssh root@$HOST "mkdir -p /etc/cni/net.d /opt/cni/bin /etc/containerd"
ssh root@$HOST "tar xf cni-plugins-linux-amd64*.tgz -C /opt/cni/bin/"
ssh root@$HOST "tar xf cri-containerd-cni*.tar.gz -C /"
ssh root@$HOST "tar xf crictl* -C /usr/bin/"
echo "配置主机$HOST 配置crictl客户端连接的运行时位置"
ssh root@$HOST "/etc/systemd/system/containerd.service << EOF
[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target local-fs.target
[Service]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/containerd
Type=notify
Delegate=yes
KillMode=process
Restart=always
RestartSec=5
LimitNPROC=infinity
LimitCORE=infinity
LimitNOFILE=infinity
TasksMax=infinity
OOMScoreAdjust=-999
[Install]
WantedBy=multi-user.target
EOF"
ssh root@$HOST "/etc/modules-load.d/containerd.conf << EOF
overlay
br_netfilter
EOF"
ssh root@$HOST "/etc/sysctl.d/99-kubernetes-cri.conf << EOF
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF"
ssh root@$HOST "/etc/crictl.yaml << EOF
runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///run/containerd/containerd.sock
timeout: 10
debug: false
EOF"
echo "启用主机$HOST Containerd"
ssh root@$HOST "sysctl --system"
ssh root@$HOST "systemctl daemon-reload"
ssh root@$HOST "systemctl restart systemd-modules-load.service"
ssh root@$HOST "containerd config default | tee /etc/containerd/config.toml"
ssh root@$HOST "sed -i \"s#SystemdCgroup\ \=\ false#SystemdCgroup\ \=\ true#g\" /etc/containerd/config.toml"
ssh root@$HOST "sed -i \"s#k8s.gcr.io#registry.cn-hangzhou.aliyuncs.com/chenby#g\" /etc/containerd/config.toml"
ssh root@$HOST "systemctl enable --now containerd"
} >> $HOST.txt &
done
wait
}
function init_etcd(){
for HOST in $master01;do
{
echo "配置主机$HOST etcd"
ssh root@$HOST "cat > /etc/etcd/etcd.config.yml << EOF
name: 'k8s-master01'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://$k8s_master01:2380'
listen-client-urls: 'https://$k8s_master01:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://$k8s_master01:2380'
advertise-client-urls: 'https://$k8s_master01:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://$k8s_master01:2380,k8s-master02=https://$k8s_master02:2380,k8s-master03=https://$k8s_master03:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
peer-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
peer-client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF"
} >> $HOST.txt
done
for HOST in $master02;do
{
echo "配置主机$HOST etcd"
ssh root@$HOST "cat > /etc/etcd/etcd.config.yml << EOF
name: 'k8s-master02'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://$k8s_master02:2380'
listen-client-urls: 'https://$k8s_master02:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://$k8s_master02:2380'
advertise-client-urls: 'https://$k8s_master02:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://$k8s_master01:2380,k8s-master02=https://$k8s_master02:2380,k8s-master03=https://$k8s_master03:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
peer-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
peer-client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF"
} >> $HOST.txt
done
for HOST in $master03;do
{
echo "配置主机$HOST etcd"
ssh root@$HOST "cat > /etc/etcd/etcd.config.yml << EOF
name: 'k8s-master03'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://$k8s_master03:2380'
listen-client-urls: 'https://$k8s_master03:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://$k8s_master03:2380'
advertise-client-urls: 'https://$k8s_master03:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://$k8s_master01:2380,k8s-master02=https://$k8s_master02:2380,k8s-master03=https://$k8s_master03:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
peer-transport-security:
cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
peer-client-cert-auth: true
trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF"
} >> $HOST.txt
done
for HOST in $Master;do
{
echo "配置主机$HOST etcd service文件"
ssh root@"$HOST" "cat > /usr/lib/systemd/system/etcd.service << EOF
[Unit]
Description=Etcd Service
Documentation=https://coreos.com/etcd/docs/latest/
After=network.target
[Service]
Type=notify
ExecStart=/usr/local/bin/etcd --config-file=/etc/etcd/etcd.config.yml
Restart=on-failure
RestartSec=10
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
Alias=etcd3.service
EOF"
echo "测试$HOST etcd"
ssh root@"$HOST" "mkdir /etc/kubernetes/pki/etcd ; ln -s /etc/etcd/ssl/* /etc/kubernetes/pki/etcd/ ; systemctl daemon-reload ; systemctl enable etcd ; systemctl start etcd"
} >> "$HOST".txt
done
}
function init_ha_keep() {
for HOST in $lb;do
{
echo "配置主机$HOST yum源"
ssh root@$HOST "sed -e 's|^mirrorlist=|#mirrorlist=|g' -e 's|^#baseurl=http://mirror.centos.org/\$contentdir|baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos|g' -i.bak /etc/yum.repos.d/CentOS-*.repo"
echo "配置主机$HOST y防火墙"
ssh root@"$HOST" "systemctl disable --now firewalld"
echo "配置主机$HOST selinux"
ssh root@"$HOST" "setenforce 0"
ssh root@"$HOST" "sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config"
echo "配置主机$HOST 软件"
ssh root@"$HOST" "yum -y install keepalived haproxy"
echo "配置主机$HOST 配置文件"
ssh root@"$HOST" "cat > /etc/haproxy/haproxy.cfg << EOF
global
maxconn 2000
ulimit-n 16384
log 127.0.0.1 local0 err
stats timeout 30s
defaults
log global
mode http
option httplog
timeout connect 5000
timeout client 50000
timeout server 50000
timeout http-request 15s
timeout http-keep-alive 15s
frontend monitor-in
bind *:33305
mode http
option httplog
monitor-uri /monitor
frontend k8s-master
bind 0.0.0.0:8443
bind 127.0.0.1:8443
mode tcp
option tcplog
tcp-request inspect-delay 5s
default_backend k8s-master
backend k8s-master
mode tcp
option tcplog
option tcp-check
balance roundrobin
default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
server master01 $k8s_master01:6443 check
server master02 $k8s_master02:6443 check
server master03 $k8s_master03:6443 check
EOF"
} >> "$HOST".txt
done
for HOST in $lb01;do
{
echo "配置主机$HOST 配置文件"
ssh root@"$HOST" "cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
script \"/etc/keepalived/check_apiserver.sh\"
interval 5
weight -5
fall 2
rise 1
}
vrrp_instance VI_1 {
state MASTER
interface $eth
mcast_src_ip $lb_01
virtual_router_id 51
priority 100
nopreempt
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {
$lb_vip
}
track_script {
chk_apiserver
} }
EOF"
echo "配置主机$HOST 检查脚本"
ssh root@"$HOST" "cat > /etc/keepalived/check_apiserver.sh << EOF
#!/bin/bash
err=0
for k in \$(seq 1 3)
do
check_code=\$(pgrep haproxy)
if [[ \$check_code == \"\" ]]; then
err=\$(expr \$err + 1)
sleep 1
continue
else
err=0
break
fi
done
if [[ \$err != \"\0\" ]]; then
echo \"systemctl stop keepalived\"
/usr/bin/systemctl stop keepalived
exit 1
else
exit 0
fi
EOF"
} >> "$HOST".txt
done
for HOST in $lb02;do
{
echo "配置主机$HOST 配置文件"
ssh root@"$HOST" "cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
script \"/etc/keepalived/check_apiserver.sh\"
interval 5
weight -5
fall 2
rise 1
}
vrrp_instance VI_1 {
state BACKUP
interface $eth
mcast_src_ip $lb_02
virtual_router_id 51
priority 50
nopreempt
advert_int 2
authentication {
auth_type PASS
auth_pass K8SHA_KA_AUTH
}
virtual_ipaddress {
$lb_vip
}
track_script {
chk_apiserver
} }
EOF"
echo "配置主机$HOST 检查脚本"
ssh root@"$HOST" "cat > /etc/keepalived/check_apiserver.sh << EOF
#!/bin/bash
err=0
for k in \$(seq 1 3)
do
check_code=\$(pgrep haproxy)
if [[ \$check_code == \"\" ]]; then
err=\$(expr \$err + 1)
sleep 1
continue
else
err=0
break
fi
done
if [[ \$err != \"\0\" ]]; then
echo \"systemctl stop keepalived\"
/usr/bin/systemctl stop keepalived
exit 1
else
exit 0
fi
EOF"
} >> "$HOST".txt
done
for HOST in $lb;do
{
echo "配置主机$HOST 检查脚本执行权限"
ssh root@"$HOST" "chmod +x /etc/keepalived/check_apiserver.sh"
echo "配置主机$HOST 开机自启"
ssh root@"$HOST" "systemctl daemon-reload"
ssh root@"$HOST" "systemctl enable --now haproxy"
ssh root@"$HOST" "systemctl enable --now keepalived"
} >> "$HOST".txt
done
}
function init_k8s_master() {
for HOST in $master01;do
{
echo "配置主机$HOST api-server配置文件"
ssh root@"$HOST" "cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target
[Service]
ExecStart=/usr/local/bin/kube-apiserver \\
--v=2 \\
--logtostderr=true \\
--allow-privileged=true \\
--bind-address=0.0.0.0 \\
--secure-port=6443 \\
--advertise-address=$k8s_master01 \\
--service-cluster-ip-range=10.96.0.0/12,fd00::/108 \\
--feature-gates=IPv6DualStack=true \\
--service-node-port-range=30000-32767 \\
--etcd-servers=https://$k8s_master01:2379,https://$k8s_master02:2379,https://$k8s_master03:2379 \\
--etcd-cafile=/etc/etcd/ssl/etcd-ca.pem \\
--etcd-certfile=/etc/etcd/ssl/etcd.pem \\
--etcd-keyfile=/etc/etcd/ssl/etcd-key.pem \\
--client-ca-file=/etc/kubernetes/pki/ca.pem \\
--tls-cert-file=/etc/kubernetes/pki/apiserver.pem \\
--tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem \\
--kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem \\
--kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem \\
--service-account-key-file=/etc/kubernetes/pki/sa.pub \\
--service-account-signing-key-file=/etc/kubernetes/pki/sa.key \\