Centos7離線部署kubernetes 1.13集羣記錄

時間 2019-12-17

標籤 centos7 centos 離線部署 kubernetes 1.13 集羣記錄欄目 Tomcat 简体版

原文原文鏈接

1、說明html

本篇主要參考kubernetes中文社區的一篇部署文章（CentOS 使用二進制部署 Kubernetes 1.13集羣），並作了更詳細的記錄以備用。node

2、部署環境linux

一、kubernetes 版本：1.13，二進制文件git

在參考文章中有下載。github

二、本地部署環境docker

ip	hostname	version	部署
10.0.3.107	manager107	3.10.0-957.1.3.el7.x86_64	api-server，scheduler，controller-manager，etcd，kubelet，kube-proxy，flannel
10.0.3.68	worker68	3.10.0-957.1.3.el7.x86_64	kubelet，kube-proxy，flannel
10.0.3.80	worker80	3.10.0-957.1.3.el7.x86_64	kubelet，kube-proxy，flannel

三、部署網絡說明json

參考CentOS 使用二進制部署 Kubernetes 1.13集羣。bootstrap

3、kubernetes 安裝及配置vim

一、建立臨時目錄centos

#存放etcd證書及配置文件
[root@manager107 ~]# mkdir -p /home/workspace/etcd
#存放k8s證書及配置文件
[root@manager107 ~]# mkdir -p /home/workspace/k8s
#存放k8s安裝文件
[root@manager107 ~]# mkdir -p /home/workspace/packages

二、設置關閉防火牆、Swap及SELINUX

3臺服務器上執行：

systemctl stop firewalld && systemctl disable firewalld
setenforce 0
swapoff -a && sysctl -w vm.swappiness=0
vi /etc/selinux/config
SELINUX=disabled

三、安裝docker

略

四、建立安裝目錄

[root@manager107 ~]# mkdir /k8s/etcd/{bin,cfg,ssl} -p
[root@manager107 ~]# mkdir /k8s/kubernetes/{bin,cfg,ssl} -p

五、安裝及配置CFSSL

[root@manager107 ~]# wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
[root@manager107 ~]# wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
[root@manager107 ~]# wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
[root@manager107 ~]# chmod +x cfssl_linux-amd64 cfssljson_linux-amd64 cfssl-certinfo_linux-amd64
[root@manager107 ~]# mv cfssl_linux-amd64 /usr/local/bin/cfssl
[root@manager107 ~]# mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
[root@manager107 ~]# mv cfssl-certinfo_linux-amd64 /usr/bin/cfssl-certinfo

六、建立認證證書

[root@manager107 ~]# cd /home/workspace/etcd
#建立 ETCD 證書
[root@manager107 etcd]# cat << EOF | tee ca-config.json
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "www": {
         "expiry": "87600h",
         "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ]
      }
    }
  }
}
EOF
#建立 ETCD CA 配置文件
[root@manager107 etcd]# cat << EOF | tee ca-csr.json
{
    "CN": "etcd CA",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Shenzhen",
            "ST": "Shenzhen"
        }
    ]
}
EOF
#建立 ETCD Server 證書
[root@manager107 etcd]# cat << EOF | tee server-csr.json
{
    "CN": "etcd",
    "hosts": [
    "10.0.3.107",
    "10.0.3.68",
    "10.0.3.80"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Shenzhen",
            "ST": "Shenzhen"
        }
    ]
}
EOF
#生成 ETCD CA 證書和私鑰
[root@manager107 etcd]# cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
[root@manager107 etcd]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server

[root@manager107 etcd]# cd /home/workspace/k8s/
#建立 Kubernetes CA 證書
[root@manager107 k8s]# cat << EOF | tee ca-config.json
{
  "signing": {
    "default": {
      "expiry": "87600h"
    },
    "profiles": {
      "kubernetes": {
         "expiry": "87600h",
         "usages": [
            "signing",
            "key encipherment",
            "server auth",
            "client auth"
        ]
      }
    }
  }
}
EOF
[root@manager107 k8s]# cat << EOF | tee ca-csr.json
{
    "CN": "kubernetes",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Shenzhen",
            "ST": "Shenzhen",
            "O": "k8s",
            "OU": "System"
        }
    ]
}
EOF
[root@manager107 k8s]# cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
#生成API_SERVER證書
[root@manager107 k8s]# cat << EOF | tee server-csr.json
{
    "CN": "kubernetes",
    "hosts": [
      "10.0.0.1",
      "127.0.0.1",
      "10.0.3.107",
      "kubernetes",
      "kubernetes.default",
      "kubernetes.default.svc",
      "kubernetes.default.svc.cluster",
      "kubernetes.default.svc.cluster.local"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "Shenzhen",
            "ST": "Shenzhen",
            "O": "k8s",
            "OU": "System"
        }
    ]
}
EOF
[root@manager107 k8s]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server
#建立 Kubernetes Proxy 證書
[root@manager107 k8s]# cat << EOF | tee kube-proxy-csr.json
{
  "CN": "system:kube-proxy",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "L": "Shenzhen",
      "ST": "Shenzhen",
      "O": "k8s",
      "OU": "System"
    }
  ]
}
EOF
[root@manager107 k8s]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy

七、ssh-key認證

[root@manager107 ~]# ssh-keygen
[root@manager107 ~]# ssh-copy-id 10.0.3.68
[root@manager107 ~]# ssh-copy-id 10.0.3.80

八、部署etcd

[root@manager107 workspace]# cd /home/workspace/packages/k8s1.13-centos
[root@manager107 k8s1.13-centos]# tar -xvf etcd-v3.3.10-linux-amd64.tar.gz
[root@manager107 k8s1.13-centos]# cd etcd-v3.3.10-linux-amd64/
[root@manager107 etcd-v3.3.10-linux-amd64]# cp etcd etcdctl /k8s/etcd/bin/
[root@manager107 etcd-v3.3.10-linux-amd64]# vim /k8s/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd01"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.0.3.107:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.0.3.107:2379"

#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.0.3.107:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.0.3.107:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://10.0.3.107:2380,etcd02=https://10.0.3.68:2380,etcd03=https://10.0.3.80:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
#建立 etcd的 systemd unit 文件
[root@manager107 etcd-v3.3.10-linux-amd64]# vim /usr/lib/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
EnvironmentFile=/k8s/etcd/cfg/etcd
ExecStart=/k8s/etcd/bin/etcd \
--name=${ETCD_NAME} \
--data-dir=${ETCD_DATA_DIR} \
--listen-peer-urls=${ETCD_LISTEN_PEER_URLS} \
--listen-client-urls=${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \
--advertise-client-urls=${ETCD_ADVERTISE_CLIENT_URLS} \
--initial-advertise-peer-urls=${ETCD_INITIAL_ADVERTISE_PEER_URLS} \
--initial-cluster=${ETCD_INITIAL_CLUSTER} \
--initial-cluster-token=${ETCD_INITIAL_CLUSTER_TOKEN} \
--initial-cluster-state=new \
--cert-file=/k8s/etcd/ssl/server.pem \
--key-file=/k8s/etcd/ssl/server-key.pem \
--peer-cert-file=/k8s/etcd/ssl/server.pem \
--peer-key-file=/k8s/etcd/ssl/server-key.pem \
--trusted-ca-file=/k8s/etcd/ssl/ca.pem \
--peer-trusted-ca-file=/k8s/etcd/ssl/ca.pem
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
#拷貝證書文件
[root@manager107 etcd-v3.3.10-linux-amd64]# cd /home/workspace/etcd/
[root@manager107 etcd]# cp ca*pem server*pem /k8s/etcd/ssl
#將啓動文件、配置文件拷貝到 節點6八、節點80
[root@manager107 etcd]# cd /k8s/
[root@manager107 k8s]# scp -r etcd 10.0.3.68:/k8s/etcd/
[root@manager107 k8s]# scp -r etcd 10.0.3.80:/k8s/etcd/
[root@manager107 k8s]# scp /usr/lib/systemd/system/etcd.service  10.0.3.68:/usr/lib/systemd/system/etcd.service
[root@manager107 k8s]# scp /usr/lib/systemd/system/etcd.service  10.0.3.80:/usr/lib/systemd/system/etcd.service
#在68上修改etcd配置文件
[root@worker68 ~]# vim /k8s/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd02"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.0.3.68:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.0.3.68:2379"

#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.0.3.68:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.0.3.68:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://10.0.3.107:2380,etcd02=https://10.0.3.68:2380,etcd03=https://10.0.3.80:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
#在80上修改etcd配置文件
[root@worker80 ~]# vim /k8s/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd03"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.0.3.80:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.0.3.80:2379"

#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.0.3.80:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://10.0.3.80:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://10.0.3.107:2380,etcd02=https://10.0.3.68:2380,etcd03=https://10.0.3.80:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
#80啓動etcd
[root@worker80 ~]# systemctl daemon-reload
[root@worker80 ~]# systemctl enable etcd
[root@worker80 ~]# systemctl start etcd
#68啓動etcd
[root@worker68 ~]# systemctl daemon-reload
[root@worker68 ~]# systemctl enable etcd
[root@worker68 ~]# systemctl start etcd
#107啓動etcd
[root@manager107 ~]# systemctl daemon-reload
[root@manager107 ~]# systemctl enable etcd
[root@manager107 ~]# systemctl start etcd
#驗證集羣是否正常運行
[root@manager107 ~]# /k8s/etcd/bin/etcdctl --ca-file=/k8s/etcd/ssl/ca.pem \
--cert-file=/k8s/etcd/ssl/server.pem \
--key-file=/k8s/etcd/ssl/server-key.pem \
--endpoints="https://10.0.3.107:2379,https://10.0.3.68:2379,https://10.0.3.80:2379" \
cluster-health

九、部署Flannel網絡

#向 etcd 寫入集羣 Pod 網段信息
[root@manager107 ssl]# cd /k8s/etcd/ssl/
[root@manager107 ssl]# /k8s/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem \
--key-file=server-key.pem \
--endpoints="https://10.0.3.107:2379,https://10.0.3.68:2379,https://10.0.3.80:2379" \
set /coreos.com/network/config '{ "Network": "172.20.0.0/16", "Backend": {"Type": "vxlan"}}'
#解壓安裝
[root@manager107 ssl]# cd /home/workspace/packages/k8s1.13-centos
[root@manager107 k8s1.13-centos]# tar -xvf flannel-v0.10.0-linux-amd64.tar.gz
[root@manager107 k8s1.13-centos]# mv flanneld mk-docker-opts.sh /k8s/kubernetes/bin/
#配置Flannel
[root@manager107 k8s1.13-centos]# vim /k8s/kubernetes/cfg/flanneld
FLANNEL_OPTIONS="--etcd-endpoints=https://10.0.3.107:2379,https://10.0.3.68:2379,https://10.0.3.80:2379 -etcd-cafile=/k8s/etcd/ssl/ca.pem -etcd-certfile=/k8s/etcd/ssl/server.pem -etcd-keyfile=/k8s/etcd/ssl/server-key.pem"
#建立 flanneld 的 systemd unit 文件
[root@manager107 k8s1.13-centos]# vim /usr/lib/systemd/system/flanneld.service
[Unit]
Description=Flanneld overlay address etcd agent
After=network-online.target network.target
Before=docker.service

[Service]
Type=notify
EnvironmentFile=/k8s/kubernetes/cfg/flanneld
ExecStart=/k8s/kubernetes/bin/flanneld --ip-masq $FLANNEL_OPTIONS
ExecStartPost=/k8s/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env
Restart=on-failure

[Install]
WantedBy=multi-user.target
#配置Docker啓動指定子網段
[root@manager107 ~]# vim /usr/lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
BindsTo=containerd.service
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
EnvironmentFile=/run/flannel/subnet.env
# ExecStart=/usr/bin/dockerd  -H tcp://0.0.0.0:2376 -H unix://
ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity

# Comment TasksMax if your systemd version does not supports it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes

# kill only the docker process, not all processes in the cgroup
KillMode=process

[Install]
WantedBy=multi-user.target
[root@worker68 ~]# vim /usr/lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
BindsTo=containerd.service
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
EnvironmentFile=/run/flannel/subnet.env
# ExecStart=/usr/bin/dockerd  -H tcp://0.0.0.0:2376 -H unix://
ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity

# Comment TasksMax if your systemd version does not supports it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes

# kill only the docker process, not all processes in the cgroup
KillMode=process

[Install]
WantedBy=multi-user.target
[root@worker80 ~]# vim /usr/lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
BindsTo=containerd.service
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
EnvironmentFile=/run/flannel/subnet.env
# ExecStart=/usr/bin/dockerd  -H tcp://0.0.0.0:2376 -H unix://
ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity

# Comment TasksMax if your systemd version does not supports it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes

# kill only the docker process, not all processes in the cgroup
KillMode=process

[Install]
WantedBy=multi-user.target
#將flanneld systemd unit 文件到全部節點
[root@manager107 ~]# cd /k8s
[root@manager107 k8s]# scp -r kubernetes 10.0.3.68:/k8s/kubernetes 
[root@manager107 k8s]# scp -r kubernetes 10.0.3.80:/k8s/kubernetes 
[root@manager107 k8s]# scp /k8s/kubernetes/cfg/flanneld 10.0.3.68:/k8s/kubernetes/cfg/flanneld
[root@manager107 k8s]# scp /k8s/kubernetes/cfg/flanneld 10.0.3.80:/k8s/kubernetes/cfg/flanneld
[root@manager107 k8s]# scp /usr/lib/systemd/system/docker.service  10.0.3.68:/usr/lib/systemd/system/docker.service
[root@manager107 k8s]# scp /usr/lib/systemd/system/docker.service  10.0.3.80:/usr/lib/systemd/system/docker.service
[root@manager107 k8s]# scp /usr/lib/systemd/system/flanneld.service  10.0.3.68:/usr/lib/systemd/system/flanneld.service
[root@manager107 k8s]# scp /usr/lib/systemd/system/flanneld.service  10.0.3.80:/usr/lib/systemd/system/flanneld.service
#107上啓動flannel
[root@manager107 ~]# systemctl daemon-reload
[root@manager107 ~]# systemctl enable flanneld
[root@manager107 ~]# systemctl start flanneld
[root@manager107 ~]# systemctl restart docker
#68上啓動flannel
[root@worker68 ~]# systemctl daemon-reload
[root@worker68 ~]# systemctl enable flanneld
[root@worker68 ~]# systemctl start flanneld
[root@worker68 ~]# systemctl restart docker
#80上啓動flannel
[root@worker80 ~]# systemctl daemon-reload
[root@worker80 ~]# systemctl enable flanneld
[root@worker80 ~]# systemctl start flanneld
[root@worker80 ~]# systemctl restart docker
#查看是否生效
[root@manager107 ~]# ip add

十、部署master節點

kubernetes master 節點運行以下組件：

kube-apiserver
kube-scheduler
kube-controller-manager

kube-scheduler 和 kube-controller-manager 能夠以集羣模式運行，經過 leader 選舉產生一個工做進程，其它進程處於阻塞模式。

#將二進制文件解壓拷貝到master 節點
[root@manager107 ~]# cd /home/workspace/packages/k8s1.13-centos
[root@manager107 k8s1.13-centos]# tar -xvf kubernetes-server-linux-amd64.tar.gz
[root@manager107 k8s1.13-centos]# cd kubernetes/server/bin/
[root@manager107 bin]# cp kube-scheduler kube-apiserver kube-controller-manager kubectl /k8s/kubernetes/bin/
#拷貝認證
[root@manager107 bin]# cd /home/workspace/k8s/
[root@manager107 k8s]# cp *pem /k8s/kubernetes/ssl/
#部署 kube-apiserver 組件
##建立 TLS Bootstrapping Token
[root@manager107 k8s]# head -c 16 /dev/urandom | od -An -t x | tr -d ' '
e9ca0f3e1b66c9bef910b47171490c53
[root@manager107 k8s]# vim /k8s/kubernetes/cfg/token.csv
e9ca0f3e1b66c9bef910b47171490c53,kubelet-bootstrap,10001,"system:kubelet-bootstrap"
##建立apiserver配置文件
[root@manager107 k8s]# vim /k8s/kubernetes/cfg/kube-apiserver
KUBE_APISERVER_OPTS="--logtostderr=true \
--v=4 \
--etcd-servers=https://10.0.3.107:2379,https://10.0.3.68:2379,https://10.0.3.80:2379 \
--bind-address=10.0.3.107 \
--secure-port=6443 \
--advertise-address=10.0.3.107 \
--allow-privileged=true \
--service-cluster-ip-range=10.0.0.0/24 \
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota,NodeRestriction \
--authorization-mode=RBAC,Node \
--enable-bootstrap-token-auth \
--token-auth-file=/k8s/kubernetes/cfg/token.csv \
--service-node-port-range=30000-50000 \
--tls-cert-file=/k8s/kubernetes/ssl/server.pem  \
--tls-private-key-file=/k8s/kubernetes/ssl/server-key.pem \
--client-ca-file=/k8s/kubernetes/ssl/ca.pem \
--service-account-key-file=/k8s/kubernetes/ssl/ca-key.pem \
--etcd-cafile=/k8s/etcd/ssl/ca.pem \
--etcd-certfile=/k8s/etcd/ssl/server.pem \
--etcd-keyfile=/k8s/etcd/ssl/server-key.pem"
##建立 kube-apiserver systemd unit 文件
[root@manager107 k8s]# vim /usr/lib/systemd/system/kube-apiserver.service
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=-/k8s/kubernetes/cfg/kube-apiserver
ExecStart=/k8s/kubernetes/bin/kube-apiserver $KUBE_APISERVER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
#啓動服務
[root@manager107 k8s]# systemctl daemon-reload
[root@manager107 k8s]# systemctl enable kube-apiserver
[root@manager107 k8s]# systemctl restart kube-apiserver
#查看apiserver是否運行
[root@manager107 k8s]# systemctl status kube-apiserver
#部署kube-scheduler
##建立kube-scheduler配置文件
[root@manager107 k8s]# vim  /k8s/kubernetes/cfg/kube-scheduler
KUBE_SCHEDULER_OPTS="--logtostderr=true --v=4 --master=127.0.0.1:8080 --leader-elect"
##建立kube-scheduler systemd unit 文件
[root@manager107 k8s]# vim /usr/lib/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=-/k8s/kubernetes/cfg/kube-scheduler
ExecStart=/k8s/kubernetes/bin/kube-scheduler $KUBE_SCHEDULER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
##啓動服務
[root@manager107 k8s]# systemctl daemon-reload
[root@manager107 k8s]# systemctl enable kube-scheduler.service
[root@manager107 k8s]# systemctl start kube-scheduler.service
##查看kube-scheduler是否運行
[root@manager107 k8s]# systemctl status kube-scheduler.service
#部署kube-controller-manager
##建立kube-controller-manager配置文件
[root@manager107 k8s]# vim /k8s/kubernetes/cfg/kube-controller-manager
KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=true \
--v=4 \
--master=127.0.0.1:8080 \
--leader-elect=true \
--address=127.0.0.1 \
--service-cluster-ip-range=10.0.0.0/24 \
--cluster-name=kubernetes \
--cluster-signing-cert-file=/k8s/kubernetes/ssl/ca.pem \
--cluster-signing-key-file=/k8s/kubernetes/ssl/ca-key.pem  \
--root-ca-file=/k8s/kubernetes/ssl/ca.pem \
--service-account-private-key-file=/k8s/kubernetes/ssl/ca-key.pem"
##建立kube-controller-manager systemd unit 文件
[root@manager107 k8s]# vim /usr/lib/systemd/system/kube-controller-manager.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kube-controller-manager
ExecStart=/k8s/kubernetes/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
##啓動服務
[root@manager107 k8s]# systemctl daemon-reload
[root@manager107 k8s]# systemctl enable kube-controller-manager
[root@manager107 k8s]# systemctl start kube-controller-manager
##查看kube-controller-manager是否運行
[root@manager107 k8s]# systemctl status kube-controller-manager
#將可執行文件路/k8s/kubernetes/ 添加到 PATH 變量中
[root@manager107 k8s]# vim /etc/profile
PATH=/k8s/kubernetes/bin:$PATH:$HOME/bin
[root@manager107 k8s]# source /etc/profile
#查看master集羣狀態
[root@manager107 k8s]# kubectl get cs,nodes

十一、部署node 節點

kubernetes node 節點運行以下組件：

docker
kubelet
kube-proxy

kubelet 運行在每一個 worker 節點上，接收 kube-apiserver 發送的請求，管理 Pod 容器，執行交互式命令，如exec、run、logs 等;

kubelet 啓動時自動向 kube-apiserver 註冊節點信息，內置的 cadvisor 統計和監控節點的資源使用狀況;

爲確保安全，本文檔只開啓接收 https 請求的安全端口，對請求進行認證和受權，拒絕未受權的訪問(如apiserver、heapster)。

#將kubelet 二進制文件拷貝至node節點
[root@manager107 bin]# cd /home/workspace/packages/k8s1.13-centos/kubernetes/server/bin
[root@manager107 bin]# scp kubelet kube-proxy 10.0.3.68:/k8s/kubernetes/bin/
[root@manager107 bin]# scp kubelet kube-proxy 10.0.3.80:/k8s/kubernetes/bin/
#新建目錄
[root@manager107 bin]# mkdir /home/workspace/kubelet_bootstrap_config
[root@manager107 bin]# cd /home/workspace/kubelet_bootstrap_config
#建立 kubelet bootstrap kubeconfig 文件
[root@manager107 kubelet_bootstrap_config]# vim environment.sh
# 建立kubelet bootstrapping kubeconfig
BOOTSTRAP_TOKEN=e9ca0f3e1b66c9bef910b47171490c53
KUBE_APISERVER="https://10.0.3.107:6443"
# 設置集羣參數
kubectl config set-cluster kubernetes \
  --certificate-authority=/home/workspace/k8s/ca.pem \
  --embed-certs=true \
  --server=${KUBE_APISERVER} \
  --kubeconfig=bootstrap.kubeconfig

# 設置客戶端認證參數
kubectl config set-credentials kubelet-bootstrap \
  --token=${BOOTSTRAP_TOKEN} \
  --kubeconfig=bootstrap.kubeconfig

# 設置上下文參數
kubectl config set-context default \
  --cluster=kubernetes \
  --user=kubelet-bootstrap \
  --kubeconfig=bootstrap.kubeconfig

# 設置默認上下文
kubectl config use-context default --kubeconfig=bootstrap.kubeconfig



# 建立kube-proxy kubeconfig文件

kubectl config set-cluster kubernetes \
  --certificate-authority=/home/workspace/k8s/ca.pem \
  --embed-certs=true \
  --server=${KUBE_APISERVER} \
  --kubeconfig=kube-proxy.kubeconfig

kubectl config set-credentials kube-proxy \
  --client-certificate=/home/workspace/k8s/kube-proxy.pem \
  --client-key=/home/workspace/k8s/kube-proxy-key.pem \
  --embed-certs=true \
  --kubeconfig=kube-proxy.kubeconfig

kubectl config set-context default \
  --cluster=kubernetes \
  --user=kube-proxy \
  --kubeconfig=kube-proxy.kubeconfig

kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig
[root@manager107 kubelet_bootstrap_config]# sh environment.sh
#將bootstrap kubeconfig kube-proxy.kubeconfig 文件拷貝到全部 nodes節點
[root@manager107 kubelet_bootstrap_config]# cp bootstrap.kubeconfig kube-proxy.kubeconfig /k8s/kubernetes/cfg/
[root@manager107 kubelet_bootstrap_config]# scp bootstrap.kubeconfig kube-proxy.kubeconfig 10.0.3.68:/k8s/kubernetes/cfg/
[root@manager107 kubelet_bootstrap_config]# scp bootstrap.kubeconfig kube-proxy.kubeconfig 10.0.3.80:/k8s/kubernetes/cfg/
#107上建立 kubelet 參數配置文件
[root@manager107 ~]# vim /k8s/kubernetes/cfg/kubelet.config
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 10.0.3.107
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS: ["10.0.0.2"]
clusterDomain: cluster.local.
failSwapOn: false
authentication:
  anonymous:
    enabled: true
#107上建立kubelet配置文件
[root@manager107 ~]# vim /k8s/kubernetes/cfg/kubelet
KUBELET_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.0.3.107 \
--kubeconfig=/k8s/kubernetes/cfg/kubelet.kubeconfig \
--bootstrap-kubeconfig=/k8s/kubernetes/cfg/bootstrap.kubeconfig \
--config=/k8s/kubernetes/cfg/kubelet.config \
--cert-dir=/k8s/kubernetes/ssl \
--pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"
#107上建立kubelet systemd unit 文件
[root@manager107 ~]# vim /usr/lib/systemd/system/kubelet.service
[Unit]
Description=Kubernetes Kubelet
After=docker.service
Requires=docker.service

[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kubelet
ExecStart=/k8s/kubernetes/bin/kubelet $KUBELET_OPTS
Restart=on-failure
KillMode=process

[Install]
WantedBy=multi-user.target
#68上建立 kubelet 參數配置文件：
[root@worker68 ~]# vim /k8s/kubernetes/cfg/kubelet.config
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 10.0.3.68
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS: ["10.0.0.2"]
clusterDomain: cluster.local.
failSwapOn: false
authentication:
  anonymous:
    enabled: true
#68上建立kubelet配置文件
[root@worker68 ~]# vim /k8s/kubernetes/cfg/kubelet
KUBELET_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.0.3.68 \
--kubeconfig=/k8s/kubernetes/cfg/kubelet.kubeconfig \
--bootstrap-kubeconfig=/k8s/kubernetes/cfg/bootstrap.kubeconfig \
--config=/k8s/kubernetes/cfg/kubelet.config \
--cert-dir=/k8s/kubernetes/ssl \
--pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"
#68上建立kubelet systemd unit 文件
[root@worker68 ~]# vim /usr/lib/systemd/system/kubelet.service 
[Unit]
Description=Kubernetes Kubelet
After=docker.service
Requires=docker.service

[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kubelet
ExecStart=/k8s/kubernetes/bin/kubelet $KUBELET_OPTS
Restart=on-failure
KillMode=process

[Install]
WantedBy=multi-user.target
#80上建立 kubelet 參數配置文件
[root@worker80 ~]# vim /k8s/kubernetes/cfg/kubelet.config
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
address: 10.0.3.80
port: 10250
readOnlyPort: 10255
cgroupDriver: cgroupfs
clusterDNS: ["10.0.0.2"]
clusterDomain: cluster.local.
failSwapOn: false
authentication:
  anonymous:
    enabled: true
#80上建立kubelet配置文件
[root@worker80 ~]# vim /k8s/kubernetes/cfg/kubelet
KUBELET_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.0.3.80 \
--kubeconfig=/k8s/kubernetes/cfg/kubelet.kubeconfig \
--bootstrap-kubeconfig=/k8s/kubernetes/cfg/bootstrap.kubeconfig \
--config=/k8s/kubernetes/cfg/kubelet.config \
--cert-dir=/k8s/kubernetes/ssl \
--pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/google-containers/pause-amd64:3.0"
#80上建立kubelet systemd unit 文件
[root@worker80 ~]# vim /usr/lib/systemd/system/kubelet.service 
[Unit]
Description=Kubernetes Kubelet
After=docker.service
Requires=docker.service

[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kubelet
ExecStart=/k8s/kubernetes/bin/kubelet $KUBELET_OPTS
Restart=on-failure
KillMode=process

[Install]
WantedBy=multi-user.target
#將kubelet-bootstrap用戶綁定到系統集羣角色
[root@manager107 ~]# kubectl create clusterrolebinding kubelet-bootstrap \
--clusterrole=system:node-bootstrapper \
--user=kubelet-bootstrap
#107上啓動服務
[root@manager107 ~]# systemctl daemon-reload
[root@manager107 ~]# systemctl enable kubelet
[root@manager107 ~]# systemctl start kubelet
#68上啓動服務
[root@worker68 ~]# systemctl daemon-reload
[root@worker68 ~]# systemctl enable kubelet
[root@worker68 ~]# systemctl start kubelet
#80上啓動服務
[root@worker80 ~]# systemctl daemon-reload
[root@worker80 ~]# systemctl enable kubelet
[root@worker80 ~]# systemctl start kubelet

kubelet 首次啓動時向 kube-apiserver 發送證書籤名請求，必須經過後 kubernetes 系統纔會將該 Node 加入到集羣。

#查看未受權的CSR請求
[root@manager107 ~]# kubectl get csr
#經過CSR請求
[root@manager107 ~]# kubectl certificate approve 節點名

#查看集羣狀態
[root@manager107 ~]# kubectl get nodes
NAME              STATUS     ROLES     AGE      VERSION
node/10.0.3.107   Ready      master    20h      v1.13.0
node/10.0.3.68    Ready      node      20h      v1.13.0
node/10.0.3.80    Ready      node      20h      v1.13.0

#部署 kube-proxy 組件
#kube-proxy 運行在全部 node節點上，它監聽 apiserver 中 service 和 Endpoint 的變化狀況，建立路由規則來進行服務負載均衡。
#107上建立 kube-proxy 配置文件
[root@manager107 ~]# vim /k8s/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.0.3.107 \
--cluster-cidr=10.0.0.0/24 \
--kubeconfig=/k8s/kubernetes/cfg/kube-proxy.kubeconfig"
#107上建立kube-proxy systemd unit 文件
[root@manager107 ~]# vim /usr/lib/systemd/system/kube-proxy.service 
[Unit]
Description=Kubernetes Proxy
After=network.target

[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kube-proxy
ExecStart=/k8s/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
#68上建立 kube-proxy 配置文件
[root@worker68 ~]# vim /k8s/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.0.3.68 \
--cluster-cidr=10.0.0.0/24 \
--kubeconfig=/k8s/kubernetes/cfg/kube-proxy.kubeconfig"
#68上建立kube-proxy systemd unit 文件
[root@worker68 ~]# vim /usr/lib/systemd/system/kube-proxy.service 
[Unit]
Description=Kubernetes Proxy
After=network.target

[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kube-proxy
ExecStart=/k8s/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
#80上建立 kube-proxy 配置文件
[root@worker80 ~]# vim /k8s/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=10.0.3.80 \
--cluster-cidr=10.0.0.0/24 \
--kubeconfig=/k8s/kubernetes/cfg/kube-proxy.kubeconfig"
#80上建立kube-proxy systemd unit 文件
[root@worker80 ~]# vim /usr/lib/systemd/system/kube-proxy.service
[Unit]
Description=Kubernetes Proxy
After=network.target

[Service]
EnvironmentFile=/k8s/kubernetes/cfg/kube-proxy
ExecStart=/k8s/kubernetes/bin/kube-proxy $KUBE_PROXY_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
#107上啓動服務
[root@manager107 ~]# systemctl daemon-reload
[root@manager107 ~]# systemctl enable kube-proxy
[root@manager107 ~]# systemctl start kube-proxy
#68上啓動服務
[root@worker68 ~]# systemctl daemon-reload
[root@worker68 ~]# systemctl enable kube-proxy
[root@worker68 ~]# systemctl start kube-proxy
#80上啓動服務
[root@worker80 ~]# systemctl daemon-reload
[root@worker80 ~]# systemctl enable kube-proxy
[root@worker80 ~]# systemctl start kube-proxy

#給node和master節點打標籤
[root@manager107 ~]# kubectl label node 10.0.3.107  node-role.kubernetes.io/master='master'
[root@manager107 ~]# kubectl label node 10.0.3.68  node-role.kubernetes.io/node='node'
[root@manager107 ~]# kubectl label node 10.0.3.80  node-role.kubernetes.io/node='node'

#查看集羣狀態
[root@manager107 ~]# kubectl get node,cs
NAME              STATUS   ROLES    AGE   VERSION
node/10.0.3.107   Ready    master   21h   v1.13.0
node/10.0.3.68    Ready    node     21h   v1.13.0
node/10.0.3.80    Ready    node     21h   v1.13.0

NAME                                 STATUS    MESSAGE             ERROR
componentstatus/scheduler            Healthy   ok
componentstatus/controller-manager   Healthy   ok
componentstatus/etcd-1               Healthy   {"health":"true"}
componentstatus/etcd-0               Healthy   {"health":"true"}
componentstatus/etcd-2               Healthy   {"health":"true"}