二进制部署K8S单节点
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Kubernetes集群部署
环境规划
Master:192.168.30.7/24 kube-apiserver kube-controller-manager kube-scheduler etcd
Node01:192.168.30.8/24 kubelet kube-proxy docker flannel etcd
Node02:192.168.30.9/24 kubelet kube-proxy docker flannel etcd
一、ETCD数据库集群部署
1.安装cfssl证书生成工具
[root@master ~]# curl -L https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -o /usr/local/bin/cfssl
[root@master ~]# curl -L https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -o /usr/local/bin/cfssljson
[root@master ~]# curl -L https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -o /usr/local/bin/cfssl-certinfo
[root@master bin]# chmod +x *
[root@master bin]# ll
总用量 18808
-rwxr-xr-x 1 root root 10376657 1月 16 2020 cfssl
-rwxr-xr-x 1 root root 6595195 1月 16 2020 cfssl-certinfo
-rwxr-xr-x 1 root root 2277873 1月 16 2020 cfssljson
2.生成证书
[root@master etcd-cert]# pwd
/root/k8s/etcd-cert
[root@master etcd-cert]# cat etcd-cert.sh //生成证书的脚本
cat > ca-config.json <<EOF //定义ca证书配置文件
"signing": //键名称
"default":
"expiry": "87600h" //证书有效期（10年）
,
"profiles": //简介
"www": //名称
"expiry": "87600h",
"usages": [ //使用方法
"signing", //键
"key encipherment", //密钥验证
"server auth", //服务器端验证
"client auth" //客户端验证
]
EOF
cat > ca-csr.json <<EOF //定义证书签名文件
"CN": "etcd CA", //CA签名为etcd指定
"key":
"algo": "rsa", //使用rsa非对称密钥的形式
"size": 2048 //密钥长度为2048
,
"names": [ //在证书中定义信息
"C": "CN",
"L": "Beijing",
"ST": "Beijing"
]
EOF
cfssl gencert -initca ca-csr.json | cfssljson -bare ca - //生成证书，生成ca-key.pem 和ca.pem
cat > server-csr.json <<EOF //定义服务器端签名证件
"CN": "etcd",
"hosts": [ //定义节点的IP地址
"192.168.30.7",
"192.168.30.8",
"192.168.30.9"
],
"key":
"algo": "rsa",
"size": 2048
,
"names": [
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
]
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server //根据服务器端签名文件生成证书
[root@master etcd-cert]# bash etcd-cert.sh
2021/09/26 22:19:25 [INFO] generating a new CA key and certificate from CSR
2021/09/26 22:19:25 [INFO] generate received request
2021/09/26 22:19:25 [INFO] received CSR
2021/09/26 22:19:25 [INFO] generating key: rsa-2048
2021/09/26 22:19:25 [INFO] encoded CSR
2021/09/26 22:19:25 [INFO] signed certificate with serial number 208309645292718926890373407855697935641908855232
2021/09/26 22:19:25 [INFO] generate received request
2021/09/26 22:19:25 [INFO] received CSR
2021/09/26 22:19:25 [INFO] generating key: rsa-2048
2021/09/26 22:19:25 [INFO] encoded CSR
2021/09/26 22:19:25 [INFO] signed certificate with serial number 493577706729989292028890461217837542719628512047
2021/09/26 22:19:25 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").
[root@master etcd-cert]# ls //*.pem就是我们要的证书
ca-config.json ca-csr.json ca.pem server.csr server-key.pem
ca.csr ca-key.pem etcd-cert.sh server-csr.json server.pem
[root@master etcd-cert]#
3.etcd部署
3.1 创建对应目录，拷贝相应文件
[root@master k8s]# mkdir /opt/etcd/cfg,bin,ssl -p //创建配置文件、命令文件、证书
[root@master k8s]# mv etcd-v3.3.10-linux-amd64/etcd etcd-v3.3.10-linux-amd64/etcdctl /opt/etcd/bin/ //拷贝命令文件至相应目录
[root@master k8s]# cp etcd-cert/*.pem /opt/etcd/ssl/ //拷贝证书文件至相应目录
3.2 查看启动脚本
[root@master k8s]# cat etcd.sh //查看脚本文件
#!/bin/bash
#以下为使用格式：etcd名称 当前etcd的IP地址+完整的集群名称和地址
# example: ./etcd.sh etcd01 192.168.1.10 etcd02=https://192.168.1.11:2380,etcd03=https://192.168.1.12:2380
ETCD_NAME=$1 //位置变量1：etcd节点名称
ETCD_IP=$2 //位置变量2：节点地址
ETCD_CLUSTER=$3 //位置变量3：集群
WORK_DIR=/opt/etcd //指定工作目录
cat <<EOF >$WORK_DIR/cfg/etcd //在指定工作目录创建ETCD的配置文件
#[Member]
ETCD_NAME="$ETCD_NAME" //etcd名称
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://$ETCD_IP:2380" //etcd IP地址：2380端口。用于集群之间通讯
ETCD_LISTEN_CLIENT_URLS="https://$ETCD_IP:2379" //etcd IP地址：2379端口，用于开放给外部客户端通讯
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://$ETCD_IP:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://$ETCD_IP:2379" //对外提供的url使用https的协议进行访问
ETCD_INITIAL_CLUSTER="etcd01=https://$ETCD_IP:2380,$ETCD_CLUSTER" //多路访问
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" //tokens 令牌环名称：etcd-cluster
ETCD_INITIAL_CLUSTER_STATE="new" //状态，重新创建
EOF
cat <<EOF >/usr/lib/systemd/system/etcd.service //定义ectd的启动脚本
[Unit] //基本项
Description=Etcd Server //类似为 etcd 服务
After=network.target
After=network-online.target
Wants=network-online.target
[Service] //服务项
Type=notify
EnvironmentFile=$WORK_DIR/cfg/etcd //etcd文件位置
ExecStart=$WORK_DIR/bin/etcd \\ //准启动状态及以下的参数
--name=\\$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 \\ //以下为群集内部的设定
--initial-advertise-peer-urls=\\$ETCD_INITIAL_ADVERTISE_PEER_URLS \\
--initial-cluster=\\$ETCD_INITIAL_CLUSTER \\
--initial-cluster-token=\\$ETCD_INITIAL_CLUSTER_TOKEN \\ //群集内部通信，也是使用的令牌，为了保证安全（防范中间人窃取）
--initial-cluster-state=new \\
--cert-file=$WORK_DIR/ssl/server.pem \\ //证书相关参数
--key-file=$WORK_DIR/ssl/server-key.pem \\
--peer-cert-file=$WORK_DIR/ssl/server.pem \\
--peer-key-file=$WORK_DIR/ssl/server-key.pem \\
--trusted-ca-file=$WORK_DIR/ssl/ca.pem \\
--peer-trusted-ca-file=$WORK_DIR/ssl/ca.pem
Restart=on-failure
LimitNOFILE=65536 //开放最多的端口号
[Install]
WantedBy=multi-user.target //进行启动
EOF
systemctl daemon-reload //参数重载
systemctl enable etcd
systemctl restart etcd
3.3 执行脚本等待节点加入
[root@master k8s]# bash etcd.sh etcd01 192.168.30.7 etcd02=https://192.168.30.8:2380,etcd03=https://192.168.30.9:2380 //执行脚本，等待其他节点加入（生成启动脚本）
Created symlink from /etc/systemd/system/multi-user.target.wants/etcd.service to /usr/lib/systemd/system/etcd.service.
Job for etcd.service failed because the control process exited with error code. See "systemctl status etcd.service" and "journalctl -xe" for details.
[root@master k8s]# ls /opt/etcd/cfg/
etcd
[root@master k8s]# cat /opt/etcd/cfg/etcd //查看生成的配置文件
#[Member]
ETCD_NAME="etcd01"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.30.7:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.30.7:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.30.7:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.30.7:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://192.168.30.7:2380,etcd02=https://192.168.30.8:2380,etcd03=https://192.168.30.9:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
[root@master k8s]#
3.4 将文件拷贝到其他节点，并修改配置文件
[root@master k8s]# scp -r /opt/etcd/ root@192.168.30.8:/opt/ //拷贝文件到节点
root@192.168.30.8's password:
etcd 100% 502 579.4KB/s 00:00
etcd 100% 18MB 45.4MB/s 00:00
etcdctl 100% 15MB 109.5MB/s 00:00
ca-key.pem 100% 1679 1.3MB/s 00:00
ca.pem 100% 1265 419.6KB/s 00:00
server-key.pem 100% 1679 1.5MB/s 00:00
server.pem 100% 1338 422.4KB/s 00:00
[root@master k8s]# scp -r /opt/etcd/ root@192.168.30.9:/opt/
root@192.168.30.9's password:
etcd 100% 502 584.3KB/s 00:00
etcd 100% 18MB 61.2MB/s 00:00
etcdctl 100% 15MB 113.6MB/s 00:00
ca-key.pem 100% 1679 1.1MB/s 00:00
ca.pem 100% 1265 448.8KB/s 00:00
server-key.pem 100% 1679 1.2MB/s 00:00
server.pem 100% 1338 643.7KB/s 00:00
[root@master k8s]#
[root@node1 ~]# vim /opt/etcd/cfg/etcd
[root@node1 ~]# cat /opt/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd02"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.30.8:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.30.8:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.30.8:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.30.8:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://192.168.30.7:2380,etcd02=https://192.168.30.8:2380,etcd03=https://192.168.30.9:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
[root@node1 ~]# systemctl start etcd
[root@node2 ~]# vim /opt/etcd/cfg/etcd
[root@node2 ~]# cat /opt/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd03"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.30.9:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.30.9:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.30.9:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.30.9:2379"
ETCD_INITIAL_CLUSTER="etcd01=https://192.168.30.7:2380,etcd02=https://192.168.30.8:2380,etcd03=https://192.168.30.9:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
[root@node2 ~]# systemctl start etcd
3.5 启动etcd，查看集群状态
[root@master k8s]# bash etcd.sh etcd01 192.168.30.7 etcd02=https://192.168.30.8:2380,etcd03=https://192.168.30.9:2380
[root@master k8s]# cd etcd-cert/
[root@master etcd-cert]# /opt/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.30.7:2379,https://192.168.30.8:2379,https://192.168.30.9:2379" cluster-health
member f05d004bd02940f is healthy: got healthy result from https://192.168.30.7:2379
member 85d13a9cc78ad7df is healthy: got healthy result from https://192.168.30.9:2379
member c9b6b0b860128c0f is healthy: got healthy result from https://192.168.30.8:2379
cluster is healthy
[root@master etcd-cert]#
二、Node部署docker
1.所有node部署docker
[root@node1 ~]# yum install -y yum-utils device-mapper-persistent-data lvm2
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
软件包 yum-utils-1.1.31-54.el7_8.noarch 已安装并且是最新版本
软件包 device-mapper-persistent-data-0.8.5-3.el7_9.2.x86_64 已安装并且是最新版本
软件包 7:lvm2-2.02.187-6.el7_9.5.x86_64 已安装并且是最新版本
无须任何处理
[root@node1 ~]# cd /etc/yum.repos.d/
[root@node1 yum.repos.d]# yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
已加载插件：fastestmirror, langpacks
adding repo from: https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
2.镜像加速
[root@localhost ~]# sudo mkdir -p /etc/docker
[root@localhost ~]# sudo tee /etc/docker/daemon.json <<-'EOF'
>
> "registry-mirrors": ["https://xxxxxx.mirror.aliyuncs.com"]
>
> EOF
[root@localhost ~]# sudo systemctl daemon-reload
[root@localhost ~]# sudo systemctl restart docker
[root@localhost ~]# cat /etc/docker/daemon.json
"registry-mirrors": ["https://xxxxxx.mirror.aliyuncs.com"]
三、Flannel容器集群网络部署
1.写入分配的子网段到etcd中，供flanel使用
[root@master etcd-cert]# /opt/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.30.7:2379,https://192.168.30.8:2379,https://192.168.30.9:2379" set /coreos.com/network/config ' "Network": "172.17.0.0/16", "Backend": "Type": "vxlan"'
"Network": "172.17.0.0/16", "Backend": "Type": "vxlan"
[root@master etcd-cert]# /opt/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.30.7:2379,https://192.168.30.8:2379,https://192.168.30.9:2379" get /coreos.com/network/config //查看写入的信息
"Network": "172.17.0.0/16", "Backend": "Type": "vxlan"
[root@master etcd-cert]#
2.拷贝flannel包到node节点
[root@master k8s]# scp flannel-v0.10.0-linux-amd64.tar.gz root@192.168.30.8:/root
root@192.168.30.8's password:
flannel-v0.10.0-linux-amd64.tar.gz 100% 9479KB 102.0MB/s 00:00
[root@master k8s]# scp flannel-v0.10.0-linux-amd64.tar.gz root@192.168.30.9:/root
root@192.168.30.9's password:
flannel-v0.10.0-linux-amd64.tar.gz 100% 9479KB 43.6MB/s 00:00
[root@master k8s]#
[root@node1 ~]# tar xf flannel-v0.10.0-linux-amd64.tar.gz //解压传入的文件
[root@node1 ~]# mkdir /opt/kubernetes/cfg,bin,ssl -p //创建k8s工作目录
[root@node1 ~]# mv mk-docker-opts.sh flanneld /opt/kubernetes/bin/ //将文件移动到相应目录
3.配置文件和启动脚本
[root@node1 ~]# cat /opt/kubernetes/cfg/flanneld //配置文件
FLANNEL_OPTIONS="--etcd-endpoints=https://192.168.30.7:2379,https://192.168.30.8:2379,https://192.168.30.9:2379 -etcd-cafile=/opt/etcd/ssl/ca.pem -etcd-certfile=/opt/etcd/ssl/server.pem -etcd-keyfile=/opt/etcd/ssl/server-key.pem"
[root@node1 ~]# cat /usr/lib/systemd/system/flanneld.service //启动脚本
[Unit]
Description=Flanneld overlay address etcd agent
After=network-online.target network.target
Before=docker.service
[Service]
Type=notify
EnvironmentFile=/opt/kubernetes/cfg/flanneld
ExecStart=/opt/kubernetes/bin/flanneld --ip-masq $FLANNEL_OPTIONS
ExecStartPost=/opt/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env
Restart=on-failure
[Install]
WantedBy=multi-user.target
[root@node1 ~]#
4.启动flannel
[root@node1 cfg]# systemctl start flanneld
[root@node1 cfg]# systemctl daemon-reload
[root@node1 cfg]# systemctl enable flanneld
[root@node1 cfg]# systemctl restart flanneld
5.配置docker连接flannel
[root@node1 cfg]# vim /usr/lib/systemd/system/docker.service
[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 $DOCKER_NETWORK_OPTIONS -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
6.重启docker
[root@node1 cfg]# cat /run/flannel/subnet.env
DOCKER_OPT_BIP="--bip=172.17.66.1/24"
DOCKER_OPT_IPMASQ="--ip-masq=false"
DOCKER_OPT_MTU="--mtu=1450"
DOCKER_NETWORK_OPTIONS=" --bip=172.17.66.1/24 --ip-masq=false --mtu=1450"
[root@node1 cfg]# systemctl daemon-reload
[root@node1 cfg]# systemctl restart docker
[root@node1 cfg]#
7.查看flannel网络
[root@node1 cfg]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:8c:7d:09 brd ff:ff:ff:ff:ff:ff
inet 192.168.30.8/24 brd 192.168.30.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe8c:7d09/64 scope link
valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:fb:7f:18 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:fb:7f:18 brd ff:ff:ff:ff:ff:ff
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:c2:de:67:7a brd ff:ff:ff:ff:ff:ff
inet 172.17.66.1/24 brd 172.17.66.255 scope global docker0
valid_lft forever preferred_lft forever
6: flannel.1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UNKNOWN group default
link/ether 2a:43:50:e5:70:14 brd ff:ff:ff:ff:ff:ff
inet 172.17.66.0/32 scope global flannel.1
valid_lft forever preferred_lft forever
inet6 fe80::2843:50ff:fee5:7014/64 scope link
valid_lft forever preferred_lft forever
[root@node1 cfg]# ping 172.17.64.1
PING 172.17.64.1 (172.17.64.1) 56(84) bytes of data.
64 bytes from 172.17.64.1: icmp_seq=1 ttl=64 time=0.669 ms
64 bytes from 172.17.64.1: icmp_seq=2 ttl=64 time=0.451 ms
^C
--- 172.17.64.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.451/0.560/0.669/0.109 ms
[root@node1 cfg]#
[root@node2 cfg]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:0c:53:27 brd ff:ff:ff:ff:ff:ff
inet 192.168.30.9/24 brd 192.168.30.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe0c:5327/64 scope link
valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:1b:0e:bb brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:1b:0e:bb brd ff:ff:ff:ff:ff:ff
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:e1:90:dc:0b brd ff:ff:ff:ff:ff:ff
inet 172.17.64.1/24 brd 172.17.64.255 scope global docker0
valid_lft forever preferred_lft forever
6: flannel.1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UNKNOWN group default
link/ether d2:11:41:cb:c5:55 brd ff:ff:ff:ff:ff:ff
inet 172.17.64.0/32 scope global flannel.1
valid_lft forever preferred_lft forever
inet6 fe80::d011:41ff:fecb:c555/64 scope link
valid_lft forever preferred_lft forever
[root@node2 cfg]# ping 172.17.66.1
PING 172.17.66.1 (172.17.66.1) 56(84) bytes of data.
64 bytes from 172.17.66.1: icmp_seq=1 ttl=64 time=0.366 ms
64 bytes from 172.17.66.1: icmp_seq=2 ttl=64 time=0.464 ms
^C
--- 172.17.66.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.366/0.415/0.464/0.049 ms
[root@node2 cfg]#
四、部署Master组件
1.生成k8s证书
[root@master k8s-cert]# cat k8s-cert.sh
cat > ca-config.json <<EOF
"signing":
"default":
"expiry": "87600h"
,
"profiles":
"kubernetes":
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
EOF
cat > ca-csr.json <<EOF
"CN": "kubernetes",
"key":
"algo": "rsa",
"size": 2048
,
"names": [
"C": "CN",
"L": "Beijing",
"ST": "Beijing",
"O": "k8s",
"OU": "System"
]
EOF
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
#-----------------------
cat > server-csr.json <<EOF
"CN": "kubernetes",
"hosts": [
"10.0.0.1",
"127.0.0.1",
"192.168.30.7",
"kubernetes",
"kubernetes.default",
"kubernetes.default.svc",
"kubernetes.default.svc.cluster",
"kubernetes.default.svc.cluster.local"
],
"key":
"algo": "rsa",
"size": 2048
,
"names": [
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
]
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes server-csr.json | cfssljson -bare server
#-----------------------
cat > admin-csr.json <<EOF
"CN": "admin",
"hosts": [],
"key":
"algo": "rsa",
"size": 2048
,
"names": [
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "system:masters",
"OU": "System"
]
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes admin-csr.json | cfssljson -bare admin
#-----------------------
cat > kube-proxy-csr.json <<EOF
"CN": "system:kube-proxy",
"hosts": [],
"key":
"algo": "rsa",
"size": 2048
,
"names": [
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing",
"O": "k8s",
"OU": "System"
]
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes kube-proxy-csr.json | cfssljson -bare kube-proxy
[root@master k8s-cert]# bash k8s-cert.sh
2021/09/27 00:08:22 [INFO] generating a new CA key and certificate from CSR
2021/09/27 00:08:22 [INFO] generate received request
2021/09/27 00:08:22 [INFO] received CSR
2021/09/27 00:08:22 [INFO] generating key: rsa-2048
2021/09/27 00:08:22 [INFO] encoded CSR
2021/09/27 00:08:22 [INFO] signed certificate with serial number 478360010460524378597942783674963208253320007077
2021/09/27 00:08:22 [INFO] generate received request
2021/09/27 00:08:22 [INFO] received CSR
2021/09/27 00:08:22 [INFO] generating key: rsa-2048
2021/09/27 00:08:22 [INFO] encoded CSR
2021/09/27 00:08:22 [INFO] signed certificate with serial number 386202515578783260209642708627500626972309043182
2021/09/27 00:08:22 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").
2021/09/27 00:08:22 [INFO] generate received request
2021/09/27 00:08:22 [INFO] received CSR
2021/09/27 00:08:22 [INFO] generating key: rsa-2048
2021/09/27 00:08:22 [INFO] encoded CSR
2021/09/27 00:08:23 [INFO] signed certificate with serial number 590076051492728149633684308998359216491752482167
2021/09/27 00:08:23 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").
2021/09/27 00:08:23 [INFO] generate received request
2021/09/27 00:08:23 [INFO] received CSR
2021/09/27 00:08:23 [INFO] generating key: rsa-2048
2021/09/27 00:08:23 [INFO] encoded CSR
2021/09/27 00:08:23 [INFO] signed certificate with serial number 367870846720115626064994072225779099959546576157
2021/09/27 00:08以上是关于二进制部署K8S单节点的主要内容，如果未能解决你的问题，请参考以下文章
K8S——单master节点和基于单master节点的双master节点二进制部署（本机实验，防止卡顿，所以多master就不做3台了）