[root@k8s-master ssl]# pwd

/usr/local/src/ssl

[root@k8s-master ssl]# vim flanneld-csr.json

{

  "CN": "flanneld",

  "hosts": [],

  "key": {

    "algo": "rsa",

    "size":

  },

  "names": [

    {

      "C": "CN",

      "ST": "BeiJing",

      "L": "BeiJing",

      "O": "k8s",

      "OU": "System"

    }

  ]

}

[root@k8s-master ssl]# cfssl gencert -ca=/opt/kubernetes/ssl/ca.pem \

>    -ca-key=/opt/kubernetes/ssl/ca-key.pem \

>    -config=/opt/kubernetes/ssl/ca-config.json \

>    -profile=kubernetes flanneld-csr.json | cfssljson -bare flanneld

[root@k8s-master ssl]# cp flanneld*.pem /opt/kubernetes/ssl/

[root@k8s-master ssl]# scp flanneld*.pem 10.0.3.226:/opt/kubernetes/ssl/

[root@k8s-master ssl]# scp flanneld*.pem 10.0.3.227:/opt/kubernetes/ssl/

[root@k8s-master ssl]# cd /usr/local/src

[root@k8s-master src]# tar zxf flannel-v0.10.0-linux-amd64.tar.gz

[root@k8s-master src]# cp flanneld mk-docker-opts.sh /opt/kubernetes/bin/
#复制到Node节点

[root@k8s-master src]# scp flanneld mk-docker-opts.sh 10.0.3.226:/opt/kubernetes/bin/

[root@k8s-master src]# scp flanneld mk-docker-opts.sh 10.0.3.227:/opt/kubernetes/bin/         

 #复制对应脚本到/opt/kubernetes/bin下

[root@k8s-master src]# cd /usr/local/src/kubernetes/cluster/centos/node/bin/

[root@k8s-master bin]# cp remove-docker0.sh /opt/kubernetes/bin/

[root@k8s-master bin]# scp remove-docker0.sh 192.168.56.12:/opt/kubernetes/bin/

^C[root@k8s-master bin]# scp remove-docker0.sh 10.0.3.226:/opt/kubernetes/bin/

[root@k8s-master bin]# scp remove-docker0.sh 10.0.3.227:/opt/kubernetes/bin/

下载地址：

# wget　https://github.com/coreos/flannel/releases/download/v0.10.0/flannel-v0.10.0-linux-amd64.tar.gz

[root@k8s-master bin]# vim /opt/kubernetes/cfg/flannel

FLANNEL_ETCD="-etcd-endpoints=https://10.0.3.225:2379,https://10.0.3.226:2379,https://10.0.3.227:2379"

FLANNEL_ETCD_KEY="-etcd-prefix=/kubernetes/network"

FLANNEL_ETCD_CAFILE="--etcd-cafile=/opt/kubernetes/ssl/ca.pem"

FLANNEL_ETCD_CERTFILE="--etcd-certfile=/opt/kubernetes/ssl/flanneld.pem"

FLANNEL_ETCD_KEYFILE="--etcd-keyfile=/opt/kubernetes/ssl/flanneld-key.pem"

复制配置到其它节点上

[root@linux-node1 ~]# scp /opt/kubernetes/cfg/flannel 10.0.3.226:/opt/kubernetes/cfg/

[root@linux-node1 ~]# scp /opt/kubernetes/cfg/flannel 10.0.3.227:/opt/kubernetes/cfg/

[root@linux-node1 ~]# vim /usr/lib/systemd/system/flannel.service

[Unit]

Description=Flanneld overlay address etcd agent

After=network.target

Before=docker.service

[Service]

EnvironmentFile=-/opt/kubernetes/cfg/flannel

ExecStartPre=/opt/kubernetes/bin/remove-docker0.sh

ExecStart=/opt/kubernetes/bin/flanneld ${FLANNEL_ETCD} ${FLANNEL_ETCD_KEY} ${FLANNEL_ETCD_CAFILE} ${FLANNEL_ETCD_CERTFILE} ${FLANNEL_ETCD_KEYFILE}

ExecStartPost=/opt/kubernetes/bin/mk-docker-opts.sh -d /run/flannel/docker

Type=notify

[Install]

WantedBy=multi-user.target

RequiredBy=docker.service

复制系统服务脚本到其它节点上

# scp /usr/lib/systemd/system/flannel.service 10.0.3.226:/usr/lib/systemd/system/

# scp /usr/lib/systemd/system/flannel.service 10.0.3.227:/usr/lib/systemd/system/

下载地址：https://github.com/containernetworking/plugins/releases

wget https://github.com/containernetworking/plugins/releases/download/v0.7.1/cni-plugins-amd64-v0.7.1.tgz

[root@linux-node1 ~]# mkdir /opt/kubernetes/bin/cni

[root@linux-node1 src]# tar zxf cni-plugins-amd64-v0.7.1.tgz -C /opt/kubernetes/bin/cni

# scp -r /opt/kubernetes/bin/cni/* 10.0.3.226:/opt/kubernetes/bin/cni/

# scp -r /opt/kubernetes/bin/cni/* 10.0.3.227:/opt/kubernetes/bin/cni/

/opt/kubernetes/bin/etcdctl --ca-file /opt/kubernetes/ssl/ca.pem --cert-file /opt/kubernetes/ssl/flanneld.pem --key-file /opt/kubernetes/ssl/flanneld-key.pem \

      --no-sync -C https://10.0.3.225:2379,https://10.0.3.226:2379,https://10.0.3.227:2379 \

mk /kubernetes/network/config '{ "Network": "10.2.0.0/16", "Backend": { "Type": "vxlan", "VNI": 1 }}' >/dev/null >&

[root@k8s-master src]# systemctl daemon-reload

[root@k8s-master src]# systemctl enable flannel

[root@k8s-master src]# chmod +x /opt/kubernetes/bin/*

[root@k8s-master src]# systemctl start flannel

[root@k8s-master src]# systemctl status flannel

[root@k8s-mastrt ~]# vim /usr/lib/systemd/system/docker.service

[Unit] #在Unit下面修改After和增加Requires

After=network-online.target firewalld.service flannel.service

Wants=network-online.target

Requires=flannel.service

[Service] #增加EnvironmentFile=-/run/flannel/docker

Type=notify

EnvironmentFile=-/run/flannel/docker

ExecStart=/usr/bin/dockerd $DOCKER_OPTS

# scp /usr/lib/systemd/system/docker.service 10.0.3.226:/usr/lib/systemd/system/

# scp /usr/lib/systemd/system/docker.service 10.0.3.227:/usr/lib/systemd/system/

[root@k8s-master ~]# systemctl daemon-reload

[root@k8s-master ~]# systemctl restart docker