部署Flannel网络

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部署Flannel网络

部署flannel网络需要执行以下步骤:

1)写入分配的子网段到etcd,供flanneld使用

2)下载二进制包

3)配置Flannel

4)systemd管理Flannel

5)配置Docker启动指定子网段

6)启动

第一步:下载flannel二进制包

wget https://github.com/coreos/flannel/releases/download/v0.9.1/flannel-v0.9.1-linux-amd64.tar.gz

第二步:解压flannel二进制包并且复制到其他节点

//解压二进制文件

tar -zxvf flannel-v0.9.1-linux-amd64.tar.gz

//将可执行文件flanneld mk-docker-opts.sh复制发送到其他节点

scp flanneld mk-docker-opts.sh root@172.16.163.130:/opt/kubernetes/bin/

第三步:写入分配的子网段到etcd,供flanneld使用

/opt/kubernetes/bin/etcdctl \

--ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem \

--endpoints="https://172.16.163.131:2379,https://172.16.163.130:2379,https://172.16.163.129:2379" \

set /coreos.com/network/config '{ "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}'

第四步:编写flanneld配置文件

NNEL_OPTIONS="--etcd-endpoints=https://172.16.163.131:2379,https://172.16.163.130:2379,https://172.16.163.129:2379 -etcd-cafile=/opt/kubernetes/ssl/ca.pem -etcd-certfile=/opt/kubernetes/ssl/server.pem -etcd-keyfile=/opt/kubernetes/ssl/server-key.pem"

第五步:编写flanneld.service配置文件

[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

第六步:docker.service配置文件

[Unit]

Description=Docker Application Container Engine

Documentation=https://docs.docker.com

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

Wants=network-online.target

[Service]

Type=notify

EnvironmentFile=/run/flannel/subnet.env

ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS

ExecReload=/bin/kill -s HUP $MAINPID

LimitNOFILE=infinity

LimitNPROC=infinity

LimitCORE=infinity

TimeoutStartSec=0

Delegate=yes

KillMode=process

Restart=on-failure

StartLimitBurst=3

StartLimitInterval=60s

[Install]

WantedBy=multi-user.target

以上配置好了之后,需要将flanneld配置文件,flanneld.service文件,docker.service文件,复制到其他节点。

第七步:启动服务

systemctl daemon-reload

systemctl start flanneld

systemctl enable flanneld

systemctl restart docker

最后配置结果截图

以上是 部署Flannel网络 的全部内容, 来源链接: utcz.com/z/509976.html

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