Shulou(Shulou.com)06/02 Report--

Etcd installation

Cluster mode is recommended in production environment.

Wget https://github.com/etcd-io/etcd/releases/download/v3.3.15/etcd-v3.3.15-linux-amd64.tar.gztar-zxvf etcd-v3.3.15-linux-amd64.tar.gz & & cd etcd-v3.3.15-linux-amd64mv etcd* / usr/local/bin/mkdir / var/lib/etcd/

Cat / usr/lib/systemd/system/etcd.service [Unit] Description=Etcd ServerAfter=netNork.targetAfter=network-online.targetWants=network- online.target [service] Type=notifyExecStart=/usr/local/bin/etcd\-name=etcd\-- data-dir=/var/lib/etcd/default.etcd\-- listen-peer-urls= http://192.168.3.155:2380\-- listen-client-urls= http://192.168.3.155:2379, Http://127.0.0.1:2379\-- advertise-client-urls= http://192.168.3.155:2379\-- initial-advertise-peer-urls= http://192.168.3.155:2380\-- initial-cluster=etcd= http://192.168.3.155:2380\-- initial-cluster-token=etcd-cluster\-- initial-cluster-state=newRestart=on-failureLimitNOFILE=65536 [Install] WantedBy=multi-user.target

Systemctl start etcd

Install flannel

Yum-y install flannel

Cat / etc/sysconfig/flanneld

FLANNEL_ETCD_ENDPOINTS= "http://192.168.3.155:2379"

FLANNEL_ETCD_PREFIX= "/ atomic.io/network"

Register the network configuration of flannel to etcd

The default api for version 3.3.15 is V3 flags. Support for V2 version.

ETCDCTL_API=2 etcdctl-- endpoint= http://192.168.3.155:2379 set / atomic.io/network/config'{"Network": "172.17.0.0 Network", "SubnetMin": "172.17.1.0", "SubnetMax": "172.17.254.0", "Backend": {"Type": "vxlan"}'

Systemctl start flannel

After Flannel starts, the network configuration information will be obtained from etcd

Subnetting and registering in etcd

Write the network configuration to / run/flannel/subnet.env and generate the / run/flannel/docker file through script

View etcd registration information

Modify docker startup parameters

Cat / usr/lib/systemd/system/docker.service

EnvironmentFile=/var/run/flannel/docker

ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS

Systemctl daemon-reload & & systemctl restart docker

View IP

Reference:

Https://coreos.com/flannel/docs/latest/running.html#docker-integration

Https://coreos.com/flannel/docs/latest/flannel-config.html

Https://github.com/etcd-io/etcd

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