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This article mainly explains the "flannel cluster installation method". The explanation content in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian slowly and deeply to study and learn the "flannel cluster installation method" together.

1. Download and deploy flannel

Create a catalog (three operations)

mkdir -p /app/kubernetes/{cfg,bin,ssl}

tar zxvf flannel-v0.10.0-linux-amd64.tar.gz

cp flanneld mk-docker-opts.sh /app/kubernetes/bin/

scp /app/kubernetes/bin/* k8s-node01:/app/kubernetes/bin/

scp /app/kubernetes/bin/* k8s-node02:/app/kubernetes/bin/

k8s-master-01

cd /app/etcd/ssl

/app/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.159.121:2379,https://192.168.159.122:2379,https://192.168.159.123:2379" set /coreos.com/network/config '{"Network": "172.18.0.0/16","Backend":{"Type":"vxlan"}}'

2, three deployment flannel service

Configure Flannel

vi /app/kubernetes/cfg/flanneld

FLANNEL_OPTIONS="--etcd-endpoints=https://192.168.159.121:2379,https://192.168.159.122:2379,https://192.168.159.123:2379 -etcd-cafile=/app/etcd/ssl/ca.pem -etcd-certfile=/app/etcd/ssl/server.pem -etcd-keyfile=/app/etcd/ssl/server-key.pem"

Configure Flannel AutoStart script

vi /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=/app/kubernetes/cfg/flanneld

ExecStart=/app/kubernetes/bin/flanneld --ip-masq $FLANNEL_OPTIONS

ExecStartPost=/app/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env

Restart=on-failure

[Install]

WantedBy=multi-user.target

Configure docker to use flannel network

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

EnvironmentFile=/run/flannel/subnet.env

ExecStart=/usr/bin/dockerd \$DOCKER_NETWORK_OPTIONS

start the service

systemctl daemon-reload

systemctl restart flanneld

systemctl enable flanneld

systemctl status flanneld

systemctl restart docker

systemctl status docker

Thank you for reading, the above is the content of the "flannel cluster installation method", after the study of this article, I believe that everyone has a deeper understanding of the flannel cluster installation method, and the specific use needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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