二進制安裝 kubernetes 1.12(二) - 安裝docker, 部署Flannel網絡
阿新 • • 發佈：2019-01-23
amd class bubuko pos 技術分享 wan 指定 master src
在 node 節點上安裝 docker
參考 https://www.cnblogs.com/klvchen/p/8468855.html
Flannel 工作原理:
部署Flannel網絡
在 master上執行
# Falnnel要用etcd存儲自身一個子網信息，所以要保證能成功連接Etcd，寫入預定義子網段： cd /opt/etcd/ssl /opt/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.0.205:2379,https://192.168.0.206:2379,https://192.168.0.207:2379" set /coreos.com/network/config ‘{ "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}‘
下載 flannel-v0.10.0-linux-amd64.tar.gz
ansible node -m file -a ‘path=/iba/tools state=directory‘ ansible node -m command -a ‘wget -O /iba/tools/flannel-v0.10.0-linux-amd64.tar.gz https://github.com/coreos/flannel/releases/download/v0.10.0/flannel-v0.10.0-linux-amd64.tar.gz‘ ansible node -m file -a ‘path=/opt/kubernetes/bin state=directory‘ ansible node -m shell -a ‘tar zxf /iba/tools/flannel-v0.10.0-linux-amd64.tar.gz -C /opt/kubernetes/bin/‘
systemd 管理 Flannel
mkdir /home/config && cd /home/config cat > flanneld.service <<-‘EOF‘ [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 EOF ansible node -m copy -a ‘src=flanneld.service dest=/usr/lib/systemd/system/flanneld.service‘
配置Flannel
ansible node -m file -a ‘path=/opt/kubernetes/cfg state=directory‘
cat > flanneld << EOF
FLANNEL_OPTIONS="--etcd-endpoints=https://192.168.0.205:2379,https://192.168.0.206:2379,https://192.168.0.207:2379 -etcd-cafile=/opt/etcd/ssl/ca.pem -etcd-certfile=/opt/etcd/ssl/server.pem -etcd-keyfile=/opt/etcd/ssl/server-key.pem"
EOF
ansible node -m copy -a ‘src=flanneld dest=/opt/kubernetes/cfg/flanneld‘配置Docker啟動指定子網段
# 在node上執行
vi /usr/lib/systemd/system/docker.service
# 在 for containers run by docker 下面添加，修改兩行
EnvironmentFile=/run/flannel/subnet.env
ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS -H unix://啟動 ?annel 和 重啟 docker
# 在 master 上執行
ansible node -m shell -a ‘systemctl daemon-reload‘
ansible node -m shell -a ‘systemctl start flanneld‘
ansible node -m shell -a ‘systemctl status flanneld.service‘
ansible node -m shell -a ‘systemctl restart docker‘檢查 docker 有沒有在指定的 ip下啟動
ansible node -m shell -a ‘ps -ef|grep docker‘檢查 docker0 與 flannel.1 在同一個網段
ansible node -m shell -a ‘ip add‘二進制安裝 kubernetes 1.12(二) - 安裝docker, 部署Flannel網絡