k8s部署etcd数据库集群

时间：2022-05-26 16:10:41

⒈下载

https://github.com/etcd-io/etcd/releases

⒉解压

 tar -zxvf etcd-v3.3.12-linux-amd64.tar.gz

⒊移动可执行文件及证书文件到指定目录

 mkdir -p /opt/kubernetes/{bin,cfg,ssl}
 mv etcd-v3.3.12-linux-amd64/etcd /opt/kubernetes/bin/

 mv etcd-v3.3.12-linux-amd64/etcdctl /opt/kubernetes/bin/
cp /home/fanqi/*.pem /opt/kubernetes/ssl/

⒋新建一个配置文件

 cd /opt/kubernetes/cfg/

 vi etcd
#[Member]

ETCD_NAME="etcd02"

ETCD_DATA_DIR="/var/lib/etcd/default.etcd"

ETCD_LISTEN_PEER_URLS="https://192.168.0.212:2380"

ETCD_LISTEN_CLIENT_URLS="https://192.168.0.212:2379"

#[clustering]

ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.0.212:2380"

ETCD_ADVERTISE_CLIENT_URLS="https://192.168.0.212:2379"

ETCD_INITIAL_CLUSTER="etcd01=https://192.168.0.211:2380,etcd02=https://192.168.0.212:2380,etcd03=https://192.168.0.213:2380"

ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"

ETCD_INITIAL_CLUSTER_STATE="new"

⒌编写服务配置文件及启动服务

vi /usr/lib/systemd/system/etcd.service
[Unit]

Description=Etcd Server

After=network.target

After=network-online.target

Wants=network-online.target

[Service]

Type=notify

EnvironmentFile=-/opt/kubernetes/cfg/etcd

ExecStart=/opt/kubernetes/bin/etcd \

--name=${ETCD_NAME} \

--data-dir=${ETCD_DATA_DIR} \

--listen-peer-urls=${ETCD_LISTEN_PEER_URLS} \

--listen-client-urls=${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \

--advertise-client-urls=${ETCD_ADVERTISE_CLIENT_URLS} \

--initial-advertise-peer-urls=${ETCD_INITIAL_ADVERTISE_PEER_URLS} \

--initial-cluster=${ETCD_INITIAL_CLUSTER} \

--initial-cluster-token=${ETCD_INITIAL_CLUSTER_TOKEN} \

--initial-cluster-state=new \

--cert-file=/opt/kubernetes/ssl/server.pem \

--key-file=/opt/kubernetes/ssl/server-key.pem \

--peer-cert-file=/opt/kubernetes/ssl/server.pem \

--peer-key-file=/opt/kubernetes/ssl/server-key.pem \

--trusted-ca-file=/opt/kubernetes/ssl/ca.pem \

--peer-trusted-ca-file=/opt/kubernetes/ssl/ca.pem

Restart=on-failure

LimitNOFILE=65536

[Install]

WantedBy=multi-user.target
systemctl start etcd

⒍设置开机启动

systemctl enable etcd

⒎查看集群状态

/opt/kubernetes/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://192.168.0.211:2379,https://192.168.0.212:2379,https://192.168.0.213:2379" cluster-health

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