如何安装配置ETCD

本篇内容主要讲解“如何安装配置ETCD”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“如何安装配置ETCD”吧!

本篇内容主要讲解“如何安装配置ETCD”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“如何安装配置ETCD”吧!
Master: 192.168.56.101
Worker node1: 192.168.56.102

Worker node2: 192.168.56.103
在安装k8s之前，手动安装配置etcd下载etcd

https://github.com/etcd-io/etcd/releases/download/v3.2.30/etcd-v3.2.30-linux-amd64.tar.gz
传到3节点，解压压缩包
mkdir /opt/etcd/{bin,cfg,ssl} -p
tar -zxvf etcd-v3.2.30-linux-amd64.tar.gz -C ./
mv etcd-v3.2.30-linux-amd64/{etcd,etcdctl} /opt/etcd/bin/master节点配置文件 /opt/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd-1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.56.101:2380"

ETCD_LISTEN_CLIENT_URLS="https://192.168.56.101:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.56.101:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.56.101:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.56.101:2380,etcd-2=https://192.168.56.102:2380,etcd-3=https://192.168.56.103:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"Worker node1节点配置文件 /opt/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd-2"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.56.102:2380"

ETCD_LISTEN_CLIENT_URLS="https://192.168.56.102:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.56.102:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.56.102:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.56.101:2380,etcd-2=https://192.168.56.102:2380,etcd-3=https://192.168.56.103:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"Worker node2节点配置文件 /opt/etcd/cfg/etcd
#[Member]
ETCD_NAME="etcd-3"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.56.103:2380"

ETCD_LISTEN_CLIENT_URLS="https://192.168.56.103:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.56.103:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.56.103:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.56.101:2380,etcd-2=https://192.168.56.102:2380,etcd-3=https://192.168.56.103:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"

ETCD_INITIAL_CLUSTER_STATE="new"master节点，Worker node1, Worker node2 配置文件 /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/etcd/cfg/etcd
ExecStart=/opt/etcd/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/etcd/ssl/server.pem \
--key-file=/opt/etcd/ssl/server-key.pem \
--peer-cert-file=/opt/etcd/ssl/server.pem \
--peer-key-file=/opt/etcd/ssl/server-key.pem \
--trusted-ca-file=/opt/etcd/ssl/ca.pem \
--peer-trusted-ca-file=/opt/etcd/ssl/ca.pem
Restart=on-failure

LimitNOFILE=65536
[Install]
WantedBy=multi-user.target将之前生成的证书拷贝到/opt/etcd/ssl
cp ca*pem server*pem /opt/etcd/ssl启动并设置开机启动
systemctl start etcd

systemctl enable etcd
检查一下集群的状态
/opt/etcd/bin/etcdctl --ca-file=/opt/etcd/ssl/ca.pem --cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem --endpoints="https://192.168.56.101:2379,https://192.168.56.102:2379,https://192.168.56.103:2379" cluster-health
member 181ffe2d394f445b is healthy: got healthy result from https://192.168.56.101:2379
member 737ab8edec59b6e6 is healthy: got healthy result from https://192.168.56.102:2379
member 87a3a196a794e8f0 is healthy: got healthy result from https://192.168.56.103:2379

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cluster is healthy

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