etcd集群的搭建

  • Z时代
  • 2024-01-10
  • 分类：综合

本文内容纲要：etcd集群的搭建

由于最近在学习kubernetes,etcd作为kubernetes集群的主数据库，必须先启动。

etcds实例名称IP地址Hostname
etcd 1192.168.142.161kubernetes-node1.example.com
etcd 2192.168.142.162kubernetes-node2.example.com
etcd 3192.168.142.163kubernetes-node3.example.com

从GitHub官网上下载etcd发布的二进制文件，etcd和etcdctl文件复制到/usr/bin目录。

  • 设置systemd服务文件。

    vim /usr/lib/systemd/system/etcd.service

    内容如下：

    [Unit]

    Description=Etcd Server

    After=network.target

    [Service]

    Type=simple

    WorkingDirectory=/var/lib/etcd/

    EnvironmentFile=-/etc/etcd/etcd.conf #配置文件路径

    ExecStart=/usr/bin/etcd

    Type=notify

    [Install]

    WantedBy=multi-user.target

  • 编写/etc/etcd/etcd.conf文件

    vim /etc/etcd/etcd.conf

    [member]

    ETCD_NAME=etcd1 #etcd实例名称

    ETCD_DATA_DIR="/var/lib/etcd" #etcd数据保存目录

    ETCD_LISTEN_CLIENT_URLS="http://192.168.142.161:2379,http://127.0.0.1:2379"

    #供外部客户端使用的url

    ETCD_ADVERTISE_CLIENT_URLS="http://192.168.142.161:2379,http://127.0.0.1:2379"

    #广播给外部客户端使用的url

    #[cluster]

    ETCD_LISTEN_PEER_URLS="http://192.168.142.161:2380" #集群内部通信使用的URL

    ETCD_INITIAL_ADVERTISE_PEER_URLS="http://192.168.142.161:2380"

    #广播给集群内其他成员访问的URL

    ETCD_INITIAL_CLUSTER="etcd1=http://192.168.142.161:2380,etcd2=http://192.168.142.162:2380,etcd3=http://192.168.142.163:2380"

    #初始集群成员列表

    ETCD_INITIAL_CLUSTER_STATE="new"

    #初始集群状态，new为新建集群

    ETCD_INITIAL_CLUSTER_TOKEN="k8s-etcd-cluster" #集群的名称

  • 启动etcd1服务器上的etcd服务。

    systemctl restart etcd

  • etcd2和etcd3为加入k8s-etcd-cluster集群的实例，需要将其ETCD_INITIAL_CLUSTER_STATE设置为"exist"。etcd2的完整配置如下：

    [member]

    ETCD_NAME=etcd2

    ETCD_DATA_DIR="/var/lib/etcd"

    ETCD_LISTEN_CLIENT_URLS="http://192.168.142.162:2379,http://127.0.0.1:2379"

    ETCD_ADVERTISE_CLIENT_URLS="http://192.168.142.162:2379,http://127.0.0.1:2379"

    #[cluster]

    ETCD_LISTEN_PEER_URLS="http://192.168.142.162:2380"

    ETCD_INITIAL_ADVERTISE_PEER_URLS="http://192.168.142.162:2380"

    ETCD_INITIAL_CLUSTER="etcd1=http://192.168.142.161:2380,etcd2=http://192.168.142.162:2380,etcd3=http://192.168.142.163:2380"

    ETCD_INITIAL_CLUSTER_STATE="exist"

    ETCD_INITIAL_CLUSTER_TOKEN="k8s-etcd-cluster"

  • 启动etcd2和etcd3服务器上的etcd服务。

    systemctl restart etcd

    启动完成后，在任意节点执行etcdctl cluster-healthy命令来查看运行状态。

    使用etcdctl member list 来查看集群中的成员列表。

另外一种安装方法

etcd集群搭建
下载二进制软件包
https://github.com/coreos/etcd/releases	  
解压
将两个执行文件复制到/usr/bin/
etcd和etcdctl文件复制到/usr/bin目录
配置etcd-1
vi /etc/etcd/etcd.yml
name: etcd-1
data-dir: /var/lib/etcd
listen-client-urls: http://163.44.167.92:2379,http://127.0.0.1:2379
advertise-client-urls: http://163.44.167.92:2379,http://127.0.0.1:2379
listen-peer-urls: http://163.44.167.92:2380
initial-advertise-peer-urls: http://163.44.167.92:2380
initial-cluster: etcd-1=http://163.44.167.92:2380,etcd-2=http://150.95.148.52:2380,etcd-3=http://133.130.122.48:2380
initial-cluster-token: etcd-cluster-token
initial-cluster-state: new
配置etcd-2
vi /etc/etcd/etcd.yml
name: etcd-2
data-dir: /var/lib/etcd
listen-client-urls: http://150.95.148.52:2379,http://127.0.0.1:2379
advertise-client-urls: http://150.95.148.52:2379,http://127.0.0.1:2379
listen-peer-urls: http://150.95.148.52:2380
initial-advertise-peer-urls: http://150.95.148.52:2380
initial-cluster: etcd-1=http://163.44.167.92:2380,etcd-2=http://150.95.148.52:2380,etcd-3=http://133.130.122.48:2380
initial-cluster-token: etcd-cluster-token
initial-cluster-state: new
配置etcd-3
name: etcd-3
data-dir: /var/lib/etcd
listen-client-urls: http://133.130.122.48:2379,http://127.0.0.1:2379
advertise-client-urls: http://133.130.122.48:2379,http://127.0.0.1:2379
listen-peer-urls: http://133.130.122.48:2380
initial-advertise-peer-urls: http://133.130.122.48:2380
initial-cluster: etcd-1=http://163.44.167.92:2380,etcd-2=http://150.95.148.52:2380,etcd-3=http://133.130.122.48:2380
initial-cluster-token: etcd-cluster-token
initial-cluster-state: new
最后启动
etcd --config-file=/etc/etcd/etcd.yml &
查看成员
etcdctl member list
每个节点上执行查看健康状态
etcdctl cluster-health

本文内容总结：etcd集群的搭建

原文链接：https://www.cnblogs.com/skymyyang/p/9067280.html

以上是 etcd集群的搭建 的全部内容， 来源链接： utcz.com/z/296991.html

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