CentOS 部署Etcd集群
一、環境介紹
操作系統信息：CentOS 7 64位
服務器信息:
192.168.80.130 Etcd-master
192.168.80.131 Etcd-node1
192.168.80.132 Etcd-node2
二、部署前準備
1、設置免密登錄
[Master]
[[email protected] ~]# ssh-keygen
[[email protected] ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub Etcd-node1
[[email protected]
2、所有機器上操作
a、添加hosts
[[email protected] ~]# 192.168.80.130 Etcd-master
[[email protected] ~]# 192.168.80.131 Etcd-node1
[[email protected] ~]# 192.168.80.132 Etcd-node2
b、同步時間
[[email protected]
[[email protected] ~]# yum groupinstall "Development Tools" -y
[[email protected] ~]# cp -Rf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
[[email protected] ~]# ntpdate 133.100.11.8
[[email protected] ~]# sed -i ‘s#ZONE="America/New_York"#ZONE="Asia/Shanghai"#g‘ /etc/sysconfig/clock
[[email protected] ~]# hwclock -w
[[email protected] ~]# date -R
三、部署Etcd
[Master]
1、安裝及配置Master節點
[[email protected] ~]# yum -y install etcd
[[email protected] ~]# cat /etc/etcd/etcd.conf
# [member]
ETCD_NAME="etcd-master"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
#ETCD_WAL_DIR=""
#ETCD_SNAPSHOT_COUNT="10000"
#ETCD_HEARTBEAT_INTERVAL="100"
#ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="http://0.0.0.0:2380"
ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:4001,http://0.0.0.0:2379"
#ETCD_MAX_SNAPSHOTS="5"
#ETCD_MAX_WALS="5"
#ETCD_CORS=""
#
#[cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://etcd-master:2380"
# if you use different ETCD_NAME (e.g. test), set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="etcd-node1=http://etcd-node1:2380,etcd-node2=http://etcd-node2:2380,etcd-master=http://etcd-master:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="http://Etcd-master:2379,http://Etcd-master:4001"
[Node]
2、安裝及配置Node1節點
[[email protected] ~]# yum -y install etcd
[[email protected] ~]# cat /etc/etcd/etcd.conf
# [member]
ETCD_NAME="etcd-node1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
#ETCD_WAL_DIR=""
#ETCD_SNAPSHOT_COUNT="10000"
#ETCD_HEARTBEAT_INTERVAL="100"
#ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="http://0.0.0.0:2380"
ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:4001,http://0.0.0.0:2379"
#ETCD_MAX_SNAPSHOTS="5"
#ETCD_MAX_WALS="5"
#ETCD_CORS=""
#
#[cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://etcd-node1:2380"
# if you use different ETCD_NAME (e.g. test), set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="etcd-node1=http://etcd-node1:2380,etcd-node2=http://etcd-node2:2380,etcd-master=http://etcd-master:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="http://etcd-node1:2379,http://etcd-node1:4001"
3、安裝及配置Node2節點：
[[email protected] ~]# yum -y install etcd
[[email protected] ~]# cat /etc/etcd/etcd.conf
# [member]
ETCD_NAME="etcd-node2"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
#ETCD_WAL_DIR=""
#ETCD_SNAPSHOT_COUNT="10000"
#ETCD_HEARTBEAT_INTERVAL="100"
#ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="http://0.0.0.0:2380"
ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:4001,http://0.0.0.0:2379"
#ETCD_MAX_SNAPSHOTS="5"
#ETCD_MAX_WALS="5"
#ETCD_CORS=""
#
#[cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://etcd-node2:2380"
# if you use different ETCD_NAME (e.g. test), set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="etcd-node1=http://etcd-node1:2380,etcd-node2=http://etcd-node2:2380,etcd-master=http://etcd-master:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="http://etcd-node2:2379,http://etcd-node2:4001"
4、啟動Etcd服務
[master]
[[email protected] ~]# systemctl restart etcd
[node1]
[[email protected] ~]# systemctl restart etcd
[node2]
[[email protected] ~]# systemctl restart etcd
5、查看服務狀態
[master]
[[email protected] ~]# etcdctl member list
6c74f3fd7534bb5: name=etcd-node1 peerURLs=http://etcd-node1:2380 clientURLs=http://etcd-node1:2379,http://etcd-node1:4001 isLeader=false
a57a17f287dbe7bb: name=etcd-node2 peerURLs=http://etcd-node2:2380 clientURLs=http://etcd-node2:2379,http://etcd-node2:4001 isLeader=true
ffe21a7812eb7c5f: name=etcd-master peerURLs=http://etcd-master:2380 clientURLs= isLeader=false
[node1]
[[email protected] ~]# etcdctl member list
6c74f3fd7534bb5: name=etcd-node1 peerURLs=http://etcd-node1:2380 clientURLs=http://etcd-node1:2379,http://etcd-node1:4001 isLeader=false
a57a17f287dbe7bb: name=etcd-node2 peerURLs=http://etcd-node2:2380 clientURLs=http://etcd-node2:2379,http://etcd-node2:4001 isLeader=true
ffe21a7812eb7c5f: name=etcd-master peerURLs=http://etcd-master:2380 clientURLs= isLeader=false
[node2]
[[email protected] ~]# etcdctl member list
6c74f3fd7534bb5: name=etcd-node1 peerURLs=http://etcd-node1:2380 clientURLs=http://etcd-node1:2379,http://etcd-node1:4001 isLeader=false
a57a17f287dbe7bb: name=etcd-node2 peerURLs=http://etcd-node2:2380 clientURLs=http://etcd-node2:2379,http://etcd-node2:4001 isLeader=true
ffe21a7812eb7c5f: name=etcd-master peerURLs=http://etcd-master:2380 clientURLs= isLeader=false
四、測試集群同步情況
[master]
[[email protected] ~]# etcdctl set zlyangdir/zlyangkeys0 0
0
[[email protected] ~]# etcdctl ls zlyangdir
zlyangdir/zlyangkeys0
[[email protected] ~]# etcdctl get zlyangdir/zlyangkeys0
0
[node1]
[[email protected] ~]# etcdctl ls zlyangdir
zlyangdir/zlyangkeys0
[[email protected] ~]# etcdctl get zlyangdir/zlyangkeys0
0
[node2]
[[email protected] ~]# etcdctl ls zlyangdir
zlyangdir/zlyangkeys0
[[email protected] ~]# etcdctl get zlyangdir/zlyangkeys0
0
官方部署方案：https://coreos.com/etcd/docs/latest/op-guide/clustering.html
至此Etcd集群搭建已經完成，如有問題請聯系：[email protected]
本文出自 “Elephant” 博客，請務必保留此出處http://zlyang.blog.51cto.com/1196234/1951164
CentOS 部署Etcd集群