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etcd v3 集群——简单配置

2017-08-02 00:00 696 查看
摘要: For K8S

一、etcd v3安装:

tar -axf etcd-v3.2.0-linux-amd64.tar.gz -C /usr/local/src/
chmod a+x /usr/local/src/etcd-v3.2.0-linux-amd64/etcd*
cp -a /usr/local/src/etcd-v3.2.0-linux-amd64/etcd* /usr/local/bin/
#如果不设置 ETCDCTL_API=3,则默认是的API版本是2

export ETCDCTL_API=3
echo 'export ETCDCTL_API=3' >> /etc/profile
二、集群配置:

单机,双点,可根据实际情况修改端口

#node1
etcd -name perofu1 -debug \
-initial-advertise-peer-urls http://0.0.0.0:2380 \
-listen-peer-urls http://0.0.0.0:2380 \
-listen-client-urls http://0.0.0.0:2379 \
-advertise-client-urls http://0.0.0.0:2379 \
-initial-cluster-token etcd-cluster-1 \
-initial-cluster perofu1=http://0.0.0.0:2380,perofu2=http://0.0.0.0:4380 \
-initial-cluster-state new >> /var/log/kubernetes/test-etcd.log 2>&1 &
#node2
etcd -name perofu2 -debug \
-initial-advertise-peer-urls http://0.0.0.0:4380 \
-listen-peer-urls http://0.0.0.0:4380 \
-listen-client-urls http://0.0.0.0:4379 \
-advertise-client-urls http://0.0.0.0:4379 \
-initial-cluster-token etcd-cluster-1 \
-initial-cluster perofu1=http://0.0.0.0:2380,perofu2=http://0.0.0.0:4380 \
-initial-cluster-state new >> /var/log/kubernetes/test-etcd-1.log 2>&1 &
参数说明

● –data-dir 指定节点的数据存储目录,若不指定,则默认是当前目录。这些数据包括节点ID,集群ID,集群初始化配置,Snapshot文件,若未指 定–wal-dir,还会存储WAL文件
● –wal-dir 指定节点的was文件存储目录,若指定了该参数,wal文件会和其他数据文件分开存储
● –name 节点名称
● –initial-advertise-peer-urls 告知集群其他节点的URL,tcp 2380端口用于集群通信
● –listen-peer-urls 监听URL,用于与其他节点通讯
● –advertise-client-urls 告知客户端的URL, 也就是服务的URL,tcp 2379端口用于监听客户端请求
● –initial-cluster-token 集群的ID
● –initial-cluster 集群中所有节点
● –initial-cluster-state 集群状态,new为新创建集群,existing为已存在的集群
三、实例:

[root@www ~]# curl -s http://192.168.0.211:2379/v2/machines http://0.0.0.0:2379, http://0.0.0.0:4379 [root@www ~]#
[root@www ~]# etcdctl member list
25a7dd0a87b3530: name=perofu2 peerURLs=http://0.0.0.0:4380 clientURLs=http://0.0.0.0:4379 isLeader=false
2006f2ad47deea09: name=perofu1 peerURLs=http://0.0.0.0:2380 clientURLs=http://0.0.0.0:2379 isLeader=true
[root@www ~]#
[root@www ~]# etcdctl cluster-health
member 25a7dd0a87b3530 is healthy: got healthy result from http://0.0.0.0:4379 member 2006f2ad47deea09 is healthy: got healthy result from http://0.0.0.0:2379 cluster is healthy
#设置key
[root@www ~]# etcdctl --endpoints "http://127.0.0.1:2379" set api_server http://192.168.0.211:8080 http://192.168.0.211:8080
[root@www ~]#
[root@www ~]# etcdctl --endpoints "http://127.0.0.1:2379" get api_server http://192.168.0.211:8080 [root@www ~]#
[root@www ~]# etcdctl --endpoints "http://127.0.0.1:4379" get api_server http://192.168.0.211:8080 [root@www ~]#
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标签:  Kubernetes k8s etcd 集群