2019獨角獸企業重金招聘Python工程師標準>>> 
一、etcd v3安裝：
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/ |
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#如果不設置 ETCDCTL_API=3，則默認是的API版本是2
export ETCDCTL_API=3
echo 'export ETCDCTL_API=3' >> /etc/profile |
二、集群配置：
??????? 單機，雙點，可根據實際情況修改端口
| #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 & |
??????? 參數說明：
● –data-dir 指定節點的數據存儲目錄，若不指定，則默認是當前目錄。這些數據包括節點ID，集群ID，集群初始化配置，Snapshot文件，若未指 定–wal-dir，還會存儲WAL文件
● –wal-dir 指定節點的was文件存儲目錄，若指定了該參數，wal文件會和其他數據文件分開存儲
● –name 節點名稱
● –initial-advertise-peer-urls 告知集群其他節點的URL，tcp 2380端口用于集群通信
● –listen-peer-urls 監聽URL，用于與其他節點通訊
● –advertise-client-urls 告知客戶端的URL, 也就是服務的URL，tcp 2379端口用于監聽客戶端請求
● –initial-cluster-token 集群的ID
● –initial-cluster 集群中所有節點
● –initial-cluster-state 集群狀態，new為新創建集群，existing為已存在的集群 |
三、實例：
| [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 #設置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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