Shulou(Shulou.com)06/02 Report--

Node1 192.168.56.173node2 192.168.56.174node3 192.168.56.200node* is the host name [root@node1 ~] # cat / etc/redhat-release CentOS Linux release 7.2.1511 (Core) [root@node1 ~] #

Https://github.com/coreos/etcd/releases/download/v3.0.15/etcd-v3.0.15-linux-amd64.tar.gz tar xf etcd-v3.0.15-linux-amd64.tar.gz cd etcd-v3.0.15-linux-amd64 cp etcd / usr/bin/cp etcdctl / usr/bin/

192.168.56.173 (node1)

Cat / etc/systemd/system/etcd2.service

[Unit] Description= etcd2.service[ service] Type=notifyTimeoutStartSec=0Restart=alwaysExecStartPre=-/usr/bin/mkdir-p / data/etcd2ExecStart=/usr/bin/etcd\-- data-dir / data/etcd2\-- name etcd0\-- advertise-client-urls http://192.168.56.173:2379,http://192.168.56.173:4001\-- listen-client-urls http://0.0.0.0:2379, Http://0.0.0.0:4001\-- initial-advertise-peer-urls http://192.168.56.173:2380\-- listen-peer-urls http://0.0.0.0:2380\-- initial-cluster-token etcd-cluster-1\-- initial-cluster etcd0= http://192.168.56.173:2380,etcd1=http://192.168.56.174:2380, Etcd2= http://192.168.56.200:2380[Install]WantedBy=multi-user.target# setup service self-startup systemctl enable / etc/systemd/system/etcd2.service# launch etcd1 (do not do all three nodes are deployed before starting separately, otherwise it will start hang) systemctl restart etcd2.service

192.168.56.174 (node2)

[root@node2 ~] # cat / etc/systemd/system/etcd2.service

[Unit] Description= etcd2.service[ service] Type=notifyTimeoutStartSec=0Restart=alwaysExecStartPre=-/usr/bin/mkdir-p / data/etcd2ExecStart=/usr/bin/etcd\-- data-dir / data/etcd2\-- name etcd1\-- advertise-client-urls http://192.168.56.174:2379,http://192.168.56.174:4001\-- listen-client-urls http://0.0.0.0:2379, Http://0.0.0.0:4001\-- initial-advertise-peer-urls http://192.168.56.174:2380\-- listen-peer-urls http://0.0.0.0:2380\-- initial-cluster-token etcd-cluster-1\-- initial-cluster etcd0= http://192.168.56.173:2380,etcd1=http://192.168.56.174:2380, Etcd2= http://192.168.56.200:2380[Install]WantedBy=multi-user.target# setup service self-startup systemctl enable / etc/systemd/system/etcd2.service# launch etcd2 (do not do all three nodes are deployed before starting separately, otherwise it will start hang) systemctl restart etcd2.service

192.168.56.200 (node2)

[root@node3~] # cat / etc/systemd/system/etcd2.service

[root@node3 ~] # cat / etc/systemd/system/etcd2.service [Unit] Description= etcd2.serviceType=notifyTimeoutStartSec=0Restart=alwaysExecStartPre=-/usr/bin/mkdir-p / data/etcd2ExecStart=/usr/bin/etcd\-- data-dir / data/etcd2\-- name etcd2\-- advertise-client-urls http://192.168.56.200:2379,http://192.168.56.200:4001\-- listen-client-urls http://0.0.0.0:2379, Http://0.0.0.0:4001\-- initial-advertise-peer-urls http://192.168.56.200:2380\-- listen-peer-urls http://0.0.0.0:2380\-- initial-cluster-token etcd-cluster-1\-- initial-cluster etcd0= http://192.168.56.173:2380,etcd1=http://192.168.56.174:2380, Etcd2= http://192.168.56.200:2380[Install]WantedBy=multi-user.target# setup service self-startup systemctl enable / etc/systemd/system/etcd2.service# launch etcd3 (do not do all three nodes are deployed before starting separately, otherwise it will start hang) systemctl restart etcd2.service

Note: start one by one, otherwise systemctl restart etcd2.service will hang live

View statu

[root@node3] # systemctl status etcd2.service ● etcd2.service Loaded: loaded (/ etc/systemd/system/etcd2.service; enabled; vendor preset: disabled) Active: active (running) since Sat 2017-09-02 23:43:59 CST 10min ago Process: 2673 ExecStartPre=/usr/bin/mkdir-p / data/etcd2 (code=exited, status=0/SUCCESS) Main PID: 2675 (etcd) CGroup: / system.slice/etcd2.service └─ 2675 / usr/bin/etcd-data-dir / data/etcd2-name etcd2-advertise-client-urls http://192.168.56.200:2379,http://192.168.56.200:4001-listen-client-urls http://0.0.0.0:2379, Http://0.0.0.0:4001...Sep 02 23:44:45 node3 etcd [2675]: established a TCP streaming connection with peer e37f661be0f0e44a (stream Message reader) Sep 02 23:44:45 node3 etcd [2675]: established a TCP streaming connection with peer 161efc88633d5fd4 (stream MsgApp v2 reader) Sep 02 23:44:45 node3 etcd [2675]: established a TCP streaming connection with peer 161efc88633d5fd4 (stream Message reader) Sep 02 23:44:45 node3 etcd [2675]: closed an existing TCP streaming connection with peer 161efc88633d5fd4 (stream Message) Writer) Sep 02 23:44:45 node3 etcd [2675]: established a TCP streaming connection with peer 161efc88633d5fd4 (stream Message writer) Sep 02 23:44:46 node3 etcd [2675]: 52aafe548d51c9ea [term: 25] received a MsgVote message with higher term from e37f661be0f0e44a [term: 26] Sep 02 23:44:46 node3 etcd [2675]: 52aafe548d51c9ea became follower at term 26Sep 02 23:44:46 node3 etcd [2675]: 52aafe548d51c9ea [logterm: 20 Index: 623, vote: 0] voted for e37f661be0f0e44a [logterm: 20 Index: 623] at term 26Sep 02 23:44:46 node3 etcd [2675]: 52aafe548d51c9ea [term: 26] ignored a MsgVote message with lower term from 161efc88633d5fd4 [term: 24] Sep 02 23:44:46 node3 etcd [2675]: raft.node: 52aafe548d51c9ea elected leader e37f661be0f0e44a at term 26 [root@node3] # [root@node3] # netstat-lntup Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0 LISTEN 1132/master tcp6 22 0 0 0 LISTEN 869/sshd tcp 0 0 127 0 0 0 1 0 0 0: 0 0 0:: 2379:: * LISTEN 2675/etcd tcp6 0 0: 2380: * LISTEN 2675/etcd tcp6 0 0: 22:: * LISTEN 869/sshd tcp6 0 0: : 1:25:: * LISTEN 1132/master tcp6 00: 4001:: * LISTEN 2675/etcd [root@node3 ~] #

View the status of related subjects

[root@node1 etcd-v3.0.15-linux-amd64] # etcdctl member list161efc88633d5fd4: name=etcd0 peerURLs= http://192.168.56.173:2380 clientURLs= http://192.168.56.173:2379,http://192.168.56.173:4001 isLeader=false52aafe548d51c9ea: name=etcd2 peerURLs= http://192.168.56.200:2380 clientURLs= http://192.168.56.200:2379, Http://192.168.56.200:4001 isLeader=falsee37f661be0f0e44a: name=etcd1 peerURLs= http://192.168.56.174:2380 clientURLs= http://192.168.56.174:2379,http://192.168.56.174:4001 isLeader=true [root@node1 etcd-v3.0.15-linux-amd64] #

Cluster status monitoring (can be combined with zabbix for monitoring)

[root@node1 etcd-v3.0.15-linux-amd64] # etcdctl cluster-healthmember 161efc88633d5fd4 is healthy: got healthy result from http://192.168.56.173:2379member 52aafe548d51c9ea is healthy: got healthy result from http://192.168.56.200:2379member e37f661be0f0e44a is healthy: got healthy result from http://192.168.56.174:2379cluster is healthy [root@node1 etcd-v3.0.15-linux-amd64] #

Basic operation of etcd

[root@node1 ~] # etcdctl set testkey "hello world" hello world [root@node1] # etcdctl get testkey hello world [root@node1 ~] # curl-L http://localhost:2379/v2/keys/testkey{"action":"get","node":{"key":"/testkey","value":"hello world "," modifiedIndex ": 11 "createdIndex": 11}} [root@node1 ~] # curl-L http://192.168.56.173:2379/v2/keys/testkey{"action":"get","node":{"key":"/testkey","value":"hello world "," modifiedIndex ": 11," createdIndex ": 11}} [root@node1 ~] #

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