单机下载
版本信息请参考https://github.com/etcd-io/etcd/releases
本次以最新版本3.4.1为例https://github.com/etcd-io/etcd/releases/download/v3.4.1/etcd-v3.4.1-linux-amd64.tar.gz
主机名为sht-sgmhadoopnn-01，IP地址172.16.101.55
# cd /usr/local/ # wget https://github.com/etcd-io/etcd/releases/download/v3.4.1/etcd-v3.4.1-linux-amd64.tar.gz # tar -zxf etcd-v3.4.1-linux-amd64.tar.gz . # ln -s etcd-v3.4.1-linux-amd64 etcd # grep "PATH" ~/.bash_profile PATH=/usr/local/etcd:$PATH:$HOME/bin # ls -lh /usr/local/etcd/ total 40M drwxr-xr-x 14 1922357897 wheel 4.0K Sep 28 16:24 Documentation -rwxr-xr-x 1 1922357897 wheel 23M Sep 18 05:02 etcd -rwxr-xr-x 1 1922357897 wheel 17M Sep 18 05:02 etcdctl -rw-r--r-- 1 1922357897 wheel 43K Sep 18 05:02 README-etcdctl.md -rw-r--r-- 1 1922357897 wheel 8.3K Sep 18 05:02 README.md -rw-r--r-- 1 1922357897 wheel 7.7K Sep 18 05:02 READMEv2-etcdctl.md
启动etcd，以命令行和参数启动
etcd --name 'sht-sgmhadoopnn-01' --data-dir '/usr/local/etcd/data' --listen-client-urls 'http://0.0.0.0:2379' --advertise-client-urls 'http://0.0.0.0:2379',http://127.0.0.1:2379 --listen-peer-urls 'http://0.0.0.0:2380' --initial-advertise-peer-urls 'http://0.0.0.0:2380,http://127.0.0.1:2380' --enable-v2=true"
输出log
# etcd --logger=zap --name 'sht-sgmhadoopnn-01' --data-dir '/usr/local/etcd/data' --listen-client-urls 'http://0.0.0.0:2379' --advertise-client-urls 'http://0.0.0.0:2379' --listen-peer-urls 'http://0.0.0.0:2380' --initial-advertise-peer-urls 'http://0.0.0.0:2380'
{"level":"info","ts":"2019-09-28T16:38:59.917+0800","caller":"embed/etcd.go:117","msg":"configuring peer listeners","listen-peer-urls":["http://0.0.0.0:2380"]}
{"level":"info","ts":"2019-09-28T16:38:59.918+0800","caller":"embed/etcd.go:127","msg":"configuring client listeners","listen-client-urls":["http://0.0.0.0:2379"]}
{"level":"info","ts":"2019-09-28T16:38:59.918+0800","caller":"embed/etcd.go:299","msg":"starting an etcd server","etcd-version":"3.4.1","git-sha":"a14579fbf","go-version":"go1.12.9","go-os":"linux","go-arch":"amd64","max-cpu-set":2,"max-cpu-available":2,"member-initialized":false,"name":"sht-sgmhadoopnn-01","data-dir":"/usr/local/etcd/data","wal-dir":"","wal-dir-dedicated":"","member-dir":"/usr/local/etcd/data/member","force-new-cluster":false,"heartbeat-interval":"100ms","election-timeout":"1s","initial-election-tick-advance":true,"snapshot-count":100000,"snapshot-catchup-entries":5000,"initial-advertise-peer-urls":["http://0.0.0.0:2380"],"listen-peer-urls":["http://0.0.0.0:2380"],"advertise-client-urls":["http://0.0.0.0:2379"],"listen-client-urls":["http://0.0.0.0:2379"],"listen-metrics-urls":[],"cors":["*"],"host-whitelist":["*"],"initial-cluster":"sht-sgmhadoopnn-01=http://0.0.0.0:2380","initial-cluster-state":"new","initial-cluster-token":"etcd-cluster","quota-size-bytes":2147483648,"pre-vote":false,"initial-corrupt-check":false,"corrupt-check-time-interval":"0s","auto-compaction-mode":"periodic","auto-compaction-retention":"0s","auto-compaction-interval":"0s","discovery-url":"","discovery-proxy":""}
{"level":"info","ts":"2019-09-28T16:38:59.943+0800","caller":"etcdserver/backend.go:79","msg":"opened backend db","path":"/usr/local/etcd/data/member/snap/db","took":"24.695882ms"}
{"level":"info","ts":"2019-09-28T16:38:59.963+0800","caller":"etcdserver/raft.go:456","msg":"starting local member","local-member-id":"1c70f9bbb41018f","cluster-id":"a0d2de0531db7884"}
{"level":"info","ts":"2019-09-28T16:38:59.964+0800","caller":"raft/raft.go:1530","msg":"1c70f9bbb41018f switched to configuration voters=()"}
{"level":"info","ts":"2019-09-28T16:38:59.964+0800","caller":"raft/raft.go:700","msg":"1c70f9bbb41018f became follower at term 0"}
{"level":"info","ts":"2019-09-28T16:38:59.964+0800","caller":"raft/raft.go:383","msg":"newRaft 1c70f9bbb41018f [peers: [], term: 0, commit: 0, applied: 0, lastindex: 0, lastterm: 0]"}
{"level":"info","ts":"2019-09-28T16:38:59.964+0800","caller":"raft/raft.go:700","msg":"1c70f9bbb41018f became follower at term 1"}
{"level":"info","ts":"2019-09-28T16:38:59.964+0800","caller":"raft/raft.go:1530","msg":"1c70f9bbb41018f switched to configuration voters=(128088275939295631)"}
{"level":"warn","ts":"2019-09-28T16:38:59.988+0800","caller":"auth/store.go:1317","msg":"simple token is not cryptographically signed"}
{"level":"info","ts":"2019-09-28T16:38:59.998+0800","caller":"etcdserver/quota.go:98","msg":"enabled backend quota with default value","quota-name":"v3-applier","quota-size-bytes":2147483648,"quota-size":"2.1 GB"}
{"level":"info","ts":"2019-09-28T16:39:00.006+0800","caller":"etcdserver/server.go:791","msg":"starting etcd server","local-member-id":"1c70f9bbb41018f","local-server-version":"3.4.1","cluster-version":"to_be_decided"}
{"level":"info","ts":"2019-09-28T16:39:00.008+0800","caller":"etcdserver/server.go:657","msg":"started as single-node; fast-forwarding election ticks","local-member-id":"1c70f9bbb41018f","forward-ticks":9,"forward-duration":"900ms","election-ticks":10,"election-timeout":"1s"}
{"level":"info","ts":"2019-09-28T16:39:00.009+0800","caller":"raft/raft.go:1530","msg":"1c70f9bbb41018f switched to configuration voters=(128088275939295631)"}
{"level":"info","ts":"2019-09-28T16:39:00.009+0800","caller":"membership/cluster.go:392","msg":"added member","cluster-id":"a0d2de0531db7884","local-member-id":"1c70f9bbb41018f","added-peer-id":"1c70f9bbb41018f","added-peer-peer-urls":["http://0.0.0.0:2380"]}
{"level":"info","ts":"2019-09-28T16:39:00.012+0800","caller":"embed/etcd.go:241","msg":"now serving peer/client/metrics","local-member-id":"1c70f9bbb41018f","initial-advertise-peer-urls":["http://0.0.0.0:2380"],"listen-peer-urls":["http://0.0.0.0:2380"],"advertise-client-urls":["http://0.0.0.0:2379"],"listen-client-urls":["http://0.0.0.0:2379"],"listen-metrics-urls":[]}
{"level":"info","ts":"2019-09-28T16:39:00.013+0800","caller":"embed/etcd.go:576","msg":"serving peer traffic","address":"[::]:2380"}
{"level":"info","ts":"2019-09-28T16:39:00.065+0800","caller":"raft/raft.go:923","msg":"1c70f9bbb41018f is starting a new election at term 1"}
{"level":"info","ts":"2019-09-28T16:39:00.065+0800","caller":"raft/raft.go:713","msg":"1c70f9bbb41018f became candidate at term 2"}
{"level":"info","ts":"2019-09-28T16:39:00.065+0800","caller":"raft/raft.go:824","msg":"1c70f9bbb41018f received MsgVoteResp from 1c70f9bbb41018f at term 2"}
{"level":"info","ts":"2019-09-28T16:39:00.065+0800","caller":"raft/raft.go:765","msg":"1c70f9bbb41018f became leader at term 2"}
{"level":"info","ts":"2019-09-28T16:39:00.065+0800","caller":"raft/node.go:325","msg":"raft.node: 1c70f9bbb41018f elected leader 1c70f9bbb41018f at term 2"}
{"level":"info","ts":"2019-09-28T16:39:00.069+0800","caller":"etcdserver/server.go:2015","msg":"published local member to cluster through raft","local-member-id":"1c70f9bbb41018f","local-member-attributes":"{Name:sht-sgmhadoopnn-01 ClientURLs:[http://0.0.0.0:2379]}","request-path":"/0/members/1c70f9bbb41018f/attributes","cluster-id":"a0d2de0531db7884","publish-timeout":"7s"}
{"level":"info","ts":"2019-09-28T16:39:00.070+0800","caller":"etcdserver/server.go:2500","msg":"setting up initial cluster version","cluster-version":"3.4"}
{"level":"info","ts":"2019-09-28T16:39:00.071+0800","caller":"embed/serve.go:139","msg":"serving client traffic insecurely; this is strongly discouraged!","address":"[::]:2379"}
{"level":"info","ts":"2019-09-28T16:39:00.076+0800","caller":"membership/cluster.go:558","msg":"set initial cluster version","cluster-id":"a0d2de0531db7884","local-member-id":"1c70f9bbb41018f","cluster-version":"3.4"}
{"level":"info","ts":"2019-09-28T16:39:00.076+0800","caller":"api/capability.go:76","msg":"enabled capabilities for version","cluster-version":"3.4"}
{"level":"info","ts":"2019-09-28T16:39:00.076+0800","caller":"etcdserver/server.go:2532","msg":"cluster version is updated","cluster-version":"3.4"}
查看节点状态
# etcdctl endpoint status --write-out=table +----------------+-----------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ | ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS | +----------------+-----------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ | 127.0.0.1:2379 | 1c70f9bbb41018f | 3.4.1 | 20 kB | true | false | 2 | 5 | 5 | | +----------------+-----------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ # etcdctl endpoint health --write-out=table +----------------+--------+------------+-------+ | ENDPOINT | HEALTH | TOOK | ERROR | +----------------+--------+------------+-------+ | 127.0.0.1:2379 | true | 3.109338ms | | +----------------+--------+------------+-------+ # etcdctl member list --write-out=table +-----------------+---------+--------------------+---------------------+---------------------+------------+ | ID | STATUS | NAME | PEER ADDRS | CLIENT ADDRS | IS LEARNER | +-----------------+---------+--------------------+---------------------+---------------------+------------+ | 1c70f9bbb41018f | started | sht-sgmhadoopnn-01 | http://0.0.0.0:2380 | http://0.0.0.0:2379 | false | +-----------------+---------+--------------------+---------------------+---------------------+------------+
以服务模式启动
# cat /usr/lib/systemd/system/etcd.service [Unit] Description=etcd service Documentation=https://github.com/etcd-io/etcd After=network.target After=network-online.target Wants=network-online.target [Service] User=tnuser Type=notify WorkingDirectory=/usr/local/etcd ExecStart=/bin/bash -c "GOMAXPROCS=$(nproc) /usr/local/etcd/etcd --data-dir=/usr/local/etcd/data --name sht-sgmhadoopnn-01 --listen-client-urls http://0.0.0.0:2379 --advertise-client-urls http://0.0.0.0:2379 --initial-advertise-peer-urls http://0.0.0.0:2380 --listen-peer-urls http://0.0.0.0:2380 --enable-v2=true" Restart=always RestartSec=10s LimitNOFILE=65536 [Install] WantedBy=multi-user.target
# systemctl daemon-reload # systemctl start etcd # systemctl status etcd ● etcd.service - etcd service Loaded: loaded (/usr/lib/systemd/system/etcd.service; disabled; vendor preset: disabled) Active: active (running) since Sat 2019-09-28 17:24:13 CST; 2min 51s ago Docs: https://github.com/etcd-io/etcd Main PID: 3181 (etcd) Tasks: 10 Memory: 3.3M CGroup: /system.slice/etcd.service └─3181 /usr/local/etcd/etcd --data-dir=/usr/local/etcd/data --name sht-sgmhadoopnn-01 --listen-client-urls http://0.0.0.0:2379 --advertise-client-urls http://0.0.0.0:2379 --initial-advertise-peer-urls http://0.0.0.0:2380 --listen-peer-urls... Sep 28 17:24:12 sht-sgmhadoopnn-01 etcd[3181]: listening for peers on [::]:2380 Sep 28 17:24:13 sht-sgmhadoopnn-01 bash[3181]: raft2019/09/28 17:24:13 INFO: 1c70f9bbb41018f is starting a new election at term 2 Sep 28 17:24:13 sht-sgmhadoopnn-01 bash[3181]: raft2019/09/28 17:24:13 INFO: 1c70f9bbb41018f became candidate at term 3 Sep 28 17:24:13 sht-sgmhadoopnn-01 bash[3181]: raft2019/09/28 17:24:13 INFO: 1c70f9bbb41018f received MsgVoteResp from 1c70f9bbb41018f at term 3 Sep 28 17:24:13 sht-sgmhadoopnn-01 bash[3181]: raft2019/09/28 17:24:13 INFO: 1c70f9bbb41018f became leader at term 3 Sep 28 17:24:13 sht-sgmhadoopnn-01 bash[3181]: raft2019/09/28 17:24:13 INFO: raft.node: 1c70f9bbb41018f elected leader 1c70f9bbb41018f at term 3 Sep 28 17:24:13 sht-sgmhadoopnn-01 etcd[3181]: published {Name:sht-sgmhadoopnn-01 ClientURLs:[http://0.0.0.0:2379]} to cluster a0d2de0531db7884 Sep 28 17:24:13 sht-sgmhadoopnn-01 etcd[3181]: ready to serve client requests Sep 28 17:24:13 sht-sgmhadoopnn-01 etcd[3181]: serving insecure client requests on [::]:2379, this is strongly discouraged! Sep 28 17:24:13 sht-sgmhadoopnn-01 systemd[1]: Started etcd service.
以服务模式启动
# cat /usr/lib/systemd/system/etcd.service [Unit] Description=etcd service Documentation=https://github.com/etcd-io/etcd After=network.target After=network-online.target Wants=network-online.target [Service] User=tnuser Type=notify EnvironmentFile=/usr/local/etcd/etcd.conf WorkingDirectory=/usr/local/etcd ExecStart=/usr/local/etcd/etcd Restart=always RestartSec=10s LimitNOFILE=65536 [Install] WantedBy=multi-user.target
# cat /usr/local/etcd/etcd.conf ETCD_NAME="sht-sgmhadoopnn-01" ETCD_DATA_DIR="/usr/local/etcd/data" ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:2379" ETCD_ADVERTISE_CLIENT_URLS="http://0.0.0.0:2379,http://127.0.0.1:2379" ETCD_LISTEN_PEER_URLS="http://0.0.0.0:2380" ETCD_INITIAL_ADVERTISE_PEER_URLS="http://0.0.0.0:2380,http://127.0.0.1:2380" ETCD_ENABLE_V2="true"