oot@ubuntu:~/cfssl/etcd# /usr/bin/etcd version 2021-07-01 16:00:41.185752 W | etcdmain: running etcd on unsupported architecture "arm64" since ETCD_UNSUPPORTED_ARCH is set 2021-07-01 16:00:41.185945 E | etcdmain: error verifying flags, 'version' is not a valid flag. See 'etcd --help'. root@ubuntu:~/cfssl/etcd#
根据提示设置环境变量
# export ETCD_UNSUPPORTED_ARCH=arm64
也可以加入到vi ~/.bash_profile中然后source ~/.bash_profile固化下来
root@ubuntu:~/cfssl/etcd# /usr/bin/etcd version 2021-07-01 16:01:14.205081 W | etcdmain: running etcd on unsupported architecture "arm64" since ETCD_UNSUPPORTED_ARCH is set 2021-07-01 16:01:14.205273 E | etcdmain: error verifying flags, 'version' is not a valid flag. See 'etcd --help'. root@ubuntu:~/cfssl/etcd#
下载
etcd-v3.3.11
root@ubuntu:~/cfssl/etcd# ls etcd-v3.3.11-linux-arm64 Documentation etcd etcdctl README-etcdctl.md README.md READMEv2-etcdctl.md root@ubuntu:~/cfssl/etcd# ./etcd-v3.3.11-linux-arm64/etcd --version 2021-07-01 16:06:22.589156 W | etcdmain: running etcd on unsupported architecture "arm64" since ETCD_UNSUPPORTED_ARCH is set etcd Version: 3.3.11 Git SHA: 2cf9e51d2 Go Version: go1.10.7 Go OS/Arch: linux/arm64
采用3.5的可以了
/etcd-v3.5.0-linux-arm64# ./etcd version {"level":"info","ts":1625128352.6903818,"caller":"etcdmain/etcd.go:72","msg":"Running: ","args":["./etcd","version"]} {"level":"warn","ts":1625128352.6904616,"caller":"etcdmain/etcd.go:74","msg":"failed to verify flags","error":"'version' is not a valid flag"}
Jul 01 16:28:54 ubuntu etcd[19548]: {"level":"fatal","ts":1625128134.5026824,"caller":"flags/flag.go:85","msg":"conflicting environment variable is shadowed by corresponding command-line flag (either unset environment variable or disable flag))","envir
Jul 01 16:28:54 ubuntu systemd[1]: etcd.service: Main process exited, code=exited, status=1/FAILURE
Jul 01 16:28:54 ubuntu systemd[1]: etcd.service: Failed with result 'exit-code'.
Jul 01 16:28:54 ubuntu systemd[1]: Failed to start Etcd Server.
etcd 3.4注意事项：
ETCD3.4版本ETCDCTL_API=3 etcdctl 和 etcd --enable-v2=false 成为了默认配置，如要使用v2版本，执行etcdctl时候需要设置ETCDCTL_API环境变量，例如：ETCDCTL_API=2 etcdctl
ETCD3.4版本会自动读取环境变量的参数，所以EnvironmentFile文件中有的参数，不需要再次在ExecStart启动参数中添加，二选一，如同时配置，会触发以下类似报错“etcd: conflicting environment variable “ETCD_NAME” is shadowed by corresponding command-line flag (either unset environment variable or disable flag)”
flannel操作etcd使用的是v2的API，而kubernetes操作etcd使用的v3的API
注意：flannel操作etcd使用的是v2的API，而kubernetes操作etcd使用的v3的API，为了兼容flannel，将默认开启v2版本，故需要配置文件/opt/soft/etcd/etcd.conf中设置 ETCD_ENABLE_V2=“true”
root@ubuntu:~/cfssl/etcd# etcd version {"level":"info","ts":1625130858.3037004,"caller":"etcdmain/etcd.go:72","msg":"Running: ","args":["etcd","version"]} {"level":"warn","ts":1625130858.3037755,"caller":"etcdmain/etcd.go:74","msg":"failed to verify flags","error":"'version' is not a valid flag"} root@ubuntu:~/cfssl/etcd# cat /etc/etcd/etcd.conf DATA_DIR="/data/k8s/etcd/data" ETCD_WAL_DIR="/data/k8s/etcd/wal" ETCD_LISTEN_PEER_URLS="https://10.10.16.82:2380" ETCD_LISTEN_CLIENT_URLS="https://10.10.16.82:2379" ETCD_MAX_SNAPSHOTS="5" ETCD_MAX_WALS="5" ETCD_NAME="etcd3" ETCD_SNAPSHOT_COUNT="100000" ETCD_HEARTBEAT_INTERVAL="100" ETCD_ELECTION_TIMEOUT="1000" ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.10.16.82:2380" ETCD_ADVERTISE_CLIENT_URLS="https://10.10.16.82:2379" ETCD_INITIAL_CLUSTER="etcd1=https://10.10.16.251:2380,etcd2=https://10.10.16.47:2380,etcd3=https://10.10.16.82:2380" ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" ETCD_INITIAL_CLUSTER_STATE="new" root@ubuntu:~/cfssl/etcd# cat /lib/systemd/system/etcd.service [Unit] Description=Etcd Server After=network.target After=network-online.target Wants=network-online.target [Service] Type=notify EnvironmentFile=/etc/etcd/etcd.conf ExecStart=/usr/bin/etcd --cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem --peer-cert-file=/opt/etcd/ssl/server.pem --peer-key-file=/opt/etcd/ssl/server-key.pem --trusted-ca-file=/opt/etcd/ssl/ca.pem --peer-trusted-ca-file=/opt/etcd/ssl/ca.pem Restart=on-failure LimitNOFILE=65536 [Install] WantedBy=multi-user.target root@ubuntu:~/cfssl/etcd# ps -elf | grep etcd 4 S root 31272 1 1 80 0 - 2803937 futex_ 17:10 ? 00:00:03 /usr/bin/etcd --cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem --peer-cert-file=/opt/etcd/ssl/server.pem --peer-key-file=/opt/etcd/ssl/server-key.pem --trusted-ca-file=/opt/etcd/ssl/ca.pem --peer-trusted-ca-file=/opt/etcd/ssl/ca.pem 0 S root 32305 12244 0 80 0 - 1096 pipe_w 17:14 pts/1 00:00:00 grep etcd root@ubuntu:~/cfssl/etcd# systemctl status etcd ● etcd.service - Etcd Server Loaded: loaded (/lib/systemd/system/etcd.service; enabled; vendor preset: enabled) Active: active (running) since Thu 2021-07-01 17:10:55 HKT; 4min 4s ago Main PID: 31272 (etcd) Tasks: 28 (limit: 9830) CGroup: /system.slice/etcd.service └─31272 /usr/bin/etcd --cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem --peer-cert-file=/opt/etcd/ssl/server.pem --peer-key-file=/opt/etcd/ssl/server-key.pem --trusted-ca-file=/opt/etcd/ssl/ca.pem --peer-trusted-c
root@ubuntu:~/cfssl/etcd# ETCDCTL_API=3 ./etcdctl --cacert ./etcd2/ca.pem --cert ./etcd2/server.pem --key ./etcd2/server-key.pem --endpoints=https://10.10.16.47:2379,https://10.10.16.251:2379,https://10.10.16.82:2379 endpoint status --write-out=table +---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ | ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS | +---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ | https://10.10.16.47:2379 | e3cc7a0fe07ff87b | 3.5.0 | 20 kB | true | false | 622 | 15 | 15 | | | https://10.10.16.251:2379 | 4b30b4d0c524f887 | 3.3.11 | 262 kB | false | false | 622 | 15 | 0 | | | https://10.10.16.82:2379 | 7f3a1eceedfff110 | 3.5.0 | 20 kB | false | false | 622 | 15 | 15 | | +---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ root@ubuntu:~/cfssl/etcd#
root@ubuntu:~/cfssl/etcd# ETCDCTL_API=3 ./etcdctl --cacert ./etcd2/ca.pem --cert ./etcd2/server.pem --key ./etcd2/server-key.pem --endpoints=https://10.10.16.47:2379,https://10.10.16.251:2379,https://10.10.16.82:2379 endpoint status --write-out=table +---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ | ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS | +---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ | https://10.10.16.47:2379 | e3cc7a0fe07ff87b | 3.5.0 | 4.7 MB | true | false | 622 | 7260 | 7260 | | | https://10.10.16.251:2379 | 4b30b4d0c524f887 | 3.3.11 | 6.1 MB | false | false | 622 | 7260 | 0 | | | https://10.10.16.82:2379 | 7f3a1eceedfff110 | 3.5.0 | 4.7 MB | false | false | 622 | 7260 | 7260 | | +---------------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ root@ubuntu:~/cfssl/etcd# ETCDCTL_API=3 ./etcdctl --cacert ./etcd2/ca.pem --cert ./etcd2/server.pem --key ./etcd2/server-key.pem --endpoints=https://10.10.16.47:2379,https://10.10.16.251:2379,https://10.10.16.82:2379 endpoint health https://10.10.16.82:2379 is healthy: successfully committed proposal: took = 27.201802ms https://10.10.16.47:2379 is healthy: successfully committed proposal: took = 27.041661ms https://10.10.16.251:2379 is healthy: successfully committed proposal: took = 35.976114ms root@ubuntu:~/cfssl/etcd# ETCDCTL_API=3 ./etcdctl --cacert ./etcd2/ca.pem --cert ./etcd2/server.pem --key ./etcd2/server-key.pem --endpoints=https://10.10.16.47:2379,https://10.10.16.251:2379,https://10.10.16.82:2379 member list 4b30b4d0c524f887, started, etcd1, https://10.10.16.251:2380, https://10.10.16.251:2379, false 7f3a1eceedfff110, started, etcd3, https://10.10.16.82:2380, https://10.10.16.82:2379, false e3cc7a0fe07ff87b, started, etcd2, https://10.10.16.47:2380, https://10.10.16.47:2379, false root@ubuntu:~/cfssl/etcd#