如何在多个实例中运行 etcd？

Question

我正在尝试在 AWS 中使用 3 个实例运行 etcd，但是当我尝试列出成员时出现以下错误：

[ec2-user@etcd1 ~]$ etcdctl 成员列表 {"level":"warn","ts":"2021-10-19T04:50:01.981Z","logger":"etcd-client","caller ":"v3/retry_interceptor.go:62","msg":"重试一元调用失败","target":"etcd-endpoints://0xc0002e0a80/127.0.0.1:2379","attempt":0, “错误”：“rpc 错误：代码 = DeadlineExceeded desc = 超出上下文截止日期”} 错误：超出上下文截止日期

我正在使用以下命令启动我的实例：

实例 1：

etcd --data-dir=data.etcd --name etcd1
--initial-advertise-peer-urls http://localhost:2380 --listen-peer-urls http://localhost:2380
--advertise-client-urls http://localhost:2379 --listen-client-urls http://localhost:2379
--initial-cluster etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
--initial-cluster-state new --initial-cluster-token token-01

实例2：

etcd --data-dir=data.etcd --name etcd2
--initial-advertise-peer-urls http://localhost:2380 --listen-peer-urls http://localhost:2380
--advertise-client-urls http://localhost:2379 --listen-client-urls http://localhost:2379
--initial-cluster etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
--initial-cluster-state new --initial-cluster-token token-01

实例3：

etcd --data-dir=data.etcd --name etcd3
--initial-advertise-peer-urls http://localhost:2380 --listen-peer-urls http://localhost:2380
--advertise-client-urls http://localhost:2379 --listen-client-urls http://localhost:2379
--initial-cluster etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
--initial-cluster-state new --initial-cluster-token token-01

请让我知道你是否知道我做错了什么。

Answer 1

对我来说，您似乎遵循了https://etcd.io/docs/v3.5/demo/#set-up-a-cluster ，如果是这种情况，您应该更改两件事：

1. 当它应该是可从集群中的每个${THIS_IP} IP 地址时，您使用localhost代替${THIS_IP}变量（只要可访问，它可以是公共或私有地址）
2. 您在--initial-cluster选项中使用了etcdX ，这些应该是 vm 的 IP，而不是 etcd 成员的名称

我建议在每个虚拟机中设置这些变量：

TOKEN=token-01
CLUSTER_STATE=new
NAME_1=etcd1
NAME_2=etcd2
NAME_3=etcd3
HOST_1=10.240.0.17 # <- should be ip of 1st vm
HOST_2=10.240.0.18 # <- should be ip of 2nd vm
HOST_3=10.240.0.19 # <- should be ip of 3rd vm
CLUSTER=${NAME_1}=http://${HOST_1}:2380,${NAME_2}=http://${HOST_2}:2380,${NAME_3}=http://${HOST_3}:2380

然后使用以下命令为 etcd1 启动 etcd

THIS_NAME=${NAME_1}
THIS_IP=${HOST_1}
etcd --data-dir=data.etcd --name ${THIS_NAME} \
    --initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://${THIS_IP}:2380 \
    --advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://${THIS_IP}:2379 \
    --initial-cluster ${CLUSTER} \
    --initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}

下面是 etcd2 的命令

THIS_NAME=${NAME_2}
THIS_IP=${HOST_2}
etcd --data-dir=data.etcd --name ${THIS_NAME} \
    --initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://${THIS_IP}:2380 \
    --advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://${THIS_IP}:2379 \
    --initial-cluster ${CLUSTER} \
    --initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}

及以下用于 etcd3

THIS_NAME=${NAME_3}
THIS_IP=${HOST_3}
etcd --data-dir=data.etcd --name ${THIS_NAME} \
    --initial-advertise-peer-urls http://${THIS_IP}:2380 --listen-peer-urls http://${THIS_IP}:2380 \
    --advertise-client-urls http://${THIS_IP}:2379 --listen-client-urls http://${THIS_IP}:2379 \
    --initial-cluster ${CLUSTER} \
    --initial-cluster-state ${CLUSTER_STATE} --initial-cluster-token ${TOKEN}

Answer 2

谢谢你。 我按照你提到的方式执行了命令，但现在我遇到了其他错误：

{"level":"info","ts":"2021-10-19T11:38:23.882Z","caller":"etcdmain/etcd.go:72","msg":"运行："," args":["etcd","--data-dir=data.etcd","--name","etcd1","--initial-advertise-peer-urls","http://13.58.134.34 :2380","--listen-peer-urls","http://13.58.134.34:2380","--advertise-client-urls","http://13.58.134.34:2379","- -listen-client-urls","http://13.58.134.34:2379","--initial-cluster","etcd1=http://13.58.134.34:2380,etcd2=http://18.118.5.45 :2380,etcd3=http://18.119.98.88:2380","--initial-cluster-state","new","--initial-cluster-token","token-01"]} {"level ":"info","ts":"2021-10-19T11:38:23.882Z","caller":"etcdmain/etcd.go:115","msg":"服务器已经初始化"," data-dir":"data.etcd","dir-type":"member"} {"level":"info","ts":"2021-10-19T11:38:23.882Z","caller" :"embed/etcd.go:131","msg":"配置对等监听器","listen-peer-urls":["http://13.58.134.34:2380"]} {"level":"info ","ts":"2021-10-19T11:38:23.882Z","caller":"embed/etcd.go:367","msg":"关闭 etcd 服务器","name":"etcd1" ,”数据 a-dir":"data.etcd","advertise-peer-urls":["http://13.58.134.34:2380"],"advertise-client-urls":["http://13.58.134.34 :2379"]} {"level":"info","ts":"2021-10-19T11:38:23.883Z","caller":"embed/etcd.go:369","msg":"关闭 etcd 服务器","name":"etcd1","data-dir":"data.etcd","advertise-peer-urls":["http://13.58.134.34:2380"],"advertise- client-urls":["http://13.58.134.34:2379"]} {"level":"fatal","ts":"2021-10-19T11:38:23.883Z","caller":" etcdmain/etcd.go:203","msg":"发现失败","error":"listen tcp 13.58.134.34:2380: bind: 无法分配请求的地址","stacktrace":"go.etcd.io/ etcd/server/v3/etcdmain.startEtcdOrProxyV2\\n\\t/tmp/etcd-release-3.5.1/etcd/release/etcd/server/etcdmain/etcd.go:203\\ngo.etcd.io/etcd/server/ v3/etcdmain.Main\\n\\t/tmp/etcd-release-3.5.1/etcd/release/etcd/server/etcdmain/main.go:40\\nmain.main\\n\\t/tmp/etcd-release- 3.5.1/etcd/release/etcd/server/main.go:32\\nruntime.main\\n\\t/home/remote/sbatsche/.gvm/gos/go1.16.3/src/runtime/proc.go:225 "}