docker - 使用 “etcdctl member add”时，CoreOS成员节点将无法启动

Question

我正在尝试使用命令“etcdctl member add core2 http://172.31.12.183:2380”向我的CoreOS集群中添加一个附加的etcd节点，但是此命令使我的新节点处于未启动状态，因此集群不正常。运行etcdctl member add命令后，如何解决此问题或启动新节点？这是我运行此命令时的输出以及之后的群集状态:

core@ip-172-31-12-183 ~ $ etcdctl member add core2 http://172.31.12.183:2380
Added member named core2 with ID 4d14f3cb088a2f54 to cluster

ETCD_NAME="core2"
ETCD_INITIAL_CLUSTER="core2=http://172.31.12.183:2380,ec2c8c9d2cf141cf9657e98b260895a5=http://172.31.12.182:2380"
ETCD_INITIAL_CLUSTER_STATE="existing"
core@ip-172-31-12-183 ~ $ etcdctl member list
4d14f3cb088a2f54[unstarted]: peerURLs=http://172.31.12.183:2380
aedf0a441a723d8a: name=ec2c8c9d2cf141cf9657e98b260895a5 peerURLs=http://172.31.12.182:2380 clientURLs=http://172.31.12.182:2379,http://172.31.12.182:4001
core@ip-172-31-12-183 ~ $ etcdctl cluster-health
member 4d14f3cb088a2f54 is unreachable: no available published client urls
member aedf0a441a723d8a is unhealthy: got unhealthy result from http://172.31.12.182:2379
cluster is unhealthy

Answer 1

简而言之，您添加成员的步骤是错误的。
与官方的docs一样，我假定的add a new member to a 1-node cluster步骤是您的情况:

启动第一个节点

运行etcdctl member add

使用与群集相关的选项

启动第二个节点

因此，根据您的情况:

在启动 core2之前，运行=>

etcdctl member add core2 http://172.31.12.183:2380  

然后，使用与群集相关的选项启动 core2 =>

./etcd --name core2 --initial-advertise-peer-urls http://172.31.12.183:2380 \
  --listen-peer-urls http://172.31.12.183:2380 \
  --listen-client-urls http://172.31.12.183:2379 \
  --advertise-client-urls http://172.31.12.183:2379 \
  --initial-cluster core2=http://172.31.12.183:2380,ec2c8c9d2cf141cf9657e98b260895a5=http://172.31.12.182:2380 \
  --initial-cluster-state existing