cephadm:无法将节点添加到ceph集群(错误EINVAL:无法连接到主机)
cephadm:无法将节点添加到ceph集群(错误EINVAL:无法连接到主机)
提问于 2020-11-11 16:50:49
我按照https://docs.ceph.com/en/latest/cephadm/install/中的以下步骤在CentOS8.1上设置了ceph集群
curl --silent --remote-name --location https://github.com/ceph/ceph/raw/octopus/src/cephadm/cephadm
chmod +x cephadm
./cephadm add-repo --release octopus
./cephadm install执行完上述命令后，我发现ceph需要docker或podman才能运行。因此，我从https://docs.docker.com/engine/install/centos/安装了docker的社区版本，并继续执行以下步骤。
./cephadm install
mkdir -p /etc/ceph
cephadm bootstrap --mon-ip *ip_of_the_current_machine (host1)*
cephadm install ceph-common
ssh-copy-id -f -i /etc/ceph/ceph.pub root@host2*
ceph orch host add host2上述命令失败，并显示以下错误
[root@host1 home]# ceph orch host add host2
INFO:cephadm:Inferring fsid 12345678-2345-6789-1011-000129110013
INFO:cephadm:Inferring config /var/lib/ceph/12345678-2345-6789-1011-000129110013/mon.host1/config
INFO:cephadm:Using recent ceph image ceph/ceph:v15
Error EINVAL: Failed to connect to host2 (host2).
Check that the host is reachable and accepts connections using the cephadm SSH key
you may want to run:
> ceph cephadm get-ssh-config > ssh_config
> ceph config-key get mgr/cephadm/ssh_identity_key > key
> ssh -F ssh_config -i key root@host2我可以使用上述步骤登录到host2。有没有人能告诉我是不是做错了什么。我该如何解决这个问题。
回答 3
Stack Overflow用户
回答已采纳
发布于 2020-11-20 20:20:33
因此，经过几天的调试，我发现我想添加的节点上缺少python3。我所要做的就是使用命令检查最后几个日志。
ceph log last cephadm这给出了以下日志消息。
Traceback (most recent call last):
File "/usr/share/ceph/mgr/cephadm/module.py", line 1036, in _remote_connection
raise execnet.gateway_bootstrap.HostNotFound(msg)
execnet.gateway_bootstrap.HostNotFound: Can't communicate with remote host `host2`, possibly because python3 is not installed there: cannot send (already closed?)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 295, in _finalize
next_result = self._on_complete(self._value)
File "/usr/share/ceph/mgr/cephadm/module.py", line 103, in <lambda>
return CephadmCompletion(on_complete=lambda _: f(*args, **kwargs))
File "/usr/share/ceph/mgr/cephadm/module.py", line 1201, in add_host
return self._add_host(spec)
File "/usr/share/ceph/mgr/cephadm/module.py", line 1187, in _add_host
error_ok=True, no_fsid=True)
File "/usr/share/ceph/mgr/cephadm/module.py", line 1104, in _run_cephadm
with self._remote_connection(host, addr) as tpl:
File "/lib64/python3.6/contextlib.py", line 81, in __enter__
return next(self.gen)
File "/usr/share/ceph/mgr/cephadm/module.py", line 1055, in _remote_connection
raise OrchestratorError(msg) from e
orchestrator._interface.OrchestratorError: Failed to connect to host2 (host2).
Check that the host is reachable and accepts connections using the cephadm SSH key接下来添加我运行的节点。
ceph orch host add host2 ip_addressStack Overflow用户
发布于 2021-01-13 23:59:36
我也遇到过同样的问题，但我最主要的错误信息是
2021-01-13T15:21:13.071913+0000 mgr.ha1.qzzjzw (mgr.18492) 167366 : cephadm [ERR] _Promise failed
Traceback (most recent call last):
File "/lib/python3.6/site-packages/execnet/gateway_bootstrap.py", line 48, in bootstrap_exec
s = io.read(1)
File "/lib/python3.6/site-packages/execnet/gateway_base.py", line 402, in read
raise EOFError("expected %d bytes, got %d" % (numbytes, len(buf)))
EOFError: expected 1 bytes, got 0而解决方法也对我很有帮助。
ceph orch host add host2 ip_addressStack Overflow用户
发布于 2021-05-13 00:07:27
在debian 10上使用cephadm时，我遇到了与Oleg相同的问题。
解决方法是添加IP地址。
sudo ./cephadm shell
ceph orch host add host2 ip_address
Added host 'host2'页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/64783203
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