centos - ceph mds服务启动centos 7失败

Question

我正在尝试在 Ceph Nautilus 14.2.19 上的 Centos 7 上手动创建 ceph-mds。
首先我在 /var/lib/ceph/mds 中创建了一个文件夹格式为 <clusterid>-mds.<hostid>然后运行以下命令:

ceph-authtool --create-keyring /var/lib/ceph/mds/ceph-mds.<hostid>/keyring --gen-key -n mds.<hostid>
ceph auth add mds.<hostid> osd "allow rwx" mds "allow *" mon "allow profile mds" -i /var/lib/ceph/mds/ceph-mds.<hostid>/keyring

然后我更改了 /var/lib/ceph/mds/ 内容的用户权限至 ceph:ceph .
当我检查 key 环和添加到 ceph auth list 上的 key 环时对于 mds，我可以确认它们是匹配的。
但是，当我运行 systemctl start ceph-mds@mds 时。守护进程没有启动，在 journalctl 上我得到以下错误输出:

Apr 20 11:38:14 <hostid> ceph-mds[44742]: 2021-04-20 11:38:14.592 7f53bcaef700 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [2]
Apr 20 11:38:14 <hostid> ceph-mds[44742]: failed to fetch mon config (--no-mon-config to skip).

systemctl status ceph-mds@mds. 的整个输出:

● ceph-mds@mds.<hostid>.service - Ceph metadata server daemon
   Loaded: loaded (/usr/lib/systemd/system/ceph-mds@.service; disabled; vendor preset: disabled)
   Active: failed (Result: start-limit) since Tue 2021-04-20 12:28:15 +03; 11min ago
  Process: 15564 ExecStart=/usr/bin/ceph-mds -f --cluster ${CLUSTER} --id %i --setuser ceph --setgroup ceph (code=exited, status=1/FAILURE)
 Main PID: 15564 (code=exited, status=1/FAILURE)

Apr 20 12:28:15 <hostid> systemd[1]: Unit ceph-mds@mds.<hostid>.service entered failed state.
Apr 20 12:28:15 <hostid> systemd[1]: ceph-mds@mds.<hostid>.service failed.
Apr 20 12:28:15 <hostid> systemd[1]: ceph-mds@mds.<hostid>.service holdoff time over, scheduling restart.
Apr 20 12:28:15 <hostid> systemd[1]: Stopped Ceph metadata server daemon.
Apr 20 12:28:15 <hostid> systemd[1]: start request repeated too quickly for ceph-mds@mds.<hostid>.service
Apr 20 12:28:15 <hostid> systemd[1]: Failed to start Ceph metadata server daemon.
Apr 20 12:28:15 <hostid> systemd[1]: Unit ceph-mds@mds.<hostid>.service entered failed state.
Apr 20 12:28:15 <hostid> systemd[1]: ceph-mds@mds.<hostid>.service failed.

这可能是什么原因？

Answer 1

解决。显然问题是因为 /var/lib/ceph/mds 中的目录命名错误。 .更改并重新启动服务后，它已修复。