解决找不到/bootstrap-osd/ceph.keyring

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ceph-deploy mon create-initial 命令执行后， 如果提示：

[ceph_deploy.mon][INFO  ] Running gatherkeys...
[ceph_deploy.gatherkeys][DEBUG ] Checking manila59 for /etc/ceph/ceph.client.admin.keyring
[manila59][DEBUG ] connected to host: manila59 
[manila59][DEBUG ] detect platform information from remote host
[manila59][DEBUG ] detect machine type
[manila59][DEBUG ] fetch remote file
[ceph_deploy.gatherkeys][WARNIN] Unable to find /etc/ceph/ceph.client.admin.keyring on [‘manila59‘]
[ceph_deploy.gatherkeys][DEBUG ] Have ceph.mon.keyring
[ceph_deploy.gatherkeys][DEBUG ] Checking manila59 for /var/lib/ceph/bootstrap-osd/ceph.keyring
[manila59][DEBUG ] connected to host: manila59 
[manila59][DEBUG ] detect platform information from remote host
[manila59][DEBUG ] detect machine type
[manila59][DEBUG ] fetch remote file
[ceph_deploy.gatherkeys][WARNIN] Unable to find /var/lib/ceph/bootstrap-osd/ceph.keyring on [‘manila59‘]
[ceph_deploy.gatherkeys][DEBUG ] Checking manila59 for /var/lib/ceph/bootstrap-mds/ceph.keyring
[manila59][DEBUG ] connected to host: manila59 
[manila59][DEBUG ] detect platform information from remote host
[manila59][DEBUG ] detect machine type
[manila59][DEBUG ] fetch remote file
[ceph_deploy.gatherkeys][WARNIN] Unable to find /var/lib/ceph/bootstrap-mds/ceph.keyring on [‘manila59‘]

可以执行：
[root@manila59 deploy]# ceph-create-keys --id manila59

分析发现此处可能连接了外网，要确保DNS正常。

ceph-deploy osd prepare manila59:/dev/sdb命令后，如果提示：

[ceph_deploy][ERROR ] RuntimeError: bootstrap-osd keyring not found; run ‘gatherkeys‘

执行ceph-deploy gatherkeys manila59：

那么就会先找：/etc/ceph/ceph.client.admin.keyring，然后再找/var/lib/ceph/bootstrap-osd/ceph.keyring和/var/lib/ceph/bootstrap-mds/ceph.keyring ，最后发现ceph.bootstrap-mds.keyring key from manila59。

注意：disk zap 命令是不需要权限的，而osd prepare 需要bootstrap-mds.keyring。

解决找不到/bootstrap-osd/ceph.keyring

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原文地址：http://my.oschina.net/itfanr/blog/396717