1、在不同节点安装ceph时，出现以下异常：
参考这里
ceph deploy RuntimeError: NoSectionError: No section: 'ceph'
解决方法：
在报错的机器上尝试：
yum remove ceph-release
rm /etc/yum.repos.d/ceph.repo.rpmsave
执行以后再执行
ceph-deploy install admin node1 node2 node3
2、ceph用户没有权限
执行激活osd盘时出现
ceph-deploy osd activate node2:/var/local/osd0 node3:/var/local/osd1
[node3][WARNIN] ceph_disk.main.Error: Error: ['ceph-osd', '--cluster', 'ceph', '--mkfs', '--mkkey', '-i', '1', '--monmap', '/var/local/osd1/activate.monmap', '--osd-data', '/var/local/osd1', '--osd-journal', '/var/local/osd1/journal', '--osd-uuid', 'ee9c4a6c-e2b5-46cd-9e91-fd5d6f36fd57', '--keyring', '/var/local/osd1/keyring', '--setuser', 'ceph', '--setgroup', 'ceph'] failed : 2016-08-31 16:38:58.909449 7f48adbb7800 -1 filestore(/var/local/osd1) mkfs: write_version_stamp() failed: (13) Permission denied
[node3][WARNIN] 2016-08-31 16:38:58.909475 7f48adbb7800 -1 OSD::mkfs: ObjectStore::mkfs failed with error -13
[node3][WARNIN] 2016-08-31 16:38:58.909529 7f48adbb7800 -1 ** ERROR: error creating empty object store in /var/local/osd1: (13) Permission denied
[node3][WARNIN]
[node3][ERROR ] RuntimeError: command returned non-zero exit status: 1
[ceph_deploy][ERROR ] RuntimeError: Failed to execute command: /usr/sbin/ceph-disk -v activate --mark-init systemd --mount /var/local/osd1
解决方法
chown ceph:ceph /var/local/osd0
chown ceph:ceph /var/local/osd1
创建成功ceph健康状况良好
3、RuntimeError: bootstrap-rgw keyring not found; run 'gatherkeys'
root@admin ceph]# ceph-deploy rgw create node2
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO ] Invoked (1.5.34): /usr/bin/ceph-deploy rgw create node2
[ceph_deploy.cli][INFO ] ceph-deploy options:
[ceph_deploy.cli][INFO ] username : None
[ceph_deploy.cli][INFO ] verbose : False
[ceph_deploy.cli][INFO ] rgw : [('node2', 'rgw.node2')]
[ceph_deploy.cli][INFO ] overwrite_conf : False
[ceph_deploy.cli][INFO ] subcommand : create
[ceph_deploy.cli][INFO ] quiet : False
[ceph_deploy.cli][INFO ] cd_conf : <ceph_deploy.conf.cephdeploy.Conf instance at 0x24aed88>
[ceph_deploy.cli][INFO ] cluster : ceph
[ceph_deploy.cli][INFO ] func : <function rgw at 0x241da28>
[ceph_deploy.cli][INFO ] ceph_conf : None
[ceph_deploy.cli][INFO ] default_release : False
[ceph_deploy.rgw][DEBUG ] Deploying rgw, cluster ceph hosts node2:rgw.node2
[ceph_deploy][ERROR ] RuntimeError: bootstrap-rgw keyring not found; run 'gatherkeys'
执行如下命令解决
ceph-deploy gatherkeys node2