1.ceph报如下错误
[root@ceph-node1 ceph-cluster]# ceph-deploy new ceph-node1
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO ] Invoked (1.5.25): /usr/bin/ceph-deploy new ceph-node1
[ceph_deploy.new][DEBUG ] Creating new cluster named ceph
[ceph_deploy.new][INFO ] making sure passwordless SSH succeeds
[ceph_deploy][ERROR ] Traceback (most recent call last):
[ceph_deploy][ERROR ] File “/usr/lib/python2.7/site-packages/ceph_deploy/util/decorators.py”, line 69, in newfunc
[ceph_deploy][ERROR ] return f(*a, **kw)
[ceph_deploy][ERROR ] File “/usr/lib/python2.7/site-packages/ceph_deploy/cli.py”, line 162, in _main
[ceph_deploy][ERROR ] return args.func(args)
[ceph_deploy][ERROR ] File “/usr/lib/python2.7/site-packages/ceph_deploy/new.py”, line 141, in new
[ceph_deploy][ERROR ] ssh_copy_keys(host, args.username)
[ceph_deploy][ERROR ] File “/usr/lib/python2.7/site-packages/ceph_deploy/new.py”, line 35, in ssh_copy_keys
[ceph_deploy][ERROR ] if ssh.can_connect_passwordless(hostname):
[ceph_deploy][ERROR ] File “/usr/lib/python2.7/site-packages/ceph_deploy/util/ssh.py”, line 15, in can_connect_passwordless
[ceph_deploy][ERROR ] if not remoto.connection.needs_ssh(hostname):
[ceph_deploy][ERROR ] AttributeError: ‘module’ object has no attribute ‘needs_ssh’
解决方法：
检查ceph.repo文件是否无误
[ceph@ceph-node1 ceph-cluster]$ vi /etc/yum.repos.d/ceph.repo
[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-jewel/el7/x86_64/
gpgcheck=0
priority=1
[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-jewel/el7/noarch/
gpgcheck=0
priority=1
[ceph-source]
name=Ceph source packages
baseurl=http://mirrors.aliyun.com/ceph/rpm-jewel/el7/SRPMS
gpgcheck=0
[root@ceph-node1 ceph-cluster]# yum clean all
[root@ceph-node1 ceph-cluster]# yum makecache
[root@ceph-node1 ceph-cluster]# yum -y install ceph-deploy
再次执行" ceph-deploy new ceph-node1"就可以了
