Thanks Jake!  I enabled the epel 7 repo and was able to get ceph-common 
installed.  Here is what happens when I try to map the drive:

rbd map rbd/enterprise-vm0 --name client.admin -m mon0 -k 
/etc/ceph/ceph.client.admin.keyring 
rbd: sysfs write failed
In some cases useful info is found in syslog - try "dmesg | tail" or so.
rbd: map failed: (5) Input/output error

dmesg | tail:

[35034.469236] libceph: mon0 192.168.10.187:6789 socket error on read
[35044.469183] libceph: mon0 192.168.10.187:6789 feature set mismatch, my 
4a042a42 < server's 2004a042a42, missing 20000000000
[35044.469199] libceph: mon0 192.168.10.187:6789 socket error on read
[35054.469076] libceph: mon0 192.168.10.187:6789 feature set mismatch, my 
4a042a42 < server's 2004a042a42, missing 20000000000
[35054.469083] libceph: mon0 192.168.10.187:6789 socket error on read
[35064.469287] libceph: mon0 192.168.10.187:6789 feature set mismatch, my 
4a042a42 < server's 2004a042a42, missing 20000000000
[35064.469302] libceph: mon0 192.168.10.187:6789 socket error on read
[35074.469162] libceph: mon0 192.168.10.187:6789 feature set mismatch, my 
4a042a42 < server's 2004a042a42, missing 20000000000
[35074.469178] libceph: mon0 192.168.10.187:6789 socket error on read




> On Jun 30, 2016, at 6:15 PM, Jake Young <jak3...@gmail.com> wrote:
> 
> See https://www.mail-archive.com/ceph-users@lists.ceph.com/msg17112.html 
> <https://www.mail-archive.com/ceph-users@lists.ceph.com/msg17112.html>
> 
> 
> On Thursday, June 30, 2016, Mike Jacobacci <mi...@flowjo.com 
> <mailto:mi...@flowjo.com>> wrote:
> So after adding the ceph repo and enabling the cents-7 repo… It fails trying 
> to install ceph-common:
> 
> Loaded plugins: fastestmirror
> Loading mirror speeds from cached hostfile
>  * base: mirror.web-ster.com <http://mirror.web-ster.com/>
> Resolving Dependencies
> --> Running transaction check
> ---> Package ceph-common.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: python-cephfs = 1:10.2.2-0.el7 for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: python-rados = 1:10.2.2-0.el7 for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: librbd1 = 1:10.2.2-0.el7 for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libcephfs1 = 1:10.2.2-0.el7 for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: python-rbd = 1:10.2.2-0.el7 for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: librados2 = 1:10.2.2-0.el7 for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: python-requests for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libboost_program_options-mt.so.1.53.0()(64bit) for 
> package: 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: librgw.so.2()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libradosstriper.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libbabeltrace-ctf.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libboost_regex-mt.so.1.53.0()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libboost_iostreams-mt.so.1.53.0()(64bit) for 
> package: 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: librbd.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libtcmalloc.so.4()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: librados.so.2()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libbabeltrace.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Running transaction check
> ---> Package boost-iostreams.x86_64 0:1.53.0-25.el7 will be installed
> ---> Package boost-program-options.x86_64 0:1.53.0-25.el7 will be installed
> ---> Package boost-regex.x86_64 0:1.53.0-25.el7 will be installed
> ---> Package ceph-common.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libbabeltrace-ctf.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libbabeltrace.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> ---> Package gperftools-libs.x86_64 0:2.4-7.el7 will be installed
> --> Processing Dependency: libunwind.so.8()(64bit) for package: 
> gperftools-libs-2.4-7.el7.x86_64
> ---> Package libcephfs1.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libboost_random-mt.so.1.53.0()(64bit) for package: 
> 1:libcephfs1-10.2.2-0.el7.x86_64
> ---> Package librados2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librados2-10.2.2-0.el7.x86_64
> ---> Package libradosstriper1.x86_64 1:10.2.2-0.el7 will be installed
> ---> Package librbd1.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librbd1-10.2.2-0.el7.x86_64
> ---> Package librgw2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libfcgi.so.0()(64bit) for package: 
> 1:librgw2-10.2.2-0.el7.x86_64
> ---> Package python-cephfs.x86_64 1:10.2.2-0.el7 will be installed
> ---> Package python-rados.x86_64 1:10.2.2-0.el7 will be installed
> ---> Package python-rbd.x86_64 1:10.2.2-0.el7 will be installed
> ---> Package python-requests.noarch 0:2.6.0-1.el7_1 will be installed
> --> Processing Dependency: python-urllib3 >= 1.10.2-1 for package: 
> python-requests-2.6.0-1.el7_1.noarch
> --> Processing Dependency: python-chardet >= 2.2.1-1 for package: 
> python-requests-2.6.0-1.el7_1.noarch
> --> Running transaction check
> ---> Package boost-random.x86_64 0:1.53.0-25.el7 will be installed
> ---> Package ceph-common.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libbabeltrace-ctf.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libbabeltrace.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> ---> Package librados2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librados2-10.2.2-0.el7.x86_64
> ---> Package librbd1.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librbd1-10.2.2-0.el7.x86_64
> ---> Package librgw2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libfcgi.so.0()(64bit) for package: 
> 1:librgw2-10.2.2-0.el7.x86_64
> ---> Package libunwind.x86_64 0:1.1-5.el7 will be installed
> ---> Package python-chardet.noarch 0:2.2.1-1.el7_1 will be installed
> ---> Package python-urllib3.noarch 0:1.10.2-2.el7_1 will be installed
> --> Processing Dependency: python-six for package: 
> python-urllib3-1.10.2-2.el7_1.noarch
> --> Processing Dependency: python-backports-ssl_match_hostname for package: 
> python-urllib3-1.10.2-2.el7_1.noarch
> --> Running transaction check
> ---> Package ceph-common.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libbabeltrace-ctf.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libbabeltrace.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> ---> Package librados2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librados2-10.2.2-0.el7.x86_64
> ---> Package librbd1.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librbd1-10.2.2-0.el7.x86_64
> ---> Package librgw2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libfcgi.so.0()(64bit) for package: 
> 1:librgw2-10.2.2-0.el7.x86_64
> ---> Package python-backports-ssl_match_hostname.noarch 0:3.4.0.2-4.el7 will 
> be installed
> --> Processing Dependency: python-backports for package: 
> python-backports-ssl_match_hostname-3.4.0.2-4.el7.noarch
> ---> Package python-six.noarch 0:1.9.0-2.el7 will be installed
> --> Running transaction check
> ---> Package ceph-common.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libbabeltrace-ctf.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> --> Processing Dependency: libbabeltrace.so.1()(64bit) for package: 
> 1:ceph-common-10.2.2-0.el7.x86_64
> ---> Package librados2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librados2-10.2.2-0.el7.x86_64
> ---> Package librbd1.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 
> 1:librbd1-10.2.2-0.el7.x86_64
> ---> Package librgw2.x86_64 1:10.2.2-0.el7 will be installed
> --> Processing Dependency: libfcgi.so.0()(64bit) for package: 
> 1:librgw2-10.2.2-0.el7.x86_64
> ---> Package python-backports.x86_64 0:1.0-8.el7 will be installed
> --> Finished Dependency Resolution
> Error: Package: 1:librados2-10.2.2-0.el7.x86_64 (Ceph)
>            Requires: liblttng-ust.so.0()(64bit)
> Error: Package: 1:ceph-common-10.2.2-0.el7.x86_64 (Ceph)
>            Requires: libbabeltrace-ctf.so.1()(64bit)
> Error: Package: 1:ceph-common-10.2.2-0.el7.x86_64 (Ceph)
>            Requires: libbabeltrace.so.1()(64bit)
> Error: Package: 1:librgw2-10.2.2-0.el7.x86_64 (Ceph)
>            Requires: libfcgi.so.0()(64bit)
> Error: Package: 1:librbd1-10.2.2-0.el7.x86_64 (Ceph)
>            Requires: liblttng-ust.so.0()(64bit)
> 
> 
> Also, when I enabled the cents repo, there were no updates… I am going to try 
> the 7.2.1511 repo next.

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