Ceph » Stable releases

$ sudo apt-get install ceph-common
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ceph-common : Depends: librbd1 (= 0.80.10-1) but it is not going to be installed
               Depends: libboost-system1.55.0 but it is not installable
               Depends: libboost-thread1.55.0 but it is not installable
               Depends: libstdc++6 (>= 4.9) but 4.6.3-1ubuntu5 is to be installed
               Depends: python-ceph (= 0.80.10-1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

This is because of the Depends: line

Depends: librbd1 (= 0.80.10-1), libblkid1 (>= 2.17.2), libboost-system1.55.0, libboost-thread1.55.0, libc6 (>= 2.14), libgcc1 (>= 1:4.1.1), libgoogle-perftools4, libkeyutils1 (>= 1.4), libnspr4 (>= 2:4.9-2~) | libnspr4-0d (>= 1.8.0.10), libnss3 (>= 2:3.13.4-2~) | libnss3-1d (>= 3.12.0~1.9b1), librados2, libstdc++6 (>= 4.9), libuuid1 (>= 2.16), python-ceph (= 0.80.10-1), python-requests

These two libboost libraries are not available in precise.

Note the package version "0.80.10-1".

In the past, the Ceph precise packages have had precise appended to them e.g. "0.80.9-1precise" and were built against the precise versions of libboost-thread