mirror of https://github.com/ceph/ceph
159 lines
4.1 KiB
ReStructuredText
159 lines
4.1 KiB
ReStructuredText
=================================
|
|
Developer Guide (Quick)
|
|
=================================
|
|
|
|
This guide will describe how to build and test Ceph for development.
|
|
|
|
Development
|
|
-----------
|
|
|
|
The ``run-make-check.sh`` script will install Ceph dependencies,
|
|
compile everything in debug mode and run a number of tests to verify
|
|
the result behaves as expected.
|
|
|
|
.. prompt:: bash $
|
|
|
|
./run-make-check.sh
|
|
|
|
Optionally if you want to work on a specific component of Ceph,
|
|
install the dependencies and build Ceph in debug mode with required cmake flags.
|
|
|
|
Example:
|
|
|
|
.. prompt:: bash $
|
|
|
|
./install-deps.sh
|
|
./do_cmake.sh -DWITH_MANPAGE=OFF -DWITH_BABELTRACE=OFF -DWITH_MGR_DASHBOARD_FRONTEND=OFF
|
|
|
|
You can also turn off building of some core components that are not relevant to
|
|
your development:
|
|
|
|
.. prompt:: bash $
|
|
|
|
./do_cmake.sh ... -DWITH_RBD=OFF -DWITH_KRBD=OFF -DWITH_RADOSGW=OFF
|
|
|
|
Finally, build ceph:
|
|
|
|
.. prompt:: bash $
|
|
|
|
cmake --build build [--target <target>...]
|
|
|
|
Omit ``--target...`` if you want to do a full build.
|
|
|
|
|
|
Running a development deployment
|
|
--------------------------------
|
|
|
|
Ceph contains a script called ``vstart.sh`` (see also
|
|
:doc:`/dev/dev_cluster_deployment`) which allows developers to quickly test
|
|
their code using a simple deployment on your development system. Once the build
|
|
finishes successfully, start the ceph deployment using the following command:
|
|
|
|
.. prompt:: bash $
|
|
|
|
cd build
|
|
../src/vstart.sh -d -n
|
|
|
|
You can also configure ``vstart.sh`` to use only one monitor and one metadata server by using the following:
|
|
|
|
.. prompt:: bash $
|
|
|
|
env MON=1 MDS=1 ../src/vstart.sh -d -n -x
|
|
|
|
Most logs from the cluster can be found in ``build/out``.
|
|
|
|
The system creates two pools on startup: `cephfs_data_a` and `cephfs_metadata_a`. Let's get some stats on
|
|
the current pools:
|
|
|
|
.. code-block:: console
|
|
|
|
$ bin/ceph osd pool stats
|
|
*** DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
|
|
pool cephfs_data_a id 1
|
|
nothing is going on
|
|
|
|
pool cephfs_metadata_a id 2
|
|
nothing is going on
|
|
|
|
$ bin/ceph osd pool stats cephfs_data_a
|
|
*** DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
|
|
pool cephfs_data_a id 1
|
|
nothing is going on
|
|
|
|
$ bin/rados df
|
|
POOL_NAME USED OBJECTS CLONES COPIES MISSING_ON_PRIMARY UNFOUND DEGRADED RD_OPS RD WR_OPS WR
|
|
cephfs_data_a 0 0 0 0 0 0 0 0 0 0 0
|
|
cephfs_metadata_a 2246 21 0 63 0 0 0 0 0 42 8192
|
|
|
|
total_objects 21
|
|
total_used 244G
|
|
total_space 1180G
|
|
|
|
|
|
Make a pool and run some benchmarks against it:
|
|
|
|
.. prompt:: bash $
|
|
|
|
bin/ceph osd pool create mypool
|
|
bin/rados -p mypool bench 10 write -b 123
|
|
|
|
Place a file into the new pool:
|
|
|
|
.. prompt:: bash $
|
|
|
|
bin/rados -p mypool put objectone <somefile>
|
|
bin/rados -p mypool put objecttwo <anotherfile>
|
|
|
|
List the objects in the pool:
|
|
|
|
.. prompt:: bash $
|
|
|
|
bin/rados -p mypool ls
|
|
|
|
Once you are done, type the following to stop the development ceph deployment:
|
|
|
|
.. prompt:: bash $
|
|
|
|
../src/stop.sh
|
|
|
|
Resetting your vstart environment
|
|
---------------------------------
|
|
|
|
The vstart script creates out/ and dev/ directories which contain
|
|
the cluster's state. If you want to quickly reset your environment,
|
|
you might do something like this:
|
|
|
|
.. prompt:: bash [build]$
|
|
|
|
../src/stop.sh
|
|
rm -rf out dev
|
|
env MDS=1 MON=1 OSD=3 ../src/vstart.sh -n -d
|
|
|
|
Running a RadosGW development environment
|
|
-----------------------------------------
|
|
|
|
Set the ``RGW`` environment variable when running vstart.sh to enable the RadosGW.
|
|
|
|
.. prompt:: bash $
|
|
|
|
cd build
|
|
RGW=1 ../src/vstart.sh -d -n -x
|
|
|
|
You can now use the swift python client to communicate with the RadosGW.
|
|
|
|
.. prompt:: bash $
|
|
|
|
swift -A http://localhost:8000/auth -U test:tester -K testing list
|
|
swift -A http://localhost:8000/auth -U test:tester -K testing upload mycontainer ceph
|
|
swift -A http://localhost:8000/auth -U test:tester -K testing list
|
|
|
|
|
|
Run unit tests
|
|
--------------
|
|
|
|
The tests are located in `src/tests`. To run them type:
|
|
|
|
.. prompt:: bash $
|
|
|
|
(cd build && ninja check)
|