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