7ce770d9c2
Output health summary to clog on Monitor::get_health() (called during, e.g., 'ceph -s', 'ceph health' and alikes) if 'mon_health_to_clog' is true (default: false) and if last update is at least 'mon_health_to_clog_interval' old (default: 60.0 (seconds)). This patch is far from optimal for several reasons though: 1. health summary is still generated on-the-fly by the monitor each time Monitor::get_health() is called. 2. health summary will only be outputted to clog IF and WHEN Monitor::get_health() is called. 3. patch does not account for duplicate summaries. We may have the same string outputted every time Monitor::get_health() is called (as long as enough time passed since we last wrote to clog) 4. each monitor will output to clog independently from the other monitors. This means that running a 'ceph -s' 3 times in a row, on a cluster with at least 3 monitors, may result in writing the same string 3 times. 5. We reduce the amount of writes to clog by caching the last overall health status. We only write to clog if the overall status is different from the cached value OR enough time has passed since we last wrote to clog. This may result in ignoring new contributing factors to overall cluster health that by themselves do not change the overall status; and even though we will pick on them once enough time has passed, we may end up losing intermediate states (which may be good if they're transient, but not as awesome if they reflect some kind of instability). Fixes: #9440 (even if in a poor manner) Signed-off-by: Joao Eduardo Luis <joao@redhat.com> |
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|---|---|---|
| admin | ||
| ceph-erasure-code-corpus@f1f95a1de9 | ||
| ceph-object-corpus@da43eb1195 | ||
| debian | ||
| doc | ||
| examples | ||
| fusetrace | ||
| keys | ||
| m4 | ||
| man | ||
| qa | ||
| rpm | ||
| share | ||
| src | ||
| systemd | ||
| udev | ||
| .gitignore | ||
| .gitmodule_mirrors | ||
| .gitmodules | ||
| .mailmap | ||
| .organizationmap | ||
| .peoplemap | ||
| AUTHORS | ||
| autogen.sh | ||
| ceph.spec.in | ||
| ChangeLog | ||
| CodingStyle | ||
| configure.ac | ||
| CONTRIBUTING.rst | ||
| COPYING | ||
| COPYING-LGPL2.1 | ||
| do_autogen.sh | ||
| doc_deps.deb.txt | ||
| Doxyfile | ||
| INSTALL | ||
| install-deps.sh | ||
| make-debs.sh | ||
| Makefile.am | ||
| NEWS | ||
| PendingReleaseNotes | ||
| pom.xml | ||
| README | ||
| README.md | ||
| run-make-check.sh | ||
| SubmittingPatches | ||
============================================ Ceph - a scalable distributed storage system
Please see http://ceph.com/ for current info.
Contributing Code
Most of Ceph is licensed under the LGPL version 2.1. Some miscellaneous code is under BSD-style license or is public domain. The documentation is licensed under Creative Commons Attribution-ShareAlike (CC BY-SA). There are a handful of headers included here that are licensed under the GPL. Please see the file COPYING for a full inventory of licenses by file.
Code contributions must include a valid "Signed-off-by" acknowledging the license for the modified or contributed file. Please see the file SubmittingPatches for details on what that means and on how to generate and submit patches.
We do not require assignment of copyright to contribute code; code is contributed under the terms of the applicable license.
Build Prerequisites
debian-based
The list of debian packages dependencies can be installed with:
./install-deps.sh
Note: libsnappy-dev and libleveldb-dev are not available upstream for natty, oneiric, and squeeze. Backports for Ceph can be found at ceph.com/debian-leveldb.
rpm-based
The list of RPM packages dependencies can be installed with:
./install-deps.sh
Building Ceph
Developers, please refer to the Developer Guide for more information, otherwise, you can build the server daemons, and FUSE client, by executing the following:
./autogen.sh
./configure
make
(Note that the FUSE client will only be built if libfuse is present.)
Dependencies
The configure script will complain about any missing dependencies as it goes. You can also refer to debian/control or ceph.spec.in for the package build dependencies on those platforms. In many cases, dependencies can be avoided with --with-foo or --without-bar switches. For example,
./configure --with-nss # use libnss instead of libcrypto++
./configure --without-radosgw # do not build radosgw
./configure --without-tcmalloc # avoid google-perftools dependency
Building packages
You can build packages for Debian or Debian-derived (e.g., Ubuntu) systems with
sudo apt-get install dpkg-dev
dpkg-checkbuilddeps # make sure we have all dependencies
dpkg-buildpackage
For RPM-based systems (Red Hat, SUSE, etc.),
rpmbuild
Building the Documentation
Prerequisites
The list of package dependencies for building the documentation can be found in doc_deps.deb.txt:
sudo apt-get install `cat doc_deps.deb.txt`
Building the Documentation
To build the documentation, ensure that you are in the top-level `/ceph directory, and execute the build script. For example:
admin/build-doc