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= slavealloc = | = slavealloc = | ||
(still being deployed .. so at the moment | (still being deployed .. so at the moment much of this is future) | ||
== Application Description == | == Application Description == | ||
Slavealloc is a client-server application. The client is [http://hg.mozilla.org/build/puppet-manifests/file/tip/modules/buildslave/files/runslave.py runslave.py]. Communication is via a very basic HTTP request to http://slavealloc.build.mozilla.org/production/gettac/$slavename, where the response is expected to be a <tt>buildbot.tac</tt> file suitable for use to start buildslave. | Slavealloc is a client-server application. The client is [http://hg.mozilla.org/build/puppet-manifests/file/tip/modules/buildslave/files/runslave.py runslave.py]. Communication is via a very basic HTTP request to http://slavealloc.build.mozilla.org/production/gettac/$slavename, where the response is expected to be a <tt>buildbot.tac</tt> file suitable for use to start buildslave. | ||
The slavealloc server is a implemented as a small Twisted application ([http://hg.mozilla.org/build/tools/file/tip/slavealloc source]) which serves the tac generator, a JSON REST interface, and a client-side JavaScript interface. | The slavealloc server is a implemented as a small Twisted application ([http://hg.mozilla.org/build/tools/file/tip/lib/python/slavealloc source]) which serves the tac generator, a JSON REST interface, and a client-side JavaScript interface. | ||
The same source code also implements a command-line frontend to the REST interface. | The same source code also implements a command-line frontend to the REST interface. | ||
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The 'slavealloc' user runs the twisted daemon on this host. The user account is locked and accessed only via su from root. | The 'slavealloc' user runs the twisted daemon on this host. The user account is locked and accessed only via su from root. | ||
The daemon is installed in a virtualenv at <tt>/tools/slavealloc-$rev</tt>, using the pre-checked python packages on the puppet server: | The daemon is installed in a virtualenv at <tt>/tools/slavealloc-$rev</tt>, using the pre-checked python packages on the puppet server. Note that <tt>--no-site-packages</tt> is ''not'' used here, because we need access to the (binary) MySQL-python package which is installed systemwide: | ||
cd /tools | cd /tools | ||
virtualenv -- | virtualenv slavealloc-8fe4dbc09d03 | ||
ln -s slavealloc-8fe4dbc09d03 slavealloc | |||
/slavealloc-8fe4dbc09d03/bin/pip install -e hg+http://hg.mozilla.org/build/tools@8fe4dbc09d03#egg=tools \ | /slavealloc-8fe4dbc09d03/bin/pip install -e hg+http://hg.mozilla.org/build/tools@8fe4dbc09d03#egg=tools \ | ||
--no-index --find-links=http://staging-puppet.build.mozilla.org/staging/python-packages/ | --no-index --find-links=http://staging-puppet.build.mozilla.org/staging/python-packages/ | ||
Once this was set up, the 'slavealloc dbinit' command was used to initialize the database. | |||
The production and staging tac files are in <tt>/build/slavealloc</tt>. Staging runs on port 1079, and production runs on 1080. | |||
TODO (temp) | |||
* initscript | |||
* nginx | |||
* set up production | |||
== External Resources == | == External Resources == | ||
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Note that due to what I believe to be a bug in pip, you may need to explicitly install Twisted to get the twistd executable installed: | Note that due to what I believe to be a bug in pip, you may need to explicitly install Twisted to get the twistd executable installed: | ||
pip install -U twisted | pip install -U twisted | ||
To set up a fresh database, use | |||
sandbox/bin/slavealloc dbinit -D sqlite:///slavealloc.db | |||
This configuration will use SQLite to access {{{slavealloc.db}}} in the current directory. You can hack on the static web content while the daemon is running. | This configuration will use SQLite to access {{{slavealloc.db}}} in the current directory. You can hack on the static web content while the daemon is running. | ||