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|  | <h2>stackrc <small>DevStack settings</small></h2> | 
|  | <p><code>stackrc</code> is the primary configuration file for DevStack. | 
|  | It contains all of the settings that control the services started | 
|  | and the repositories used to download the source for those services. | 
|  | <code>stackrc</code> sources the <code>localrc</code> section of | 
|  | <code>local.conf</code> to perform the default overrides.</p> | 
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|  | <dt>DATABASE_TYPE</dt> | 
|  | <dd>Select the database backend to use.  The default is <code>mysql</code>, | 
|  | <code>postgresql</code> is also available.</dd> | 
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|  | <dt>ENABLED_SERVICES</dt> | 
|  | <dd>Specify which services to launch.  These generally correspond to | 
|  | screen tabs. | 
|  | The default includes: Glance (API and Registry), Keystone, Nova (API, | 
|  | Certificate, Object Store, Compute, Network, Scheduler, VNC proxies, | 
|  | Certificate Authentication), Cinder (Scheduler, API, Volume), Horizon, MySQL, RabbitMQ, Tempest. | 
|  | <pre>ENABLED_SERVICES=g-api,g-reg,key,n-api,n-crt,n-obj,n-cpu,n-net,n-cond,cinder,c-sch,c-api,c-vol,n-sch,n-novnc,n-xvnc,n-cauth,horizon,rabbit,tempest,$DATABASE_TYPE</pre> | 
|  | Other services that are not enabled by default can be enabled in | 
|  | <code>localrc</code>. For example, to add Swift: | 
|  | <pre>enable_service swift</pre> | 
|  | A service can similarly be disabled: | 
|  | <pre>disable_service horizon</pre></dd> | 
|  |  | 
|  | <dt>Service Repos</dt> | 
|  | <dd>The Git repositories used to check out the source for each service | 
|  | are controlled by a pair of variables set for each service. | 
|  | <code>*_REPO</code> points to the repository and <code>*_BRANCH</code> | 
|  | selects which branch to check out.  These may be overridden in | 
|  | <code>local.conf</code> to pull source from a different repo for testing, | 
|  | such as a Gerrit branch proposal.  <code>GIT_BASE</code> points to the primary repository server. | 
|  | <pre>NOVA_REPO=$GIT_BASE/openstack/nova.git | 
|  | NOVA_BRANCH=master</pre> | 
|  | To pull a branch directly from Gerrit, get the repo and branch from the | 
|  | Gerrit review page: | 
|  | <pre>git fetch https://review.openstack.org/p/openstack/nova refs/changes/50/5050/1 && git checkout FETCH_HEAD</pre> | 
|  | The repo is the stanza following <code>fetch</code> and the branch | 
|  | is the stanza following that: | 
|  | <pre>NOVA_REPO=https://review.openstack.org/p/openstack/nova | 
|  | NOVA_BRANCH=refs/changes/50/5050/1</pre></dd> | 
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