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<li class="toctree-l1 current"><a class="current reference internal" href="#">17. Inventory</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#cdist-inventory-interface">17.3. cdist inventory interface</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#configuring-hosts-using-inventory">17.4. Configuring hosts using inventory</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#example-of-manipulating-database">17.6. Example of manipulating database</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#using-external-inventory">17.7. Using external inventory</a></li>
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<div class="section" id="inventory">
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<h1>17. Inventory<a class="headerlink" href="#inventory" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="introduction">
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<h2>17.1. Introduction<a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2>
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<p>cdist comes with simple built-in tag based inventory. It is a simple inventory
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with list of hosts and a host has a list of tags.
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Inventory functionality is still in <strong>beta</strong> so it can be used only if beta
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command line flag is specified (-b, --beta) or setting CDIST_BETA env var.</p>
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</div>
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<div class="section" id="description">
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<h2>17.2. Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
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<p>The idea is to have simple tagging inventory. There is a list of hosts and for
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each host there are tags. Inventory database is a set of files under inventory
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database base directory. Filename equals hostname. Each file contains tags for
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hostname with each tag on its own line.</p>
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<p>Using inventory you can now configure hosts by selecting them by tags.</p>
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<p>Tags have no values, as tags are just tags. Tag name-value would in this
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context mean that host has two tags and it is selected by specifying that both
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tags are present.</p>
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<p>This inventory is <strong>KISS</strong> cdist built-in inventory database. You can maintain it
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using cdist inventory interface or using standard UNIX tools.</p>
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</div>
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<div class="section" id="cdist-inventory-interface">
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<h2>17.3. cdist inventory interface<a class="headerlink" href="#cdist-inventory-interface" title="Permalink to this headline">¶</a></h2>
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<p>With cdist inventory interface you can list host(s) and tag(s), add host(s),
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add tag(s), delete host(s) and delete tag(s).</p>
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</div>
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<div class="section" id="configuring-hosts-using-inventory">
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<h2>17.4. Configuring hosts using inventory<a class="headerlink" href="#configuring-hosts-using-inventory" title="Permalink to this headline">¶</a></h2>
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<p>config command now has new options, <strong>-t</strong>, <strong>-a</strong> and <strong>-A</strong>.</p>
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<p><strong>-A</strong> means that all hosts in tag db is selected.</p>
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<p><strong>-a</strong> means that selected hosts must contain ALL specified tags.</p>
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<p><strong>-t</strong> means that host specifies tag - all hosts that have specified tags are
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selected.</p>
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</div>
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<div class="section" id="examples">
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<h2>17.5. Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
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<div class="highlight-sh"><div class="highlight"><pre><span></span><span class="c1"># List inventory content</span>
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$ cdist inventory list -b
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<span class="c1"># List inventory for specified host localhost</span>
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$ cdist inventory list -b localhost
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<span class="c1"># List inventory for specified tag loadbalancer</span>
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$ cdist inventory list -b -t loadbalancer
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<span class="c1"># Add hosts to inventory</span>
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$ cdist inventory add-host -b web1 web2 web3
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<span class="c1"># Delete hosts from file old-hosts from inventory</span>
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$ cdist inventory del-host -b -f old-hosts
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<span class="c1"># Add tags to specifed hosts</span>
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$ cdist inventory add-tag -b -t europe,croatia,web,static web1 web2
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<span class="c1"># Add tag to all hosts in inventory</span>
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$ cdist inventory add-tag -b -t vm
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<span class="c1"># Delete all tags from specified host</span>
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$ cdist inventory del-tag -b -a localhost
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<span class="c1"># Delete tags read from stdin from hosts specified by file hosts</span>
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$ cdist inventory del-tag -b -T - -f hosts
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<span class="c1"># Configure hosts from inventory with any of specified tags</span>
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$ cdist config -b -t web dynamic
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<span class="c1"># Configure hosts from inventory with all specified tags</span>
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$ cdist config -b -t -a web dynamic
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<span class="c1"># Configure all hosts from inventory db</span>
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$ cdist config -b -A
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</pre></div>
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</div>
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</div>
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<div class="section" id="example-of-manipulating-database">
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<h2>17.6. Example of manipulating database<a class="headerlink" href="#example-of-manipulating-database" title="Permalink to this headline">¶</a></h2>
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<div class="highlight-sh"><div class="highlight"><pre><span></span>$ python3 scripts/cdist inventory list -b
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$ python3 scripts/cdist inventory add-host -b localhost
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$ python3 scripts/cdist inventory add-host -b test.mycloud.net
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$ python3 scripts/cdist inventory list -b
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localhost
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test.mycloud.net
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$ python3 scripts/cdist inventory add-host -b web1.mycloud.net web2.mycloud.net shell1.mycloud.net shell2.mycloud.net
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$ python3 scripts/cdist inventory list -b
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localhost
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test.mycloud.net
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web1.mycloud.net
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web2.mycloud.net
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shell1.mycloud.net
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shell2.mycloud.net
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$ python3 scripts/cdist inventory add-tag -b -t web web1.mycloud.net web2.mycloud.net
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$ python3 scripts/cdist inventory add-tag -b -t shell shell1.mycloud.net shell2.mycloud.net
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$ python3 scripts/cdist inventory add-tag -b -t cloud
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$ python3 scripts/cdist inventory list -b
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localhost cloud
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test.mycloud.net cloud
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web1.mycloud.net cloud,web
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web2.mycloud.net cloud,web
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shell1.mycloud.net cloud,shell
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shell2.mycloud.net cloud,shell
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$ python3 scripts/cdist inventory add-tag -b -t test,web,shell test.mycloud.net
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$ python3 scripts/cdist inventory list -b
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localhost cloud
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test.mycloud.net cloud,shell,test,web
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web1.mycloud.net cloud,web
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web2.mycloud.net cloud,web
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shell1.mycloud.net cloud,shell
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shell2.mycloud.net cloud,shell
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$ python3 scripts/cdist inventory del-tag -b -t shell test.mycloud.net
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$ python3 scripts/cdist inventory list -b
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localhost cloud
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test.mycloud.net cloud,test,web
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web1.mycloud.net cloud,web
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web2.mycloud.net cloud,web
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shell1.mycloud.net cloud,shell
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shell2.mycloud.net cloud,shell
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$ python3 scripts/cdist inventory add-tag -b -t all
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$ python3 scripts/cdist inventory add-tag -b -t mistake
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$ python3 scripts/cdist inventory list -b
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localhost all,cloud,mistake
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test.mycloud.net all,cloud,mistake,test,web
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web1.mycloud.net all,cloud,mistake,web
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web2.mycloud.net all,cloud,mistake,web
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shell1.mycloud.net all,cloud,mistake,shell
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shell2.mycloud.net all,cloud,mistake,shell
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$ python3 scripts/cdist inventory del-tag -b -t mistake
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$ python3 scripts/cdist inventory list -b
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localhost all,cloud
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test.mycloud.net all,cloud,test,web
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web1.mycloud.net all,cloud,web
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web2.mycloud.net all,cloud,web
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shell1.mycloud.net all,cloud,shell
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shell2.mycloud.net all,cloud,shell
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$ python3 scripts/cdist inventory del-host -b localhost
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$ python3 scripts/cdist inventory list -b
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test.mycloud.net all,cloud,test,web
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web1.mycloud.net all,cloud,web
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web2.mycloud.net all,cloud,web
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shell1.mycloud.net all,cloud,shell
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shell2.mycloud.net all,cloud,shell
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$ python3 scripts/cdist inventory list -b -t web
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test.mycloud.net all,cloud,test,web
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web1.mycloud.net all,cloud,web
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web2.mycloud.net all,cloud,web
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$ python3 scripts/cdist inventory list -b -t -a web <span class="nb">test</span>
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test.mycloud.net all,cloud,test,web
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$ python3 scripts/cdist inventory list -b -t -a web all
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test.mycloud.net all,cloud,test,web
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web1.mycloud.net all,cloud,web
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web2.mycloud.net all,cloud,web
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$ python3 scripts/cdist inventory list -b -t web all
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test.mycloud.net all,cloud,test,web
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web1.mycloud.net all,cloud,web
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web2.mycloud.net all,cloud,web
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shell1.mycloud.net all,cloud,shell
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shell2.mycloud.net all,cloud,shell
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$ <span class="nb">cd</span> cdist/inventory
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$ ls -1
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shell1.mycloud.net
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shell2.mycloud.net
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test.mycloud.net
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web1.mycloud.net
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web2.mycloud.net
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$ ls -l
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total <span class="m">20</span>
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-rw-r--r-- <span class="m">1</span> darko darko <span class="m">16</span> Jun <span class="m">24</span> <span class="m">12</span>:43 shell1.mycloud.net
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-rw-r--r-- <span class="m">1</span> darko darko <span class="m">16</span> Jun <span class="m">24</span> <span class="m">12</span>:43 shell2.mycloud.net
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-rw-r--r-- <span class="m">1</span> darko darko <span class="m">19</span> Jun <span class="m">24</span> <span class="m">12</span>:43 test.mycloud.net
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-rw-r--r-- <span class="m">1</span> darko darko <span class="m">14</span> Jun <span class="m">24</span> <span class="m">12</span>:43 web1.mycloud.net
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-rw-r--r-- <span class="m">1</span> darko darko <span class="m">14</span> Jun <span class="m">24</span> <span class="m">12</span>:43 web2.mycloud.net
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$ cat test.mycloud.net
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<span class="nb">test</span>
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all
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web
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cloud
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$ cat web2.mycloud.net
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all
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web
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cloud
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</pre></div>
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</div>
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<p>For more info about inventory commands and options see <a class="reference external" href="man1/cdist.html">cdist</a>(1).</p>
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</div>
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<div class="section" id="using-external-inventory">
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<h2>17.7. Using external inventory<a class="headerlink" href="#using-external-inventory" title="Permalink to this headline">¶</a></h2>
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<p>cdist can be used with any external inventory where external inventory is
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some storage or database from which you can get a list of hosts to configure.
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cdist can then be fed with this list of hosts through stdin or file using
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<strong>-f</strong> option. For example, if your host list is stored in sqlite3 database
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hosts.db and you want to select hosts which purpose is <strong>django</strong> then you
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can use it with cdist like:</p>
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<div class="highlight-sh"><div class="highlight"><pre><span></span>$ sqlite3 hosts.db <span class="s2">"select hostname from hosts where purpose = 'django';"</span> <span class="p">|</span> cdist config
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</pre></div>
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</div>
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