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< div class = "section" id = "the-inventory-file-patterns-and-groups" >
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< span id = "patterns" > < / span > < h1 > The Inventory File, Patterns, and Groups< a class = "headerlink" href = "#the-inventory-file-patterns-and-groups" title = "Permalink to this headline" > ¶< / a > < / h1 >
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< p > How to select hosts you wish to manage< / p >
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< p class = "first admonition-title" > See also< / p >
< dl class = "last docutils" >
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< dt > < a class = "reference internal" href = "examples.html" > < em > Command Line Examples< / em > < / a > < / dt >
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< dd > Examples of basic commands< / dd >
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< dt > < a class = "reference internal" href = "playbooks.html" > < em > Playbooks< / em > < / a > < / dt >
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< dd > Learning ansible’ s configuration management language< / dd >
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< div class = "section" id = "inventory-file-format" >
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< span id = "inventoryformat" > < / span > < h2 > Inventory File Format< a class = "headerlink" href = "#inventory-file-format" title = "Permalink to this headline" > ¶< / a > < / h2 >
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< p > Ansible works against multiple systems in your infrastructure at the
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same time. It does this by selecting portions of systems listed in
Ansible’ s inventory file, which defaults to /etc/ansible/hosts, and
looks like this:< / p >
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< div class = "highlight-python" > < div class = "highlight" > < pre > < span class = "n" > mail< / span > < span class = "o" > .< / span > < span class = "n" > example< / span > < span class = "o" > .< / span > < span class = "n" > com< / span >
< span class = "p" > [< / span > < span class = "n" > webservers< / span > < span class = "p" > ]< / span >
< span class = "n" > foo< / span > < span class = "o" > .< / span > < span class = "n" > example< / span > < span class = "o" > .< / span > < span class = "n" > com< / span >
< span class = "n" > bar< / span > < span class = "o" > .< / span > < span class = "n" > example< / span > < span class = "o" > .< / span > < span class = "n" > com< / span >
< span class = "p" > [< / span > < span class = "n" > dbservers< / span > < span class = "p" > ]< / span >
< span class = "n" > one< / span > < span class = "o" > .< / span > < span class = "n" > example< / span > < span class = "o" > .< / span > < span class = "n" > com< / span >
< span class = "n" > two< / span > < span class = "o" > .< / span > < span class = "n" > example< / span > < span class = "o" > .< / span > < span class = "n" > com< / span >
< span class = "n" > three< / span > < span class = "o" > .< / span > < span class = "n" > example< / span > < span class = "o" > .< / span > < span class = "n" > com< / span >
< / pre > < / div >
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< / div >
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< div class = "section" id = "selecting-targets" >
< h2 > Selecting Targets< a class = "headerlink" href = "#selecting-targets" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > These patterns target all hosts in the inventory file:< / p >
< div class = "highlight-python" > < pre > all
*< / pre >
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< / div >
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< p > It is also possible to address specific hosts:< / p >
< div class = "highlight-python" > < pre > one.example.com
one.example.com:two.example.com< / pre >
< / div >
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< p > The following patterns address one or more groups, which are denoted
with the bracket headers in the inventory file:< / p >
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< div class = "highlight-python" > < pre > webservers
webservers:dbservers< / pre >
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< / div >
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< p > Individual hosts, but not groups, can also be referenced using
wildcards:< / p >
< div class = "highlight-python" > < pre > *.example.com
*.com< / pre >
< / div >
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< p > It’ s also ok to mix wildcard patterns and groups at the same time:< / p >
< div class = "highlight-python" > < pre > one*.com:dbservers< / pre >
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< / div >
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< div class = "admonition note" >
< p class = "first admonition-title" > Note< / p >
< p class = "last" > It is not possible to target a host not in the inventory file.< / p >
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© Copyright 2012 Michael DeHaan.< br / >
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Last updated on Mar 10, 2012.< br / >
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Created using < a href = "http://sphinx.pocoo.org/" > Sphinx< / a > 1.0.8.< br / >
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