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< li class = "toctree-l1 current" > < a class = "current reference internal" href = "#" > 23. Remote exec and copy commands< / a > < / li >
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< h1 > 23. Remote exec and copy commands< a class = "headerlink" href = "#remote-exec-and-copy-commands" title = "Permalink to this headline" > ¶< / a > < / h1 >
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< p > Cdist interacts with the target host in two ways:< / p >
< ul class = "simple" >
< li > it executes code (__remote_exec)< / li >
< li > and it copies files (__remote_copy)< / li >
< / ul >
< p > By default this is accomplished with ssh and scp respectively.
The default implementations used by cdist are:< / p >
< div class = "highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > __remote_exec< / span > < span class = "p" > :< / span > < span class = "n" > ssh< / span > < span class = "o" > -< / span > < span class = "n" > o< / span > < span class = "n" > User< / span > < span class = "o" > =< / span > < span class = "n" > root< / span >
< span class = "n" > __remote_copy< / span > < span class = "p" > :< / span > < span class = "n" > scp< / span > < span class = "o" > -< / span > < span class = "n" > o< / span > < span class = "n" > User< / span > < span class = "o" > =< / span > < span class = "n" > root< / span >
< / pre > < / div >
< / div >
< p > The user can override these defaults by providing custom implementations and
passing them to cdist with the --remote-exec and/or --remote-copy arguments.< / p >
< p > For __remote_exec, the custom implementation must behave as if it where ssh.
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For __remote_copy, it must behave like scp.
Please notice, custom implementations should work like ssh/scp so __remote_copy
must support IPv6 addresses enclosed in square brackets. For __remote_exec you
must take into account that for some options (like -L) IPv6 addresses can be
specified by enclosed in square brackets (see < strong > ssh< / strong > (1) and
< strong > scp< / strong > (1)).< / p >
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< p > With this simple interface the user can take total control of how cdist
interacts with the target when required, while the default implementation
remains as simple as possible.< / p >
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