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Ganeti remote API |
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================= |
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|
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Documents Ganeti version |version| |
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|
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.. contents:: |
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|
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Introduction |
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------------ |
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|
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Ganeti supports a remote API for enable external tools to easily |
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retrieve information about a cluster's state. The remote API daemon, |
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*ganeti-rapi*, is automatically started on the master node. By default |
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it runs on TCP port 5080, but this can be changed either in |
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``.../constants.py`` or via the command line parameter *-p*. SSL mode, |
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which is used by default, can also be disabled by passing command line |
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parameters. |
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|
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|
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Users and passwords |
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------------------- |
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|
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``ganeti-rapi`` reads users and passwords from a file (usually |
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``/var/lib/ganeti/rapi_users``) on startup. After modifying the password |
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file, ``ganeti-rapi`` must be restarted. |
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|
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Each line consists of two or three fields separated by whitespace. The |
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first two fields are for username and password. The third field is |
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optional and can be used to specify per-user options. Currently, |
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``write`` is the only option supported and enables the user to execute |
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operations modifying the cluster. Lines starting with the hash sign |
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(``#``) are treated as comments. |
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|
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Passwords can either be written in clear text or as a hash. Clear text |
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passwords may not start with an opening brace (``{``) or they must be |
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prefixed with ``{cleartext}``. To use the hashed form, get the MD5 hash |
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of the string ``$username:Ganeti Remote API:$password`` (e.g. ``echo -n |
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'jack:Ganeti Remote API:abc123' | openssl md5``) [#pwhash]_ and prefix |
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it with ``{ha1}``. Using the scheme prefix for all passwords is |
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recommended. Scheme prefixes are not case sensitive. |
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|
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Example:: |
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|
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# Give Jack and Fred read-only access |
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jack abc123 |
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fred {cleartext}foo555 |
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|
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# Give write access to an imaginary instance creation script |
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autocreator xyz789 write |
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|
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# Hashed password for Jessica |
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jessica {HA1}7046452df2cbb530877058712cf17bd4 write |
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|
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|
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.. [#pwhash] Using the MD5 hash of username, realm and password is |
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described in RFC2617_ ("HTTP Authentication"), sections 3.2.2.2 and |
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3.3. The reason for using it over another algorithm is forward |
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compatibility. If ``ganeti-rapi`` were to implement HTTP Digest |
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authentication in the future, the same hash could be used. |
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In the current version ``ganeti-rapi``'s realm, ``Ganeti Remote |
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API``, can only be changed by modifying the source code. |
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|
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|
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Protocol |
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-------- |
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|
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The protocol used is JSON_ over HTTP designed after the REST_ principle. |
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HTTP Basic authentication as per RFC2617_ is supported. |
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|
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.. _JSON: http://www.json.org/ |
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.. _REST: http://en.wikipedia.org/wiki/Representational_State_Transfer |
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.. _RFC2617: http://tools.ietf.org/rfc/rfc2617.txt |
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|
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|
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PUT or POST? |
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------------ |
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|
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According to RFC2616 the main difference between PUT and POST is that |
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POST can create new resources but PUT can only create the resource the |
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URI was pointing to on the PUT request. |
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|
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Unfortunately, due to historic reasons, the Ganeti RAPI library is not |
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consistent with this usage, so just use the methods as documented below |
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for each resource. |
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|
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For more details have a look in the source code at |
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``lib/rapi/rlib2.py``. |
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|
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|
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Generic parameter types |
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----------------------- |
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|
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A few generic refered parameter types and the values they allow. |
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|
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``bool`` |
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++++++++ |
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|
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A boolean option will accept ``1`` or ``0`` as numbers but not |
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i.e. ``True`` or ``False``. |
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|
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Generic parameters |
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------------------ |
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|
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A few parameter mean the same thing across all resources which implement |
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it. |
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|
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``bulk`` |
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++++++++ |
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|
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Bulk-mode means that for the resources which usually return just a list |
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of child resources (e.g. ``/2/instances`` which returns just instance |
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names), the output will instead contain detailed data for all these |
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subresources. This is more efficient than query-ing the sub-resources |
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themselves. |
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|
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``dry-run`` |
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+++++++++++ |
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|
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The boolean *dry-run* argument, if provided and set, signals to Ganeti |
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that the job should not be executed, only the pre-execution checks will |
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be done. |
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|
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This is useful in trying to determine (without guarantees though, as in |
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the meantime the cluster state could have changed) if the operation is |
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likely to succeed or at least start executing. |
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|
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``force`` |
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+++++++++++ |
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|
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Force operation to continue even if it will cause the cluster to become |
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inconsistent (e.g. because there are not enough master candidates). |
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|
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Usage examples |
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-------------- |
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|
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You can access the API using your favorite programming language as long |
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as it supports network connections. |
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|
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Shell |
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+++++ |
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|
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.. highlight:: sh |
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|
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Using wget:: |
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|
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wget -q -O - https://CLUSTERNAME:5080/2/info |
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|
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or curl:: |
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|
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curl https://CLUSTERNAME:5080/2/info |
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|
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|
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Python |
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++++++ |
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|
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.. highlight:: python |
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|
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:: |
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|
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import urllib2 |
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f = urllib2.urlopen('https://CLUSTERNAME:5080/2/info') |
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print f.read() |
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|
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|
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JavaScript |
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++++++++++ |
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|
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.. warning:: While it's possible to use JavaScript, it poses several |
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potential problems, including browser blocking request due to |
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non-standard ports or different domain names. Fetching the data on |
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the webserver is easier. |
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|
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.. highlight:: javascript |
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|
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:: |
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|
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var url = 'https://CLUSTERNAME:5080/2/info'; |
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var info; |
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var xmlreq = new XMLHttpRequest(); |
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xmlreq.onreadystatechange = function () { |
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if (xmlreq.readyState != 4) return; |
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if (xmlreq.status == 200) { |
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info = eval("(" + xmlreq.responseText + ")"); |
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alert(info); |
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} else { |
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alert('Error fetching cluster info'); |
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} |
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xmlreq = null; |
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}; |
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xmlreq.open('GET', url, true); |
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xmlreq.send(null); |
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|
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Resources |
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--------- |
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|
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.. highlight:: javascript |
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|
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``/`` |
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+++++ |
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|
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The root resource. |
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|
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It supports the following commands: ``GET``. |
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|
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``GET`` |
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~~~~~~~ |
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|
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Shows the list of mapped resources. |
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|
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Returns: a dictionary with 'name' and 'uri' keys for each of them. |
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|
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``/2`` |
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++++++ |
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|
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The ``/2`` resource, the root of the version 2 API. |
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|
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It supports the following commands: ``GET``. |
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|
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``GET`` |
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~~~~~~~ |
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|
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Show the list of mapped resources. |
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|
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Returns: a dictionary with ``name`` and ``uri`` keys for each of them. |
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|
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``/2/info`` |
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+++++++++++ |
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|
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Cluster information resource. |
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|
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It supports the following commands: ``GET``. |
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|
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``GET`` |
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~~~~~~~ |
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|
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Returns cluster information. |
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|
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Example:: |
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|
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{ |
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"config_version": 2000000, |
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"name": "cluster", |
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"software_version": "2.0.0~beta2", |
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"os_api_version": 10, |
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"export_version": 0, |
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"candidate_pool_size": 10, |
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"enabled_hypervisors": [ |
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"fake" |
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], |
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"hvparams": { |
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"fake": {} |
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}, |
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"default_hypervisor": "fake", |
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"master": "node1.example.com", |
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"architecture": [ |
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"64bit", |
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"x86_64" |
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], |
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"protocol_version": 20, |
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"beparams": { |
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"default": { |
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"auto_balance": true, |
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"vcpus": 1, |
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"memory": 128 |
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} |
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} |
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} |
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|
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|
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``/2/redistribute-config`` |
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++++++++++++++++++++++++++ |
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|
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Redistribute configuration to all nodes. |
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|
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It supports the following commands: ``PUT``. |
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|
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``PUT`` |
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~~~~~~~ |
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|
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Redistribute configuration to all nodes. The result will be a job id. |
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|
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|
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``/2/instances`` |
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++++++++++++++++ |
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|
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The instances resource. |
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|
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It supports the following commands: ``GET``, ``POST``. |
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|
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``GET`` |
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~~~~~~~ |
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|
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Returns a list of all available instances. |
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|
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Example:: |
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|
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[ |
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{ |
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"name": "web.example.com", |
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"uri": "\/instances\/web.example.com" |
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}, |
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{ |
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"name": "mail.example.com", |
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"uri": "\/instances\/mail.example.com" |
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} |
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] |
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|
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If the optional bool *bulk* argument is provided and set to a true value |
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(i.e ``?bulk=1``), the output contains detailed information about |
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instances as a list. |
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|
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Example:: |
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|
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[ |
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{ |
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"status": "running", |
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"disk_usage": 20480, |
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"nic.bridges": [ |
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"xen-br0" |
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], |
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"name": "web.example.com", |
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"tags": ["tag1", "tag2"], |
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"beparams": { |
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"vcpus": 2, |
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"memory": 512 |
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}, |
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"disk.sizes": [ |
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20480 |
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], |
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"pnode": "node1.example.com", |
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"nic.macs": ["01:23:45:67:89:01"], |
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"snodes": ["node2.example.com"], |
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"disk_template": "drbd", |
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"admin_state": true, |
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"os": "debian-etch", |
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"oper_state": true |
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}, |
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... |
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] |
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|
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|
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``POST`` |
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~~~~~~~~ |
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|
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Creates an instance. |
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|
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If the optional bool *dry-run* argument is provided, the job will not be |
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actually executed, only the pre-execution checks will be done. Query-ing |
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the job result will return, in both dry-run and normal case, the list of |
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nodes selected for the instance. |
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|
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Returns: a job ID that can be used later for polling. |
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|
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``/2/instances/[instance_name]`` |
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++++++++++++++++++++++++++++++++ |
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|
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Instance-specific resource. |
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|
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It supports the following commands: ``GET``, ``DELETE``. |
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|
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``GET`` |
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~~~~~~~ |
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|
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Returns information about an instance, similar to the bulk output from |
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the instance list. |
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|
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``DELETE`` |
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~~~~~~~~~~ |
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|
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Deletes an instance. |
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|
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It supports the ``dry-run`` argument. |
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|
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|
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``/2/instances/[instance_name]/info`` |
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+++++++++++++++++++++++++++++++++++++++ |
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|
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It supports the following commands: ``GET``. |
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|
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``GET`` |
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~~~~~~~ |
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|
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Requests detailed information about the instance. An optional parameter, |
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``static`` (bool), can be set to return only static information from the |
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configuration without querying the instance's nodes. The result will be |
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a job id. |
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|
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|
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``/2/instances/[instance_name]/reboot`` |
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+++++++++++++++++++++++++++++++++++++++ |
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|
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Reboots URI for an instance. |
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|
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It supports the following commands: ``POST``. |
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|
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``POST`` |
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~~~~~~~~ |
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|
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Reboots the instance. |
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|
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The URI takes optional ``type=soft|hard|full`` and |
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``ignore_secondaries=0|1`` parameters. |
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|
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``type`` defines the reboot type. ``soft`` is just a normal reboot, |
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without terminating the hypervisor. ``hard`` means full shutdown |
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(including terminating the hypervisor process) and startup again. |
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``full`` is like ``hard`` but also recreates the configuration from |
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ground up as if you would have done a ``gnt-instance shutdown`` and |
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``gnt-instance start`` on it. |
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|
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``ignore_secondaries`` is a bool argument indicating if we start the |
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instance even if secondary disks are failing. |
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|
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It supports the ``dry-run`` argument. |
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|
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|
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``/2/instances/[instance_name]/shutdown`` |
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+++++++++++++++++++++++++++++++++++++++++ |
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|
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Instance shutdown URI. |
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|
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It supports the following commands: ``PUT``. |
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|
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``PUT`` |
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~~~~~~~ |
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|
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Shutdowns an instance. |
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|
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It supports the ``dry-run`` argument. |
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|
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|
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``/2/instances/[instance_name]/startup`` |
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++++++++++++++++++++++++++++++++++++++++ |
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|
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Instance startup URI. |
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|
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It supports the following commands: ``PUT``. |
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|
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``PUT`` |
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~~~~~~~ |
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|
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Startup an instance. |
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|
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The URI takes an optional ``force=1|0`` parameter to start the |
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instance even if secondary disks are failing. |
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|
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It supports the ``dry-run`` argument. |
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|
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``/2/instances/[instance_name]/reinstall`` |
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++++++++++++++++++++++++++++++++++++++++++++++ |
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|
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Installs the operating system again. |
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|
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It supports the following commands: ``POST``. |
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|
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``POST`` |
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~~~~~~~~ |
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|
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Takes the parameters ``os`` (OS template name) and ``nostartup`` (bool). |
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|
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|
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``/2/instances/[instance_name]/replace-disks`` |
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++++++++++++++++++++++++++++++++++++++++++++++ |
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|
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Replaces disks on an instance. |
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|
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It supports the following commands: ``POST``. |
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|
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``POST`` |
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~~~~~~~~ |
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|
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Takes the parameters ``mode`` (one of ``replace_on_primary``, |
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``replace_on_secondary``, ``replace_new_secondary`` or |
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``replace_auto``), ``disks`` (comma separated list of disk indexes), |
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``remote_node`` and ``iallocator``. |
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|
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Either ``remote_node`` or ``iallocator`` needs to be defined when using |
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``mode=replace_new_secondary``. |
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|
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``mode`` is a mandatory parameter. ``replace_auto`` tries to determine |
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the broken disk(s) on its own and replacing it. |
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|
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|
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``/2/instances/[instance_name]/activate-disks`` |
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+++++++++++++++++++++++++++++++++++++++++++++++ |
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|
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Activate disks on an instance. |
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|
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It supports the following commands: ``PUT``. |
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|
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``PUT`` |
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~~~~~~~ |
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|
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Takes the bool parameter ``ignore_size``. When set ignore the recorded |
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size (useful for forcing activation when recorded size is wrong). |
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|
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|
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``/2/instances/[instance_name]/deactivate-disks`` |
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+++++++++++++++++++++++++++++++++++++++++++++++++ |
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|
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Deactivate disks on an instance. |
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|
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It supports the following commands: ``PUT``. |
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|
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``PUT`` |
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~~~~~~~ |
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|
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Takes no parameters. |
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|
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|
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``/2/instances/[instance_name]/tags`` |
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+++++++++++++++++++++++++++++++++++++ |
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|
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Manages per-instance tags. |
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|
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It supports the following commands: ``GET``, ``PUT``, ``DELETE``. |
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|
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``GET`` |
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~~~~~~~ |
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|
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Returns a list of tags. |
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|
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Example:: |
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|
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["tag1", "tag2", "tag3"] |
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|
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``PUT`` |
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~~~~~~~ |
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|
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Add a set of tags. |
531 |
|
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The request as a list of strings should be ``PUT`` to this URI. The |
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result will be a job id. |
534 |
|
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It supports the ``dry-run`` argument. |
536 |
|
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|
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``DELETE`` |
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~~~~~~~~~~ |
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|
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Delete a tag. |
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|
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In order to delete a set of tags, the DELETE request should be addressed |
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to URI like:: |
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|
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/tags?tag=[tag]&tag=[tag] |
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|
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It supports the ``dry-run`` argument. |
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|
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|
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``/2/jobs`` |
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+++++++++++ |
553 |
|
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The ``/2/jobs`` resource. |
555 |
|
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It supports the following commands: ``GET``. |
557 |
|
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``GET`` |
559 |
~~~~~~~ |
560 |
|
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Returns a dictionary of jobs. |
562 |
|
563 |
Returns: a dictionary with jobs id and uri. |
564 |
|
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``/2/jobs/[job_id]`` |
566 |
++++++++++++++++++++ |
567 |
|
568 |
|
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Individual job URI. |
570 |
|
571 |
It supports the following commands: ``GET``, ``DELETE``. |
572 |
|
573 |
``GET`` |
574 |
~~~~~~~ |
575 |
|
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Returns a job status. |
577 |
|
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Returns: a dictionary with job parameters. |
579 |
|
580 |
The result includes: |
581 |
|
582 |
- id: job ID as a number |
583 |
- status: current job status as a string |
584 |
- ops: involved OpCodes as a list of dictionaries for each opcodes in |
585 |
the job |
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- opstatus: OpCodes status as a list |
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- opresult: OpCodes results as a list |
588 |
|
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For a successful opcode, the ``opresult`` field corresponding to it will |
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contain the raw result from its :term:`LogicalUnit`. In case an opcode |
591 |
has failed, its element in the opresult list will be a list of two |
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elements: |
593 |
|
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- first element the error type (the Ganeti internal error name) |
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- second element a list of either one or two elements: |
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|
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- the first element is the textual error description |
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- the second element, if any, will hold an error classification |
599 |
|
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The error classification is most useful for the ``OpPrereqError`` |
601 |
error type - these errors happen before the OpCode has started |
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executing, so it's possible to retry the OpCode without side |
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effects. But whether it make sense to retry depends on the error |
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classification: |
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|
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``resolver_error`` |
607 |
Resolver errors. This usually means that a name doesn't exist in DNS, |
608 |
so if it's a case of slow DNS propagation the operation can be retried |
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later. |
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|
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``insufficient_resources`` |
612 |
Not enough resources (iallocator failure, disk space, memory, |
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etc.). If the resources on the cluster increase, the operation might |
614 |
succeed. |
615 |
|
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``wrong_input`` |
617 |
Wrong arguments (at syntax level). The operation will not ever be |
618 |
accepted unless the arguments change. |
619 |
|
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``wrong_state`` |
621 |
Wrong entity state. For example, live migration has been requested for |
622 |
a down instance, or instance creation on an offline node. The |
623 |
operation can be retried once the resource has changed state. |
624 |
|
625 |
``unknown_entity`` |
626 |
Entity not found. For example, information has been requested for an |
627 |
unknown instance. |
628 |
|
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``already_exists`` |
630 |
Entity already exists. For example, instance creation has been |
631 |
requested for an already-existing instance. |
632 |
|
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``resource_not_unique`` |
634 |
Resource not unique (e.g. MAC or IP duplication). |
635 |
|
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``internal_error`` |
637 |
Internal cluster error. For example, a node is unreachable but not set |
638 |
offline, or the ganeti node daemons are not working, etc. A |
639 |
``gnt-cluster verify`` should be run. |
640 |
|
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``environment_error`` |
642 |
Environment error (e.g. node disk error). A ``gnt-cluster verify`` |
643 |
should be run. |
644 |
|
645 |
Note that in the above list, by entity we refer to a node or instance, |
646 |
while by a resource we refer to an instance's disk, or NIC, etc. |
647 |
|
648 |
|
649 |
``DELETE`` |
650 |
~~~~~~~~~~ |
651 |
|
652 |
Cancel a not-yet-started job. |
653 |
|
654 |
|
655 |
``/2/jobs/[job_id]/wait`` |
656 |
+++++++++++++++++++++++++ |
657 |
|
658 |
``GET`` |
659 |
~~~~~~~ |
660 |
|
661 |
Waits for changes on a job. Takes the following body parameters in a |
662 |
dict: |
663 |
|
664 |
``fields`` |
665 |
The job fields on which to watch for changes. |
666 |
|
667 |
``previous_job_info`` |
668 |
Previously received field values or None if not yet available. |
669 |
|
670 |
``previous_log_serial`` |
671 |
Highest log serial number received so far or None if not yet |
672 |
available. |
673 |
|
674 |
Returns None if no changes have been detected and a dict with two keys, |
675 |
``job_info`` and ``log_entries`` otherwise. |
676 |
|
677 |
|
678 |
``/2/nodes`` |
679 |
++++++++++++ |
680 |
|
681 |
Nodes resource. |
682 |
|
683 |
It supports the following commands: ``GET``. |
684 |
|
685 |
``GET`` |
686 |
~~~~~~~ |
687 |
|
688 |
Returns a list of all nodes. |
689 |
|
690 |
Example:: |
691 |
|
692 |
[ |
693 |
{ |
694 |
"id": "node1.example.com", |
695 |
"uri": "\/nodes\/node1.example.com" |
696 |
}, |
697 |
{ |
698 |
"id": "node2.example.com", |
699 |
"uri": "\/nodes\/node2.example.com" |
700 |
} |
701 |
] |
702 |
|
703 |
If the optional 'bulk' argument is provided and set to 'true' value (i.e |
704 |
'?bulk=1'), the output contains detailed information about nodes as a |
705 |
list. |
706 |
|
707 |
Example:: |
708 |
|
709 |
[ |
710 |
{ |
711 |
"pinst_cnt": 1, |
712 |
"mfree": 31280, |
713 |
"mtotal": 32763, |
714 |
"name": "www.example.com", |
715 |
"tags": [], |
716 |
"mnode": 512, |
717 |
"dtotal": 5246208, |
718 |
"sinst_cnt": 2, |
719 |
"dfree": 5171712, |
720 |
"offline": false |
721 |
}, |
722 |
... |
723 |
] |
724 |
|
725 |
``/2/nodes/[node_name]`` |
726 |
+++++++++++++++++++++++++++++++++ |
727 |
|
728 |
Returns information about a node. |
729 |
|
730 |
It supports the following commands: ``GET``. |
731 |
|
732 |
``/2/nodes/[node_name]/evacuate`` |
733 |
+++++++++++++++++++++++++++++++++ |
734 |
|
735 |
Evacuates all secondary instances off a node. |
736 |
|
737 |
It supports the following commands: ``POST``. |
738 |
|
739 |
``POST`` |
740 |
~~~~~~~~ |
741 |
|
742 |
To evacuate a node, either one of the ``iallocator`` or ``remote_node`` |
743 |
parameters must be passed:: |
744 |
|
745 |
evacuate?iallocator=[iallocator] |
746 |
evacuate?remote_node=[nodeX.example.com] |
747 |
|
748 |
``/2/nodes/[node_name]/migrate`` |
749 |
+++++++++++++++++++++++++++++++++ |
750 |
|
751 |
Migrates all primary instances from a node. |
752 |
|
753 |
It supports the following commands: ``POST``. |
754 |
|
755 |
``POST`` |
756 |
~~~~~~~~ |
757 |
|
758 |
No parameters are required, but the bool parameter ``live`` can be set |
759 |
to use live migration (if available). |
760 |
|
761 |
migrate?live=[0|1] |
762 |
|
763 |
``/2/nodes/[node_name]/role`` |
764 |
+++++++++++++++++++++++++++++ |
765 |
|
766 |
Manages node role. |
767 |
|
768 |
It supports the following commands: ``GET``, ``PUT``. |
769 |
|
770 |
The role is always one of the following: |
771 |
|
772 |
- drained |
773 |
- master |
774 |
- master-candidate |
775 |
- offline |
776 |
- regular |
777 |
|
778 |
``GET`` |
779 |
~~~~~~~ |
780 |
|
781 |
Returns the current node role. |
782 |
|
783 |
Example:: |
784 |
|
785 |
"master-candidate" |
786 |
|
787 |
``PUT`` |
788 |
~~~~~~~ |
789 |
|
790 |
Change the node role. |
791 |
|
792 |
The request is a string which should be PUT to this URI. The result will |
793 |
be a job id. |
794 |
|
795 |
It supports the bool ``force`` argument. |
796 |
|
797 |
``/2/nodes/[node_name]/storage`` |
798 |
++++++++++++++++++++++++++++++++ |
799 |
|
800 |
Manages storage units on the node. |
801 |
|
802 |
``GET`` |
803 |
~~~~~~~ |
804 |
|
805 |
Requests a list of storage units on a node. Requires the parameters |
806 |
``storage_type`` (one of ``file``, ``lvm-pv`` or ``lvm-vg``) and |
807 |
``output_fields``. The result will be a job id, using which the result |
808 |
can be retrieved. |
809 |
|
810 |
``/2/nodes/[node_name]/storage/modify`` |
811 |
+++++++++++++++++++++++++++++++++++++++ |
812 |
|
813 |
Modifies storage units on the node. |
814 |
|
815 |
``PUT`` |
816 |
~~~~~~~ |
817 |
|
818 |
Modifies parameters of storage units on the node. Requires the |
819 |
parameters ``storage_type`` (one of ``file``, ``lvm-pv`` or ``lvm-vg``) |
820 |
and ``name`` (name of the storage unit). Parameters can be passed |
821 |
additionally. Currently only ``allocatable`` (bool) is supported. The |
822 |
result will be a job id. |
823 |
|
824 |
``/2/nodes/[node_name]/storage/repair`` |
825 |
+++++++++++++++++++++++++++++++++++++++ |
826 |
|
827 |
Repairs a storage unit on the node. |
828 |
|
829 |
``PUT`` |
830 |
~~~~~~~ |
831 |
|
832 |
Repairs a storage unit on the node. Requires the parameters |
833 |
``storage_type`` (currently only ``lvm-vg`` can be repaired) and |
834 |
``name`` (name of the storage unit). The result will be a job id. |
835 |
|
836 |
``/2/nodes/[node_name]/tags`` |
837 |
+++++++++++++++++++++++++++++ |
838 |
|
839 |
Manages per-node tags. |
840 |
|
841 |
It supports the following commands: ``GET``, ``PUT``, ``DELETE``. |
842 |
|
843 |
``GET`` |
844 |
~~~~~~~ |
845 |
|
846 |
Returns a list of tags. |
847 |
|
848 |
Example:: |
849 |
|
850 |
["tag1", "tag2", "tag3"] |
851 |
|
852 |
``PUT`` |
853 |
~~~~~~~ |
854 |
|
855 |
Add a set of tags. |
856 |
|
857 |
The request as a list of strings should be PUT to this URI. The result |
858 |
will be a job id. |
859 |
|
860 |
It supports the ``dry-run`` argument. |
861 |
|
862 |
``DELETE`` |
863 |
~~~~~~~~~~ |
864 |
|
865 |
Deletes tags. |
866 |
|
867 |
In order to delete a set of tags, the DELETE request should be addressed |
868 |
to URI like:: |
869 |
|
870 |
/tags?tag=[tag]&tag=[tag] |
871 |
|
872 |
It supports the ``dry-run`` argument. |
873 |
|
874 |
|
875 |
``/2/os`` |
876 |
+++++++++ |
877 |
|
878 |
OS resource. |
879 |
|
880 |
It supports the following commands: ``GET``. |
881 |
|
882 |
``GET`` |
883 |
~~~~~~~ |
884 |
|
885 |
Return a list of all OSes. |
886 |
|
887 |
Can return error 500 in case of a problem. Since this is a costly |
888 |
operation for Ganeti 2.0, it is not recommended to execute it too often. |
889 |
|
890 |
Example:: |
891 |
|
892 |
["debian-etch"] |
893 |
|
894 |
``/2/tags`` |
895 |
+++++++++++ |
896 |
|
897 |
Manages cluster tags. |
898 |
|
899 |
It supports the following commands: ``GET``, ``PUT``, ``DELETE``. |
900 |
|
901 |
``GET`` |
902 |
~~~~~~~ |
903 |
|
904 |
Returns the cluster tags. |
905 |
|
906 |
Example:: |
907 |
|
908 |
["tag1", "tag2", "tag3"] |
909 |
|
910 |
``PUT`` |
911 |
~~~~~~~ |
912 |
|
913 |
Adds a set of tags. |
914 |
|
915 |
The request as a list of strings should be PUT to this URI. The result |
916 |
will be a job id. |
917 |
|
918 |
It supports the ``dry-run`` argument. |
919 |
|
920 |
|
921 |
``DELETE`` |
922 |
~~~~~~~~~~ |
923 |
|
924 |
Deletes tags. |
925 |
|
926 |
In order to delete a set of tags, the DELETE request should be addressed |
927 |
to URI like:: |
928 |
|
929 |
/tags?tag=[tag]&tag=[tag] |
930 |
|
931 |
It supports the ``dry-run`` argument. |
932 |
|
933 |
|
934 |
``/version`` |
935 |
++++++++++++ |
936 |
|
937 |
The version resource. |
938 |
|
939 |
This resource should be used to determine the remote API version and to |
940 |
adapt clients accordingly. |
941 |
|
942 |
It supports the following commands: ``GET``. |
943 |
|
944 |
``GET`` |
945 |
~~~~~~~ |
946 |
|
947 |
Returns the remote API version. Ganeti 1.2 returned ``1`` and Ganeti 2.0 |
948 |
returns ``2``. |
949 |
|
950 |
.. vim: set textwidth=72 : |
951 |
.. Local Variables: |
952 |
.. mode: rst |
953 |
.. fill-column: 72 |
954 |
.. End: |