yahoo-eng-team team mailing list archive

[Daniel Watkins <daniel.watkins@xxxxxxxxxxxxx>]

** Description changed:

+ === Begin SRU Information ===
+ [Impact]
+ CloudStack provides an EC2-style metadata server which cloud-init consumes.  Unfortunately, the CloudStack metadata server does not exactly match the behaviour of the EC2 metadata server.  When an instance using cloud-init is booted in a CloudStack environment, it will fail to retrieve metadata from the metadata server.  This leads to cloud-init bailing out and making no changes to the instance, generally rendering it inaccessible and unusable.
+ 
+ This patch changes all access to EC2-style metadata servers.  Instead of
+ accessing http://.../meta-data to determine the available metadata,
+ cloud-init will access http://.../meta-data/ (i.e. with an added
+ trailing slash).
+ 
+ [Test Case]
+ Booting an Ubuntu image configured to use the CloudStack data source within a CloudStack cloud environment.  If (for example) the instance name is set correctly, then the fix has worked.
+ 
+ [Regression Potential]
+ 
+ Regression potential is low; this patch does affect more than just the
+ CloudStack data source, but it is backported from the version of cloud-
+ init in utopic which has been observed working.
+ 
+ === End SRU Information ===
+ 
  Hi,
  
  Cloud-init 0.7.5 fails to get cloudstack user-data because of trailing
  slash (ok in previous versions).
  
  As a temp workaround I use the following patch in url_helper.py line 239
  (0.7.5-0ubuntu1):
  
-            if e.response.status_code == 404:
-                 if url.endswith("/"):
-                     url = url[:-1]
-                     req_args["url"] = url
-                 else:
-                     url = url + "/"
-                     req_args["url"] = url
+            if e.response.status_code == 404:
+                 if url.endswith("/"):
+                     url = url[:-1]
+                     req_args["url"] = url
+                 else:
+                     url = url + "/"
+                     req_args["url"] = url
  
- 
- I don't know how other products (EC2, openstack & co) deal with trailing slash
+ I don't know how other products (EC2, openstack & co) deal with trailing
+ slash
  
  Hope that helps
  
  Thanks

** Also affects: cloud-init (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1356855

Title:
  Cloud-init 0.7.5 Failed to get cloudstack user-data because of
  trailing slash

Status in Init scripts for use on cloud images:
  Fix Committed
Status in cloud-init package in Ubuntu:
  New

Bug description:
  === Begin SRU Information ===
  [Impact]
  CloudStack provides an EC2-style metadata server which cloud-init consumes.  Unfortunately, the CloudStack metadata server does not exactly match the behaviour of the EC2 metadata server.  When an instance using cloud-init is booted in a CloudStack environment, it will fail to retrieve metadata from the metadata server.  This leads to cloud-init bailing out and making no changes to the instance, generally rendering it inaccessible and unusable.

  This patch changes all access to EC2-style metadata servers.  Instead
  of accessing http://.../meta-data to determine the available metadata,
  cloud-init will access http://.../meta-data/ (i.e. with an added
  trailing slash).

  [Test Case]
  Booting an Ubuntu image configured to use the CloudStack data source within a CloudStack cloud environment.  If (for example) the instance name is set correctly, then the fix has worked.

  [Regression Potential]

  Regression potential is low; this patch does affect more than just the
  CloudStack data source, but it is backported from the version of
  cloud-init in utopic which has been observed working.

  === End SRU Information ===

  Hi,

  Cloud-init 0.7.5 fails to get cloudstack user-data because of trailing
  slash (ok in previous versions).

  As a temp workaround I use the following patch in url_helper.py line
  239 (0.7.5-0ubuntu1):

             if e.response.status_code == 404:
                  if url.endswith("/"):
                      url = url[:-1]
                      req_args["url"] = url
                  else:
                      url = url + "/"
                      req_args["url"] = url

  I don't know how other products (EC2, openstack & co) deal with
  trailing slash

  Hope that helps

  Thanks

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