doc: update distro information and cloud-init users

- centralize the information about the default cloud-init users
  for various distributions to point to the existing specialized
  page;
- remove all CentOS 6 and Ubuntu 12.04 (Precise) references, and
  do not refer to Ubuntu 14.04 for the vanilla plugin;
- add Ubuntu 16.04 (Xenial) details when needed;
- update the pointers to few packages.

Change-Id: I4654e6ec2821bcec5207f41b93c5d0f0633ba18c
This commit is contained in:
Luigi Toscano 2018-09-13 23:05:20 +02:00
parent 9b7bf6c3fc
commit 33ebe622c3
1 changed files with 2 additions and 3 deletions

View File

@ -22,9 +22,8 @@ CDH 5.4.0 HDFS and Apache Spark installed.
The Spark plugin requires an image to be tagged in the sahara image registry
with two tags: 'spark' and '<Spark version>' (e.g. '1.6.0').
Also you should specify the username of the default cloud-user used in the
image. For the images available at the URLs listed above and for all the ones
generated with the DIB it is `ubuntu`.
The image requires a username. For more information, refer to the
:doc:`registering-image` section.
Note that the Spark cluster is deployed using the scripts available in the
Spark distribution, which allow the user to start all services (master and