This is general clean up in prep for use with the stress test.
Changes:
1) Failed commands and failure to connect now raise exceptions.
Previously run_cmd() was not guaranteed to do anything at all in
remote mode.
2) Fix scope of 'hosts' which was at the class level but was modified
by instance level functions which makes no sense since different
instances could clash with each other.
3) Remove uses of opaque *args and **kwargs instead of named args. The
generic forms should be avoided since they impair readability.
4) Stop trying to get the cluster hosts from an environment variable
unconditionally upon construction.
5) Remove 'local' member variable, it's not needed and allowing 'local'
to be set to False when no 'hosts' are not set makes no sense.
6) Simplify and remove unneeded methods and arguments.
Change-Id: Id90bd3b640f2681bb7e82a5e6d5e49ed8c5a7b98
Reviewed-on: http://gerrit.cloudera.org:8080/514
Reviewed-by: Casey Ching <casey@cloudera.com>
Tested-by: Internal Jenkins
This change encloses fabric's task method with its 'hide' context manager. The current
state of the running commands are muted (i.e, hosts connected to, which command is running
etc.). Error messages are NOT muted, and will still be displayed (connection error,
command failure).
Change-Id: Ibfbbb995ab6fe057faec9af8be90449654b21f8c
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1155
Reviewed-by: Ishaan Joshi <ishaan@cloudera.com>
Tested-by: jenkins
The plugin runner uses fabric as the underlying mechanism for running remote commands on
cluster hosts. fabric in turn uses paramiko, which generates a lot of log spew. This
change seta parmiko's logging level to ERROR, eliminating excess logging. Additionally,
it also constrains fabric's logging.
Change-Id: I6229d64f95f9c1512cc01842c4a661e96e421086
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1064
Reviewed-by: Ishaan Joshi <ishaan@cloudera.com>
Tested-by: jenkins
