This patch completely  gets rid of fping
 - replace all fping invocations with TcpPing calls
 - update documentation accordingly.
 - associated cleanups (use constant for localhost IP, use more sensible
   defaults for TcpPing and _use_ those)

Reviewed-by: iustinp

- Implement colours in qa_utils.
- Print warning for cron script.

Reviewed-by: iustinp

This adds:
  - fix the case when a dumb caller didn't stringify its values
  - explicitly raise a ProgrammerError in case a field is missing from
    the headers dictionary

Reviewed-by: imsnah

Currently, AskUser dies with -ESPIPE if the user gives more than one
character plus newline. This is because the python library, while
returning only two chars from the readline(2) call, will cache the rest
of the input, and when we do a write, it will try to seek back to just
after the last returned char. This fails on /dev/tty, so an exception is
raised. However, then opening the file descriptor in O_APPEND mode,
python will not issue such seeks, thereby fixing this problem.

The other alternative, opening in unbuffered mode, is not as good, since
then python will issue one-byte reads at a time, but the tty will read
the entire line, so at the next readline call, whatever remained in the
descriptor buffer is returned from the kernel to python, and the user
doesn't get a chance to enter something at all.

Reviewed-by: imsnah

Reviewed-by: iustinp

This patch adds a new 'evacuate' subcommand to gnt-node. The command
will do a replace disks for all instances having that node as secondary
with the new target being the new node given.

The syntax is:
  gnt-node evacuate src_node target_node

The command by itself doesn't do any resource checks, and instead relies
on the LUFailoverInstance code to do that.

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: iustinp

Since modules are not directly executables, remove the shebang from
them. This helps with lintian warnings.

Also make the autogenerated _autoconf.py contain two comment lines at
the beginning, like the other modules.

Reviewed-by: ultrotter

- Change format of watcher state file to JSON.
- Move log path for watcher script to constants.py.

Reviewed-by: iustinp

This patch implements a simple failover command for failing over all
primary instances. This is just a batched form of gnt-instance failover.

Reviewed-by: imsnah

Reviewed-by: ultrotter

The new version debugs Hidden OSes as well.


Reviewed-by: iustinp

This was introduced in rev 208.

Reviewed-by: imsnah

This patch moves the error formatting into a separate function that will
be exported so that scripts that execute multiple opcodes can create the
same output as for GenericMain. Also, GenericMain becomes more readable.

Reviewed-by: imsnah

As far as I understand, this was just a debugging aid. Remove it so that
configuration errors are nicely handled.

Reviewed-by: imsnah

This patch allows the SubmitOpcode function to take a pre-created
Processor instance and a different feedback function. This is helpful
when submitting more than one opcode from a shell script.

Reviewed-by: imsnah

Reviewed-by: iustinp

This patch adds a simple handler for TagError that prints the error
(better than having a stack dump).

Reviewed-by: imsnah

This patch adds a '--from' option to the {add,remove}-tags commands that
allows the command to read from a file or from stdin (when passing a
dash for the filename).

Reviewed-by: imsnah

This adds documentation on the {list,add,remove}-tags commands to the
gnt-{cluster,node,instance} man pages.

Reviewed-by: imsnah

This brings this man page in conformity to gnt-node and (partially) to
gnt-instance.

Reviewed-by: imsnah

This patch adds generic functions for tag manipulations to cli.py and
modifies gnt-{cluster,node,instance} to export {list,add,remove}-tags
commands that use those.

Reviewed-by: imsnah

This patch changes the tags opcodes to work with multiple tags at once
instead of only one. As such, the opcodes and some parameters are
renamed.

Reviewed-by: imsnah

Reviewed-by: imsnah

Reviewed-by: imsnah

This allows scripts to pass options to generic functions (options that
are not visible in the command line).

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: iustinp

- Move symlink to “ganeti” to top dir
- Add ganeti.config_unittest.py to tests to be run
- Make sure everything is built before tests are run

Reviewed-by: iustinp

dot.

Reviewed-by: iustinp

This isdir() check leads to a broken error message. Even fixing it creates some
cases in which the error message is nebulous and unclear while removing it
makes this situation be dealt with a lot better by the _OSOndiskVersion checks.


Reviewed-by: iustinp

Reviewed-by: iustinp, ultrotter

- Document the expected change to errors.InvalidOS
- Always pass the additional argument
- Modify DiagnoseOS output to show the path


Reviewed-by: iustinp, imsnah

- Add NEWS file with major changes between versions.
- Bump RPC version number
- No longer serialize in RPC, but just convert to dict

Old Pickle based configuration files can be converted using the cfgupgrade
utility.

Reviewed-by: iustinp, ultrotter

As of now only the last OS was taken into consideration by diagnose, fix by
storing them all and displaying for now only the first. Also display the source
path for valid OSes.


Reviewed-by: imsnah

Abstract the _OSSearch function, to look for an OS in the search path
Make OSFromDisk accept an optional base_dir, rather than the os_dir itself


Reviewed-by: iustinp

First part of the OS search path cleanup. _OSOndiskversion is only ever called
once, and with that argument set, so let's make it mandatory.

Reviewed-by: iustinp

People might not have read all the documentation and might not expect their ssh configuration
and specially keys to be changed. Adding this warning will inform them before it happens.

Reviewed-by: iustinp

Reviewed-by: ultrotter