Change {exp,act}Code to {exp,act}Ver, which gives a better idea that
the integer fields represent version numbers.

Also:

  - errors.py: update OpPrereqError's docstring to note that an error
    code is always expected as the second argument (it was previously
    optional).

Signed-off-by: Dato Simó <dato@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Also fix one small mistake in the docstring for QuitGanetiException.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

It seems a few of the error classes are no longer used:

- LVMError, deprecated in 8c5533a5 (before ganeti 1.2.2!)
- ConfdRequestError, deprecated in b0dcdc10
- SshKeyError, introduced in the initial open source commit but never used (⁈)

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

- LoadAllowedFileStoragePaths: Loads a list of allowed file storage
  paths from a file
- CheckFileStoragePath: Checks a path against the list of allowed paths

The unit test for “utils.IsBelowDir” is updated with cases which weren't
tested before.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This was used to verify the result of instance allocation. However, this
is not logic which belongs to the cmdlib rather than to the iallocator
request itself. So abstract it by its own function. And update the
ValidateResult accordingly.

Signed-off-by: René Nussbaumer <rn@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This removes "pass" from a few definitions, making all errors
consistent.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

Commit e687ec01 (present in 2.5 since the 2.5 beta 3) did consistency
fixes across the code-base. Unfortunately this was done without enough
checks on the actual meaning of one of the fixes, which means error
re-raising in lib/errors.py is broken.

The problem is that:

  raise cls, args

is different than:

  raise cls(args)

And our unit-tests didn't catch this (this patch updates the tests).

This breakage is usually trivial, like wrong error messages:

  $ gnt-instance remove no-such-instance
  Failure: prerequisites not met for this operation:
  ("Instance 'no-such-instance' not known", 'unknown_entity')

versus:

  $ gnt-instance remove no-such-instance
  Failure: prerequisites not met for this operation:
  error type: unknown_entity, error details:
  Instance 'no-such-instance' not known

or:

  $ gnt-instance add … no-such-instance
  Failure: prerequisites not met for this operation:
  ('The given name (no-such-instance) does not resolve: Name or service not known', 'resolver_error')

versus:

  $ gnt-instance add … no-such-instance
  Failure: prerequisites not met for this operation:
  error type: resolver_error, error details:
  The given name (no-such-instance) does not resolve: Name or service not known

But in some cases where we rely on a certain data representation
(e.g. HooksAbort), this actually breaks because we try to iterate over
the wrong type:

  File "/usr/lib/python2.6/dist-packages/ganeti/cli.py", line 1907, in FormatError
     for node, script, out in err.args[0]:
  ValueError: need more than 1 value to unpack

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This exception is raised to abort before actually sending a LUXI call
(there is no LUXI server involved in the test). The testing utilities
catch the exception to report a success (i.e. the code didn't throw
an exception before due to invalid types, etc.). To allow the exception
to be thrown all the way to the test utilities, the HTTP server library
must ignore it. Also some overly generic exception handling is removed
from the RAPI request handler.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

If the PID file is already locked by another process, try to read
the content and report it as part of the error message.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This reverts commit b6267745.
This commit will be readded on master.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Added support for TLS-protected SPICE connections:

client/gnt_cluster.py, cli.py:
* added three new parameters to renew-crypto (--new-spice-certificate,
  --spice-certificate, --spice-ca-certificate) and their validation.

utils/x509.py:
* changed GenerateSelfSignedSslCert so that now also returns the
  generated key and certificate;
* added missing return value in the docstring of
  GenerateSelfSignedX509Cert.

lib/bootstrap.py:
* changed the signatures of the relevant functions and implemented
  certificates generation/writing.

tools/cfupgrade:
* changed GenerateClusterCrypto invocation to reflect the new signature;
* added SPICE certificate names.

lib/errors.py:
* added the X509CertError class.

lib/hypervisor/hv_kvm.py:
* silenced pylint warning R0915

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Identified using the “pep8” utility.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This adds the infrastructure necessary to check opcode results using
ht-based functions. Checks are added for two opcodes.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

With this parser, command line utilities will be able to provide filters
through query2 in a simplistic language. Example filters:

  name == "node3.example.com"
  master or (name == "node4.example.com")
  be/memory == 128 and name =~ /^web/i
  "inst1.example.com" in sinst_list
  status != "up"
  not master

Parts of the syntax came from Python, others from Perl. Documentation
will be added in follow-up patches.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Stephen Shirley <diamond@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This allows LUXI errors to be encoded and serialized.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Currently, masterd startup with old software versions is very confusing
for users: we present two tracebacks, with a message in the middle about
"version mismatch". This can lead to users believing that all that needs
to be done is to fix the config file.

This patch attempts to improve this by handling this case in masterd
itself (not in the child), and showing a more friendly message for this
case.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This patch unifies the netutils functions dealing with IP addresses to
three classes:
- IPAddress: Common IP address functionality
- IPv4Address: IPv4 specific functionality
- IPv6address: IPv6-specific functionality

Furthermore it adds methods to check whether an address is a loopback
address, replacing the .startswith("127") for IPv4 and adding IPv6
support.

It also provides the basis for future IPv6 address handling. Methods to
convert IP strings to their corresponding interger values will allow to
canonicalize IPv6 addresses.

Signed-off-by: Manuel Franceschini <livewire@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Also adds a generic ParseError exception.

Signed-off-by: Balazs Lecz <leczb@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Node daemon prints a lot of warnings if --no-mlock option is not specified and
ctypes module is not present.

With the following patch the warning is printed only at noded startup.

Signed-off-by: Luca Bigliardi <shammash@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Currently _LoadJobFromDisk archives job files it finds corrupted. Since
we want to use it to load files without holding locks, this could cause
a conflict: we just move the feature to _LoadJobUnlocked which is always
called with the lock held.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This exception is caught, but never thrown. It became useless when we
moved confd from on/off to enabled/disabled, but always running on all
nodes. Removing its definition and the code catching it can do no harm.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

MaybeRaise in lib/errors.py had a typo in the doc string

Signed-off-by: René Nussbaumer <rn@google.com>
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Currently a few of the LU's CheckPrereq use utils.HostInfo which raises
a resolver error in case of failure. This is an exception from the
standard that CheckPrereq should raise an OpPrereqError if the error is
in the 'pre' phase (so that it can be retried).

This patch adds a new error code (resolver_error) and a wrapper over
utils.HostInfo that just converts the ResolverError into
OpPrereqError(…, errors.ECODE_RESOLVER). It then uses this wrapper in
cmdlib, bootstrap and some scripts.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This patch introduces a two-argument style for OpPrereqError. Only the
direct raise calls in cmdlib.py are converted, other users will follow.

cli.py is modified to handle both two-argument style and the current
format. RAPI doesn't need modification as the way we encode errors is
already using a list for the error arguments, so RAPI users only need to
start checking the list length and the second argument.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This is only used in two places, in an error path that is no longer
valid since Ganeti 2.0. We remove the try..except since we should not
get it anymore (and if we do, then we should catch it in all
config.Update cases) and we remove the exception class completely.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Currently the luxi error handling is hardcoded as special encoding on
the masterd-side and special decoding on the client side. This patch
moves it to errors.py such that other parts of the code can reuse the
same encoding.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>
(cherry picked from commit 6956e9cd)

Initial confd client library implementation.  This initial version uses
asyncore, and supports answers via a callback.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This way it can be used by the client as well

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Currently we read maximum 4K packets, and don't check packets when
sending them. With this patch we move to a well defined maximum size of
60K.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Currently the luxi error handling is hardcoded as special encoding on
the masterd-side and special decoding on the client side. This patch
moves it to errors.py such that other parts of the code can reuse the
same encoding.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This patch includes HMAC authenticated json messages to the serializer.
The new interface works on any json-encodable data type, and can sign it
with a private key and an optional salt. The same private key must be
used upon message loading to verify the message.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

We no longer need OS objects to be able to represent invalid OSes. This
cleans up the code handling those cases.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

This patch converts this rpc call to the new style result, and also
changes in the process the meaning of the QuitGanetiException's
arguments and the node daemon rpc call exception handler.

The problem with the exception handler is that we used a two-stage one,
and the inner used to catch all exception (including this one), so in
the logs we always had an exception logged, instead of the normal
'leaving cluster message'. The patch also adds logging of the
exception's arguments, so that we have a trail in the logs about the
shutdown mode.

The exception's arguments were reversed from the normal RPC results
style. While it makes somewhat more sense for this exception, we change
them such that they match the rpc result format.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>