Synnefo » snf-ganeti

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"""Cluster related QA tests.

"""

import re

import tempfile

import os.path

from ganeti import constants

from ganeti import compat

from ganeti import utils

from ganeti import pathutils

import qa_config

import qa_utils

import qa_error

from qa_utils import AssertEqual, AssertCommand, GetCommandOutput

# Prefix for LVM volumes created by QA code during tests

_QA_LV_PREFIX = "qa-"

#: cluster verify command

_CLUSTER_VERIFY = ["gnt-cluster", "verify"]

def _RemoveFileFromAllNodes(filename):

  """Removes a file from all nodes.

  """

  for node in qa_config.get("nodes"):

    AssertCommand(["rm", "-f", filename], node=node)

def _CheckFileOnAllNodes(filename, content):

  """Verifies the content of the given file on all nodes.

  """

  cmd = utils.ShellQuoteArgs(["cat", filename])

  for node in qa_config.get("nodes"):

    AssertEqual(qa_utils.GetCommandOutput(node.primary, cmd), content)

# "gnt-cluster info" fields

_CIFIELD_RE = re.compile(r"^[-\s]*(?P<field>[^\s:]+):\s*(?P<value>\S.*)$")

def _GetBoolClusterField(field):

  """Get the Boolean value of a cluster field.

  This function currently assumes that the field name is unique in the cluster

  configuration. An assertion checks this assumption.

  @type field: string

  @param field: Name of the field

  @rtype: bool

  @return: The effective value of the field

  """

  master = qa_config.GetMasterNode()

  infocmd = "gnt-cluster info"

  info_out = qa_utils.GetCommandOutput(master.primary, infocmd)

  ret = None

  for l in info_out.splitlines():

    m = _CIFIELD_RE.match(l)

    # FIXME: There should be a way to specify a field through a hierarchy

    if m and m.group("field") == field:

      # Make sure that ignoring the hierarchy doesn't cause a double match

      assert ret is None

      ret = (m.group("value").lower() == "true")

  if ret is not None:

    return ret

  raise qa_error.Error("Field not found in cluster configuration: %s" % field)

# Cluster-verify errors (date, "ERROR", then error code)

_CVERROR_RE = re.compile(r"^[\w\s:]+\s+- ERROR:([A-Z0-9_-]+):")

def _GetCVErrorCodes(cvout):

  ret = set()

  for l in cvout.splitlines():

    m = _CVERROR_RE.match(l)

    if m:

      ecode = m.group(1)

      ret.add(ecode)

  return ret

def AssertClusterVerify(fail=False, errors=None):

  """Run cluster-verify and check the result

  @type fail: bool

  @param fail: if cluster-verify is expected to fail instead of succeeding

  @type errors: list of tuples

  @param errors: List of CV_XXX errors that are expected; if specified, all the

      errors listed must appear in cluster-verify output. A non-empty value

      implies C{fail=True}.

  """

  cvcmd = "gnt-cluster verify"

  mnode = qa_config.GetMasterNode()

  if errors:

    cvout = GetCommandOutput(mnode.primary, cvcmd + " --error-codes",

                             fail=True)

    actual = _GetCVErrorCodes(cvout)

    expected = compat.UniqueFrozenset(e for (_, e, _) in errors)

    if not actual.issuperset(expected):

      missing = expected.difference(actual)

      raise qa_error.Error("Cluster-verify didn't return these expected"

                           " errors: %s" % utils.CommaJoin(missing))

  else:

    AssertCommand(cvcmd, fail=fail, node=mnode)

# data for testing failures due to bad keys/values for disk parameters

_FAIL_PARAMS = ["nonexistent:resync-rate=1",

                "drbd:nonexistent=1",

                "drbd:resync-rate=invalid",

                ]

def TestClusterInitDisk():

  """gnt-cluster init -D"""

  name = qa_config.get("name")

  for param in _FAIL_PARAMS:

    AssertCommand(["gnt-cluster", "init", "-D", param, name], fail=True)

def TestClusterInit(rapi_user, rapi_secret):

  """gnt-cluster init"""

  master = qa_config.GetMasterNode()

  rapi_dir = os.path.dirname(pathutils.RAPI_USERS_FILE)

  # First create the RAPI credentials

  fh = tempfile.NamedTemporaryFile()

  try:

    fh.write("%s %s write\n" % (rapi_user, rapi_secret))

    fh.flush()

    tmpru = qa_utils.UploadFile(master.primary, fh.name)

    try:

      AssertCommand(["mkdir", "-p", rapi_dir])

      AssertCommand(["mv", tmpru, pathutils.RAPI_USERS_FILE])

    finally:

      AssertCommand(["rm", "-f", tmpru])

  finally:

    fh.close()

  # Initialize cluster

  cmd = [

    "gnt-cluster", "init",

    "--primary-ip-version=%d" % qa_config.get("primary_ip_version", 4),

    "--enabled-hypervisors=%s" % ",".join(qa_config.GetEnabledHypervisors()),

    ]

  for spec_type in ("mem-size", "disk-size", "disk-count", "cpu-count",

                    "nic-count"):

    for spec_val in ("min", "max", "std"):

      spec = qa_config.get("ispec_%s_%s" %

                           (spec_type.replace("-", "_"), spec_val), None)

      if spec:

        cmd.append("--specs-%s=%s=%d" % (spec_type, spec_val, spec))

  if master.secondary:

    cmd.append("--secondary-ip=%s" % master.secondary)

  vgname = qa_config.get("vg-name", None)

  if vgname:

    cmd.append("--vg-name=%s" % vgname)

  master_netdev = qa_config.get("master-netdev", None)

  if master_netdev:

    cmd.append("--master-netdev=%s" % master_netdev)

  nicparams = qa_config.get("default-nicparams", None)

  if nicparams:

    cmd.append("--nic-parameters=%s" %

               ",".join(utils.FormatKeyValue(nicparams)))

  # Cluster value of the exclusive-storage node parameter

  e_s = qa_config.get("exclusive-storage")

  if e_s is not None:

    cmd.extend(["--node-parameters", "exclusive_storage=%s" % e_s])

  else:

    e_s = False

  qa_config.SetExclusiveStorage(e_s)

  extra_args = qa_config.get("cluster-init-args")

  if extra_args:

    cmd.extend(extra_args)

  cmd.append(qa_config.get("name"))

  AssertCommand(cmd)

  cmd = ["gnt-cluster", "modify"]

  # hypervisor parameter modifications

  hvp = qa_config.get("hypervisor-parameters", {})

  for k, v in hvp.items():

    cmd.extend(["-H", "%s:%s" % (k, v)])

  # backend parameter modifications

  bep = qa_config.get("backend-parameters", "")

  if bep:

    cmd.extend(["-B", bep])

  if len(cmd) > 2:

    AssertCommand(cmd)

  # OS parameters

  osp = qa_config.get("os-parameters", {})

  for k, v in osp.items():

    AssertCommand(["gnt-os", "modify", "-O", v, k])

  # OS hypervisor parameters

  os_hvp = qa_config.get("os-hvp", {})

  for os_name in os_hvp:

    for hv, hvp in os_hvp[os_name].items():

      AssertCommand(["gnt-os", "modify", "-H", "%s:%s" % (hv, hvp), os_name])

def TestClusterRename():

  """gnt-cluster rename"""

  cmd = ["gnt-cluster", "rename", "-f"]

  original_name = qa_config.get("name")

  rename_target = qa_config.get("rename", None)

  if rename_target is None:

    print qa_utils.FormatError('"rename" entry is missing')

    return

  for data in [

    cmd + [rename_target],

    _CLUSTER_VERIFY,

    cmd + [original_name],

    _CLUSTER_VERIFY,

    ]:

    AssertCommand(data)

def TestClusterOob():

  """out-of-band framework"""

  oob_path_exists = "/tmp/ganeti-qa-oob-does-exist-%s" % utils.NewUUID()

  AssertCommand(_CLUSTER_VERIFY)

  AssertCommand(["gnt-cluster", "modify", "--node-parameters",

                 "oob_program=/tmp/ganeti-qa-oob-does-not-exist-%s" %

                 utils.NewUUID()])

  AssertCommand(_CLUSTER_VERIFY, fail=True)

  AssertCommand(["touch", oob_path_exists])

  AssertCommand(["chmod", "0400", oob_path_exists])

  AssertCommand(["gnt-cluster", "copyfile", oob_path_exists])

  try:

    AssertCommand(["gnt-cluster", "modify", "--node-parameters",

                   "oob_program=%s" % oob_path_exists])

    AssertCommand(_CLUSTER_VERIFY, fail=True)

    AssertCommand(["chmod", "0500", oob_path_exists])

    AssertCommand(["gnt-cluster", "copyfile", oob_path_exists])

    AssertCommand(_CLUSTER_VERIFY)

  finally:

    AssertCommand(["gnt-cluster", "command", "rm", oob_path_exists])

  AssertCommand(["gnt-cluster", "modify", "--node-parameters",

                 "oob_program="])

def TestClusterEpo():

  """gnt-cluster epo"""

  master = qa_config.GetMasterNode()

  # Assert that OOB is unavailable for all nodes

  result_output = GetCommandOutput(master.primary,

                                   "gnt-node list --verbose --no-headers -o"

                                   " powered")

  AssertEqual(compat.all(powered == "(unavail)"

                         for powered in result_output.splitlines()), True)

  # Conflicting

  AssertCommand(["gnt-cluster", "epo", "--groups", "--all"], fail=True)

  # --all doesn't expect arguments

  AssertCommand(["gnt-cluster", "epo", "--all", "some_arg"], fail=True)

  # Unless --all is given master is not allowed to be in the list

  AssertCommand(["gnt-cluster", "epo", "-f", master.primary], fail=True)

  # This shouldn't fail

  AssertCommand(["gnt-cluster", "epo", "-f", "--all"])

  # All instances should have been stopped now

  result_output = GetCommandOutput(master.primary,

                                   "gnt-instance list --no-headers -o status")

  # ERROR_down because the instance is stopped but not recorded as such

  AssertEqual(compat.all(status == "ERROR_down"

                         for status in result_output.splitlines()), True)

  # Now start everything again

  AssertCommand(["gnt-cluster", "epo", "--on", "-f", "--all"])

  # All instances should have been started now

  result_output = GetCommandOutput(master.primary,

                                   "gnt-instance list --no-headers -o status")

  AssertEqual(compat.all(status == "running"

                         for status in result_output.splitlines()), True)

def TestClusterVerify():

  """gnt-cluster verify"""

  AssertCommand(_CLUSTER_VERIFY)

  AssertCommand(["gnt-cluster", "verify-disks"])

def TestJobqueue():

  """gnt-debug test-jobqueue"""

  AssertCommand(["gnt-debug", "test-jobqueue"])

def TestDelay(node):

  """gnt-debug delay"""

  AssertCommand(["gnt-debug", "delay", "1"])

  AssertCommand(["gnt-debug", "delay", "--no-master", "1"])

  AssertCommand(["gnt-debug", "delay", "--no-master",

                 "-n", node.primary, "1"])

def TestClusterReservedLvs():

  """gnt-cluster reserved lvs"""

  vgname = qa_config.get("vg-name", constants.DEFAULT_VG)

  lvname = _QA_LV_PREFIX + "test"

  lvfullname = "/".join([vgname, lvname])

  for fail, cmd in [

    (False, _CLUSTER_VERIFY),

    (False, ["gnt-cluster", "modify", "--reserved-lvs", ""]),

    (False, ["lvcreate", "-L1G", "-n", lvname, vgname]),

    (True, _CLUSTER_VERIFY),

    (False, ["gnt-cluster", "modify", "--reserved-lvs",

             "%s,.*/other-test" % lvfullname]),

    (False, _CLUSTER_VERIFY),

    (False, ["gnt-cluster", "modify", "--reserved-lvs",

             ".*/%s.*" % _QA_LV_PREFIX]),

    (False, _CLUSTER_VERIFY),

    (False, ["gnt-cluster", "modify", "--reserved-lvs", ""]),

    (True, _CLUSTER_VERIFY),

    (False, ["lvremove", "-f", lvfullname]),

    (False, _CLUSTER_VERIFY),

    ]:

    AssertCommand(cmd, fail=fail)

def TestClusterModifyEmpty():

  """gnt-cluster modify"""

  AssertCommand(["gnt-cluster", "modify"], fail=True)

def TestClusterModifyDisk():

  """gnt-cluster modify -D"""

  for param in _FAIL_PARAMS:

    AssertCommand(["gnt-cluster", "modify", "-D", param], fail=True)

def TestClusterModifyBe():

  """gnt-cluster modify -B"""

  for fail, cmd in [

    # max/min mem

    (False, ["gnt-cluster", "modify", "-B", "maxmem=256"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *maxmem: 256$'"]),

    (False, ["gnt-cluster", "modify", "-B", "minmem=256"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *minmem: 256$'"]),

    (True, ["gnt-cluster", "modify", "-B", "maxmem=a"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *maxmem: 256$'"]),

    (True, ["gnt-cluster", "modify", "-B", "minmem=a"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *minmem: 256$'"]),

    (False, ["gnt-cluster", "modify", "-B", "maxmem=128,minmem=128"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *maxmem: 128$'"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *minmem: 128$'"]),

    # vcpus

    (False, ["gnt-cluster", "modify", "-B", "vcpus=4"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *vcpus: 4$'"]),

    (True, ["gnt-cluster", "modify", "-B", "vcpus=a"]),

    (False, ["gnt-cluster", "modify", "-B", "vcpus=1"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *vcpus: 1$'"]),

    # auto_balance

    (False, ["gnt-cluster", "modify", "-B", "auto_balance=False"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *auto_balance: False$'"]),

    (True, ["gnt-cluster", "modify", "-B", "auto_balance=1"]),

    (False, ["gnt-cluster", "modify", "-B", "auto_balance=True"]),

    (False, ["sh", "-c", "gnt-cluster info|grep '^ *auto_balance: True$'"]),

    ]:

    AssertCommand(cmd, fail=fail)

  # redo the original-requested BE parameters, if any

  bep = qa_config.get("backend-parameters", "")

  if bep:

    AssertCommand(["gnt-cluster", "modify", "-B", bep])

def TestClusterInfo():

  """gnt-cluster info"""

  AssertCommand(["gnt-cluster", "info"])

def TestClusterRedistConf():

  """gnt-cluster redist-conf"""

  AssertCommand(["gnt-cluster", "redist-conf"])

def TestClusterGetmaster():

  """gnt-cluster getmaster"""

  AssertCommand(["gnt-cluster", "getmaster"])

def TestClusterVersion():

  """gnt-cluster version"""

  AssertCommand(["gnt-cluster", "version"])

def TestClusterRenewCrypto():

  """gnt-cluster renew-crypto"""

  master = qa_config.GetMasterNode()

  # Conflicting options

  cmd = ["gnt-cluster", "renew-crypto", "--force",

         "--new-cluster-certificate", "--new-confd-hmac-key"]

  conflicting = [

    ["--new-rapi-certificate", "--rapi-certificate=/dev/null"],

    ["--new-cluster-domain-secret", "--cluster-domain-secret=/dev/null"],

    ]

  for i in conflicting:

    AssertCommand(cmd + i, fail=True)

  # Invalid RAPI certificate

  cmd = ["gnt-cluster", "renew-crypto", "--force",

         "--rapi-certificate=/dev/null"]

  AssertCommand(cmd, fail=True)

  rapi_cert_backup = qa_utils.BackupFile(master.primary,

                                         pathutils.RAPI_CERT_FILE)

  try:

    # Custom RAPI certificate

    fh = tempfile.NamedTemporaryFile()

    # Ensure certificate doesn't cause "gnt-cluster verify" to complain

    validity = constants.SSL_CERT_EXPIRATION_WARN * 3

    utils.GenerateSelfSignedSslCert(fh.name, validity=validity)

    tmpcert = qa_utils.UploadFile(master.primary, fh.name)

    try:

      AssertCommand(["gnt-cluster", "renew-crypto", "--force",

                     "--rapi-certificate=%s" % tmpcert])

    finally:

      AssertCommand(["rm", "-f", tmpcert])

    # Custom cluster domain secret

    cds_fh = tempfile.NamedTemporaryFile()

    cds_fh.write(utils.GenerateSecret())

    cds_fh.write("\n")

    cds_fh.flush()

    tmpcds = qa_utils.UploadFile(master.primary, cds_fh.name)

    try:

      AssertCommand(["gnt-cluster", "renew-crypto", "--force",

                     "--cluster-domain-secret=%s" % tmpcds])

    finally:

      AssertCommand(["rm", "-f", tmpcds])

    # Normal case

    AssertCommand(["gnt-cluster", "renew-crypto", "--force",

                   "--new-cluster-certificate", "--new-confd-hmac-key",

                   "--new-rapi-certificate", "--new-cluster-domain-secret"])

    # Restore RAPI certificate

    AssertCommand(["gnt-cluster", "renew-crypto", "--force",

                   "--rapi-certificate=%s" % rapi_cert_backup])

  finally:

    AssertCommand(["rm", "-f", rapi_cert_backup])

def TestClusterBurnin():

  """Burnin"""

  master = qa_config.GetMasterNode()

  options = qa_config.get("options", {})

  disk_template = options.get("burnin-disk-template", "drbd")

  parallel = options.get("burnin-in-parallel", False)

  check_inst = options.get("burnin-check-instances", False)

  do_rename = options.get("burnin-rename", "")

  do_reboot = options.get("burnin-reboot", True)

  reboot_types = options.get("reboot-types", constants.REBOOT_TYPES)

  # Get as many instances as we need

  instances = []

  try:

    try:

      num = qa_config.get("options", {}).get("burnin-instances", 1)

      for _ in range(0, num):

        instances.append(qa_config.AcquireInstance())

    except qa_error.OutOfInstancesError:

      print "Not enough instances, continuing anyway."

    if len(instances) < 1:

      raise qa_error.Error("Burnin needs at least one instance")

    script = qa_utils.UploadFile(master.primary, "../tools/burnin")

    try:

      # Run burnin

      cmd = [script,

             "--os=%s" % qa_config.get("os"),

             "--minmem-size=%s" % qa_config.get(constants.BE_MINMEM),

             "--maxmem-size=%s" % qa_config.get(constants.BE_MAXMEM),

             "--disk-size=%s" % ",".join(qa_config.get("disk")),

             "--disk-growth=%s" % ",".join(qa_config.get("disk-growth")),

             "--disk-template=%s" % disk_template]

      if parallel:

        cmd.append("--parallel")

        cmd.append("--early-release")

      if check_inst:

        cmd.append("--http-check")

      if do_rename:

        cmd.append("--rename=%s" % do_rename)

      if not do_reboot:

        cmd.append("--no-reboot")

      else:

        cmd.append("--reboot-types=%s" % ",".join(reboot_types))

      cmd += [inst.name for inst in instances]

      AssertCommand(cmd)

    finally:

      AssertCommand(["rm", "-f", script])

  finally:

    for inst in instances:

      inst.Release()

def TestClusterMasterFailover():

  """gnt-cluster master-failover"""

  master = qa_config.GetMasterNode()

  failovermaster = qa_config.AcquireNode(exclude=master)

  cmd = ["gnt-cluster", "master-failover"]

  try:

    AssertCommand(cmd, node=failovermaster)

    # Back to original master node

    AssertCommand(cmd, node=master)

  finally:

    failovermaster.Release()

def TestClusterMasterFailoverWithDrainedQueue():

  """gnt-cluster master-failover with drained queue"""

  drain_check = ["test", "-f", pathutils.JOB_QUEUE_DRAIN_FILE]

  master = qa_config.GetMasterNode()

  failovermaster = qa_config.AcquireNode(exclude=master)

  # Ensure queue is not drained

  for node in [master, failovermaster]:

    AssertCommand(drain_check, node=node, fail=True)

  # Drain queue on failover master

  AssertCommand(["touch", pathutils.JOB_QUEUE_DRAIN_FILE], node=failovermaster)

  cmd = ["gnt-cluster", "master-failover"]

  try:

    AssertCommand(drain_check, node=failovermaster)

    AssertCommand(cmd, node=failovermaster)

    AssertCommand(drain_check, fail=True)

    AssertCommand(drain_check, node=failovermaster, fail=True)

    # Back to original master node

    AssertCommand(cmd, node=master)

  finally:

    failovermaster.Release()

  AssertCommand(drain_check, fail=True)

  AssertCommand(drain_check, node=failovermaster, fail=True)

def TestClusterCopyfile():

  """gnt-cluster copyfile"""

  master = qa_config.GetMasterNode()

  uniqueid = utils.NewUUID()

  # Create temporary file

  f = tempfile.NamedTemporaryFile()

  f.write(uniqueid)

  f.flush()

  f.seek(0)

  # Upload file to master node

  testname = qa_utils.UploadFile(master.primary, f.name)

  try:

    # Copy file to all nodes

    AssertCommand(["gnt-cluster", "copyfile", testname])

    _CheckFileOnAllNodes(testname, uniqueid)

  finally:

    _RemoveFileFromAllNodes(testname)

def TestClusterCommand():

  """gnt-cluster command"""

  uniqueid = utils.NewUUID()

  rfile = "/tmp/gnt%s" % utils.NewUUID()

  rcmd = utils.ShellQuoteArgs(["echo", "-n", uniqueid])

  cmd = utils.ShellQuoteArgs(["gnt-cluster", "command",

                              "%s >%s" % (rcmd, rfile)])

  try:

    AssertCommand(cmd)

    _CheckFileOnAllNodes(rfile, uniqueid)

  finally:

    _RemoveFileFromAllNodes(rfile)

def TestClusterDestroy():

  """gnt-cluster destroy"""

  AssertCommand(["gnt-cluster", "destroy", "--yes-do-it"])

def TestClusterRepairDiskSizes():

  """gnt-cluster repair-disk-sizes"""

  AssertCommand(["gnt-cluster", "repair-disk-sizes"])

def TestSetExclStorCluster(newvalue):

  """Set the exclusive_storage node parameter at the cluster level.

  @type newvalue: bool

  @param newvalue: New value of exclusive_storage

  @rtype: bool

  @return: The old value of exclusive_storage

  """

  oldvalue = _GetBoolClusterField("exclusive_storage")

  AssertCommand(["gnt-cluster", "modify", "--node-parameters",

                 "exclusive_storage=%s" % newvalue])

  effvalue = _GetBoolClusterField("exclusive_storage")

  if effvalue != newvalue:

    raise qa_error.Error("exclusive_storage has the wrong value: %s instead"

                         " of %s" % (effvalue, newvalue))

  qa_config.SetExclusiveStorage(newvalue)

  return oldvalue

def TestExclStorSharedPv(node):

  """cluster-verify reports LVs that share the same PV with exclusive_storage.

  """

  vgname = qa_config.get("vg-name", constants.DEFAULT_VG)

  lvname1 = _QA_LV_PREFIX + "vol1"

  lvname2 = _QA_LV_PREFIX + "vol2"

  node_name = node.primary

  AssertCommand(["lvcreate", "-L1G", "-n", lvname1, vgname], node=node_name)

  AssertClusterVerify(fail=True, errors=[constants.CV_ENODEORPHANLV])

  AssertCommand(["lvcreate", "-L1G", "-n", lvname2, vgname], node=node_name)

  AssertClusterVerify(fail=True, errors=[constants.CV_ENODELVM,

                                         constants.CV_ENODEORPHANLV])

  AssertCommand(["lvremove", "-f", "/".join([vgname, lvname1])], node=node_name)

  AssertCommand(["lvremove", "-f", "/".join([vgname, lvname2])], node=node_name)

  AssertClusterVerify()