gnt-node 10.5 KB
Newer Older
Iustin Pop's avatar
Iustin Pop committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
#!/usr/bin/python
#

# Copyright (C) 2006, 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


import sys
from optparse import make_option

from ganeti.cli import *
from ganeti import opcodes
from ganeti import logger
from ganeti import utils
29
from ganeti import constants
Iustin Pop's avatar
Iustin Pop committed
30
from ganeti import errors
Iustin Pop's avatar
Iustin Pop committed
31 32 33 34


def AddNode(opts, args):
  """Add node cli-to-processor bridge."""
35 36 37 38
  logger.ToStderr("-- WARNING -- \n"
    "Performing this operation is going to replace the ssh daemon keypair\n"
    "on the target machine (%s) with the ones of the current one\n"
    "and grant full intra-cluster ssh root access to/from it\n" % args[0])
Iustin Pop's avatar
Iustin Pop committed
39 40 41 42 43 44 45 46 47 48 49
  op = opcodes.OpAddNode(node_name=args[0], secondary_ip=opts.secondary_ip)
  SubmitOpCode(op)


def ListNodes(opts, args):
  """List nodes and their properties.

  """
  if opts.output is None:
    selected_fields = ["name", "dtotal", "dfree",
                       "mtotal", "mnode", "mfree",
50
                       "pinst_cnt", "sinst_cnt"]
Iustin Pop's avatar
Iustin Pop committed
51 52 53
  else:
    selected_fields = opts.output.split(",")

54
  op = opcodes.OpQueryNodes(output_fields=selected_fields, names=[])
Iustin Pop's avatar
Iustin Pop committed
55 56 57
  output = SubmitOpCode(op)

  if not opts.no_headers:
58 59
    headers = {"name": "Node", "pinst_cnt": "Pinst", "sinst_cnt": "Sinst",
               "pinst_list": "PriInstances", "sinst_list": "SecInstances",
60 61
               "pip": "PrimaryIP", "sip": "SecondaryIP",
               "dtotal": "DTotal", "dfree": "DFree",
62 63
               "mtotal": "MTotal", "mnode": "MNode", "mfree": "MFree",
               "bootid": "BootID"}
64 65 66 67 68 69 70 71
  else:
    headers = None

  if opts.human_readable:
    unitfields = ["dtotal", "dfree", "mtotal", "mnode", "mfree"]
  else:
    unitfields = None

72 73 74 75 76 77 78 79 80 81 82 83 84 85 86
  numfields = ["dtotal", "dfree",
               "mtotal", "mnode", "mfree",
               "pinst_cnt", "sinst_cnt"]

  # change raw values to nicer strings
  for row in output:
    for idx, field in enumerate(selected_fields):
      val = row[idx]
      if field == "pinst_list":
        val = ",".join(val)
      elif field == "sinst_list":
        val = ",".join(val)
      elif val is None:
        val = "?"
      row[idx] = str(val)
87

88 89 90 91 92
  data = GenerateTable(separator=opts.separator, headers=headers,
                       fields=selected_fields, unitfields=unitfields,
                       numfields=numfields, data=output)
  for line in data:
    logger.ToStdout(line)
Iustin Pop's avatar
Iustin Pop committed
93 94 95 96

  return 0


Iustin Pop's avatar
Iustin Pop committed
97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
def EvacuateNode(opts, args):
  """Relocate all secondary instance from a node.

  """
  force = opts.force
  selected_fields = ["name", "sinst_list"]
  src_node, dst_node = args

  op = opcodes.OpQueryNodes(output_fields=selected_fields, names=[src_node])
  result = SubmitOpCode(op)
  src_node, sinst = result[0]
  op = opcodes.OpQueryNodes(output_fields=["name"], names=[dst_node])
  result = SubmitOpCode(op)
  dst_node = result[0][0]

  if src_node == dst_node:
    raise errors.OpPrereqError("Evacuate node needs different source and"
                               " target nodes (node %s given twice)" %
                               src_node)

  if not sinst:
    logger.ToStderr("No secondary instances on node %s, exiting." % src_node)
    return constants.EXIT_SUCCESS

  sinst = utils.NiceSort(sinst)

  retcode = constants.EXIT_SUCCESS

  if not force and not AskUser("Relocate instance(s) %s from node\n"
                               " %s to node\n %s?" %
                               (",".join("'%s'" % name for name in sinst),
                               src_node, dst_node)):
    return constants.EXIT_CONFIRMATION

  good_cnt = bad_cnt = 0
  for iname in sinst:
    op = opcodes.OpReplaceDisks(instance_name=iname,
134 135 136
                                remote_node=dst_node,
                                mode=constants.REPLACE_DISK_ALL,
                                disks=["sda", "sdb"])
Iustin Pop's avatar
Iustin Pop committed
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157
    try:
      logger.ToStdout("Replacing disks for instance %s" % iname)
      SubmitOpCode(op)
      logger.ToStdout("Instance %s has been relocated" % iname)
      good_cnt += 1
    except errors.GenericError, err:
      nret, msg = FormatError(err)
      retcode |= nret
      logger.ToStderr("Error replacing disks for instance %s: %s" %
                      (iname, msg))
      bad_cnt += 1

  if retcode == constants.EXIT_SUCCESS:
    logger.ToStdout("All %d instance(s) relocated successfully." % good_cnt)
  else:
    logger.ToStdout("There were errors during the relocation:\n"
                    "%d error(s) out of %d instance(s)." %
                    (bad_cnt, good_cnt + bad_cnt))
  return retcode


Iustin Pop's avatar
Iustin Pop committed
158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204
def FailoverNode(opts, args):
  """Failover all primary instance on a node.

  """
  force = opts.force
  selected_fields = ["name", "pinst_list"]

  op = opcodes.OpQueryNodes(output_fields=selected_fields, names=args)
  result = SubmitOpCode(op)
  node, pinst = result[0]

  if not pinst:
    logger.ToStderr("No primary instances on node %s, exiting." % node)
    return 0

  pinst = utils.NiceSort(pinst)

  retcode = 0

  if not force and not AskUser("Fail over instance(s) %s?" %
                               (",".join("'%s'" % name for name in pinst))):
    return 2

  good_cnt = bad_cnt = 0
  for iname in pinst:
    op = opcodes.OpFailoverInstance(instance_name=iname,
                                    ignore_consistency=opts.ignore_consistency)
    try:
      logger.ToStdout("Failing over instance %s" % iname)
      SubmitOpCode(op)
      logger.ToStdout("Instance %s has been failed over" % iname)
      good_cnt += 1
    except errors.GenericError, err:
      nret, msg = FormatError(err)
      retcode |= nret
      logger.ToStderr("Error failing over instance %s: %s" % (iname, msg))
      bad_cnt += 1

  if retcode == 0:
    logger.ToStdout("All %d instance(s) failed over successfully." % good_cnt)
  else:
    logger.ToStdout("There were errors during the failover:\n"
                    "%d error(s) out of %d instance(s)." %
                    (bad_cnt, good_cnt + bad_cnt))
  return retcode


Iustin Pop's avatar
Iustin Pop committed
205 206 207 208
def ShowNodeConfig(opts, args):
  """Show node information.

  """
209 210
  op = opcodes.OpQueryNodes(output_fields=["name", "pip", "sip",
                                           "pinst_list", "sinst_list"],
211
                            names=args)
Iustin Pop's avatar
Iustin Pop committed
212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
  result = SubmitOpCode(op)

  for name, primary_ip, secondary_ip, pinst, sinst in result:
    logger.ToStdout("Node name: %s" % name)
    logger.ToStdout("  primary ip: %s" % primary_ip)
    logger.ToStdout("  secondary ip: %s" % secondary_ip)
    if pinst:
      logger.ToStdout("  primary for instances:")
      for iname in pinst:
        logger.ToStdout("    - %s" % iname)
    else:
      logger.ToStdout("  primary for no instances")
    if sinst:
      logger.ToStdout("  secondary for instances:")
      for iname in sinst:
        logger.ToStdout("    - %s" % iname)
    else:
      logger.ToStdout("  secondary for no instances")

  return 0


def RemoveNode(opts, args):
  """Remove node cli-to-processor bridge."""
  op = opcodes.OpRemoveNode(node_name=args[0])
  SubmitOpCode(op)


240 241 242 243 244 245 246 247 248 249 250 251 252 253
def ListVolumes(opts, args):
  """List logical volumes on node(s).

  """
  if opts.output is None:
    selected_fields = ["node", "phys", "vg",
                       "name", "size", "instance"]
  else:
    selected_fields = opts.output.split(",")

  op = opcodes.OpQueryNodeVolumes(nodes=args, output_fields=selected_fields)
  output = SubmitOpCode(op)

  if not opts.no_headers:
254 255 256 257 258 259 260 261 262 263 264 265 266
    headers = {"node": "Node", "phys": "PhysDev",
               "vg": "VG", "name": "Name",
               "size": "Size", "instance": "Instance"}
  else:
    headers = None

  if opts.human_readable:
    unitfields = ["size"]
  else:
    unitfields = None

  numfields = ["size"]

267 268 269 270 271 272
  data = GenerateTable(separator=opts.separator, headers=headers,
                       fields=selected_fields, unitfields=unitfields,
                       numfields=numfields, data=output)

  for line in data:
    logger.ToStdout(line)
273 274 275 276

  return 0


Iustin Pop's avatar
Iustin Pop committed
277 278 279 280 281 282
commands = {
  'add': (AddNode, ARGS_ONE,
          [DEBUG_OPT,
           make_option("-s", "--secondary-ip", dest="secondary_ip",
                       help="Specify the secondary ip for the node",
                       metavar="ADDRESS", default=None),],
283
          "[-s] <node_name>", "Add a node to the cluster"),
Iustin Pop's avatar
Iustin Pop committed
284 285 286 287 288
  'evacuate': (EvacuateNode, ARGS_FIXED(2),
               [DEBUG_OPT, FORCE_OPT],
               "[-f] <src_node> <dst_node>",
               "Relocate the secondary instances from the first node"
               " to the second one (only for instances of type remote_raid1)"),
Iustin Pop's avatar
Iustin Pop committed
289 290 291 292 293 294 295 296 297 298
  'failover': (FailoverNode, ARGS_ONE,
               [DEBUG_OPT, FORCE_OPT,
                make_option("--ignore-consistency", dest="ignore_consistency",
                            action="store_true", default=False,
                            help="Ignore the consistency of the disks on"
                            " the secondary"),
                ],
               "[-f] <node>",
               "Stops the primary instances on a node and start them on their"
               " secondary node (only for instances of type remote_raid1)"),
Iustin Pop's avatar
Iustin Pop committed
299 300 301
  'info': (ShowNodeConfig, ARGS_ANY, [DEBUG_OPT],
           "[<node_name>...]", "Show information about the node(s)"),
  'list': (ListNodes, ARGS_NONE,
302
           [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT],
Iustin Pop's avatar
Iustin Pop committed
303 304 305
           "", "Lists the nodes in the cluster"),
  'remove': (RemoveNode, ARGS_ONE, [DEBUG_OPT],
             "<node_name>", "Removes a node from the cluster"),
306 307 308
  'volumes': (ListVolumes, ARGS_ANY,
              [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT],
              "[<node_name>...]", "List logical volumes on node(s)"),
309 310
  'list-tags': (ListTags, ARGS_ONE, [DEBUG_OPT],
                "<node_name>", "List the tags of the given node"),
311
  'add-tags': (AddTags, ARGS_ATLEAST(1), [DEBUG_OPT, TAG_SRC_OPT],
312
               "<node_name> tag...", "Add tags to the given node"),
313
  'remove-tags': (RemoveTags, ARGS_ATLEAST(1), [DEBUG_OPT, TAG_SRC_OPT],
314
                  "<node_name> tag...", "Remove tags from the given node"),
Iustin Pop's avatar
Iustin Pop committed
315 316 317 318
  }


if __name__ == '__main__':
319
  sys.exit(GenericMain(commands, override={"tag_type": constants.TAG_NODE}))