X-Git-Url: https://code.grnet.gr/git/ganeti-local/blobdiff_plain/3ef10550ea85eff3daea4c12f715a301565ea030..55cf7d83014fb5d729e6b83ae8a8f152dff4336f:/scripts/gnt-node diff --git a/scripts/gnt-node b/scripts/gnt-node index a22c2d8..6e2d686 100755 --- a/scripts/gnt-node +++ b/scripts/gnt-node @@ -1,7 +1,7 @@ #!/usr/bin/python # -# Copyright (C) 2006, 2007 Google Inc. +# Copyright (C) 2006, 2007, 2008 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 @@ -19,83 +19,268 @@ # 02110-1301, USA. +# pylint: disable-msg=W0401,W0614 +# W0401: Wildcard import ganeti.cli +# W0614: Unused import %s from wildcard import (since we need cli) + import sys from optparse import make_option from ganeti.cli import * from ganeti import opcodes -from ganeti import logger from ganeti import utils from ganeti import constants +from ganeti import errors +from ganeti import bootstrap + + +#: default list of field for L{ListNodes} +_LIST_DEF_FIELDS = [ + "name", "dtotal", "dfree", + "mtotal", "mnode", "mfree", + "pinst_cnt", "sinst_cnt", + ] +@UsesRPC def AddNode(opts, args): - """Add node cli-to-processor bridge.""" - 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]) - op = opcodes.OpAddNode(node_name=args[0], secondary_ip=opts.secondary_ip) + """Add a node to the cluster. + + @param opts: the command line options selected by the user + @type args: list + @param args: should contain only one element, the new node name + @rtype: int + @return: the desired exit code + + """ + cl = GetClient() + dns_data = utils.HostInfo(args[0]) + node = dns_data.name + + if not opts.readd: + try: + output = cl.QueryNodes(names=[node], fields=['name']) + except (errors.OpPrereqError, errors.OpExecError): + pass + else: + ToStderr("Node %s already in the cluster (as %s)" + " - please use --readd", args[0], output[0][0]) + return 1 + + # read the cluster name from the master + output = cl.QueryConfigValues(['cluster_name']) + cluster_name = output[0] + + 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", node) + + bootstrap.SetupNodeDaemon(cluster_name, node, opts.ssh_key_check) + + op = opcodes.OpAddNode(node_name=args[0], secondary_ip=opts.secondary_ip, + readd=opts.readd) SubmitOpCode(op) def ListNodes(opts, args): """List nodes and their properties. + @param opts: the command line options selected by the user + @type args: list + @param args: should be an empty list + @rtype: int + @return: the desired exit code + """ if opts.output is None: - selected_fields = ["name", "dtotal", "dfree", - "mtotal", "mnode", "mfree", - "pinst_cnt", "sinst_cnt"] + selected_fields = _LIST_DEF_FIELDS + elif opts.output.startswith("+"): + selected_fields = _LIST_DEF_FIELDS + opts.output[1:].split(",") else: selected_fields = opts.output.split(",") - op = opcodes.OpQueryNodes(output_fields=selected_fields, names=[]) - output = SubmitOpCode(op) + output = GetClient().QueryNodes([], selected_fields) if not opts.no_headers: - headers = {"name": "Node", "pinst_cnt": "Pinst", "sinst_cnt": "Sinst", - "pinst_list": "PriInstances", "sinst_list": "SecInstances", - "pip": "PrimaryIP", "sip": "SecondaryIP", - "dtotal": "DTotal", "dfree": "DFree", - "mtotal": "MTotal", "mnode": "MNode", "mfree": "MFree", - "bootid": "BootID"} + headers = { + "name": "Node", "pinst_cnt": "Pinst", "sinst_cnt": "Sinst", + "pinst_list": "PriInstances", "sinst_list": "SecInstances", + "pip": "PrimaryIP", "sip": "SecondaryIP", + "dtotal": "DTotal", "dfree": "DFree", + "mtotal": "MTotal", "mnode": "MNode", "mfree": "MFree", + "bootid": "BootID", + "ctotal": "CTotal", + "tags": "Tags", + "serial_no": "SerialNo", + "master_candidate": "MasterC", + "master": "IsMaster", + } else: headers = None - if opts.human_readable: - unitfields = ["dtotal", "dfree", "mtotal", "mnode", "mfree"] - else: - unitfields = None + unitfields = ["dtotal", "dfree", "mtotal", "mnode", "mfree"] numfields = ["dtotal", "dfree", "mtotal", "mnode", "mfree", - "pinst_cnt", "sinst_cnt"] + "pinst_cnt", "sinst_cnt", + "ctotal", "serial_no"] + list_type_fields = ("pinst_list", "sinst_list", "tags") # 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": + if field in list_type_fields: val = ",".join(val) + elif field in ('master', 'master_candidate'): + if val: + val = 'Y' + else: + val = 'N' elif val is None: val = "?" row[idx] = str(val) data = GenerateTable(separator=opts.separator, headers=headers, fields=selected_fields, unitfields=unitfields, - numfields=numfields, data=output) + numfields=numfields, data=output, units=opts.units) for line in data: - logger.ToStdout(line) + ToStdout(line) return 0 +def EvacuateNode(opts, args): + """Relocate all secondary instance from a node. + + @param opts: the command line options selected by the user + @type args: list + @param args: should be an empty list + @rtype: int + @return: the desired exit code + + """ + 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: + 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, + remote_node=dst_node, + mode=constants.REPLACE_DISK_ALL, + disks=["sda", "sdb"]) + try: + ToStdout("Replacing disks for instance %s", iname) + SubmitOpCode(op) + ToStdout("Instance %s has been relocated", iname) + good_cnt += 1 + except errors.GenericError, err: + nret, msg = FormatError(err) + retcode |= nret + ToStderr("Error replacing disks for instance %s: %s", iname, msg) + bad_cnt += 1 + + if retcode == constants.EXIT_SUCCESS: + ToStdout("All %d instance(s) relocated successfully.", good_cnt) + else: + ToStdout("There were errors during the relocation:\n" + "%d error(s) out of %d instance(s).", bad_cnt, good_cnt + bad_cnt) + return retcode + + +def FailoverNode(opts, args): + """Failover all primary instance on a node. + + @param opts: the command line options selected by the user + @type args: list + @param args: should be an empty list + @rtype: int + @return: the desired exit code + + """ + 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: + 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: + ToStdout("Failing over instance %s", iname) + SubmitOpCode(op) + ToStdout("Instance %s has been failed over", iname) + good_cnt += 1 + except errors.GenericError, err: + nret, msg = FormatError(err) + retcode |= nret + ToStderr("Error failing over instance %s: %s", iname, msg) + bad_cnt += 1 + + if retcode == 0: + ToStdout("All %d instance(s) failed over successfully.", good_cnt) + else: + ToStdout("There were errors during the failover:\n" + "%d error(s) out of %d instance(s).", bad_cnt, good_cnt + bad_cnt) + return retcode + + def ShowNodeConfig(opts, args): """Show node information. + @param opts: the command line options selected by the user + @type args: list + @param args: should either be an empty list, in which case + we show information about all nodes, or should contain + a list of nodes to be queried for information + @rtype: int + @return: the desired exit code + """ op = opcodes.OpQueryNodes(output_fields=["name", "pip", "sip", "pinst_list", "sinst_list"], @@ -103,34 +288,52 @@ def ShowNodeConfig(opts, args): 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) + ToStdout("Node name: %s", name) + ToStdout(" primary ip: %s", primary_ip) + ToStdout(" secondary ip: %s", secondary_ip) if pinst: - logger.ToStdout(" primary for instances:") + ToStdout(" primary for instances:") for iname in pinst: - logger.ToStdout(" - %s" % iname) + ToStdout(" - %s", iname) else: - logger.ToStdout(" primary for no instances") + ToStdout(" primary for no instances") if sinst: - logger.ToStdout(" secondary for instances:") + ToStdout(" secondary for instances:") for iname in sinst: - logger.ToStdout(" - %s" % iname) + ToStdout(" - %s", iname) else: - logger.ToStdout(" secondary for no instances") + ToStdout(" secondary for no instances") return 0 def RemoveNode(opts, args): - """Remove node cli-to-processor bridge.""" + """Remove a node from the cluster. + + @param opts: the command line options selected by the user + @type args: list + @param args: should contain only one element, the name of + the node to be removed + @rtype: int + @return: the desired exit code + + """ op = opcodes.OpRemoveNode(node_name=args[0]) SubmitOpCode(op) + return 0 def ListVolumes(opts, args): """List logical volumes on node(s). + @param opts: the command line options selected by the user + @type args: list + @param args: should either be an empty list, in which case + we list data for all nodes, or contain a list of nodes + to display data only for those + @rtype: int + @return: the desired exit code + """ if opts.output is None: selected_fields = ["node", "phys", "vg", @@ -148,35 +351,100 @@ def ListVolumes(opts, args): else: headers = None - if opts.human_readable: - unitfields = ["size"] - else: - unitfields = None + unitfields = ["size"] numfields = ["size"] data = GenerateTable(separator=opts.separator, headers=headers, fields=selected_fields, unitfields=unitfields, - numfields=numfields, data=output) + numfields=numfields, data=output, units=opts.units) for line in data: - logger.ToStdout(line) + ToStdout(line) return 0 +def SetNodeParams(opts, args): + """Modifies a node. + + @param opts: the command line options selected by the user + @type args: list + @param args: should contain only one element, the node name + @rtype: int + @return: the desired exit code + + """ + if opts.master_candidate is None: + ToStderr("Please give at least one of the parameters.") + return 1 + + candidate = opts.master_candidate == 'yes' + op = opcodes.OpSetNodeParams(node_name=args[0], + master_candidate=candidate, + force=opts.force) + + # even if here we process the result, we allow submit only + result = SubmitOrSend(op, opts) + + if result: + ToStdout("Modified node %s", args[0]) + for param, data in result: + ToStdout(" - %-5s -> %s", param, data) + return 0 + + 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),], - "", "Add a node to the cluster"), + metavar="ADDRESS", default=None), + make_option("--readd", dest="readd", + default=False, action="store_true", + help="Readd old node after replacing it"), + make_option("--no-ssh-key-check", dest="ssh_key_check", + default=True, action="store_false", + help="Disable SSH key fingerprint checking"), + ], + "[-s ip] [--readd] [--no-ssh-key-check] ", + "Add a node to the cluster"), + 'evacuate': (EvacuateNode, ARGS_FIXED(2), + [DEBUG_OPT, FORCE_OPT], + "[-f] ", + "Relocate the secondary instances from the first node" + " to the second one (only for instances with drbd disk template" + ), + '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] ", + "Stops the primary instances on a node and start them on their" + " secondary node (only for instances with drbd disk template)"), 'info': (ShowNodeConfig, ARGS_ANY, [DEBUG_OPT], "[...]", "Show information about the node(s)"), 'list': (ListNodes, ARGS_NONE, - [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT], - "", "Lists the nodes in the cluster"), + [DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, + SUBMIT_OPT], + "", "Lists the nodes in the cluster. The available fields" + " are (see the man page for details): name, pinst_cnt, pinst_list," + " sinst_cnt, sinst_list, pip, sip, dtotal, dfree, mtotal, mnode," + " mfree, bootid, cpu_count, serial_no." + " The default field list is" + " (in order): %s." % ", ".join(_LIST_DEF_FIELDS), + ), + 'modify': (SetNodeParams, ARGS_ONE, + [DEBUG_OPT, FORCE_OPT, + SUBMIT_OPT, + make_option("-C", "--master-candidate", dest="master_candidate", + choices=('yes', 'no'), default=None, + help="Set the master_candidate flag on the node"), + ], + "", "Alters the parameters of an instance"), 'remove': (RemoveNode, ARGS_ONE, [DEBUG_OPT], "", "Removes a node from the cluster"), 'volumes': (ListVolumes, ARGS_ANY,