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#!/usr/bin/python |
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# |
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|
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# Copyright (C) 2006, 2007, 2008 Google Inc. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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|
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|
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# pylint: disable-msg=W0401,W0614 |
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# W0401: Wildcard import ganeti.cli |
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# W0614: Unused import %s from wildcard import (since we need cli) |
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|
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import sys |
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from optparse import make_option |
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|
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from ganeti.cli import * |
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from ganeti import cli |
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from ganeti import opcodes |
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from ganeti import utils |
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from ganeti import constants |
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from ganeti import errors |
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from ganeti import bootstrap |
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|
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|
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#: default list of field for L{ListNodes} |
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_LIST_DEF_FIELDS = [ |
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"name", "dtotal", "dfree", |
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"mtotal", "mnode", "mfree", |
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"pinst_cnt", "sinst_cnt", |
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] |
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|
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#: headers (and full field list for L{ListNodes} |
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_LIST_HEADERS = { |
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"name": "Node", "pinst_cnt": "Pinst", "sinst_cnt": "Sinst", |
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"pinst_list": "PriInstances", "sinst_list": "SecInstances", |
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"pip": "PrimaryIP", "sip": "SecondaryIP", |
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"dtotal": "DTotal", "dfree": "DFree", |
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"mtotal": "MTotal", "mnode": "MNode", "mfree": "MFree", |
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"bootid": "BootID", |
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"ctotal": "CTotal", "cnodes": "CNodes", "csockets": "CSockets", |
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"tags": "Tags", |
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"serial_no": "SerialNo", |
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"master_candidate": "MasterC", |
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"master": "IsMaster", |
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"offline": "Offline", "drained": "Drained", |
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} |
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|
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|
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@UsesRPC |
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def AddNode(opts, args): |
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"""Add a node to the cluster. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should contain only one element, the new node name |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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cl = GetClient() |
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dns_data = utils.HostInfo(args[0]) |
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node = dns_data.name |
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readd = opts.readd |
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|
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try: |
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output = cl.QueryNodes(names=[node], fields=['name', 'sip'], |
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use_locking=False) |
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node_exists, sip = output[0] |
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except (errors.OpPrereqError, errors.OpExecError): |
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node_exists = "" |
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sip = None |
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|
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if readd: |
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if not node_exists: |
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ToStderr("Node %s not in the cluster" |
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" - please retry without '--readd'", node) |
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return 1 |
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else: |
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if node_exists: |
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ToStderr("Node %s already in the cluster (as %s)" |
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" - please retry with '--readd'", node, node_exists) |
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return 1 |
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sip = opts.secondary_ip |
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|
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# read the cluster name from the master |
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output = cl.QueryConfigValues(['cluster_name']) |
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cluster_name = output[0] |
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|
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if readd: |
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# clear the offline and drain flags on the node |
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ToStdout("Resetting the 'offline' and 'drained' flags due to re-add") |
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op = opcodes.OpSetNodeParams(node_name=node, force=True, |
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offline=False, drained=False) |
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|
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result = SubmitOpCode(op, cl=cl) |
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if result: |
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ToStdout("Modified:") |
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for param, data in result: |
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ToStdout(" - %-5s -> %s", param, data) |
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else: |
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ToStderr("-- WARNING -- \n" |
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"Performing this operation is going to replace the ssh daemon" |
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" keypair\n" |
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"on the target machine (%s) with the ones of the" |
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" current one\n" |
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"and grant full intra-cluster ssh root access to/from it\n", node) |
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|
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bootstrap.SetupNodeDaemon(cluster_name, node, opts.ssh_key_check) |
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|
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op = opcodes.OpAddNode(node_name=args[0], secondary_ip=sip, |
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readd=opts.readd) |
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SubmitOpCode(op) |
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|
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|
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def ListNodes(opts, args): |
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"""List nodes and their properties. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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if opts.output is None: |
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selected_fields = _LIST_DEF_FIELDS |
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elif opts.output.startswith("+"): |
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selected_fields = _LIST_DEF_FIELDS + opts.output[1:].split(",") |
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else: |
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selected_fields = opts.output.split(",") |
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|
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output = GetClient().QueryNodes(args, selected_fields, opts.do_locking) |
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|
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if not opts.no_headers: |
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headers = _LIST_HEADERS |
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else: |
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headers = None |
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|
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unitfields = ["dtotal", "dfree", "mtotal", "mnode", "mfree"] |
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|
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numfields = ["dtotal", "dfree", |
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"mtotal", "mnode", "mfree", |
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"pinst_cnt", "sinst_cnt", |
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"ctotal", "serial_no"] |
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|
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list_type_fields = ("pinst_list", "sinst_list", "tags") |
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# change raw values to nicer strings |
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for row in output: |
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for idx, field in enumerate(selected_fields): |
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val = row[idx] |
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if field in list_type_fields: |
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val = ",".join(val) |
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elif field in ('master', 'master_candidate', 'offline', 'drained'): |
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if val: |
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val = 'Y' |
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else: |
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val = 'N' |
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elif val is None: |
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val = "?" |
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row[idx] = str(val) |
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|
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data = GenerateTable(separator=opts.separator, headers=headers, |
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fields=selected_fields, unitfields=unitfields, |
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numfields=numfields, data=output, units=opts.units) |
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for line in data: |
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ToStdout(line) |
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|
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return 0 |
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|
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|
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def EvacuateNode(opts, args): |
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"""Relocate all secondary instance from a node. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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cl = GetClient() |
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force = opts.force |
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|
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dst_node = opts.dst_node |
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iallocator = opts.iallocator |
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|
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cnt = [dst_node, iallocator].count(None) |
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if cnt != 1: |
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raise errors.OpPrereqError("One and only one of the -n and -i" |
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" options must be passed") |
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|
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selected_fields = ["name", "sinst_list"] |
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src_node = args[0] |
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|
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result = cl.QueryNodes(names=[src_node], fields=selected_fields, |
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use_locking=False) |
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src_node, sinst = result[0] |
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|
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if not sinst: |
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ToStderr("No secondary instances on node %s, exiting.", src_node) |
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return constants.EXIT_SUCCESS |
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|
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if dst_node is not None: |
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result = cl.QueryNodes(names=[dst_node], fields=["name"], |
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use_locking=False) |
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dst_node = result[0][0] |
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|
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if src_node == dst_node: |
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raise errors.OpPrereqError("Evacuate node needs different source and" |
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" target nodes (node %s given twice)" % |
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src_node) |
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txt_msg = "to node %s" % dst_node |
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else: |
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txt_msg = "using iallocator %s" % iallocator |
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|
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sinst = utils.NiceSort(sinst) |
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|
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if not force and not AskUser("Relocate instance(s) %s from node\n" |
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" %s %s?" % |
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(",".join("'%s'" % name for name in sinst), |
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src_node, txt_msg)): |
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return constants.EXIT_CONFIRMATION |
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|
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ops = [] |
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for iname in sinst: |
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op = opcodes.OpReplaceDisks(instance_name=iname, |
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remote_node=dst_node, |
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mode=constants.REPLACE_DISK_CHG, |
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iallocator=iallocator, |
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disks=[]) |
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ops.append(op) |
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|
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job_id = cli.SendJob(ops, cl=cl) |
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cli.PollJob(job_id, cl=cl) |
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|
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|
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def FailoverNode(opts, args): |
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"""Failover all primary instance on a node. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should be an empty list |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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cl = GetClient() |
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force = opts.force |
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selected_fields = ["name", "pinst_list"] |
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|
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# these fields are static data anyway, so it doesn't matter, but |
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# locking=True should be safer |
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result = cl.QueryNodes(names=args, fields=selected_fields, |
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use_locking=False) |
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node, pinst = result[0] |
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|
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if not pinst: |
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ToStderr("No primary instances on node %s, exiting.", node) |
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return 0 |
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|
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pinst = utils.NiceSort(pinst) |
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|
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retcode = 0 |
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|
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if not force and not AskUser("Fail over instance(s) %s?" % |
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(",".join("'%s'" % name for name in pinst))): |
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return 2 |
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|
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jex = JobExecutor(cl=cl) |
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for iname in pinst: |
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op = opcodes.OpFailoverInstance(instance_name=iname, |
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ignore_consistency=opts.ignore_consistency) |
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jex.QueueJob(iname, op) |
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results = jex.GetResults() |
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bad_cnt = len([row for row in results if not row[0]]) |
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if bad_cnt == 0: |
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ToStdout("All %d instance(s) failed over successfully.", len(results)) |
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else: |
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ToStdout("There were errors during the failover:\n" |
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"%d error(s) out of %d instance(s).", bad_cnt, len(results)) |
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return retcode |
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|
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|
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def MigrateNode(opts, args): |
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"""Migrate all primary instance on a node. |
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|
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""" |
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cl = GetClient() |
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force = opts.force |
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selected_fields = ["name", "pinst_list"] |
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|
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result = cl.QueryNodes(names=args, fields=selected_fields, use_locking=False) |
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node, pinst = result[0] |
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|
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if not pinst: |
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ToStdout("No primary instances on node %s, exiting." % node) |
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return 0 |
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|
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pinst = utils.NiceSort(pinst) |
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|
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retcode = 0 |
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|
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if not force and not AskUser("Migrate instance(s) %s?" % |
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(",".join("'%s'" % name for name in pinst))): |
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return 2 |
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|
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jex = JobExecutor(cl=cl) |
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for iname in pinst: |
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op = opcodes.OpMigrateInstance(instance_name=iname, live=opts.live, |
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cleanup=False) |
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jex.QueueJob(iname, op) |
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|
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results = jex.GetResults() |
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bad_cnt = len([row for row in results if not row[0]]) |
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if bad_cnt == 0: |
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ToStdout("All %d instance(s) migrated successfully.", len(results)) |
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else: |
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ToStdout("There were errors during the migration:\n" |
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"%d error(s) out of %d instance(s).", bad_cnt, len(results)) |
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return retcode |
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|
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|
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def ShowNodeConfig(opts, args): |
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"""Show node information. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should either be an empty list, in which case |
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we show information about all nodes, or should contain |
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a list of nodes to be queried for information |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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cl = GetClient() |
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result = cl.QueryNodes(fields=["name", "pip", "sip", |
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"pinst_list", "sinst_list", |
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"master_candidate", "drained", "offline"], |
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names=args, use_locking=False) |
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|
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for (name, primary_ip, secondary_ip, pinst, sinst, |
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is_mc, drained, offline) in result: |
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ToStdout("Node name: %s", name) |
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ToStdout(" primary ip: %s", primary_ip) |
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ToStdout(" secondary ip: %s", secondary_ip) |
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ToStdout(" master candidate: %s", is_mc) |
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ToStdout(" drained: %s", drained) |
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ToStdout(" offline: %s", offline) |
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if pinst: |
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ToStdout(" primary for instances:") |
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for iname in utils.NiceSort(pinst): |
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ToStdout(" - %s", iname) |
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else: |
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ToStdout(" primary for no instances") |
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if sinst: |
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ToStdout(" secondary for instances:") |
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for iname in utils.NiceSort(sinst): |
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ToStdout(" - %s", iname) |
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else: |
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ToStdout(" secondary for no instances") |
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|
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return 0 |
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|
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|
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def RemoveNode(opts, args): |
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"""Remove a node from the cluster. |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should contain only one element, the name of |
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the node to be removed |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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op = opcodes.OpRemoveNode(node_name=args[0]) |
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SubmitOpCode(op) |
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return 0 |
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|
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|
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def ListVolumes(opts, args): |
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"""List logical volumes on node(s). |
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|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should either be an empty list, in which case |
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we list data for all nodes, or contain a list of nodes |
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to display data only for those |
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@rtype: int |
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@return: the desired exit code |
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|
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""" |
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if opts.output is None: |
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selected_fields = ["node", "phys", "vg", |
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"name", "size", "instance"] |
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else: |
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selected_fields = opts.output.split(",") |
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|
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op = opcodes.OpQueryNodeVolumes(nodes=args, output_fields=selected_fields) |
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output = SubmitOpCode(op) |
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|
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if not opts.no_headers: |
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headers = {"node": "Node", "phys": "PhysDev", |
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"vg": "VG", "name": "Name", |
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"size": "Size", "instance": "Instance"} |
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else: |
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headers = None |
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|
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unitfields = ["size"] |
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|
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numfields = ["size"] |
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|
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data = GenerateTable(separator=opts.separator, headers=headers, |
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fields=selected_fields, unitfields=unitfields, |
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numfields=numfields, data=output, units=opts.units) |
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|
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for line in data: |
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ToStdout(line) |
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|
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return 0 |
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|
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|
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def SetNodeParams(opts, args): |
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"""Modifies a node. |
438 |
|
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@param opts: the command line options selected by the user |
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@type args: list |
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@param args: should contain only one element, the node name |
442 |
@rtype: int |
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@return: the desired exit code |
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|
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""" |
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if [opts.master_candidate, opts.drained, opts.offline].count(None) == 3: |
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ToStderr("Please give at least one of the parameters.") |
448 |
return 1 |
449 |
|
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if opts.master_candidate is not None: |
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candidate = opts.master_candidate == 'yes' |
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else: |
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candidate = None |
454 |
if opts.offline is not None: |
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offline = opts.offline == 'yes' |
456 |
else: |
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offline = None |
458 |
|
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if opts.drained is not None: |
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drained = opts.drained == 'yes' |
461 |
else: |
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drained = None |
463 |
op = opcodes.OpSetNodeParams(node_name=args[0], |
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master_candidate=candidate, |
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offline=offline, |
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drained=drained, |
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force=opts.force) |
468 |
|
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# even if here we process the result, we allow submit only |
470 |
result = SubmitOrSend(op, opts) |
471 |
|
472 |
if result: |
473 |
ToStdout("Modified node %s", args[0]) |
474 |
for param, data in result: |
475 |
ToStdout(" - %-5s -> %s", param, data) |
476 |
return 0 |
477 |
|
478 |
|
479 |
commands = { |
480 |
'add': (AddNode, ARGS_ONE, |
481 |
[DEBUG_OPT, |
482 |
make_option("-s", "--secondary-ip", dest="secondary_ip", |
483 |
help="Specify the secondary ip for the node", |
484 |
metavar="ADDRESS", default=None), |
485 |
make_option("--readd", dest="readd", |
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default=False, action="store_true", |
487 |
help="Readd old node after replacing it"), |
488 |
make_option("--no-ssh-key-check", dest="ssh_key_check", |
489 |
default=True, action="store_false", |
490 |
help="Disable SSH key fingerprint checking"), |
491 |
], |
492 |
"[-s ip] [--readd] [--no-ssh-key-check] <node_name>", |
493 |
"Add a node to the cluster"), |
494 |
'evacuate': (EvacuateNode, ARGS_ONE, |
495 |
[DEBUG_OPT, FORCE_OPT, |
496 |
make_option("-n", "--new-secondary", dest="dst_node", |
497 |
help="New secondary node", metavar="NODE", |
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default=None), |
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make_option("-I", "--iallocator", metavar="<NAME>", |
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help="Select new secondary for the instance" |
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" automatically using the" |
502 |
" <NAME> iallocator plugin", |
503 |
default=None, type="string"), |
504 |
], |
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"[-f] {-I <iallocator> | -n <dst>} <node>", |
506 |
"Relocate the secondary instances from a node" |
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" to other nodes (only for instances with drbd disk template)"), |
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'failover': (FailoverNode, ARGS_ONE, |
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[DEBUG_OPT, FORCE_OPT, |
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make_option("--ignore-consistency", dest="ignore_consistency", |
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action="store_true", default=False, |
512 |
help="Ignore the consistency of the disks on" |
513 |
" the secondary"), |
514 |
], |
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"[-f] <node>", |
516 |
"Stops the primary instances on a node and start them on their" |
517 |
" secondary node (only for instances with drbd disk template)"), |
518 |
'migrate': (MigrateNode, ARGS_ONE, |
519 |
[DEBUG_OPT, FORCE_OPT, |
520 |
make_option("--non-live", dest="live", |
521 |
default=True, action="store_false", |
522 |
help="Do a non-live migration (this usually means" |
523 |
" freeze the instance, save the state," |
524 |
" transfer and only then resume running on the" |
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" secondary node)"), |
526 |
], |
527 |
"[-f] <node>", |
528 |
"Migrate all the primary instance on a node away from it" |
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" (only for instances of type drbd)"), |
530 |
'info': (ShowNodeConfig, ARGS_ANY, [DEBUG_OPT], |
531 |
"[<node_name>...]", "Show information about the node(s)"), |
532 |
'list': (ListNodes, ARGS_ANY, |
533 |
[DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT, SYNC_OPT], |
534 |
"[nodes...]", |
535 |
"Lists the nodes in the cluster. The available fields" |
536 |
" are (see the man page for details): %s" |
537 |
" The default field list is (in order): %s." % |
538 |
(", ".join(_LIST_HEADERS), ", ".join(_LIST_DEF_FIELDS))), |
539 |
'modify': (SetNodeParams, ARGS_ONE, |
540 |
[DEBUG_OPT, FORCE_OPT, |
541 |
SUBMIT_OPT, |
542 |
make_option("-C", "--master-candidate", dest="master_candidate", |
543 |
choices=('yes', 'no'), default=None, |
544 |
help="Set the master_candidate flag on the node"), |
545 |
make_option("-O", "--offline", dest="offline", |
546 |
choices=('yes', 'no'), default=None, |
547 |
help="Set the offline flag on the node"), |
548 |
make_option("-D", "--drained", dest="drained", |
549 |
choices=('yes', 'no'), default=None, |
550 |
help="Set the drained flag on the node"), |
551 |
], |
552 |
"<instance>", "Alters the parameters of an instance"), |
553 |
'remove': (RemoveNode, ARGS_ONE, [DEBUG_OPT], |
554 |
"<node_name>", "Removes a node from the cluster"), |
555 |
'volumes': (ListVolumes, ARGS_ANY, |
556 |
[DEBUG_OPT, NOHDR_OPT, SEP_OPT, USEUNITS_OPT, FIELDS_OPT], |
557 |
"[<node_name>...]", "List logical volumes on node(s)"), |
558 |
'list-tags': (ListTags, ARGS_ONE, [DEBUG_OPT], |
559 |
"<node_name>", "List the tags of the given node"), |
560 |
'add-tags': (AddTags, ARGS_ATLEAST(1), [DEBUG_OPT, TAG_SRC_OPT], |
561 |
"<node_name> tag...", "Add tags to the given node"), |
562 |
'remove-tags': (RemoveTags, ARGS_ATLEAST(1), [DEBUG_OPT, TAG_SRC_OPT], |
563 |
"<node_name> tag...", "Remove tags from the given node"), |
564 |
} |
565 |
|
566 |
|
567 |
if __name__ == '__main__': |
568 |
sys.exit(GenericMain(commands, override={"tag_type": constants.TAG_NODE})) |