*~
-*.pyc
Makefile
Makefile.in
/autom4te.cache
/configure
/config.log
-/config.py
/config.status
/local*
/install-sh
/mclu-*.tar.gz
/mclu
-/mclu.spec
/missing
/run
-/xmls/*.xml
+++ /dev/null
-Configuring mclu
-----------------
-
-Introduction
-------------
-
-mclu is based around the idea that you have a small collection of
-fairly similar "nodes". Ideally they would be identical nodes, if you
-want live migration to work seamlessly, but they don't have to be.
-
-Here is a picture of the cluster that I run mclu on:
-http://rwmj.wordpress.com/2014/04/28/caseless-virtualization-cluster-part-5/#content
-
-Nodes, control node, NFS server
--------------------------------
-
-There is also one "control" node, which could be your laptop or could
-be one of the cluster nodes. This is where you run the 'mclu'
-command, and also where the single configuration file is located
-(mclu.conf, usually located in /etc/mclu).
-
-Each node must be accessible from the control node over ssh. Each
-node must be running the libvirt daemon (libvirtd).
-
-mclu uses a mix of ssh commands and remote libvirt to manage the
-nodes. You should configure ssh so it can access the nodes without
-needing passwords (eg. using ssh-agent). If you use the default
-libvirt URI (see config file) then you also need to set up
-passwordless root ssh access to the nodes; there are other ways to
-configure this, eg. opening the libvirtd port on each node, but they
-are probably not as secure.
-
-Each node, including the control node, must have access to shared
-storage where the guest disk images are stored. The easiest way to do
-this is to export /var/lib/libvirt/images from one machine and
-NFS-mount it on all the nodes (and also to have a nice fast network).
-Cluster filesystems are another possibility. mclu does NOT support
-non-shared storage nor storage migration.
-
-Wake-on-LAN
------------
-
-The nodes can be up or down. mclu deals transparently with nodes
-being switched off. If you configure wake-on-LAN (usually a BIOS
-setting) then mclu will be able to wake up nodes.
-
-Running guests
---------------
-
-The guest libvirt XML files are also stored on the control node
-(usually /etc/mclu/xmls). Guests are created as transient, which
-means the libvirt daemon running on each node does not have a
-persistent configuration of any guest.
-
-Guests run on a single node at a time. You can list/start/stop/
-migrate them using mclu. The requirement for a guest to be running on
-a single node may be enforced if you run libvirt sanlock or virtlockd.
-This requires further configuration, see:
-http://libvirt.org/locking.html
-https://rwmj.wordpress.com/2014/05/08/setting-up-virtlockd-on-nfs/#content
-
-If sanlock/virtlockd is not running then mclu will try its best not to
-have the guest running in two places at once (if it happens, this will
-cause permanent disk corruption in the guest).
-
-Migration
----------
-
-For guest live migration to work transparently, you will probably want
-to configure libvirt bridged networking and open firewall ports
-49152-49215 on every node.
-
-Bridged networking means that each guest appears as a local machine on
-your network, and if it migrates then network connections will not be
-interrupted. See:
-http://wiki.libvirt.org/page/Networking#Bridged_networking_.28aka_.22shared_physical_device.22.29
-
-The firewall ports have to be opened because libvirt cannot (yet?) do
-fully managed migration over two SSH connections (even though the
-documentation says it can). Hopefully they will fix this soon.
-
-Editing guest configuration or disk images
-------------------------------------------
-
-The guest configuration (libvirt XML) is stored in the xmls directory
-(usually /etc/mclu/xmls). You can edit this file directly if you want.
-Changes will not take effect until the guest is restarted.
-
-The guest disk images are located in the images directory (usually
-/var/lib/libvirt/images). You can use libguestfs against these in
-read-only mode (or read-write mode PROVIDED the guest is not running).
-
-You can also create or import guests by dropping an XML file and an
-image into those directories. (But it might be easier to use the
-'mclu build' and 'mclu import' subcommands).
-
-SELinux
--------
-
-I have SELinux enabled on all nodes of my cluster. However it wasn't
-easy to get this far. In particular you need to enable one or
-probably both of these booleans:
-
- setsebool -P virt_use_nfs on
- setsebool -P use_nfs_home_dirs on
-
-Other tips
-----------
-
-Install ntp on all the nodes so that the date is kept in synch.
-
-Install lm_sensors on all nodes so you can monitor temperature, fan
-speed and so on.
+++ /dev/null
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+++ /dev/null
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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.
-
-ACLOCAL_AMFLAGS = -I m4
-
-# Why doesn't automake include _SCRIPTS and _DATA ...?
-EXTRA_DIST = CONFIGURATION mclu.spec $(pkgdata_SCRIPTS) $(conf_DATA)
-
-# This rule just ensures that the wrapper binary and Python files get
-# installed when we do 'make install'.
-
-bin_SCRIPTS = mclu
-
-pkgdata_SCRIPTS = \
- config.py \
- lib.py \
- libvirt_xml.py \
- mclu.py \
- mclu_build.py \
- mclu_console.py \
- mclu_import.py \
- mclu_info.py \
- mclu_list.py \
- mclu_migrate.py \
- mclu_off.py \
- mclu_on.py \
- mclu_reboot.py \
- mclu_start.py \
- mclu_status.py \
- mclu_stop.py \
- mclu_viewer.py \
- node.py
-
-# Configuration file.
-
-confdir = $(sysconfdir)/$(PACKAGE_NAME)
-conf_DATA = mclu.conf
-
-install-data-hook:
- mkdir -p $(DESTDIR)/$(sysconfdir)/$(PACKAGE_NAME)/xmls
-
-CLEANFILES = \
- *~ \
- *.pyc \
- config.py \
- mclu \
- mclu.spec
-
-# Run pylint.
-
-lint:
- pylint -E $(pkgdata_SCRIPTS)
+++ /dev/null
-mclu (mini cluster) is a virtualization cluster manager.
-
-The key features:
-
- - Entirely command line driven.
-
- - No required dependencies except ansible (on the client only),
- libvirt and ssh.
-
- - Nothing to install on the nodes except libvirtd and sshd.
-
- - Only designed for small clusters (up to around 10-20 hosts).
-
- - Simple configuration.
-
-Example commands
-----------------------------------------------------------------------
-
- mclu status Display status of the cluster
- mclu list List all virtual machines on the cluster
- mclu on ham0 Switch on (wake-on-LAN) node 'ham0'
- mclu off ham0 Power off node 'ham0' in the cluster
- mclu start ham0:vm Start vm on node 'ham0'
- mclu stop ham0:* Stop all VMs on node 'ham0'
- mclu migrate *:* ham2: Live migrate all VMs to 'ham2'
- mclu build ham3:vm fedora-20 Build and run a new Fedora 20 VM on node 'ham3'
- mclu console ham3:fedora-20 Show me the serial console of a VM
- mclu viewer ham3:fedora-20 Show me the graphical console of a VM
- mclu info Print general configuration information
- mclu --help Print help on all commands
-
-Since the mclu cluster is based on an ansible "hosts group", you can
-also issue ansible commands, eg:
-
- ansible cluster -u root -a "yum -y update" Update all nodes in the cluster
- ansible cluster -m ping Ping all nodes
-
-Configuration notes
-----------------------------------------------------------------------
-
-See `CONFIGURATION'.
-
-Dependencies
-----------------------------------------------------------------------
-
-To get a full list of the required and optional dependencies, look at:
-
- - configure.ac
- - mclu.spec.in
-
-Building it
-----------------------------------------------------------------------
-
-If building straight from git, then do:
-
- autoreconf -i
-
-To build:
-
- ./configure --prefix /usr --sysconfdir /etc
- make
-
-To run without installing:
-
- - Edit the configuration file (mclu.conf).
-
- - Add the hosts group (usually called '[cluster]') to /etc/ansible/hosts.
- You can set $ANSIBLE_HOSTS to change the location of this file.
-
- - Run commands such as:
-
- ./run status
- ./run list
-
-To install:
-
- - sudo make install
-
- - Edit the configuration file (/etc/mclu/mclu.conf).
-
- - Add the hosts group (usually called '[cluster]') to /etc/ansible/hosts.
-
- - Run commands such as:
-
- mclu status
- mclu list
-
-Developer information
-----------------------------------------------------------------------
-
-The license is GPLv2+.
-
-The git repo is:
-
- http://git.annexia.org/?p=mclu.git;a=summary
-
-There is no mclu mailing list. Send patches to the virt-tools mailing list:
-
- http://www.redhat.com/mailman/listinfo/virt-tools-list
+++ /dev/null
-# mclu (mini cluster)
-# @configure_input@
-# Copyright (C) 2014 Red Hat 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.
-
-PACKAGE_NAME="@PACKAGE_NAME@"
-PACKAGE_VERSION="@PACKAGE_VERSION@"
-
-prefix="@prefix@"
-sysconfdir="@sysconfdir@"
-# Avoid stupid crap with datarootdir:
-pkgdatadir="@prefix@/share/@PACKAGE_NAME@"
-
-SSH="@SSH@"
-WOL="@WOL@"
-VIRT_BUILDER="@VIRT_BUILDER@"
-VIRT_VIEWER="@VIRT_VIEWER@"
+++ /dev/null
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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.
-
-AC_INIT([mclu],1.0)
-AM_INIT_AUTOMAKE([foreign])
-AC_CONFIG_MACRO_DIR([m4])
-
-dnl Python 2.x (required).
-AC_PATH_PROG([PYTHON],[python])
-if test "x$PYTHON" = "xno"; then
- AC_MSG_ERROR([Python 2.x is required])
-fi
-
-AC_MSG_CHECKING([Python version])
-PYTHON_VERSION_MAJOR=`$PYTHON -c "import sys; print (sys.version_info@<:@0@:>@)"`
-PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info@<:@1@:>@)"`
-AC_MSG_RESULT([$PYTHON_VERSION_MAJOR.$PYTHON_VERSION_MINOR])
-
-if test $PYTHON_VERSION_MAJOR -ne 2; then
- AC_MSG_ERROR([Python version 2 is required, found $PYTHON_VERSION_MAJOR])
-fi
-
-dnl SSH client (required).
-AC_PATH_PROG([SSH],[ssh],[no])
-if test "x$SSH" = "xno"; then
- AC_MSG_ERROR([SSH client is required])
-fi
-
-dnl Ansible client (required).
-dnl Actually the ansible command line tool is not used, but we do use
-dnl the Python library. XXX Should check for that instead.
-AC_PATH_PROG([ANSIBLE],[ansible],[no])
-if test "x$ANSIBLE" = "xno"; then
- AC_MSG_ERROR([ansible is required])
-fi
-
-dnl Wake-on-LAN client (optional).
-AC_PATH_PROG([WOL],[wol],[no])
-
-dnl virt-builder (optional).
-AC_PATH_PROG([VIRT_BUILDER],[virt-builder],[no])
-
-dnl virt-viewer (optional).
-AC_PATH_PROG([VIRT_VIEWER],[virt-viewer],[no])
-
-AC_CONFIG_FILES([run], [chmod +x,-w run])
-AC_CONFIG_FILES([Makefile config.py mclu mclu.spec])
-AC_OUTPUT
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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
-import os
-import re
-
-import libvirt
-import ansible.runner
-import ansible.inventory
-
-# Get separate list of running and inactive guests.
-def get_all_guests (c):
- running = {}
- inactive = {}
-
- # Find running guests.
- runner = ansible.runner.Runner (
- remote_user = 'root',
- module_name = 'virt',
- module_args = 'command=list_vms', # XXX ignore state=shutdown
- pattern = c['nodes_group'],
- )
- data = runner.run ()
-
- for node in data['contacted'].keys():
- # Get the flat list of guests from this node:
- vms = data['contacted'][node]['list_vms']
- # Store which node the guest is running on, and turn list into a map.
- for vm in vms:
- if node in running:
- sys.exit ("error: virtual machine %s is running on two nodes!" % node)
- running[vm] = { 'vm' : vm, 'node' : node }
-
- # Find inactive guests (XML configuration files).
- for name in get_guest_configs (c):
- if name not in running:
- inactive[name] = name
-
- return running, inactive
-
-# Get the names of guests from the XML configuration files in xmls_dir.
-def get_guest_configs (c):
- names = []
- for filename in sorted (os.listdir (c['xmls_dir'])):
- m = re.search (r'^(.*)\.xml$', filename)
- if m:
- names.append (m.group (1))
- return names
-
-# Start a guest running on a given node. The node must not be
-# running anywhere already.
-def start_guest (c, node_name, guest_name):
- fp = open ("%s/%s.xml" % (c['xmls_dir'], guest_name), "r")
- xml = fp.read ()
- fp.close ()
-
- conn = libvirt.open (uri_of_node (node_name))
- if conn == None:
- sys.exit ("error: could not open a libvirt connection to %s" %
- node_name)
- conn.createXML (xml)
-
-def pick_any_node_which_is_up (c):
- inventory = ansible.inventory.Inventory ()
- runner = ansible.runner.Runner (
- remote_user = 'root',
- module_name = 'ping',
- inventory = inventory,
- pattern = c['nodes_group'],
- )
- data = runner.run ()
- if len (data['contacted']) == 0:
- sys.exit ("error: no nodes are up, use mclu on")
- return data['contacted'].keys()[0]
-
-# XXX Make this configurable.
-def uri_of_node (node_name):
- return "qemu+ssh://root@%s/system" % node_name
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 os
-import random
-import sys
-
-# Generate libvirt XML. Would be nice to use virt-install here, but
-# it doesn't work: RHBZ#1095789
-def generate_libvirt_xml (vm_name, memory, vcpus, virtio, output):
- network_model = "virtio"
- if not virtio:
- network_model = "e1000"
-
- # Give the network a fixed MAC address, otherwise libvirt will
- # generate a random one on every guest restart.
- network_mac = "52:54:00:%02x:%02x:%02x" % (random.randint (0, 0xff),
- random.randint (0, 0xff),
- random.randint (0, 0xff))
-
- # XXX Quoting, and we should use a real XML generator.
- xml = """
-<domain type='kvm'>
- <name>%s</name>
- <memory unit='MiB'>%d</memory>
- <currentMemory unit='MiB'>%d</currentMemory>
- <vcpu>%d</vcpu>
- <os>
- <type>hvm</type>
- <boot dev='hd'/>
- </os>
- <features>
- <acpi/>
- <apic/>
- <pae/>
- </features>
- <cpu mode='host-model' fallback='allow' />
- <clock offset='utc'>
- <timer name='rtc' tickpolicy='catchup'/>
- <timer name='pit' tickpolicy='delay'/>
- <timer name='hpet' present='no'/>
- </clock>
- <on_poweroff>destroy</on_poweroff>
- <on_reboot>restart</on_reboot>
- <on_crash>restart</on_crash>
- <devices>
- <interface type='bridge'>
- <mac address='%s'/>
- <source bridge='br0'/>
- <model type='%s'/>
- </interface>
- <console type='pty'>
- <target type='virtio' port='0'/>
- </console>
- <input type='tablet' bus='usb'/>
- <input type='mouse' bus='ps2'/>
- <!-- <input type='keyboard' bus='ps2'/> -->
- <graphics type='vnc' autoport='yes'/>
- <video>
- <model type='cirrus' vram='9216' heads='1'/>
- </video>
-""" % (vm_name, memory, memory, vcpus, network_mac, network_model)
-
- # virtio-scsi or IDE disk:
- if virtio:
- xml += """
- <controller type="scsi" index="0" model="virtio-scsi"/>
- <disk type='file' device='disk'>
- <driver name='qemu' type='qcow2' cache='none' io='native'/>
- <source file='%s'/>
- <target dev='sda' bus='scsi'/>
- </disk>
-""" % output
- else:
- xml += """
- <disk type='file' device='disk'>
- <driver name='qemu' type='qcow2' cache='none' io='native'/>
- <source file='%s'/>
- <target dev='sda' bus='ide'/>
- </disk>
-""" % output
-
- xml += """
- </devices>
-</domain>
-"""
-
- return xml
+++ /dev/null
-# mclu (mini cluster) configuration file.
-#
-# This file is parsed by Python's ConfigParser.
-#
-# This is the real configuration file I use to control my
-# virtualization cluster. For a picture of it see:
-# http://rwmj.wordpress.com/2014/04/28/caseless-virtualization-cluster-part-5/#content
-
-# Some defaults are provided:
-# %(home)s expands to $HOME
-# %(config_dir)s expands to the directory containing mclu.conf
-# Note that in the Python '%(...)s' syntax, 's' means 'string'. It is
-# not part of the expanded output.
-
-# The global section has general configuration.
-[global]
-
-# The location of guest disk images. This location MUST be shared
-# between all nodes including the machine running mclu (eg. using NFS
-# or some sort of clustered storage).
-images_dir = /var/lib/libvirt/images
-
-# The location of libvirt XML configuration files for guests.
-#
-# Note: This does NOT need to be shared or even visible on the cluster
-# nodes. But it must be available on the machine running 'mclu'.
-xmls_dir = %(config_dir)s/xmls/
-
-# The name of the ansible group which contains the list of nodes
-# in the cluster. You have to edit /etc/ansible/hosts and add a
-# section:
-#
-# [cluster]
-# ham0 mac=74:d4:35:55:85:3f
-# ham1 mac=74:d4:35:51:ab:86
-# ham2 mac=74:d4:35:55:82:96
-# ham3 mac=74:d4:35:55:84:b4
-#
-# The mac=... (MAC addresses) are optional, to support wake-on-LAN.
-#
-# If you don't want to edit /etc/ansible/hosts then you can export
-# $ANSIBLE_HOSTS to name another file instead.
-nodes_group = cluster
+++ /dev/null
-#!/bin/sh -
-# mclu (mini cluster)
-# @configure_input@
-# Copyright (C) 2014 Red Hat Inc.
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-pkgdatadir="@prefix@/share/@PACKAGE_NAME@"
-
-if [ ! -x "$pkgdatadir/mclu.py" ]; then
- echo "mclu: wrapper script cannot find installed mclu.py"
- echo "Did you forget to run 'make install'?"
- echo "OR if you want to run without installing, use:"
- echo " ./run [args...]"
- exit 1
-fi
-"$pkgdatadir/mclu.py" "$@"
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import ConfigParser
-import os
-import re
-import sys
-
-import config
-import mclu_build
-import mclu_console
-import mclu_import
-import mclu_info
-import mclu_list
-import mclu_migrate
-import mclu_off
-import mclu_on
-import mclu_reboot
-import mclu_start
-import mclu_status
-import mclu_stop
-import mclu_viewer
-
-parser = argparse.ArgumentParser (
- prog='mclu',
- description='Mini virtualization cluster management tool',
-)
-parser.add_argument (
- '-f',
- type=file,
- help='specify location of the configuration file',
- metavar='MCLU.CONF',
-)
-
-# Add subcommands.
-subparsers = parser.add_subparsers ()
-mclu_build.cmdline (subparsers)
-mclu_console.cmdline (subparsers)
-mclu_import.cmdline (subparsers)
-mclu_info.cmdline (subparsers)
-mclu_list.cmdline (subparsers)
-mclu_migrate.cmdline (subparsers)
-mclu_off.cmdline (subparsers)
-mclu_on.cmdline (subparsers)
-mclu_reboot.cmdline (subparsers)
-mclu_start.cmdline (subparsers)
-mclu_status.cmdline (subparsers)
-mclu_stop.cmdline (subparsers)
-mclu_viewer.cmdline (subparsers)
-
-args = parser.parse_args()
-
-# Default location of the config file if not defined on the command line:
-if not args.f:
- config_dir = config.sysconfdir + "/" + config.PACKAGE_NAME
- args.f = open (config_dir + "/" + "mclu.conf")
-else:
- # config_dir is the directory containing mclu.conf
- config_dir = os.path.dirname (args.f.name)
-
-# Configuration file default settings. You cannot set defaults per
-# section, so we have to rely on setting names not overlapping.
-conf_defaults = {
- "home" : os.getenv ("HOME"),
- "config_dir" : config_dir,
-}
-
-# Read the configuration file.
-conf = ConfigParser.SafeConfigParser (conf_defaults)
-conf.readfp (args.f)
-
-# Global configuration.
-images_dir = conf.get ("global", "images_dir")
-if not os.path.isdir (images_dir):
- sys.exit ("configuration error: [globals] 'images_dir' (%s) directory does not exist" % images_dir)
-xmls_dir = conf.get ("global", "xmls_dir")
-if not os.path.isdir (xmls_dir):
- sys.exit ("configuration error: [globals] 'xmls_dir' (%s) directory does not exist", xmls_dir)
-nodes_group = conf.get ("global", "nodes_group")
-
-# A config dict with less-used configuration settings.
-c = {
- "config_file" : args.f.name,
- "config_dir" : config_dir,
- "images_dir" : images_dir,
- "nodes_group" : nodes_group,
- "xmls_dir" : xmls_dir,
-
- "conf" : conf,
-}
-
-# Run the subcommand.
-args.run (c, args)
+++ /dev/null
-Name: @PACKAGE_NAME@
-Version: @PACKAGE_VERSION@
-Release: 1%{?dist}
-Summary: Mini cluster, a virtualization cluster manager
-
-BuildArch: noarch
-
-License: GPLv2+
-URL: http://git.annexia.org/?p=mclu.git;a=summary
-Source0: @PACKAGE_NAME@-@PACKAGE_VERSION@.tar.gz
-
-BuildRequires: python-devel
-BuildRequires: libvirt-python
-BuildRequires: /usr/bin/ssh
-BuildRequires: ansible
-
-Requires: libvirt-python
-Requires: /usr/bin/ssh
-Requires: ansible
-
-# These are optional: comment them out to get a less functional mclu.
-BuildRequires: /usr/bin/wol
-BuildRequires: /usr/bin/virt-builder
-BuildRequires: /usr/bin/virt-viewer
-Requires: /usr/bin/wol
-Requires: /usr/bin/virt-builder
-Requires: /usr/bin/virt-viewer
-
-
-%description
-mclu (mini cluster) is a virtualization cluster manager.
-
-
-%prep
-%setup -q
-
-
-%build
-%configure
-make %{?_smp_mflags}
-
-
-%install
-make DESTDIR=$RPM_BUILD_ROOT install
-
-
-%files
-%doc CONFIGURATION COPYING README
-%dir %{_sysconfdir}/mclu/
-%dir %{_sysconfdir}/mclu/xmls/
-%config(noreplace) %{_sysconfdir}/mclu/mclu.conf
-%{_bindir}/mclu
-%{_datadir}/%{name}/
-
-
-%changelog
-* Thu May 8 2014 Richard W.M. Jones <rjones@redhat.com> - @PACKAGE_VERSION@-1
-- Initial release.
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import os
-import re
-import subprocess
-import sys
-import libvirt
-
-import config
-import lib
-import libvirt_xml
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'build',
- help='build and run a new virtual machine',
- )
- p.add_argument (
- '--memory', default=1024, type=int,
- help='RAM to give to guest (default unit is megabytes)'
- )
- p.add_argument (
- '--vcpus', default=4, type=int,
- help='virtual CPUs to give to guest'
- )
- p.add_argument (
- '--virtio', action='store_const', const=True,
- help='use virtio disks and network'
- )
- p.add_argument (
- '--no-start', action='store_const', const=True,
- help='do not start the guest after building'
- )
- p.add_argument (
- '--size', required=True,
- help='size of disk'
- )
- p.add_argument (
- 'name',
- help='name of the new VM (or use "vm:name")'
- )
- p.add_argument (
- 'os_version',
- help='OS & version of guest (see virt-builder docs)'
- )
- p.add_argument (
- 'vbargs', nargs='*',
- help='virt-builder arguments (after "--")'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- # Did the user request a particular node? If not, we'll run it
- # on any node which is up.
- m = re.match (r'^(.*):(.*)$', args.name)
- if m:
- node_name = m.group (1)
- vm_name = m.group (2)
- else:
- node_name = lib.pick_any_node_which_is_up (c)
- vm_name = args.name
-
- # Get all the guests, so we can tell if the name is a duplicate.
- running, inactive = lib.get_all_guests (c)
-
- if vm_name in running or vm_name in inactive:
- sys.exit ("error: VM name (%s) already exists" % vm_name)
-
- output = '%s/%s.img' % (c['images_dir'], vm_name)
-
- # Call out to virt-builder to build the disk image.
- vbargs = [
- config.VIRT_BUILDER,
- args.os_version,
- '--output', output,
- '--format', 'qcow2',
- ]
- if args.size:
- vbargs.extend (['--size', args.size])
- if args.vbargs:
- vbargs.extend (args.vbargs)
- subprocess.check_call (vbargs)
-
- # XXX Unfortunately this is necessary so qemu can access the disk.
- os.chmod (output, 0666)
-
- # Generate the XML. Would be nice to use virt-install here, but
- # it doesn't work: RHBZ#1095789
- xml = libvirt_xml.generate_libvirt_xml (vm_name,
- args.memory,
- args.vcpus,
- args.virtio,
- output)
-
- # Write the XML to the xmls_dir.
- fp = open ("%s/%s.xml" % (c['xmls_dir'], vm_name), "w")
- fp.write (xml)
- fp.close ()
-
- if not args.no_start:
- # Start the guest.
- lib.start_guest (c, node_name, vm_name)
- print "guest started on node %s" % node_name
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import re
-import sys
-import subprocess
-
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'console',
- help='connect to console of named VM',
- )
- p.add_argument (
- 'vm',
- help='vm (or node:vm) to connect to'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- running, _ = lib.get_all_guests (c)
-
- m = re.match (r'^(.*):(.*)$', args.vm)
- if m:
- # We don't actually care about the node, but we check it
- # is the expected one below.
- node_name_check = m.group (1)
- vm_name = m.group (2)
- else:
- node_name_check = None
- vm_name = args.vm
-
- if vm_name not in running:
- sys.exit ("error: vm %s not found or not running" % vm_name)
-
- vm = running[vm_name]['vm']
- node_name = running[vm_name]['node']
-
- if node_name_check and node_name != node_name_check:
- sys.exit ("error: vm %s is not running on node %s, did you mean %s:%s ?" %
- (vm_name, node_name_check, node_name, vm_name))
-
- # Run the virsh console command.
- subprocess.call (["virsh",
- "-c", lib.uri_of_node (node_name),
- "console",
- vm_name])
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import os
-import re
-import sys
-import subprocess
-
-import config
-import lib
-import libvirt_xml
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'import',
- help='import and existing virtual machine',
- )
- p.add_argument (
- '--memory', default=1024, type=int,
- help='RAM to give to guest (default unit is megabytes)'
- )
- p.add_argument (
- '--vcpus', default=4, type=int,
- help='virtual CPUs to give to guest'
- )
- p.add_argument (
- '--virtio', action='store_const', const=True,
- help='use virtio disks and network'
- )
- p.add_argument (
- '--no-start', action='store_const', const=True,
- help='do not start the guest after importing'
- )
- p.add_argument (
- 'name',
- help='name of the new VM (or use "vm:name")'
- )
- p.add_argument (
- 'disk',
- help='disk image to import'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- # Did the user request a particular node? If not, we'll run it
- # on any node which is up.
- m = re.match (r'^(.*):(.*)$', args.name)
- if m:
- node_name = m.group (1)
- vm_name = m.group (2)
- else:
- node_name = lib.pick_any_node_which_is_up (c)
- vm_name = args.name
-
- # Get all the guests, so we can tell if the name is a duplicate.
- running, inactive = lib.get_all_guests (c)
-
- if vm_name in running or vm_name in inactive:
- sys.exit ("error: VM name (%s) already exists" % vm_name)
-
- output = '%s/%s.img' % (c['images_dir'], vm_name)
-
- # Use qemu-img to convert the input format (whatever it is) to qcow2,
- # and also to copy it.
- subprocess.check_call ([
- "qemu-img",
- "convert",
- args.disk,
- "-O", "qcow2",
- output
- ])
-
- # XXX Unfortunately this is necessary so qemu can access the disk.
- os.chmod (output, 0666)
-
- # Generate the XML. Would be nice to use virt-install here, but
- # it doesn't work: RHBZ#1095789
- xml = libvirt_xml.generate_libvirt_xml (vm_name,
- args.memory,
- args.vcpus,
- args.virtio,
- output)
-
- # Write the XML to the xmls_dir.
- fp = open ("%s/%s.xml" % (c['xmls_dir'], vm_name), "w")
- fp.write (xml)
- fp.close ()
-
- if not args.no_start:
- # Start the guest.
- lib.start_guest (c, node_name, vm_name)
- print "guest started on node %s" % node_name
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'info',
- help='print general configuration information',
- )
- p.set_defaults (run=run)
-
-def run (c, args, nodes):
- print "config_dir=%s" % c['config_dir']
- print "config_file=%s" % c['config_file']
- print "images_dir=%s" % c['images_dir']
- print "node_names=%s" % c['node_names']
- print "xmls_dir=%s" % c['xmls_dir']
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import libvirt
-
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'list',
- help='list virtual machines',
- )
- p.add_argument (
- '--running', action='store_const', const=True,
- help='list only running VMs'
- )
- p.add_argument (
- '--inactive', action='store_const', const=True,
- help='list only inactive VMs'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- show_running = True
- show_inactive = True
- if not args.running or not args.inactive:
- if args.running:
- show_running = True
- show_inactive = False
- if args.inactive:
- show_running = False
- show_inactive = True
-
- running, inactive = lib.get_all_guests (c)
-
- if show_running:
- for guest in sorted (running.values()):
- node_name = guest['node']
- dom_name = guest['vm']
- full_name = "%s:%s" % (node_name, dom_name)
- print "%-40s running" % full_name
-
- if show_inactive:
- for name in sorted (inactive.values()):
- print "%-40s inactive" % name
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import fnmatch
-import re
-import sys
-import libvirt
-
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'migrate',
- help='live migrate virtual machine(s)',
- )
- p.add_argument (
- 'wildcards', nargs='+',
- help='virtual machine(s) to be migrated'
- )
- p.add_argument (
- 'dest',
- help='destination node'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- running, _ = lib.get_all_guests (c)
-
- # Identify the VMs to be migrated.
- migrate_vms = []
- for vm in running.values():
- node_name = vm['node']
- vm_name = vm['vm']
- # Form the name of this VM (eg. "ham0:vm") so we can match it
- # against the wildcards (eg. "ham0:*")
- name = node_name + ":" + vm_name
- for wc in args.wildcards:
- if fnmatch.fnmatch (name, wc) or fnmatch.fnmatch (vm_name, wc):
- migrate_vms.append (vm)
-
- if not migrate_vms:
- sys.exit ("error: no VMs are going to be migrated")
-
- # Get destination node. It can be written either 'dest' or 'dest:'
- m = re.match (r'(.*):$', args.dest)
- if m:
- dest = m.group (1)
- else:
- dest = args.dest
-
- dconn = libvirt.open (lib.uri_of_node (dest))
- if dconn == None:
- sys.exit ("error: could not open a libvirt connection to %s" % dest)
-
- for vm in migrate_vms:
- sconn = libvirt.open (lib.uri_of_node (vm['node']))
- if sconn == None:
- sys.exit ("error: could not open a libvirt connection to %s" %
- vm['node'])
- dom = sconn.lookupByName (vm['vm'])
- dom.migrate (dconn, libvirt.VIR_MIGRATE_LIVE)
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import os
-import subprocess
-import sys
-import time
-
-import ansible.inventory
-import ansible.runner
-
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'off',
- help='power off a node (or nodes)'
- )
- p.add_argument (
- 'wildcard',
- help='node name(s) to be powered off (wildcard may be used)'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- inventory = ansible.inventory.Inventory ()
- inventory.subset (subset_pattern = args.wildcard)
- nodes = inventory.get_hosts (c['nodes_group'])
-
- # Check the nodes have no guests.
- running, _ = lib.get_all_guests (c)
- for node in nodes:
- for vm in running.values():
- if vm['node'] == node.name:
- sys.exit ("error: node %s has running guests, migrate them off or stop them first" % node.name)
-
- # Power them off.
- runner = ansible.runner.Runner (
- remote_user = 'root',
- module_name = 'command',
- module_args = '/sbin/poweroff',
- inventory = inventory,
- pattern = c['nodes_group'],
- )
- data = runner.run ()
-
- # Wait for them to power off.
- pings = 60
- runner = ansible.runner.Runner (
- remote_user = 'root',
- module_name = 'ping',
- inventory = inventory,
- pattern = c['nodes_group'],
- )
- while pings > 0:
- data = runner.run ()
- if len (data['contacted']) == 0:
- break
- pings -= 1
- time.sleep (1)
-
- if pings == 0:
- sys.exit ('warning: some nodes did not power off')
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import os
-import sys
-import time
-import subprocess
-
-import ansible.inventory
-import ansible.runner
-
-import config
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'on',
- help='power on a node (or nodes)'
- )
- p.add_argument (
- 'wildcard',
- help='node name(s) to be woken up (wildcard may be used)'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- inventory = ansible.inventory.Inventory ()
- inventory.subset (subset_pattern = args.wildcard)
- nodes = inventory.get_hosts (c['nodes_group'])
-
- # Wake them up.
- for node in nodes:
- vars = node.get_variables()
- if 'mac' in vars:
- devnull = open (os.devnull, "w")
- subprocess.check_call ([config.WOL, vars['mac']],
- stdout = devnull, stderr = devnull)
- else:
- print "warning: no mac= line in ansible hosts file for %s (ignored)" % node.name
-
- # Wait for them to come up.
- pings = 30
- runner = ansible.runner.Runner (
- remote_user = 'root',
- module_name = 'ping',
- inventory = inventory,
- pattern = c['nodes_group'],
- )
- while pings > 0:
- data = runner.run ()
- if len (data['dark']) == 0:
- break
- pings -= 1
- time.sleep (1)
-
- if pings == 0:
- sys.exit ('warning: some nodes did not wake up')
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import fnmatch
-import subprocess
-
-import libvirt
-
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'reboot',
- help='reboot virtual machine(s)',
- )
- p.add_argument (
- '--force', action='store_const', const=True,
- help='reset the virtual machine(s) forcibly'
- )
- p.add_argument (
- 'wildcards', nargs='+',
- help='virtual machine(s) to be rebooted'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- running, _ = lib.get_all_guests (c)
-
- for vm in running.values():
- node_name = vm['node']
- vm_name = vm['vm']
- # Form the name of this VM (eg. "ham0:vm") so we can match it
- # against the wildcards (eg. "ham0:*")
- name = node_name + ":" + vm_name
- for wc in args.wildcards:
- if fnmatch.fnmatch (name, wc) or fnmatch.fnmatch (vm_name, wc):
- if args.force:
- subprocess.check_call (["virsh",
- "-c", lib.uri_of_node (node_name),
- "reset", vm_name])
- else:
- subprocess.check_call (["virsh",
- "-c", lib.uri_of_node (node_name),
- "reboot", vm_name])
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import fnmatch
-import re
-import subprocess
-import sys
-import libvirt
-
-import config
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'start',
- help='start virtual machine(s)',
- )
- p.add_argument (
- '--viewer', action='store_const', const=True,
- help='start virt-viewer to show the graphical console'
- )
- p.add_argument (
- 'vms', nargs='+',
- help='virtual machine(s) to be started'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- _, inactive = lib.get_all_guests (c)
-
- # User supplied a list of node:VMs.
- for a in args.vms:
- m = re.match (r'^(.*):(.*)$', a)
- if m:
- node_name = m.group (1)
- wc = m.group (2)
- else:
- wc = a
- node_name = lib.pick_any_node_which_is_up (c)
- started = []
- for vm_name in inactive:
- if fnmatch.fnmatch (vm_name, wc):
- if args.viewer:
- subprocess.Popen ([config.VIRT_VIEWER,
- "-c", lib.uri_of_node (node_name),
- vm_name],
- close_fds=True)
- lib.start_guest (c, node_name, vm_name)
- started.append (vm_name)
-
- if not started:
- sys.exit ("error: no VMs matched pattern %s" % a)
-
- # Make sure we don't start the same VMs again the next
- # time around the loop:
- for vm_name in started:
- del inactive[vm_name]
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-
-import ansible.runner
-
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'status',
- help='display cluster status'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- runner = ansible.runner.Runner (
- remote_user = 'root',
- module_name = 'ping',
- pattern = c['nodes_group'],
- )
- data = runner.run ()
- for name in sorted (data['contacted']):
- print "%s\tup" % name
- for name in sorted (data['dark']):
- print "%s\tdown" % name
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import fnmatch
-import subprocess
-
-import libvirt
-
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'stop',
- help='stop virtual machine(s)',
- )
- p.add_argument (
- '--force', action='store_const', const=True,
- help='power off the virtual machine(s) forcibly'
- )
- p.add_argument (
- 'wildcards', nargs='+',
- help='virtual machine(s) to be stopped'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- running, _ = lib.get_all_guests (c)
-
- for vm in running.values():
- node_name = vm['node']
- vm_name = vm['vm']
- # Form the name of this VM (eg. "ham0:vm") so we can match it
- # against the wildcards (eg. "ham0:*")
- name = node_name + ":" + vm_name
- for wc in args.wildcards:
- if fnmatch.fnmatch (name, wc) or fnmatch.fnmatch (vm_name, wc):
- if args.force:
- subprocess.check_call (["virsh",
- "-c", lib.uri_of_node (node_name),
- "destroy", vm_name])
- else:
- subprocess.check_call (["virsh",
- "-c", lib.uri_of_node (node_name),
- "shutdown", vm_name])
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 argparse
-import re
-import sys
-import subprocess
-
-import config
-import lib
-
-def cmdline (subparsers):
- p = subparsers.add_parser (
- 'viewer',
- help='connect to graphical console of named VM',
- )
- p.add_argument (
- 'vm',
- help='vm (or node:vm) to connect to'
- )
- p.set_defaults (run=run)
-
-def run (c, args):
- running, _ = lib.get_all_guests (c)
-
- m = re.match (r'^(.*):(.*)$', args.vm)
- if m:
- # We don't actually care about the node, but we check it
- # is the expected one below.
- node_name_check = m.group (1)
- vm_name = m.group (2)
- else:
- node_name_check = None
- vm_name = args.vm
-
- if vm_name not in running:
- sys.exit ("error: vm %s not found or not running" % vm_name)
-
- vm = running[vm_name]['vm']
- node_name = running[vm_name]['node']
-
- if node_name_check and node_name != node_name_check:
- sys.exit ("error: vm %s is not running on node %s, did you mean %s:%s ?" %
- (vm_name, node_name_check, node_name, vm_name))
-
- # Run the virsh console command.
- subprocess.call ([config.VIRT_VIEWER,
- "-c", lib.uri_of_node (node_name),
- vm_name])
+++ /dev/null
-#!/usr/bin/python
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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 os
-import sys
-import subprocess
-import libvirt
-
-import config
-
-class Node:
- def __init__ (self, name, host, mac, uri):
- self.name = name
- self.host = host
- self.mac = mac
- self.uri = uri
- self.conn = None
- self.up = None
-
- def ping (self, force = False):
- """Test if node is up."""
- if not force:
- if self.up is not None:
- return self.up
-
- devnull = open (os.devnull, "w")
- r = subprocess.call (["ping", "-c", "1", self.host],
- stdout = devnull, stderr = devnull)
- self.up = r == 0
- return self.up
-
- def ssh_ping (self):
- """Test if we can open an SSH connection"""
- if self.ping ():
- devnull = open (os.devnull, "w")
- r = subprocess.call ([config.SSH, "-l", "root", self.host, ":"],
- stdout = devnull, stderr = devnull)
- return r == 0
- else:
- return False
-
- def libvirt_ping (self):
- """Test if we can open a libvirt connection"""
- if self.ping():
- conn = libvirt.openReadOnly (self.uri)
- return conn != None
- else:
- return False
-
- def wake (self):
- if not self.ping ():
- devnull = open (os.devnull, "w")
- subprocess.check_call ([config.WOL, self.mac],
- stdout = devnull, stderr = devnull)
-
- def shutdown (self):
- if self.ping ():
- devnull = open (os.devnull, "w")
- r = subprocess.call ([config.SSH, "-l", "root", self.host,
- "/sbin/poweroff"],
- stdout = devnull, stderr = devnull)
- # returns a non-zero exit status, for unknown reasons
-
- def guests (self):
- """Return the list of VMs running on this node"""
- guests = []
- if self.ping ():
- conn = self.get_connection ()
- for id in conn.listDomainsID():
- try:
- dom = conn.lookupByID (id)
- except:
- continue
- guests.append (dom)
- return guests
-
- def get_connection (self):
- """Return cached libvirt connection, fail if not possible."""
- if not self.ping ():
- sys.exit ("error: node %s is not awake" % self.name)
- if self.conn is not None:
- return self.conn
- conn = libvirt.open (self.uri)
- if conn == None:
- sys.exit ("error: could not open a libvirt connection to %s (URI: %s)" %
- (self.host, self.uri))
- self.conn = conn
- return self.conn
+++ /dev/null
-#!/bin/bash -
-# mclu (mini cluster)
-# Copyright (C) 2014 Red Hat 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.
-
-b=@abs_top_builddir@
-
-#echo $b/mclu.py -f $b/mclu.conf "$@"
-exec $b/mclu.py -f $b/mclu.conf "$@"