install webvirtmgr on Ubuntu 12.10 and manage KVM hosts with webvirtmgr

webvirtmgr is web-based KVM management tool.
https://www.webvirtmgr.net/

KVM host

root@ubuntu-1:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:    Ubuntu 12.10 Release:        12.10 Codename:       quantal root@ubuntu-1:~# uname -ri 3.5.0-18-generic x86_64 root@ubuntu-1:~# kvm --version QEMU emulator version 1.2.0 (qemu-kvm-1.2.0+noroms-0ubuntu2, Debian), Copyright (c) 2003-2008 Fabrice Bellard root@ubuntu-1:~# libvirtd --version libvirtd (libvirt) 0.9.13 root@ubuntu-1:~# virt-manager --version 0.9.3

[ install webvirtmgr on the KVM ( ubuntu 12.10 ) ]

There’s a github for webvirtmgr.
https://github.com/retspen/webvirtmgr

So , I’ll install webvirtmgr with github on the KVM host.

before installing webvirtmgr , install requreid packages for webvirtmgr to run.

# apt-get install git python-django virtinst apache2 libapache2-mod-python libapache2-mod-wsgi sasl2-bin libvirt-bin -y

[ set libvirtd to run webvirtmagr ]

enable webvirmgr to access to KVM hosts.

edit /etc/default/libvirt-bin

# egrep ^libvirtd_opts /etc/default/libvirt-bin libvirtd_opts="-d -l"

edit /etc/libvirt/libvirtd.conf

# egrep -R '(listen_tcp|listen_tls)' /etc/libvirt/libvirtd.conf | egrep -v ^# listen_tls = 0 listen_tcp = 1

# service libvirt-bin restart libvirt-bin stop/waiting libvirt-bin start/running

confirm TCP 16509 is listening

# lsof -ni:16509 COMMAND    PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME libvirtd 20441 root   13u  IPv4  54538      0t0  TCP *:16509 (LISTEN) libvirtd 20441 root   14u  IPv6  54539      0t0  TCP *:16509 (LISTEN)

add a user

# saslpasswd2 -a libvirt hattori Password: Again (for verification):

check

# sasldblistusers2 -f /etc/libvirt/passwd.db hattori@ubuntu-1: userPassword

configure the firewall

# cat /etc/ufw/applications.d/libvirtd [Libvirt] title=Virtualization library description=Open port for WebVirtMgr ports=16509/tcp

# ufw allow from any to any app Libvirt Rules updated Rules updated (v6)

connect to KVM on the local host

# virsh -c qemu+tcp://127.0.0.1/system nodeinfo Please enter your authentication name: hattori Please enter your password: CPU model:           x86_64

connect to the KVM from the remote host

# virsh -c qemu+tcp://x.x.x.x/system nodeinfo Please enter your authentication name: hattori Please enter your password: CPU model:           x86_64

- install webvirtmgr from github

# git clone git://github.com/retspen/webvirtmgr.git

setup db. nnn error

# ./manage.py syncdb Creating tables ... Creating table auth_permission Creating table auth_group_permissions Creating table auth_group Creating table auth_user_user_permissions Creating table auth_user_groups Creating table auth_user Creating table django_content_type Creating table django_session Creating table django_site Creating table django_admin_log Creating table model_host Creating table model_log You just installed Django's auth system, which means you don't have any superusers defined. Would you like to create one now? (yes/no): yes Traceback (most recent call last):  File "./manage.py", line 11, in <module>    execute_manager(settings)  File "/usr/lib/python2.7/dist-packages/django/core/management/__init__.py", line 459, in execute_manager    utility.execute()  File "/usr/lib/python2.7/dist-packages/django/core/management/__init__.py", line 382, in execute    self.fetch_command(subcommand).run_from_argv(self.argv)  File "/usr/lib/python2.7/dist-packages/django/core/management/base.py", line 196, in run_from_argv    self.execute(*args, **options.__dict__)  File "/usr/lib/python2.7/dist-packages/django/core/management/base.py", line 232, in execute    output = self.handle(*args, **options)  File "/usr/lib/python2.7/dist-packages/django/core/management/base.py", line 371, in handle    return self.handle_noargs(**options)  File "/usr/lib/python2.7/dist-packages/django/core/management/commands/syncdb.py", line 110, in handle_noargs    emit_post_sync_signal(created_models, verbosity, interactive, db)  File "/usr/lib/python2.7/dist-packages/django/core/management/sql.py", line 189, in emit_post_sync_signal    interactive=interactive, db=db)  File "/usr/lib/python2.7/dist-packages/django/dispatch/dispatcher.py", line 172, in send    response = receiver(signal=self, sender=sender, **named)  File "/usr/lib/python2.7/dist-packages/django/contrib/auth/management/__init__.py", line 73, in create_superuser    call_command("createsuperuser", interactive=True, database=db)  File "/usr/lib/python2.7/dist-packages/django/core/management/__init__.py", line 150, in call_command    return klass.execute(*args, **defaults)  File "/usr/lib/python2.7/dist-packages/django/core/management/base.py", line 232, in execute    output = self.handle(*args, **options)  File "/usr/lib/python2.7/dist-packages/django/contrib/auth/management/commands/createsuperuser.py", line 70, in handle    default_username = get_default_username()  File "/usr/lib/python2.7/dist-packages/django/contrib/auth/management/__init__.py", line 105, in get_default_username    default_username = get_system_username()  File "/usr/lib/python2.7/dist-packages/django/contrib/auth/management/__init__.py", line 85, in get_system_username    return getpass.getuser().decode(locale.getdefaultlocale()[1]) TypeError: decode() argument 1 must be string, not None root@ubuntu-1:/home/hattori/my_works/webvirtmgr# echo $? 1

googling “TypeError: decode() argument 1 must be string, not None
“ , we may solve this :

# export LANG="en_US.UTF-8"

try again.

# rm -rf webvirtmgr/ # git clone git://github.com/retspen/webvirtmgr.git # ./manage.py syncdb Creating tables ... Installing custom SQL ... Installing indexes ... Installed 0 object(s) from 0 fixture(s) root@ubuntu-1:/home/hattori/my_works/webvirtmgr# cd .. root@ubuntu-1:/home/hattori/my_works# rm -rf webvirtmgr/ root@ubuntu-1:/home/hattori/my_works# git clone git://github.com/retspen/webvirtmgr.git Cloning into 'webvirtmgr'... remote: Counting objects: 459, done. remote: Compressing objects: 100% (196/196), done. remote: Total 459 (delta 250), reused 451 (delta 242) Receiving objects: 100% (459/459), 551.48 KiB | 217 KiB/s, done. Resolving deltas: 100% (250/250), done. root@ubuntu-1:/home/hattori/my_works# cd webvirtmgr/ root@ubuntu-1:/home/hattori/my_works/webvirtmgr# ./manage.py syncdb Creating tables ... Creating table auth_permission Creating table auth_group_permissions Creating table auth_group Creating table auth_user_user_permissions Creating table auth_user_groups Creating table auth_user Creating table django_content_type Creating table django_session Creating table django_site Creating table django_admin_log Creating table model_host Creating table model_log You just installed Django's auth system, which means you don't have any superusers defined. Would you like to create one now? (yes/no): yes Username (leave blank to use 'root'): hattori E-mail address: hattori@foo.com Password: Password (again): Superuser created successfully. Installing custom SQL ... Installing indexes ... Installed 0 object(s) from 0 fixture(s)

Okay.

run webvirtmgr

# ./manage.py runserver x.x.x.x:8000

when flying webvirtmgr with mnage.py , you don’t need to start apache.
just start python script.

access to the IP with web browser



add the KVM hosts you want to manage with webvirtmgr.









nice !


[ how to start webvirtmgr from apache ]

install

# apt-get install -y libapache2-mod-python

enable python module

# a2enmod python Module python already enabled

copy webvirtmgr directory to apache’s document directory.

cp -r webvirtmgr /var/www/

add the following lines in /etc/apache2/ports.conf

NameVirtualHost *:8000 Listen 8000

make webvirtmgr file under “/etc/apache2/sites-available/” direcotry.

# cat /etc/apache2/sites-available/webvirtmgr <VirtualHost *:8000>    DocumentRoot /var/www/webvirtmgr    ServerAdmin webmaster@dummy-host.example.com    ServerName foo.example.com    SetHandler python-program    PythonHandler django.core.handlers.modpython    SetEnv DJANGO_SETTINGS_MODULE webvirtmgr.settings    PythonOption django.root /var/www/webvirtmgr    PythonDebug On    PythonPath "['/var/www'] + sys.path"    ErrorLog ${APACHE_LOG_DIR}/webvirtmgr-error_log    CustomLog ${APACHE_LOG_DIR}/webvirtmgr-access_log common </VirtualHost>

# a2ensite webvirtmgr Enabling site webvirtmgr. To activate the new configuration, you need to run:  service apache2 reload

reload apache

# service apache2 reload

access to the IP
nnn , erro
r

change an owner from root to www-data.

# chown www-data.www-data /var/www/webvirtmgr/ # chown www-data.www-data /var/www/webvirtmgr/*

try again.