TECHIES WORLD

For Techs.... Techniques.... Technologies....

Linux

How to install Webvirtmanager in Centos

admin

WebVirtMgr is a libvirt-based Web interface for managing virtual machines. It allows you to create and configure new domains, and adjust a domain's resource allocation. A VNC viewer presents a full graphical console to the guest domain. KVM is currently the only hypervisor supported.

This article explains the detailed steps to install Webvirtmanager in Centos.

Step1: Login to the server as root via ssh.

Step2: Disable SELinux.

How to disable SELinux in Centos7

Step3: Stop firewalld service.

#systemctl stop firewalld

Step4: Disable firewalld service from startup.

#systemctl disable firewalld

Step5: Install packages libvirt-bin and KVM.

#yum -y install kvm libvirt

Step6: Open the file '/etc/sysconfig/libvirtd'.

#vi /etc/sysconfig/libvirtd

Step7: Uncomment the following line and save the file.

LIBVIRTD_ARGS="--listen"

Step8: Open the file '/etc/libvirt/libvirtd.conf'.

#vi /etc/libvirt/libvirtd.conf

Step9: Uncomment the following lines and save the file.

listen_tls = 0

listen_tcp = 1

Step10: Start the libvirtd daemon.

#systemctl start libvirtd

Step11: Enable libvirtd daemon to run during startup.

#systemctl enable libvirtd

Step12: Add users to libvirt and set their passwords using the saslpasswd2 command.

#saslpasswd2 -a libvirt admin

This will ask for the password as the standard input.

To see a list of all accounts the sasldblistusers2 command can be used.

#sasldblistusers2 -f /etc/libvirt/passwd.db

admin@webvirtmgr.net: userPassword

To disable a user's access, use the command saslpasswd2 with the -d

#saslpasswd2 -a libvirt -d admin

Step13: Open access to ports libvirt in iptables firewall.

#iptables -I INPUT -m state --state NEW -m tcp -p tcp --dport 16509 -j ACCEPT

Step14: Verify the libvirt connection.

#virsh -c qemu+tcp://IPADDRESS/system nodeinfo

Where IPADDRESS need to be replaced with the ipaddress of the server.

Here we need to provide the username and password that created earlier as the standard input.

Step15: Install EPEL repository.

#yum -y install epel-release

Step16: Install webvirtmgr and all the other required packages

#yum -y install git python-pip libvirt-python libxml2-python python-websockify supervisor nginx gcc python-devel

Step17: Install Python module numpy.

#pip install numpy

Step18: Clone the Webvirtmanager files.

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

Step19: Change the location to cloned folder.

#cd webvirtmgr

Step20: Install python requirements and setup Django environment

#pip install -r requirements.txt

Step21: Configure the Webvirtmanager.

#python2 manage.py syncdb

#python2 manage.py collectstatic

We can create the Django admin user during this command. This will be the login credentials for Webvirtmanager GUI portal.

To add additional superusers if required, run the following command.

#python2 manage.py createsuperuser

Step22: Exit from the Webvirtmanager folder.

#cd ..

Step23: Create the document root folder.

#mkdir /var/www

Step24: Move webvirtmgr files to document root

#mv webvirtmgr /var/www/

Step25: Create the virtualhost configuration file for Webvirtmanager.

#vi /etc/nginx/conf.d/webvirtmgr.conf

Step26: Update the following lines to the file and save.

server {

listen 80 default_server;

server_name $hostname;

access_log /var/log/nginx/webvirtmgr_access_log;

location /static/ {

root /var/www/webvirtmgr/webvirtmgr; # or /srv instead of /var

expires max;

}

location / {

proxy_pass http://127.0.0.1:8000;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-for $proxy_add_x_forwarded_for;

proxy_set_header Host $host:$server_port;

proxy_set_header X-Forwarded-Proto $scheme;

proxy_connect_timeout 600;

proxy_read_timeout 600;

proxy_send_timeout 600;

client_max_body_size 1024M; # Set higher depending on your needs

}

}

Step27: Open nginx main configuration file.

#vi /etc/nginx/nginx.conf

Step28: Commentout the following lines and save the file.

# server {

# listen 80 default_server;

# server_name localhost;

# root /usr/share/nginx/html;

#

# #charset koi8-r;

#

# #access_log /var/log/nginx/host.access.log main;

#

# # Load configuration files for the default server block.

# include /etc/nginx/default.d/*.conf;

#

# location / {

# }

#

#  # redirect server error pages to the static page /40x.html

# #

# error_page 404 /404.html;

# location = /40x.html {

# }

#

# # redirect server error pages to the static page /50x.html

# #

# error_page 500 502 503 504 /50x.html;

# location = /50x.html {

# }

# }

Step29: Restart nginx service.

#systemctl restart nginx

Step30: Configure nginx to run in startup.

#systemctl enable nginx

Step31: Correct the ownership of webvirtmgr files.

#chown -R nginx:nginx /var/www/webvirtmgr

Step32: Update the following lines at the end of the config file '/etc/supervisord.conf'.

[program:webvirtmgr]

command=/usr/bin/python2 /var/www/webvirtmgr/manage.py run_gunicorn -c /var/www/webvirtmgr/conf/gunicorn.conf.py

directory=/var/www/webvirtmgr

autostart=true

autorestart=true

logfile=/var/log/supervisor/webvirtmgr.log

log_stderr=true

user=nginx

[program:webvirtmgr-console]

command=/usr/bin/python2 /var/www/webvirtmgr/console/webvirtmgr-console

directory=/var/www/webvirtmgr

autostart=true

autorestart=true

stdout_logfile=/var/log/supervisor/webvirtmgr-console.log

redirect_stderr=true

user=nginx

Step33: Restart supervisor daemon.

#systemctl restart supervisord

Step34: Enable supervisor daemon to run in startup.

#systemctl enable supervisord

Step35: Access Webvirtmanager GUI portal in browser.

http://IPADDRESS

Where IPADDRESS need to be replaced with the ipaddress of the server.

We can use the following command to run the Webvirtmanager for debugging purpose if the above url giving any error.

#/usr/bin/python2 manage.py runserver 0:8000

Then we can access the portal using the following url.

http://IPADDRESS:8000

Where IPADDRESS need to be replaced with the ipaddress of the server.

Step36: Add the libvirt connection to the Webvirtmanager GUI.

Add Connection

Here we need to provide the libvirt username and password that created earlier.

Step37: Configure bridge network.

How to configure bridge network Centos7

Step38: Add the bridge network to to the Webvirtmanager GUI.

Networks >> New Network

Step39: Add storage for OS images.

Storages >> New Storage

Step40: Add storage for virtual machines

Storages >> New Storage

Now the system is ready and we can create virtual machines according to the requirements.

That's all…….

Leave a Reply