SolusVM is a powerful GUI-based VPS management system which allows you to monitor your VPS status and change basic settings. Blank page in SolusVM generally happens when PHP does not have json module enabled.
Nature of SolusVM blank page error
SolusVM gives a blank page after the 1.20.09 update on CentOS 5 node.
When the PHP version is 5.1.
You can check the PHP version using below command:
# php -v
lighttpd web server serves the requests to Master SolusVM web interface
You can see following error in the error log:
# tail -fn0 /var/log/lighttpd/error.log
2018-12-05 16:41:49: (mod_fastcgi.c.2538) FastCGI-stderr: PHP Fatal error: Call to undefined function json_decode() in /usr/local/solusvm/includes/config.php on line 102
This issue is usually caused as system PHP does not have json module enabled.
How to fix SolusVM blank page error ?
To fix this error, follow this steps below.
1.Firstly, connect to the Master SolusVM server via SSH
2.Then, update the PHP to the packages by symlink PHP to svmstack PHP using the below command.
# mv /usr/bin/php /usr/bin/backup-php
# ln -s /usr/local/svmstack/php/bin/php /usr/bin/php
3.Switch from lighttpd to svmstack-nginx service:
i. Firstly, install repository
# yum install solusvm-release
ii. Then, shutdown lighttpd service
# service lighttpd stop
# chkconfig lighttpd off
iii. Then, install nginx and legacy configuration file for master
# yum install svmstack-nginx svmstack-nginx-legacy-master-config
iv. Next, install nginx and legacy configuration file for slave
# yum install svmstack-nginx svmstack-nginx-legacy-slave-config
v. Finally, start new service
# service svmstack-nginx restart
# service svmstack-fpm restart
If the issue still persists, try to re-install SoulsVM and reboot following below steps.
SolusVM requires the following specification:
i. CentOS 5+ based linux operating system
ii. At least one external IP address
To install, in SSH as root do the following:
$ wget http://soluslabs.com/installers/solusvm/install chmod 755 install ./install
In order to reboot,
a. Login to your SolusVM Control Panel.
b. Scroll down and you can see a "Reboot" option. Click it!
c. It will show a confirmation window. Click on "Yes".