Symptoms

Increasing PVPS_Panel resource limit from 0 to 1 gives a blank page with no errors.

At the same time the following exception is registered in /var/log/pa/core.log:

Command: bash
Code: 255
stdout:
Fatal error: Call to undefined function curl_init() in /usr/local/aps/584a7be1-4bd0-4c3f-b210-1e5333837e1c/vendors/php-runtime/aps/2/apsc.php on line 292

Cause

The VPS includes a custom PHP bundle, configured by customer, and it doesn't have curl module carried along.

Resolution

Two alternative solutions are possible:

  1. Fall back to the default PHP:

    root@server-1010101-1:/usr/local/aps# ls -alh /etc/alternatives/php
lrwxrwxrwx 1 root root 15 Dec  3 16:50 /etc/alternatives/php -> /usr/bin/php5.6

root@server-1010101-1:/usr/local/aps# ls -alh /usr/bin/php*
lrwxrwxrwx 1 root root   21 Dec  2 12:16 /usr/bin/php -> /etc/alternatives/php
-rwxr-xr-x 1 root root 8.7M Oct  3 15:15 /usr/bin/php5
-rwxr-xr-x 1 root root 4.2M Nov 14 05:05 /usr/bin/php5.6

root@server-1010101-1:/usr/local/aps# unlink /etc/alternatives/php
root@server-1010101-1:/usr/local/aps# ln -s /usr/bin/php5 /etc/alternatives/php
root@server-1010101-1:/usr/local/aps# ls -alh /etc/alternatives/php
lrwxrwxrwx 1 root root 15 Dec  3 16:50 /etc/alternatives/php -> /usr/bin/php5

    Increase the resource limit, wait for the Panel provisioning task to complete and revert the changes back.

  2. Install the curl module for the PHP version currently used:

    • For Debian-based VEs:

      root@server-1010101-1:/usr/local/aps# apt-get install php5.6-curl

    • For RHEL-based VEs:

      root@server-1010101-1:/usr/local/aps# yum install php5.6-curl

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