To resolve this issue, check that the vacation binary file has proper permissions, the executable bit should be set.
# ls -l /home/virtual/FILESYSTEMTEMPLATE/vacation/usr/bin/vacation
-rwxr-xr-x 8 root root 18609 Apr 9 2009 /home/virtual/FILESYSTEMTEMPLATE/vacation/usr/bin/vacation
If the executable bit is not set, change the permissions:
# chmod ugo+x /home/virtual/FILESYSTEMTEMPLATE/vacation/usr/bin/vacation
Reference: http://parallels.com
How to change default 19368 port of control panel interface.
To change default 19638 port it is enough to change it in /etc/ensim/epl.conf file and restart epld service. In other configuration files it will be substituted accordingly.
Note that the sites configuration files are located in /etc/httpd/conf/virtual/ and include “RedirectMatch” directive that contain redirect to 19638 port.
License Invalid in PPCP after the Network Card change
Parallels Pro Control Panel license is tied to a MAC-address. Therefore, when you change your network card, PPCP does not recognize the license as valid anymore.
Resolution
Just rename /etc/appliance/.license/.LIC_file and /etc/appliance/.license/.MLK_file so that the license would be treated as a new one by PPCP:
# mv /etc/appliance/.license/.MLK_file /etc/appliance/.license/.MLK_file.bak
# mv /etc/appliance/.license/.LIC_file /etc/appliance/.license/.LIC_file.bak
Reference: http://parallels.com
Apache crash during high load with Parallels Pro Control Panel
Apache crash on high load with the following error in the error log: “No space left on device:” The problem may be caused by small number of semaphores in system. To increase the number of semaphores please take the following steps:
Login to your PPCPL server as root. Open the /etc/sysctl.conf file using a text editor
Locate the kernel.sem parameter and double current values. If the parameter is not defined in the /etc/sysctl.conf file you can obtain current values by executing the following command:
After obtaining current values, double them and add to the /etc/sysctl.conf file so that the line looks like
kernel.sem = 512 32000 100 512
Please note, values for your installation may varry. Execute sysctl in order the changes to take effect.
Parallels Pro Control Panel for Linux on fresh install of CentOS 5.3 / RHEL 5.3
Prior to installation Parallels Control Panel for Linux on the mentioned operations system please check if the system has rpm user and rpm usergroup:
You need to create this user and appropriate usergroup. To do so please follow next steps:
Log as root to your PPCPL box
Type the following commands:
/usr/sbin/groupadd -g 37 rpm > /dev/null 2>&1
/usr/sbin/useradd -r -d /var/lib/rpm -u 37 -g 37 rpm -s /sbin/nologin > /dev/null 2>&1
After adding the rpm user and rpm usergroup you can proceed with the Parallels Pro Control Panel installation.
Reference : http://parallels.com/
