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.
Migrating to the Latest Version of Parallels Pro Control Panel
The following section provides instructions on migrating to the latest version of Parallels Pro Control Panel.
To migrate to the latest version of Parallels Pro Control Panel:
Log in to the Server Administrator control panel on the Parallels Pro Control Panel server from which you want to migrate data.
Export data from the server:
In the shortcuts section of the Home page, click Export/Import (Tools section).
Perform a Complete backup.
Log in to the Server Administrator control panel on the Parallels Pro Control Panel server.
Import the data to the server to which you want to migrate.
In the shortcuts section of the Home page, click Export/Import (Tools section).
Click Import.
Reference: http://download.pro.parallels.com/
Settings for ifcfg-eth0
The /etc/sysconfig/network-scripts/ifcfg-eth0 file should have the following.
—/etc/sysconfig/network-scripts/ifcfg-eth0 begin file–
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=IP_address_host_server
NETMASK=netmask_value (please check with your service provider)
GATEWAY=ip_address_gateway
—/etc/sysconfig/network-scripts/ifcfg-eth0 end file–
Before you use Parallels Pro Control Panel to perform provisioning or management operations, you must provide the license key information, if you have not provided the information at the time of installation. You receive the license key in the order confirmation email when you buy Parallels Pro Control Panel.
Download Parallels Pro Control Panel 10.3.4 for Linux
Parallels Pro Control Panel for Linux (formerly known as Ensim Pro Linux) is a single-server hosting automation and control panel solution for hosted websites, email, and online applications. It includes comprehensive tools that enable hosting providers to create, control, and deliver a variety of professional-quality hosting plans in minutes.
Reference:
Installation
http://download.pro.parallels.com/10.3.4/docs/linux/Guides/ppcpl-10.3.4-installation-guide.pdf
Upgrade Process:
http://download.pro.parallels.com/10.3.4/docs/linux/Guides/ppcpl-10.3.4-upgrade-guide.pdf
minimum requirements for installing Parallels Pro Control Panel
Operating system: Any of the following operating systems: FC 6 (Fedora™ Core 6), FC 4, CentOS 4.x (Community Enterprise Operating System 4.x), CentOS 5.x, RHEL 5 (Red Hat® Enterprise Linux ES Release 5), RHEL 4 ES, RHEL 4 AS.
Note: FC 4 operating system is supported only with 32-bit architecture, and all other operating systems are supported with both 32-bit and 64-bit architecture.
The system files /etc/hosts, /etc/resolv.conf, /etc/sysconfig/network, and /etc/sysconfig/network-scripts/ifcfg-eth0 on the target server must include the entries as specified below. If the entries are not present, use an editor to modify the files.
/etc/hosts file.
—/etc/hosts begin file–
127.0.0.1 localhost.localdomain localhost
1.2.3.4 myhost.mydomain.com myhost
—/etc/hosts end file–
