ServerBuddies Support Blog

During upgrade, the following message is displayed: check_hostname Error

The file /etc/hosts should contain the host name and IP address of your server. If it does not, use an editor to modify the file.

Example

Where 192.168.1.1 is the IP address of ensim.mydomain.com

Requirements for upgrading Ensim Control Panel

File system EXT3

Important: Quotas may not function as intended if you use other file systems.

Disk space At least 40 GB

Disk space partitioning:

/ 5 GB or more
(assuming minimum disk space of 40 GB)

/usr 5 GB or more

/swap Twice the size of RAM

The size of the partitions can vary in proportion to the size of the disk space.

/var 4 GB or more
/home 20 GB or more (depending on the number of sites you want to host)

Important: Do not create /home/virtual on a separate partition. The Site Administrator dashboard reports incorrect disk usage if the directory is created on a separate partition.

Installation Checklist

You must install the RPM spamassassin-3 or later on the server before you install Ensim Pro Control Panel.

Verify that you have set up the yum repository containing the operating system RPMs, RPM updates, and RPM extras (required only if using yum to obtain and update RPMs).

Set up a yum repository on your local FTP server or on the server on which you are installing Parallels Pro Control Panel. The installer obtains the operating system RPMs, required RPM updates, and RPM extras from the repository.

Ensim Pro Control Panel and Yum version

Ensim Pro is compatible with yum version 2.4 or later. If an earlier version is installed, the installer tries to install/update the installed version; however, to avoid installation failures, it is recommended that you verify the version of yum installed on the server. To verify the yum version, run the following command at the prompt:

List of packages that should not be upgraded on an Ensim Pro for Linux server.

Ensim RPMs you should leave alone: Some of these application RPMs have an tag in the build number (”ensimized RPMs”). This denotes that Parallels Pro Control Panel for Linux has made modifications to the RPM for various reasons such as fixing bugs, adding additional security, or improving performance for hosting domains. The detailed list of these RPMs is shown below.

Reference :http://www.parallels.com/products/pro/