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
Setting up the Linux terminal to use proxy servers
If you are running proxy at IP 192.168.1.1 with the proxy port as 3128 and wish to use wget, lynx and other utilities from a shell prompt then export the following variables on the command line.
export http_proxy=http://192.168.1.1:3128/
export ftp_proxy=http://192.168.1.1:3128/
export ftps_proxy=http://192.168.1.1:3128/
export https_proxy=http://192.168.1.1:3128/
Now your will be able to use the update commands from the command line.
Optimizing the EXT3 file system on Linux
There are some things you can do to give ext3 a boost when you just want speed.
Mount Options noatime,nodiratime
noatime
Do not update inode access times on this file system (e.g, for faster access on the news spool to speed up news servers).
nodiratime
Do not update directory inode access times on this filesystem.
This is one of the quickest and easiest performance gains. This mount option tells the system not to update inode access times. This is a good option for web servers, news servers or other uses with high access file systems
Also from the man pages.
commit=nrsec
Sync all data and metadata every nrsec seconds. The default value is 5 seconds. Zero means default.
#
proc /proc proc defaults 0 0
# / was on /dev/sda1 during installation
UUID=164be035-6571-43b4-820e-cef57b74f1dc / ext3 relatime,noatime,nodiratime,errors=remount-ro 0 1
sysreport and sosreport in Red Hat Enterprise Linux
Before Red Hat Enterprise Linux 4.5, we had “sysreport”. The “sosreport” command is a tool that collects information about a Red Hat Enterprise Linux system, such as what kernel is running, what drivers are loaded, and various configuration files for common services. It also does some simple diagnostics against known problematic patterns.
To run “sosreport”, the “sos” package must be installed. The package should be installed by default, bu if the package is not installed, follow the steps below:
Red Hat Enterprise Linux 4
If the system is registered with Red Hat Network (RHN), “sos” can be installed using the up2date command:
Red Hat Enterprise Linux 5 and later
If the system is registered with RHN, use the yum command:
“sosreport” will generate a compressed a bz2 file under /tmp.
Linux Password Security with pam_cracklib
Standard Unix reusable passwords are not really a good authentication system. In an effort to address this shortcoming, the PAM module pam_cracklib was developed for Linux systems.
Enabling pam_cracklib
The pam_cracklib module is enabled via the system’s standard PAM configuration interface. On Debian systems, this is the /etc/pam.d/common-password file (but it’s /etc/pam.d/system-auth on RedHat-derived systems.
The typical configuration looks something like this:
For debian:
password required pam_cracklib.so retry=3 minlen=12 difok=4
password required pam_unix.so md5 remember=12 use_authtok
For Redhat:
To setup these password restrictions, edit the /etc/pam.d/system-auth file and add/change the following pam_cracklib arguments highlighted in blue:
auth required /lib/security/$ISA/pam_env.so
auth sufficient /lib/security/$ISA/pam_unix.so likeauth nullok
auth required /lib/security/$ISA/pam_deny.so
account required /lib/security/$ISA/pam_unix.so
account sufficient /lib/security/$ISA/pam_succeed_if.so uid < 100 quiet
account required /lib/security/$ISA/pam_permit.so
password requisite /lib/security/$ISA/pam_cracklib.so retry=3 minlen=8 lcredit=-1 ucredit=-1 dcredit=-1 ocredit=-1
password sufficient /lib/security/$ISA/pam_unix.so nullok use_authtok md5 shadow
password required /lib/security/$ISA/pam_deny.so
session required /lib/security/$ISA/pam_limits.so
session required /lib/security/$ISA/pam_unix.so
