Requirements for Red Hat Enterprise Linux

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Installing Websense Content Gateway > Requirements for Red Hat Enterprise Linux

Requirements for Red Hat Enterprise Linux

Deployment and Installation Center | Web Security Solutions | Version 7.8.x

Web Security Gateway and Web Security Gateway Anywhere, v7.8.x

Required libraries in Red Hat Enterprise Linux 6

Installing on Red Hat Enterprise Linux 6, update 1 and higher

Required libraries in Red Hat Enterprise Linux 6

Required libraries:


apr.i686 apr-util.i686 audit-libs.i686 bzip2-libs.i686 compat-db43.i686 compat-expat1.i686 compat-openldap.i686 compat-readline5.i686 cracklib.i686 cyrus-sasl-lib.i686 db4.i686 expat.i686 ftp.x86_64 gdbm.i686 glibc.i686 keyutils-libs.i686 krb5-libs.i686 libattr.i686 libcap.i686 libcom_err.i686 libcurl.i686 libgcc.i686 libicu.i686 libidn.i686 libselinux.i686 libssh2.i686	libstdc++.i686 libtalloc.i686 libtdb.i686 libuuid.i686 libxml2.i686 nc.x86_64 ncurses-devel.i686 ncurses-libs.i686 nspr.i686 nss.i686 nss-softokn.i686 nss-softokn-freebl.i686 nss-util.i686 openldap.i686 openssl.i686 openssl098e.i686 pam.i686 popt.i686 readline.i686 readline-devel.i686 samba-winbind-clients.i686 sqlite.i686 tcl.x86_64 tcp_wrappers-libs.i686 zlib.i686

During Content Gateway installation, the installer will list missing packages and then exit the installer.

To install the missing packages, the operating system must have a repository of available libraries. The Media repository on the Red Hat Enterprise Linux install DVD is an acceptable source of packages.

After the repository is setup, all of the required dependencies can be automatically resolved by running:

yum install wcg_deps-1-0.noarch.rpm

The above RPM is included in the Content Gateway install tree, at the same level as wcg_install.sh.

Installing on Red Hat Enterprise Linux 6, update 1 and higher

Red Hat Enterprise Linux 6, update 1 introduces biosdevname.

biosdevname is not supported by Content Gateway Version 7.8.x and lower.

What is biosdevname? The Red Hat Enterprise Linux update 6.1 release notes state:

... biosdevname [is an] optional convention for naming network interfaces. biosdevname assigns names to network interfaces based on their physical location. ... biosdevname is disabled by default, except for a limited set of Dell systems.

biosdevname is designed to replace the older, inconsistent "eth#" naming scheme. The new standard will be very helpful when it is fully adopted, however it is not yet fully adopted.

The presence of a single Ethernet device absent the SMIBIOS Slot # and biosdevname field causes the Red Hat Enterprise Linux 6.1 installer and 'udev' to fall back to the preferred eth# device naming for all interfaces.


	Important To ensure interface name consistency among hardware platforms and Red Hat Enterprise Linux 6.0, 6.1, and higher, Content Gateway Version 7.8.x requires "eth#" names. If any non-"eth#" names exist, the Content Gateway installer exits and provides a link to instructions for modifying system startup files.

Upgrading from Red Hat Enterprise Linux 6.0 to 6.1 and higher poses no risk. There was no biosdevname support in Update 6.0 and device names are not altered by the upgrade to 6.1 or higher.

Disabling biosdevname

If while installing Content Gateway the installer finds non-eth# interface names, the installer quits and provides a link to instructions for modifying system startup files.

There are 2 ways to disable biosdevname:

1.

During operating system installation.

2.

Post-operating system installation through modification of several system files and other activities.

The easiest way to disable biosdevname is to do it during operating system installation. This is the recommend method.

Disabling biosdevname during operating system installation:

When the installer starts, press [TAB] and alter the boot line to add "biosdevname=0" as follows:

Proceed through the rest of the installer as usual.

Disabling biosdevname after operating system installation:

Log on to the operating system and verify that non-eth# names are present.

If only "eth#" and "lo" names are present, you are done. No other actions are required.

If there are names like "emb#" or "p#p#" perform the following steps.

1.

Log in as root.

2.

cd /etc/sysconfig/network-scripts

3.

Rename all "ifcfg-<ifname>" files except "ifcfg-lo" so that they are named "ifcfg-eth#".

a.

Start by renaming "ifcfg-em1" to "ifcfg-eth0" and continue with the rest of the "ifcfg-em#" files.

b.

When the above are done, rename the "ifcfg-p#p#" files.

If there are multiple "ifcfg-p#p1" interfaces, rename all of them in the order of the lowest "ifcfg-p#" first. For example, if the initial set of interfaces presented by "`ifconfig -a" is:

em1 em2 em3 em4 p1p1 p1p2 p2p1 p2p2

c.

Make the "ifcfg-eth#" files linear so that if you have 6 interfaces you have eth0 through eth5.

4.

Edit all the ifcfg-eth# files.

a.

Update the DEVICE= sections to refer to the new name: "eth#"

b.

Update the NAME= sections to refer to the new name: "System eth#"

5.

Remove the old udev device mapping file if it exists:

rm -f /etc/udev/rules.d/70-persistent-net.rules

6.

Modify the "grub.conf" file to disable biosdevname for the kernel you boot.

a.

Edit /boot/grub/grub.conf

b.

Add the following to the end of your "kernel /vmlinuz" line:

7.

8.

Reconfigure the interfaces as required.

Installer gives NetworkManager or avahi-daemon error

When Red Hat Enterprise Linux 6 is installed with a GUI, the Content Gateway installer recognizes systems running NetworkManager or avahi-daemon processes and emits an error similar to:

Error: The avahi-daemon service is enabled on this system and must be disabled before Websense Content Gateway v7.7 can be installed.

Please disable the avahi-daemon service with the following commands and restart the Websense Content Gateway installation.

chkconfig --levels 2345 avahi-daemon off

service avahi-daemon stop


	Warning Content Gateway is supported on Red Hat Enterprise Linux 6, Basic Server (no GUI) and is not supported on RHEL 6 with a GUI.

To continue, the conflicting NetworkManager and avahi-daemon processes must be stopped.

1.

To disable the avahi-daemon service:

chkconfig --levels 2345 avahi-daemon off

service avahi-daemon stop

2.

To restart the installer:

./wch_install.sh

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