Xen1 Setup Process

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This page summarizes how Xen1 was set up in Spring 2009.

Install

  • Installed CentOS 5.3 x64 with Virtualization Support.
    • Partition Scheme
      • 100 MB /boot - Software RAID 1
      • 73 GB root_lvg - Logical Volume Group Software RAID 1
        • 59 GB / (root_lvg-root_lv)
        • 4 GB /var (root_lvg-var_lv)
        • 10 GB swap (root_lvg-swap_lv)
      • 452 GB /xen - Software RAID 1

Kickstart File

# Kickstart file automatically generated by anaconda.

install
cdrom
lang en_US.UTF-8
keyboard us
network --device eth0 --bootproto static --ip 128.153.145.41 --netmask 255.255.255.0 --gateway 128.153.145.1 --nameserver 128.153.0.254,128.153.5.254 --hostname xen1
network --device eth1 --bootproto static --ip 10.0.1.37 --netmask 255.255.255.0 --gateway 128.153.145.1 --nameserver 128.153.0.254,128.153.5.254 --hostname xen1
network --device eth2 --bootproto static --ip 10.0.0.16 --netmask 255.255.255.0 --gateway 128.153.145.1 --nameserver 128.153.0.254,128.153.5.254 --hostname xen1
rootpw --iscrypted ENCRYPTED-PASSWORD-GOES-HERE
firewall --enabled --port=22:tcp
authconfig --enableshadow --enablemd5
selinux --enforcing
timezone --utc America/New_York
bootloader --location=partition --driveorder=sda,sdb,hda,hdb --md5pass=ENCRYPTED-PASSWORD-GOES-HERE
# The following is the partition information you requested
# Note that any partitions you deleted are not expressed
# here so unless you clear all partitions first, this is
# not guaranteed to work
clearpart --linux
part raid.16 --size=100 --ondisk=sda
part raid.19 --size=100 --ondisk=sdb
part raid.20 --size=100 --grow --ondisk=hdb
part raid.18 --size=100 --grow --ondisk=sdb
part raid.17 --size=100 --grow --ondisk=sda
part raid.14 --size=100 --grow --ondisk=hda
raid /boot --fstype ext3 --level=RAID1 --device=md0 raid.16 raid.19
raid pv.22 --fstype "physical volume (LVM)" --level=RAID1 --device=md1 raid.17 raid.18
raid /xen --fstype ext3 --level=RAID1 --device=md2 raid.14 raid.20
volgroup root_lvg --pesize=32768 pv.22
logvol / --fstype ext3 --name=root_lv --vgname=root_lvg --size=61856
logvol swap --fstype swap --name=swap_lv --vgname=root_lvg --size=10240
logvol /var --fstype ext3 --name=var_lv --vgname=root_lvg --size=4096

%packages
@virtualization
@core
@base
bridge-utils
device-mapper-multipath
-gnome-applet-vm
-NetworkManager
-bluez-utils

Configuration

Updated System

  • Configured Yum Priorities & to use our mirror
    • Edited /etc/yum.repos.d/CentOS-Base.repo
# CentOS-Base.repo
#
# This file uses a new mirrorlist system developed by Lance Davis for CentOS.
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#

[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
baseurl=http://mirror.clarkson.edu/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
priority=1

#released updates
[updates]
name=CentOS-$releasever - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
baseurl=http://mirror.clarkson.edu/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
priority=1

#packages used/produced in the build but not released
[addons]
name=CentOS-$releasever - Addons
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=addons
baseurl=http://mirror.clarkson.edu/centos/$releasever/addons/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
priority=1

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
baseurl=http://mirror.clarkson.edu/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
priority=1

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
baseurl=http://mirror.clarkson.edu/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
priority=2

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
baseurl=http://mirror.clarkson.edu/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
priority=2
    • Edited /etc/yum.repos.d/rpmforge.repo
# Name: RPMforge RPM Repository for Red Hat Enterprise 5 - dag
# URL: http://rpmforge.net/
[rpmforge]
name = Red Hat Enterprise $releasever - RPMforge.net - dag
baseurl = http://mirror.clarkson.edu/rpmforge/redhat/el5/en/$basearch/dag
#mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge
#mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge
enabled = 1
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
gpgcheck = 1
priority=15
    • Edited /etc/yum.repos.d/epel.repo
[epel]
name=Extra Packages for Enterprise Linux 5 - $basearch
baseurl=http://mirror.clarkson.edu/epel/5/$basearch
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=epel-5&arch=$basearch
failovermethod=priority
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL
priority=30

[epel-debuginfo]
name=Extra Packages for Enterprise Linux 5 - $basearch - Debug
baseurl=http://mirror.clarkson.edu/epel/5/$basearch/debug
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=epel-debug-5&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL
gpgcheck=1
priority=30

[epel-source]
name=Extra Packages for Enterprise Linux 5 - $basearch - Source
baseurl=http://mirror.clarkson.edu/epel/5/SRPMS
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=epel-source-5&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL
gpgcheck=1
priority=30
    • Edited /etc/yum.repos.d/epel-testing.repo
[epel-testing]
name=Extra Packages for Enterprise Linux 5 - Testing - $basearch
baseurl=http://mirror.clarkson.edu/epel/testing/5/$basearch
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=testing-epel5&arch=$basearch
failovermethod=priority
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL
priority=40

[epel-testing-debuginfo]
name=Extra Packages for Enterprise Linux 5 - Testing - $basearch - Debug
baseurl=http://mirror.clarkson.edu/epel/testing/5/$basearch/debug
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=testing-debug-epel5&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL
gpgcheck=1
priority=40

[epel-testing-source]
name=Extra Packages for Enterprise Linux 5 - Testing - $basearch - Source
baseurl=http://mirror.clarkson.edu/epel/testing/5/SRPMS
#mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=testing-source-epel5&arch=$basearch
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL
gpgcheck=1
priority=40
  • Disabled Yum FastestMirror since using local mirror
    • sed -i 's/enabled=1/enabled=0/g' /etc/yum/pluginconf.d/fastestmirror.conf
  • Installed Yum Priorities (Note: This must be installed prior to installing the packages below.)
    • yum install yum-priorities
  • Configured Yum Priorities to check for obsoletes
    • echo "check_obsoletes=1" >> /etc/yum/pluginconf.d/priorities.conf
  • yum install vim-enhanced gcc emacs-nox screen pwgen dialog
  • yum update

Created User

  • Created user mccarrms
    • /usr/sbin/useradd -m mccarrms
  • Set password for mccarrms
    • passwd mccarrms

Configured Sudo

  • /usr/sbin/visudo
## Sudoers allows particular users to run various commands as
## the root user, without needing the root password.

#User_Alias ADMINS = mccarrms

## Networking
Cmnd_Alias NETWORKING = /sbin/route, /sbin/ifconfig, /bin/ping, /sbin/dhclient, /usr/bin/net, /sbin/iptables, /usr/bin/rfcomm, /usr/bin/wvdial, /sbin/iwconfig, /sbin/mii-tool

## Installation and management of software
Cmnd_Alias SOFTWARE = /bin/rpm, /usr/bin/up2date, /usr/bin/yum

## Services
Cmnd_Alias SERVICES = /sbin/service, /sbin/chkconfig

## Updating the locate database
Cmnd_Alias LOCATE = /usr/sbin/updatedb

## Storage
Cmnd_Alias STORAGE = /sbin/fdisk, /sbin/sfdisk, /sbin/parted, /sbin/partprobe, /bin/mount, /bin/umount

## Delegating permissions
Cmnd_Alias DELEGATING = /usr/sbin/visudo, /bin/chown, /bin/chmod, /bin/chgrp

## Processes
Cmnd_Alias PROCESSES = /bin/nice, /bin/kill, /usr/bin/kill, /usr/bin/killall

## Drivers
Cmnd_Alias DRIVERS = /sbin/modprobe

## Shells
Cmnd_Alias SHELLS = /bin/sh, /bin/bash, /usr/bin/rsh, /bin/dash, /bin/rbash, /bin/su

## Users
Cmnd_Alias USERS = /usr/sbin/useradd, /usr/sbin/userdel, /usr/sbin/userhelper, /usr/sbin/usermod, /usr/sbin/usernetctl

Defaults    requiretty

Defaults    env_reset,tty_tickets,lecture=always,logfile=/var/log/sudo.log
Defaults    env_keep = "COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR \
                        LS_COLORS MAIL PS1 PS2 QTDIR USERNAME \
                        LANG LC_ADDRESS LC_CTYPE LC_COLLATE LC_IDENTIFICATION \
                        LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC \
                        LC_PAPER LC_TELEPHONE LC_TIME LC_ALL LANGUAGE LINGUAS \
                        _XKB_CHARSET XAUTHORITY"

## Allow root to run any commands anywhere
root    ALL=(ALL)       ALL
%wheel  ALL=(ALL)       ALL
%admins ALL=(root)      ALL, !SHELLS
%xenadmins ALL=/usr/sbin/xm

Configured Networks

  • Configured hostname in /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=xen1
GATEWAY=128.153.145.1
  • Verified eth0 configuration for Clarkson Network in /etc/sysconfig/network-scripts/ifcfg-eth0
# Intel Corporation 82541PI Gigabit Ethernet Controller
DEVICE=eth0
BOOTPROTO=static
DHCPCLASS=
HWADDR=00:1B:21:28:C8:56
IPADDR=128.153.145.41
NETMASK=255.255.255.0
ONBOOT=yes
  • Verified eth1 configuration for the Server Room Network in /etc/sysconfig/network-scripts/ifcfg-eth1
# Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper)
DEVICE=eth1
BOOTPROTO=static
DHCPCLASS=
HWADDR=00:E0:81:B5:88:74
IPADDR=10.0.1.37
NETMASK=255.255.255.0
ONBOOT=yes
  • Verified eth2 configuration for the Internal Network in /etc/sysconfig/network-scripts/ifcfg-eth2
# Intel Corporation 80003ES2LAN Gigabit Ethernet Controller (Copper)
DEVICE=eth2
BOOTPROTO=static
DHCPCLASS=
HWADDR=00:E0:81:B5:88:75
IPADDR=10.0.0.16
NETMASK=255.255.255.0
ONBOOT=yes

Configured Additional Xen Bridges

  • Created a network configuration file (/etc/xen/scripts/networks-cslabs)
#!/bin/sh
dir=$(dirname "$0")

"$dir/network-bridge" start vifnum=0 netdev=eth0 bridge=xenbr0
"$dir/network-bridge" start vifnum=1 netdev=eth1 bridge=xenbr1
"$dir/network-bridge" start vifnum=2 netdev=eth2 bridge=xenbr2
  • Made script executable
    • chmod +x /etc/xen/scripts/networks-cslabs
  • Edited /etc/xen/xend-config.sxp
(xend-unix-server yes)

(xend-unix-path /var/lib/xend/xend-socket)

(xend-relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$')

(network-script networks-cslabs)

(vif-script vif-bridge)

(dom0-min-mem 512)

(dom0-cpus 0)

(vncpasswd '')

(keymap 'en-us')

Configured Hosts

  • Edited /etc/hosts
127.0.0.1       localhost.localdomain localhost
128.153.145.41  xen1.cslabs.clarkson.edu xen1.cslabs xen1
10.0.1.37       xen1.sr.cslabs.clarkson.edu xen1.sr.cslabs xen1.sr
10.0.0.16       xen1.int.cslabs.clarkson.edu xen1.int.cslabs xen1.int
  • Edited /etc/hosts.allow
For security purposes, this information has been intentionally left off.
  • Edited /etc/hosts.deny
ALL: ALL

Configured DNS Servers

  • Edited /etc/resolv.conf
search cslabs.clarkson.edu clarkson.edu
nameserver 128.153.145.3
nameserver 128.153.145.4

Disabled IP v6

  • Appended the following to /etc/modprobe.conf
install ipv6 /bin/true
  • Disabled IP v6 firewall
    • /sbin/chkconfig ip6tables off

Configured dom0 memory

  • Due to a networking issue that arose on one of our dom0s (see Bug Report), the memory allocated to the dom0 memory needed to be set.
    • Edited /boot/grub/menu.lst and modified the kernel option
kernel /xen.gz-2.6.18-128.1.10.el5 dom0_mem=512M

Configured Automatic Starting of Xen Images

  • Removed /etc/xen/auto/
rmdir /etc/xen/auto/
  • Created Symbolic Link to /xen/confs
ln -s /xen/confs/ /etc/xen/auto

Configured IPtables

Due to the sensitivity of this material, this config file has been left off; however, the following rules are needed.
  • Restarted iptables
    • /etc/init.d/iptables restart

Configured SSH

  • Edited /etc/ssh/sshd_config
Due to the sensitivity of this material, this config file has been left off.
  • Restarted sshd
    • /etc/init.d/sshd restart

Set Up SSH Login Banner

  • Edited /etc/issue.net
               ___
 __ _____ ___ <  /
 \ \ / -_) _ \/ / 
/_\_\\__/_//_/_/  
                    

Configured Password Requirements

  • Edited /etc/login.defs
MAIL_DIR        /var/spool/mail

PASS_MAX_DAYS   360
PASS_MIN_DAYS   0
PASS_MIN_LEN    8
PASS_WARN_AGE   60

UID_MIN                   500
UID_MAX                 60000

GID_MIN                   500
GID_MAX                 60000

CREATE_HOME     yes

UMASK           077

USERGROUPS_ENAB yes

MD5_CRYPT_ENAB yes

ENCRYPT_METHOD MD5

Added Custom PATH Variables

  • Added the following to /etc/profile
PATH=$PATH:/usr/sbin:/sbin
export PATH

Set Up & Configured NTP

  • Installed NTP
    • yum install ntp
  • Edited /etc/ntp.conf
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery

restrict 127.0.0.1
restrict -6 ::1

restrict tick.clarkson.edu mask 255.255.255.255 nomodify notrap noquery
restrict tock.clarkson.edu mask 255.255.255.255 nomodify notrap noquery

server tick.clarkson.edu
server tock.clarkson.edu

server  127.127.1.0     # local clock
fudge   127.127.1.0 stratum 10

driftfile /var/lib/ntp/drift

keys /etc/ntp/keys
  • Edited /etc/ntp/step-tickers
tick.clarkson.edu
tock.clarkson.edu
  • Configured ntpd to start on boot
    • /sbin/chkconfig --levels 2345 ntpd on
  • Started ntpd
    • /etc/init.d/ntpd start

Configured ntpd to Sync Hardware Clock

  • Edited /etc/sysconfig/ntpd
# Drop root to id 'ntp:ntp' by default.
OPTIONS="-u ntp:ntp -p /var/run/ntpd.pid"

# Set to 'yes' to sync hw clock after successful ntpdate
SYNC_HWCLOCK=yes

# Additional options for ntpdate
NTPDATE_OPTIONS=""

Installed and Configured APCUPSD

This package is used to monitor the UPS which Xen1 is plugged into and is used to shutdown the system in the event of a power failure.

Configured to Power On when Power is Restored

  • Edited the BIOS to have Restore on AC/Power Loss set to Power On.

Installed and configured apcupsd

  • Installed apcupsd
    • yum install apcupsd
  • Edited /etc/apcupsd/apcupsd.conf
## apcupsd.conf v1.1 ##

UPSNAME ups4

UPSCABLE ether

UPSTYPE net
DEVICE 128.153.145.42:3551

LOCKFILE /var/lock

SCRIPTDIR /etc/apcupsd

PWRFAILDIR /etc/apcupsd

NOLOGINDIR /etc

ONBATTERYDELAY 6

BATTERYLEVEL 10

MINUTES 15

TIMEOUT 0

ANNOY 300

ANNOYDELAY 60

NOLOGON disable

KILLDELAY 0

NETSERVER on

NISIP 127.0.0.1

NISPORT 3551

EVENTSFILE /var/log/apcupsd.events

EVENTSFILEMAX 10

UPSCLASS standalone

UPSMODE disable

STATTIME 0

STATFILE /var/log/apcupsd.status

LOGSTATS off

DATATIME 0

SELFTEST 336
  • Configured apcupsd to start on boot
    • /sbin/chkconfig --levels 2345 apcupsd on
  • Started apcupsd
    • /etc/init.d/apcupsd start

Configured Xen Domains to Shutdown on System Shutdown

  • Edited the following lines in /etc/sysconfig/xendomains
XENDOMAINS_SAVE=""

XENDOMAINS_RESTORE=false

Installed Debootstrap

  • yum install debootstrap

Configured Aliases

  • Edited /etc/aliases
#
#  Aliases in this file will NOT be expanded in the header from
#  Mail, but WILL be visible over networks or from /bin/mail.
#
#       >>>>>>>>>>      The program "newaliases" must be run after
#       >> NOTE >>      this file is updated for any changes to
#       >>>>>>>>>>      show through to sendmail.
#

# Basic system aliases -- these MUST be present.
mailer-daemon:  postmaster
postmaster:     logwatch@cslabs.clarkson.edu

# General redirections for pseudo accounts.
bin:            logwatch@cslabs.clarkson.edu
daemon:         logwatch@cslabs.clarkson.edu
adm:            logwatch@cslabs.clarkson.edu
lp:             logwatch@cslabs.clarkson.edu
sync:           logwatch@cslabs.clarkson.edu
shutdown:       logwatch@cslabs.clarkson.edu
halt:           logwatch@cslabs.clarkson.edu
mail:           logwatch@cslabs.clarkson.edu
news:           logwatch@cslabs.clarkson.edu
uucp:           logwatch@cslabs.clarkson.edu
operator:       logwatch@cslabs.clarkson.edu
games:          logwatch@cslabs.clarkson.edu
gopher:         logwatch@cslabs.clarkson.edu
ftp:            logwatch@cslabs.clarkson.edu
nobody:         logwatch@cslabs.clarkson.edu
radiusd:        logwatch@cslabs.clarkson.edu
nut:            logwatch@cslabs.clarkson.edu
dbus:           logwatch@cslabs.clarkson.edu
vcsa:           logwatch@cslabs.clarkson.edu
canna:          logwatch@cslabs.clarkson.edu
wnn:            logwatch@cslabs.clarkson.edu
rpm:            logwatch@cslabs.clarkson.edu
nscd:           logwatch@cslabs.clarkson.edu
pcap:           logwatch@cslabs.clarkson.edu
apache:         logwatch@cslabs.clarkson.edu
webalizer:      logwatch@cslabs.clarkson.edu
dovecot:        logwatch@cslabs.clarkson.edu
fax:            logwatch@cslabs.clarkson.edu
quagga:         logwatch@cslabs.clarkson.edu
radvd:          logwatch@cslabs.clarkson.edu
pvm:            logwatch@cslabs.clarkson.edu
amanda:         logwatch@cslabs.clarkson.edu
privoxy:        logwatch@cslabs.clarkson.edu
ident:          logwatch@cslabs.clarkson.edu
named:          logwatch@cslabs.clarkson.edu
xfs:            logwatch@cslabs.clarkson.edu
gdm:            logwatch@cslabs.clarkson.edu
mailnull:       logwatch@cslabs.clarkson.edu
postgres:       logwatch@cslabs.clarkson.edu
sshd:           logwatch@cslabs.clarkson.edu
smmsp:          logwatch@cslabs.clarkson.edu
postfix:        logwatch@cslabs.clarkson.edu
netdump:        logwatch@cslabs.clarkson.edu
ldap:           logwatch@cslabs.clarkson.edu
squid:          logwatch@cslabs.clarkson.edu
ntp:            logwatch@cslabs.clarkson.edu
mysql:          logwatch@cslabs.clarkson.edu
desktop:        logwatch@cslabs.clarkson.edu
rpcuser:        logwatch@cslabs.clarkson.edu
rpc:            logwatch@cslabs.clarkson.edu
nfsnobody:      logwatch@cslabs.clarkson.edu

ingres:         logwatch@cslabs.clarkson.edu
system:         logwatch@cslabs.clarkson.edu
toor:           logwatch@cslabs.clarkson.edu
manager:        logwatch@cslabs.clarkson.edu
dumper:         logwatch@cslabs.clarkson.edu
abuse:          logwatch@cslabs.clarkson.edu

newsadm:        news
newsadmin:      news
usenet:         news
ftpadm:         ftp
ftpadmin:       ftp
ftp-adm:        ftp
ftp-admin:      ftp
www:            webmaster
webmaster:      logwatch@cslabs.clarkson.edu
noc:            logwatch@cslabs.clarkson.edu
security:       logwatch@cslabs.clarkson.edu
hostmaster:     logwatch@cslabs.clarkson.edu
info:           postmaster
marketing:      postmaster
sales:          postmaster
support:        postmaster


# trap decode to catch security attacks
decode:         logwatch@cslabs.clarkson.edu

# Person who should get roots's mail
root:           logwatch@cslabs.clarkson.edu
  • Updated aliases
    • /usr/bin/newaliases

Disabled CTRL-ALT-DELETE

  • Removed trap entry to prevent accidental reboots
sed -i 's/ca::ctrlaltdel:/#ca::ctrlaltdel:/g' /etc/inittab
  • Made Changes Active
init q

Disabled Various Kernel Modules

  • Added the following to /etc/modprobe.conf
install pppox /bin/true
install bluetooth /bin/true
install sctp /bin/true

Installed & Configured SNMP

  • Installed needed packages
yum install net-snmp ntp
  • Configured SNMP Daemon /etc/snmp/snmpd.conf
rocommunity     <passphrase>  127.0.0.1
rocommunity     <passphrase>  <ipsallowed>
 
syslocation Clarkson University Applied CS Labs
syscontact Matt McCarrell <mccarrms@gmail.com>
disk /
disk /var
disk /boot
disk /xen
exec timeskew /usr/local/sbin/ntp_check
exec uptime /usr/bin/uptime
  • Deployed ntp_check script
    • Copied over /usr/local/sbin/ntp_check from Isengard to /usr/local/sbin/
    • chown root.root /usr/local/sbin/ntp_check
  • Configured SNMP to start at specific run levels
/sbin/chkconfig --levels 2345 snmpd on
  • Started daemon
/etc/init.d/snmpd start

Increased Detail of Logwatch Reports

  • Set detail level to be high
echo "Detail = High" >> /etc/logwatch/conf/logwatch.conf

Disabled Unneeded Services

chkconfig nfs off
/etc/init.d/nfs stop
chkconfig nfslock off
/etc/init.d/nfslock stop
chkconfig rpcgssd off
/etc/init.d/rpcgssd stop
chkconfig rpcidmapd off
/etc/init.d/rpcidmapd stop
chkconfig rpcsvcgssd off
/etc/init.d/rpcsvcgssd stop
chkconfig portmap off
/etc/init.d/portmap stop
chkconfig netfs off
/etc/init.d/netfs stop
chkconfig anacron off
/etc/init.d/anacron stop
chkconfig autofs off
/etc/init.d/autofs stop
chkconfig avahi-daemon off
/etc/init.d/avahi-daemon stop
chkconfig avahi-dnsconfd off
/etc/init.d/avahi-dnsconfd stop
chkconfig bluetooth off
/etc/init.d/bluetooth stop
chkconfig hidd off
/etc/init.d/hidd stop
chkconfig cups off
/etc/init.d/cups stop
chkconfig firstboot off
/etc/init.d/firstboot stop
chkconfig gpm off
/etc/init.d/gpm stop
chkconfig haldaemon off
/etc/init.d/haldaemon stop
chkconfig irda off
/etc/init.d/irda stop
chkconfig kudzu off
/etc/init.d/kudzu stop
chkconfig messagebus off
/etc/init.d/messagebus stop
chkconfig microcode_ctl off
/etc/init.d/microcode_ctl stop
chkconfig pcscd off
/etc/init.d/pcscd stop
chkconfig readahead_early off
/etc/init.d/readahead_early stop
chkconfig readahead_later off
/etc/init.d/readahead_later stop
chkconfig ypbind off
/etc/init.d/ypbind stop