Table of Contents for Index

Anticipatory scheduler (I/O scheduler)

Apache Web Server, high-availability solution for

ApArmor

components of –2nd

creating and managing profiles –2nd

installing and starting –2nd

monitoring status of –2nd

apt-get install drbl command

permissions

updating profiles

aparmor status command

apt command

apt-get command

apt-get purge slapd command

apt-get update command

aptitude search samba command

assigning directory for Clonezilla –2nd

attributes of LDAP objects

authentication

See also Kerberos

for enterprise network installation

of Linux users –2nd

using LDAP for

nsswitch.conf file –2nd

PAM, configuring –2nd

testing client connectivity

authkeys file

B

backing up

cluster configuration –2nd

files, snapshot technology for

balanced trees (b-trees)

barrier option (XFS)

barriers, to avoid reordering in journal file systems

Beginning Ubuntu Server Administration (van Vugt)

bitmaps, inode and block –2nd

blocked process

boot partition, creating

boot problems of LVM logical volumes –2nd

boot process, phases in –2nd

/boot/grub/menu.lst file

C

caching, types of

canonical lookup table, configuring Postfix to use

certificate authority (CA)

cfg_file statements (Nagios)

OpenVPN, configuring –2nd

changing password in LDAP environment

check command (Nagios) –2nd

check_disk plug-in (Nagios), output from –2nd

checking NTP synchronization status –2nd

check_nrpe command (Nagios)

chroot environment

activating from Knopix Rescue CD

listing

troubleshooting and

cibadmin command –2nd

cibadmin -Q command , 2nd , 3rd

cib.xml file –2nd

cleanup daemon

client keys (OpenVPN)

copying

clients

See also Kerberos client

cloning –2nd

configuring for cloning –2nd

NTP, configuring –2nd

Clonezilla imaging server

assigning directory for

cloning clients –2nd

cluster configuration, backing up –2nd

configuring for cloning –2nd

Diskless Remote Boot in Linux

configuring software –2nd

DHCP server, setting up –2nd

installing software –2nd

setting up

cluster resources, configuring –2nd

commands

aptitude search samba

check –2nd

check-nrpe

cibadmin –2nd

cibadmin -Q , 2nd , 3rd

crm_mon -i 1 , 2nd

debugfs utility

help

lsdel

dpkg-reconfigure postfix –2nd

fdisk –2nd

gpart –2nd

ifconfig –2nd

LDAP

dpkg-reconfigure slapd –2nd

ldapsearch , 2nd –3rd

lvdisplay –2nd

lvscan –2nd

mkdir /share

mount

Nagios tool , 2nd –3rd , 4th

netstat -tulpn

nice, adjusting process priority with –2nd

/opt/drbl/sbin/drbl-client-switch –2nd

/opt/drbl/sbin/drblpush -i

/opt/drbl/sbin/select-in-client

pmap , 2nd

smbclient -L localhost

sysctl , 2nd

taskset , 2nd

vmstat -s

CPU performance and , 2nd

memory performance and

xfs_growfs –2nd

common-auth configuration file (PAM)

contents of

modified

Complete Fair Queueing (I/O scheduler)

components

Cyrus IMAPd –2nd

Postfix MTA –2nd

configuration file

storing settings in

configuration files

for Nagios tool

contacts.cfg

contacts group, defining

clients for cloning in Clonezilla imaging server –2nd

hosts and host groups, defining –2nd

services.cfg –2nd

timeperiods_nagios2.cfg –2nd

OpenLDAP

configuring

See also configuration files

Clonezilla imaging server –2nd

cluster resources –2nd

Cyrus IMAPd –2nd

Diskless Remote Boot in Linux software –2nd

DRBD –2nd

Heartbeat –2nd

huge pages –2nd

iSCSI initiator –2nd

iSCSI target –2nd

Kerberos –2nd

Kerberos client

Kerberos server

administrative user account –2nd

database and stash file

generic settings –2nd

KDC settings –2nd

user accounts, adding

verifying KDC is operational –2nd

Nagios server to use NRPE –2nd

Nagios tool

location of configuration files –2nd

master configuration file –2nd

restarting with configuration

NRPE on monitored server –2nd

nsswitch.conf file to find LDAP services –2nd

NTP client –2nd

NTP time server

drift file

log file

security restrictions, aplying –2nd

OpenLDAP

database, adding information to –2nd

verifying configuration with ldapsearch command –2nd

server –2nd

slapd server –2nd

OpenVPN

certificate authority –2nd

client keys –2nd

copying keys to client

Diffie-Hellman parameters –2nd

server keys –2nd

PAM for LDAP authentication –2nd

Postfix MTA

to handle inbound and outbound mail –2nd

to use lookup tables –2nd

Samba servers

aplying permissions to local directory

defining share –2nd

local directory to share, creating

as primary domain controllers –2nd

testing access to share –2nd

user account, creating

workstation accounts, creating

stand-alone NTP time server –2nd

STONITH –2nd

Ubuntu Server as mail server

VPN server

Linux VPN client –2nd

connection to SAN for enterprise network installation –2nd

Windows VPN client

contacts file for Nagios tool, creating

contacts group for Nagios tool, defining

container objects

contents of inodes, showing –2nd

context switches, performance and

copying keys to client (OpenVPN)

CPU

analyzing performance of –2nd

monitoring with top utility –2nd

tuning

adjusting process priority using nice command –2nd

SMP environments –2nd

thread scheduler –2nd

crm_mon -i 1 command , 2nd –3rd

cryptography

certificate authority

key pairs

SSL and

Cyrus IMAPd

for Kerberos server, creating

main configuration file –2nd

managing user mailboxes –2nd

D

database

LDAP

adding information to –2nd

deleting entries from

modifying entries in

Deadline scheduler (I/O scheduler)

debugfs utility

Ext2/Ext3 file system –2nd

default page size, in memory

showing contents of inodes with –2nd

debugreiserfs tool –2nd

default schema files of LDAP –2nd

deleting entries from LDAP database

device-device option (Clonezilla)

device-image option (Clonezilla)

devices for LVM logical volumes –2nd

DHCP server, setting up –2nd

Diffie-Hellman parameters, generating –2nd

digital certificates

E

easy-rsa scripts, generating certificate authority with

editing Samba configuration file

e-mail, receiving

Cyrus IMAPd, using –2nd

procmail, using –2nd

Qpoper, using –2nd

e-mail, sending. See Postfix MTA

enterprise network installation

64-bit version of

authentication handling

completing –2nd

connection to SAN –2nd

file system, choosing –2nd

LVM logical volumes, creating –2nd

post-installation tasks

/etc/modprobe.d/aliases, loading correct kernal modules using

preparing for –2nd

RAID, setting up –2nd

server hardware

software-based RAID, setting up –2nd

starting

entries in LDAP

using

/etc/defaults/slapd file –2nd

/etc/event.d directory

/etc/ha.d/authkeys file

/etc/ha.d/ha.cf file –2nd

/etc/ietd.conf file

/etc/imapd.conf file –2nd

/etc/init.d directory

/etc/init.d/networking script –2nd

/etc/lvm/lvm.conf file

/etc/mke2fs.conf configuration file

contents of

options –2nd

/etc/modprobe.d/arch/i386 file, containing correct bonding options

/etc/nagios2/apache2.conf file, contents of

/etc/nagios2/cgi.cfg file, contents of

/etc/nagios2/commands.cfg file, contents of

/etc/network/interfaces, creating bond() devices using

/etc/pam.d/login file contents

/etc/postfix/main.cf file, parameters

/etc/postfix/master.cf file

listing

predefined fields and default values

/etc/ssl/openssl.cnf file

/etc/xinetd.d/qpoper configuration file

ethtool utility , 2nd

Ext2/Ext3 file system

accessing damaged –2nd

analyzing and repairing

debugfs utility –2nd

dumpe2fs and tune2fs utilities –2nd

files, backing up, snapshot technology for

description of , 2nd

mounting

extents, description of

F

fdisk command –2nd

fdisk -l command

Fibre Channel

file systems

accessing damaged Ext3 –2nd

analyzing Ext2/Ext3 –2nd

choosing at installation –2nd

description of , 2nd

indexing

inodes and directories –2nd

journaling –2nd

mounting –2nd , 3rd

optimizing

Ext2/Ext3 –2nd

ReiserFS –2nd

XFS –2nd

repairing

Ext2/Ext3 –2nd

ReiserFS

superblocks, inode bitmaps, and block bitmaps –2nd

forwarding mail to servers on Internet

filtering incoming e-mail –2nd

fork() system call

free -m command

measuring performance

fsck.reiserfs tool –2nd

G

generic network performance optimization –2nd

getent command

global settings for Postfix, configuring –2nd

gpart command

Grub

boot loader

configuring huge pages with

command-line interface

loading –2nd

reinstalling

hardware interrupts, performance and

Grub menu , 2nd

H

ha.cf file –2nd

hardware initialization

hardware requirements for SAN

hb_gui interface (Heartbeat) –2nd

Heartbeat

configuring ha.cf file –2nd

hb_gui interface –2nd

SAN and

Heimdal Kerberos

help command

help command (debugfs utility)

hierarchical structure of LDAP

high-availability solution for Apache Web Server

high memory

hi performance category (top utility)

Host Detail window (Nagios)

hosts and host groups for Nagios tool, defining –2nd

huge pages, configuring –2nd

I

id performance category (top utility)

identifying problem for troubleshooting –2nd

ietadm command

ifconfig command –2nd

imaging network, schematic overview of

imaging server (Clonezilla)

assigning directory for

clients for cloning, configuring –2nd

cloning client –2nd

from local user to local user, processing –2nd

Diskless Remote Boot in Linux

configuring software –2nd

DHCP server, setting up –2nd

installing software –2nd

setting up

inactive memory

inbound mail

Postfix and

sent over network to local user, processing

indexing, description of

init=/bin/bash tool –2nd

initrd loading

init script (Postfix)

inode bitmaps –2nd

inodes –2nd

installation

See also installing

64-bit version of Ubuntu Server

completing –2nd

LVM logical volumes, creating –2nd

on enterprise network

authentication handling

connection to SAN –2nd

file system, choosing –2nd

preparing for –2nd

RAID, setting up –2nd

server hardware

post-installation tasks

Diskless Remote Boot in Linux software –2nd

software-based RAID, setting up –2nd

starting

installing

See also installation

ApArmor

Cyrus IMAPd

Kerberos –2nd

Nagios tool

NRPE service on Linux servers –2nd

integrating Samba server

in Active Directory

Kerberos authentication, setting up

making Samba member of domain

with LDAP

configuring secure connections

connecting Samba to LDAP –2nd

preparing LDAP –2nd

preparing Samba –2nd

specifying where to put objects

Internet time

inter-process communication, optimizing –2nd

interrupt counter

interruptible hang –2nd

I/O scheduler

optimizing –2nd

iostat utility

disk performance and

-x option , 2nd

ipcs -lm command

IPTraf tool

Additional Ports option

IQN (iSCSI Qualified Name) of target

interface

LAN station monitor

iscsiadm command

iscsiadm -m session command

iSCSI initiator, configuring –2nd

iSCSI Qualified Name (IQN) of target

iSCSI target

iscsitarget resource type

SAN and

J

Journaled File System (JFS)

journaling

modes of –2nd

ReiserFS and

K

kadmin.local command , 2nd

kdc.conf file listing –2nd

KDC (Kerberos Distribution Center) , 2nd –3rd

Kerberos

See also Kerberos server; NTP time server

authentication, setting up for Samba servers

client

installing and configuring –2nd

versions of

Kerberos Distribution Center (KDC) , 2nd –3rd

Kerberos server

configuring

database and stash file

generic settings –2nd

KDC settings –2nd

starting and creating administrative user account –2nd

user accounts, adding

verifying KDC is operational –2nd

kernel panic

kernel

interruptible hang –2nd

noninterruptible hang

parameters, tuning –2nd

symmetric multiprocessing

ldapdelete command (LDAP) , 2nd

kinit command

klist command

Knopix Rescue CD –2nd

krb5.conf file

after installation –2nd

PAM settings

L

ldapadd command (LDAP)

ldap.conf files

LDAP (Lightweight Directory Access Protocol)

See also OpenLDAP

back-end database

Data Interchange Format

default schema files –2nd

hierarchical structure of

integrating Samba with

configuring secure connections

connecting Samba to LDAP –2nd

preparing LDAP –2nd

preparing Samba –2nd

specifying where to put objects

object attributes

schema –2nd

using for authentication

nsswitch.conf file –2nd

PAM, configuring –2nd

testing client connectivity

LDAP Directory

default schema files –2nd

schema file –2nd

using

ldapmodify command , 2nd

ldapasswd command

ldapsearch command , 2nd –3rd

ldap-utils package

ldd command

libpam-ldap package

Lightweight Directory Access Protocol. See LDAP

Linux

open-iscsi solution

servers, installing NRPE service on –2nd

users, authenticating –2nd

VPN client, configuring –2nd

load average for system

load balancing

local certificate authority

local time zone setting

log file, NTP, configuring

logging in with Kerberos client –2nd

logging slapd.conf file –2nd

logical blocks, and file systems

logical partitions for RAID setup

lookup tables, configuring Postfix to use

lost administrator password, dealing with –2nd

low memory

ls command (debugfs utility)

lsdel command (debugfs utility)

lvdisplay command –2nd

LVM logical volumes

boot problems, fixing –2nd

creating on top of software RAID device –2nd

device not activated automatically –2nd

excluding devices for

lvscan command –2nd

M

mail delivery agent (MDA)

configuring Ubuntu Server as

procmail –2nd

mail server

configuring simple –2nd

mail solution

components of –2nd

receiving e-mail

Cyrus IMAPd, using –2nd

procmail, using –2nd

Qpoper, using –2nd

mail transfer agent (MTA)

Postfix, configuring

to handle inbound and outbound mail –2nd

to use lookup tables –2nd

Postfix management tools –2nd

mail user agent (MUA)

management tools, Postfix MTA –2nd

managing

ApArmor profiles –2nd

Nagios tool –2nd

user mailboxes –2nd

XFS file system

man -k xfs utility (XFS)

master boot record (MBR)

in boot process

MDA (mail delivery agent)

inter-process communication, optimizing –2nd

procmail –2nd

memory

analyzing performance of –2nd

configuring huge pages –2nd

optimizing usage of –2nd

memory monitoring with top utility –2nd

write cache, optimizing –2nd

mirroring, and shared storage

MIT Kerberos

mkdir /share command

modifying entries in LDAP database

modules (OpenLDAP)

monitoring

ApArmor status –2nd

DRBD –2nd

monitoring network. See Nagios tool

mount command

mounting

Ext2/Ext3 file system

file systems –2nd

moving processes to other CPU cores

MTA (mail transfer agent)

Postfix, configuring

to handle inbound and outbound mail –2nd

to use lookup tables –2nd

Postfix management tools –2nd

MUA (mail user agent)

multi core environment

benefits of

symmetric multiprocessing kernel

Multidisk utility

multitasking system, performance in

N

Nagios tool

check_disk plug-in, output from –2nd

commands –2nd

configuration files, creating

contacts.cfg

contacts group, defining

hosts and host groups, defining –2nd

services.cfg –2nd

timeperiods_nagios2.cfg –2nd

configuring

location of configuration files –2nd

master configuration file –2nd

Nagios server to use NRPE –2nd

Tactical Monitor Overview window

managing

Host Detail window

Reporting section

Service Detail window

restarting with configuration

user authentication –2nd

netstat tool

options

-tulpn option

network

monitoring performance of –2nd

optimizing performance

generic network

kernel parameters, tuning , 2nd

network card, second, setting up

Samba and NFS –2nd

TCP acknowledgements –2nd

TCP read and write buffers –2nd

TCP Syn queue –2nd

TCP tunables

networking in boot process

network monitoring. See Nagios tool

Network Time Protocol (NTP)

NFS performance optimization

NIC teaming, and installation program

nice command, adjusting process priority with –2nd

ni performance category (top utility)

noatime option (XFS)

noninterruptible hang

Noop scheduler (I/O scheduler)

normal processes, priority of –2nd

notail option (ReiserFS)

nr_pdflush_threads parameter

NRPE

configuring Nagios server to use –2nd

configuring on monitored server –2nd

nss_ldap module (LDAP) , 2nd

nsswitch.conf file, configuring to find LDAP services –2nd

ntp.conf file

synchronization interval, configuring

ntpdate command

ntpd (NTP daemon) –2nd , 3rd –4th

NTP (Network Time Protocol)

ntpq command

ntpq -p command

NTP time server

client, configuring –2nd

customizing

drift file

log file

security restrictions, aplying –2nd

description of –2nd

pulling or pushing time –2nd

stand-alone, configuring –2nd

synchronization status, checking –2nd

ntptrace command

O

open-iscsi solution (Linux)

OpenLDAP

commands

configuration files

database, adding information to –2nd

apt-get purge slapd command

modules

server, configuring

dpkg-reconfigure slapd command –2nd

utilities

verifying configuration with ldapsearch command –2nd

open source SAN. See SAN

openssl command

OpenVPN

certificate authority, configuring –2nd

client keys, creating –2nd

copying keys to client

Diffie-Hellman parameters, generating –2nd

/opt/drbl/sbin/drbl-client-switch command –2nd

server keys, creating –2nd

openvpn command

/opt/drbl/sbin/drblpush -i command

/opt/drbl/sbin/select-in-client command

optimizing file systems

Ext2/Ext3

analyzing and repairing –2nd

mounting

for local user, processing

ReiserFS –2nd

XFS

management of

organization of –2nd

setting properties –2nd

utilities –2nd

optimizing performance. See performance optimization

outbound mail

Postfix and

for remote system user, processing

undeliverable, processing

P

page size, default, in memory

pam_ldap module (LDAP)

PAM (Pluggable Authentication Modules), configuring for LDAP authentication –2nd

parameters for Samba configuration as primary domain controller

Partition Disk screen

Partition Disks interface , 2nd

partitions

boot, creating

logical, for RAID setup

troubleshooting –2nd

passwords

for LDAP administrator

in LDAP environment, changing

lost administrator, dealing with –2nd

performance baselining

performance monitoring

CPU, analyzing performance of –2nd

memory problems, finding –2nd

network –2nd

adjusting process priority with nice command –2nd

storage –2nd

top utility

CPU monitoring with –2nd

memory monitoring with –2nd

output from

process monitoring with –2nd

performance optimization

CPU

SMP environments –2nd

thread scheduler , 2nd

memory

configuring huge pages –2nd

inter-process communication –2nd

write cache –2nd

network

generic

kernel parameters, tuning –2nd

testing changes to settings before aplying –2nd

Samba and NFS –2nd

TCP acknowledgements –2nd

TCP read and write buffers –2nd

TCP tunables –2nd

storage

read requests, tuning

permissions, aplying to local directory for Samba

pickup daemon

PKI (public key infrastructure)

advantages of

for VPN

Pluggable Authentication Modules (PAM), configuring for LDAP authentication –2nd

plug-ins available in Nagios

pmap command –2nd

POP3 server, setting up –2nd

POSIX standard

postdrop command

Postfix MTA

configuring

for handling inbound and outbound mail –2nd

for using lookup tables –2nd

management tools –2nd

post-installation tasks

primary domain controllers, Samba servers as –2nd

problem, identifying –2nd

/proc/drbd file

process files, slapd.conf file

process monitoring with top utility –2nd

process priority, adjusting with nice command –2nd

procmail MDA –2nd

/proc/net/iet/volume file

ps utility

public IP address, and VPN connection

public key infrastructure (PKI)

advantages of

for VPN

public/private key pairs

pulling time –2nd

purging database and slapd configuration

pushing time –2nd

pvdisplay command

pvscan command

Q

Qpoper –2nd

R

RAID

setting up at installation –2nd

software-based

creating at installation –2nd

creating LVM logical volumes on top of –2nd

read requests,

reordering

tuning

realm

real-time processes, priority of

receiving e-mail

Cyrus IMAPd –2nd

recipient_canonical lookup table, configuring Postfix to use

procmail –2nd

Qpoper –2nd

redundancy

See also RAID

in enterprise environment

NIC bonding and

in storage area network

reference clocks

reinstalling Grub

reiserfsck command

ReiserFS file system

description of , 2nd , 3rd –4th

repairing

relocated lookup table, configuring Postfix to use

remounting file system

reordering read and write requests

repairing

Ext2/Ext3 file system

debugfs utility –2nd

dumpe2fs and tune2fs utilities –2nd

Reporting section (Nagios)

ReiserFS file system

Rescue a Broken System option –2nd

restarting Nagios tool with configuration

restoredisk option (Clonezilla)

runlevel scripts, order of –2nd

runnable process

run queue

S

Samba performance optimization –2nd

Samba servers

integrating in Active Directory –2nd

integrating with LDAP

configuring secure connections

connecting Samba to LDAP –2nd

preparing LDAP –2nd

preparing Samba –2nd

specifying where to put objects

aplying permissions to local directory

as primary domain controllers –2nd

setting up

defining share –2nd

local directory to share, creating

cluster configuration, backing up –2nd

testing access to share –2nd

user account, creating

SAN (storage area network)

accessing with iSCSI

cluster resources, configuring –2nd

connection to –2nd

DRBD

monitoring –2nd

setting up –2nd

starting –2nd

hardware requirements for

Heartbeat, configuring –2nd

iSCSI, configuring –2nd

iSCSI initiator, configuring –2nd

software components needed for creating

software for, installing

STONITH, configuring –2nd

savedisk option (Clonezilla)

scheduling process of CPU –2nd

schema files, slapd.conf file

schema of LDAP –2nd

Secure Sockets Layer (SSL) protocol

certificate authority

key pairs

security options

See also authentication

ApArmor

components of –2nd

creating and managing profiles –2nd

installing and starting –2nd

monitoring status of –2nd

security restrictions, aplying to NTP time server –2nd

permissions

updating profiles

cryptography

certificate authority, creating –2nd

certificate authority, need for –2nd

SELinux

sender_canonical lookup table, configuring Postfix to use

Sendmail, Postfix mail server compared to

server certificates, creating –2nd

server hardware for enterprise network installation

server keys (OpenVPN), creating –2nd

servers

See also Samba servers

Clonezilla imaging

assigning directory for

clients for cloning, configuring –2nd

cloning clients –2nd

Diskless Remote Boot in Linux –2nd

setting up

DHCP, setting up –2nd

Kerberos

starting and creating administrative user account –2nd

user accounts, adding

verifying KDC is operational –2nd

mail, configuring , 2nd –3rd

NTP time

client, configuring –2nd

customizing –2nd

description of –2nd

pulling or pushing time –2nd

stand-alone, configuring –2nd

synchronization status, checking –2nd

POP3, setting up –2nd

synchronizing time between –2nd

VPN –2nd

web, and Nagios tool

Service Detail window (Nagios)

services for Nagios tool to monitor, defining –2nd

shared memory –2nd

shared storage. See SAN

shmall setting

shmmax setting

shmmni setting

si performance category (top utility)

slab memory

slabtop utility

slapd.conf file

ACLs –2nd

contents of –2nd

smbclient -L localhost command

logging –2nd

schema and process files

startup parameters –2nd

slapd daemon (OpenLDAP)

slurpd daemon (OpenLDAP)

smbclient command

smbpasswd command , 2nd

smbpasswd -W command

SMP environment. See symmetric multiprocessing (SMP) kernel environment

smtpd process –2nd

snapshot technology for backing up files

software

Diskless Remote Boot in Linux

creating LVM logical volumes on top of –2nd

installing –2nd

RAID

creating at installation –2nd

implementing –2nd

virtualization, creating installation configuration using

SSH VPN

SSL (Secure Sockets Layer) protocol

certificate authority

stand-alone NTP time server, configuring –2nd

key pairs

stack trace, dumping

interruptible hangs –2nd

noninterruptible hangs

starting

DRBD –2nd

startup parameters, slapd.conf file –2nd

stash file for Kerberos server, creating

stat command

stats command

STONITH, configuring –2nd

storage

I/O scheduler

optimizing performance of

optimizing –2nd

monitoring performance of –2nd

read requests, tuning

storage area network. See SAN

st performance category (top utility)

stratums –2nd

superblocks –2nd

swap memory

switching off barriers

symmetric multiprocessing (SMP) kernel environment

synchronization status, NTP, checking –2nd

optimizing –2nd

synchronizing time between servers –2nd

sy performance category (top utility)

sysctl command , 2nd

/sys/kernel/security/aparmor/profiles file

sysvconfig tool

sysvconfig utility

T

Tactical Monitor Overview window (Nagios)

target ID of iSCSI target

taskset command –2nd

TCP acknowledgements –2nd

tcp_keepalive_intvl parameter

tcp_keepalive_time parameter

tcp_max_syn_backlog parameter

TCP read and write buffers –2nd

tcp_synack_retries parameter

TCP Syn queue –2nd

TCP tunables –2nd

testing

access to Samba share –2nd

changes to settings before aplying –2nd

LDAP client connectivity

thread scheduler –2nd

U

Ticket Granting Ticket (TGT)

tickless kernel

time command , 2nd

time periods for Nagios tool, defining –2nd

TLS (Transport Layer Security)

top utility

CPU cycles and

CPU monitoring with –2nd

Last used cpu (SMP) option

memory monitoring with –2nd

output from

process monitoring with –2nd

tools

See also Nagios tool; troubleshooting tools

debugfs –2nd , 3rd –4th , 5th

debugreiserfs –2nd

dumpe2fs –2nd

e2fsck

fsck.reiserfs

management, Postfix MTA –2nd

OpenLDAP

Transport Layer Security (TLS)

tune2fs –2nd

transport lookup table, configuring Postfix to use

trivial-rewrite daemon –2nd

troubleshooting

chroot environment and

file systems

Ext3, accessing damaged –2nd

ReiserFS

Grub

loading manually –2nd

reinstalling

identifying problem –2nd

kernel

interruptible hang –2nd

noninterruptible hang

lost administrator password –2nd

LVM logical volumes

boot problems –2nd

device not activated automatically –2nd

excluding devices for

master boot record

partitions –2nd

troubleshooting tools

init=/bin/bash –2nd

Knopix Rescue CD –2nd

trusted root certificate authority

Rescue a Broken System option –2nd

tun device, adding to VPN server

tune2fs utility –2nd

tuning CPU

adjusting process priority using nice command –2nd

Universal Time Coordinated (UTC)

SMP environments –2nd

thread scheduler –2nd

unconfined command

updating ApArmor profiles

Upstart

user accounts

for Kerberos server, adding

for Samba, creating

user authentication for Nagios tool –2nd

user mailboxes, managing –2nd

us performance category (top utility)

UTC= setting

UTC (Universal Time Coordinated)

utilities. See tools

V

van Vugt, Sander, Beginning Ubuntu Server Administration

/var/lib/ldap/DB_CONFIG file

/var/run/slapd/slapd.args file

Venema, Wietse

versions of Ubuntu Server - compared to 32-bit, 2nd

vgdisplay command

vgscan command

virtualization software, creating installation configuration using

virtual lookup table, configuring Postfix to use

virtual memory

Virtual Private Network server. See VPN server

vmstat -s command

CPU performance and , 2nd

vmstat utility

active and inactive memory information

cpu section

disk performance and –2nd

sample mode , 2nd , 3rd

swap information

VPN

See also VPN server

normal configuration of –2nd

public key infrastructure for

VPN server

See also OpenVPN