Day
Light Saving Change in USA -
Summary of changes with links to patches and information. -
Application
Monitoring - Challenges
, best practices and implementation of application monitoring is
discussed.
- Unix
Commands - A
quick reference to commonly used unix commands .
- Solaris
Network Configuartion -
Simplified
: Quick reference to setting up network in Solaris
system
- Performance
Monitoring - iostat , vmstat & netstat -
Introduction to
performance monitoring tools with example and
command syntax.
- crontab
in Unix
- A Quick
Reference to setting up and using cron jobs in unix
.
- Veritas
Volume Manager-1:
- Using vxdiskadm to
add & manage disks & disk groups
.
- Veritas
Volume Manager-2:
- Using vxassist to
create ,configure & manage volumes .
- Admin's
Guide to Solstice Disk Suite:
Complete practical reference including root
mirroring and trouble shooting.
- Securing
Solaris :
- A few suggestions to
make your Solaris system secure from internal and
external intrusion.
-
- Solaris
Installation
- Step by step guide
to Solaris Installation.
- Jumpstart
Server
- Network
installation of Solaris over one or multiple
systems.
- Booting
Process
- Details of Solaris
booting process.
- Booting
Problems in Solaris
- Common booting
related error messages and their possible solution
- DNS
Server
- Setting up DNS
server
- Trouble
Shooting DNS Some
of the configuration and nslookup related errors
explained.
- NIS+
- Server , Clients
setup and commands.
- OpenBoot
Parameters
- Reference table of
important parameters and their values.
- Solaris
Error Messages
- Alphabetical listing
of common Solaris Error Messages and their explanation
- Checking
& Repairing File systems with fsck
fsck
operation ,syntax and explanation of some common
error messages
- Vi
Quick Reference
- vi basics for
reference
- explanations.
-
- Open Directory
- Unix
, Solaris
Administration
- Sun.com
- BigAdmin
-
-
-
- FAQs
- unix
, unix
programming , VI
,Sendmail ,
Bind
- ssh
,BASH
,Security,
Secure
unix programming,
Unix socket
- SCSI
- Solaris
2 ,
Solaris
x86 ,NIS+ FreeBSD
,RedHat
, HPUX
- :
- Unix
- Unix
History and timeline ,
- Overview
of the UNIX
- Microsoft
Windows NT Server 4.0 versus UNIX
- Overview
of Unix Commands
- Unix
for advance Users ,
- Unix
Bourne Shell Guide with Ksh ,
- Korn
Shell
- BASH
reference Guide,
- :
- Solaris
Documentation
- Solaris
7 System Administration Collection
- Solaris
8 System Administrator Collection
- Solaris
9 System Administartion Collection
- Creating
Solaris Packages
- Multibooting
Solaris
- :
- Sun
- Sun
System Handbook
- Sun
Hardware Info.
- :
- Documentation
Home
- Sun
, BSD ,Linux
,Hp,Veritas
- :
- Patches &
Softwares
- Solaris
Patches ,
- Solaris
Freeware ,
- GNU
Software,
- big
brother ,
- webmin
.com ,
- bugzilla.org
- :
- Certification
Info
- Sun
,Red
Hat , HP
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- 2.Making boot device alias
- In case system can not boot from primary
disk and it is needed to make another boot disk to access the data ,
nvalias command is used .
- nvalias command makes the device
alias and assigns an alternate name to a physical disk. Physical
address of target disk is required which can be had by show-disk
command on ok>.
-
- ok> nvalias disk7 /iommu@f,e0000000/sbus@f,e0001000/dma@3,81000/esp@3,80000/sd2,0
- The new aliased disk can be named as
boot disk or can be used for booting by refering its name .
- ok> setenv boot-device disk7
- ok>reset
- or
- ok> boot disk7
-
- 3."Timeout
waiting for ARP/RARP packet"?
- At ok> type printenv and
look for these parameters .
boot-device disk
mfg-switch?
false
diag-switch?
false
- if you see "boot-device net "
or true value for the other two parameter change it to the values above.
- In case you wants to boot from network
make sure your client is properly configured in boot server and network
connections & configuration are proper.
-
- 4."The
file just loaded does not appear to be executable."
- Boot block on the hard disk is corrupted
.Boot the system in single user mode with cdrom and reinstall boot block .
#installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk
/dev/rdsk/c0t3d0s0
- 5."bootblk:
can't find the boot program"
- boot block can not find the boot
programe - ufsboot in Solaris .Either ufsboot is missing or corrupted . In
such cases it can be restored from the cdrom after booting from cdrom &
mounting the hard disk
- # cp /platform/`uname -i`/ufsboot /mnt/platform/`uname
-i`
-
- 6."boot:
cannot open kernel/unix"
- Kernel directory or unix kernel file in
this directory is not found .Probably deleted during fsck or deleted by
mistake .Copy it from the cdrom or restore from the backup tape.
- # cp /platform/`uname -i`/kernel/unix
/mnt/platform/`uname -i`/kernel
-
- 7."Error
reading ELF header."?
- Kernel directory or unix kernel file in
this directory is corrupted.Copy it from the cdrom or restore from the
backup tape.
- # cp /platform/`uname -i`/kernel/unix
/mnt/platform/`uname -i`/kernel
-
- 8."Cannot
open '/etc/path_to_inst'"
- System can not find the /etc/path_to_install
file .It might be missing or corrupted and needs to be rebuild.
- To rebuild this file boot the
system with -ar option :
- ok>boot -ar
- Press enter to select default values for
the questions asked during booting and select yes to rebuild /etc/path_to_install
- The /etc/path_to_inst on your system
does not exist or is empty. Do you want to rebuild this file [n]? y
- system will continue booting after
rebuilding the file.
-
- 9."Can't
stat /dev/rdsk/c0t3d0s0"
- When booted from cdrom and done
fsck the root partition comes out to be fine but on booting from root disk
this error occurs. The device name for / is missing from /dev/dsk directory
and to resolve the issue /dev & /devices directories has to be restored
from root backup tapes .
- 10. Next
Steps
This article covered
some of the common problems encountered at booting time in Solaris .
System administrators spends a significant time in troubleshooting
issues and it pays to spend some time top study about system
administration . There are some good books available on unix and solaris
administration which broaden your understanding of Solaris & unix and
there by helping in your day today work and providing you satisfaction of
work.
Following books available for online buying from Amazon.com . You
should have following two books in your bookshelf for ready
reference if you are involved in Unix system administration .
If you are interested in knowing more about unix its
architecture & internals you can choose the books from following list of
selected best books in this field :
If you already own these books the amazon display panel below shows
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You can show your appreciation by
buying the books for yourself and encouraging the friends to buy
using amazon links below or anywhere at adminschoice.com
or besttechbooks.com . Thanks
for your appreciation in advance.
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by Æleen Frisch