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** Download Slackware 12.2 CD / ISO Images **
-
Slackware version 12.2 has been released and available for download from the official project website. A must-have upgrade for any Slackware user. Download link.
URL to article: http://www.cyberciti.biz/tips/download-slackware-122.htmlThis is how to install your own splash screen for ISOLinux (not the kernel splash, I leave that intact since it really is Slax that is starting, there are tutorials on changing the kernel splash out there). We are going to create a simple image using the gimp, saving it as a .ppm file. then use the ppmtolss16 utility to convert the ppm to lss. If you are not running under Slax when you do this, you may need to find a ppmtolss utility for your distribution. Your new ISOLinux Splash will appear after you burn and boot your remastered CDModules Required
YUM Server Configuration in RHEL5 (Yellow Dog Updater Modified) -for increasing the package integrity.
Step 1: install createrepo.rpm from the DVD for creating repository.
# rpm -ivh createrepo.rpm
Step 2: copy all rpms form the DVD and past over the hard disk share them up in NFS.
#createrepo /path-to-rpms
eg: createrepo /var/ftp/pub
It will take several minutes that depends upon the number of rpms that you have copied from the DVD specified and the configuration of your machine.
Step 3: Touch the following file with the contents specified.
#vi /etc/yum.repos.d/somename.repo
[base]
name=friendly name
baseurl=file:///var/ftp/pub
enabled=1
gpgcheck=0
Step 4: Use the yum server in the same machine because server is the first client of the same service most of the times
the following command is used for install gcc compiler
#yum install gcc
Note: Remember ftp or http service has to be running in the yum server.
Client configuration:
Step 1: Touch the following file with the contents specified in case of ftp server is running in the server machine
#vi /etc/yum.repos.d/somename.repo
[base]
name=friendly name
baseurl=ftp:///192.168.0.254/pub
enabled=1
gpgcheck=0
Step 2:
the following command is used for install gcc compiler
#yum install gcc
these are the commands for removing the service specified
#yum erase gcc
#yum remove gcc
for mail server
#yum install sendmail
To install using Update your installation and install the JVM as described above. Mount the Red Hat Application Stack V.2.0 DVD. Create a new file in Install JBoss Application Server: For the Application Server (which includes an embedded Tomcat), run: After the installation is complete, remove the file you added in yum / DVD:/etc/yum.repos.d/ with the following contents to update directly from the RPMs on the disk:[stacksv2] name=Red Hat App Stack baseurl=file:///path/to/mounted/DVD/Stacks/ enabled=1 yum install jbossas /etc/yum.repos.d/ in Step 3 (or set enabled=0 in that file). Failure to do this will result in yum exiting with an error whenever it is run again without mounting the Red Hat Application Stack V.2.0 DVD.
Troubleshooting in Linux
------------------------
* Boot Related
* File System Related
* User Related
5 1/2 Hours
-----------
TS Session A - 2 1/2h Session B 3h
--------------------- ------------
10 questions 20-25 questions
5 cumpulsary 1h RHCT min70% RHCE min70%
5 choice 1 1/2 Installation sendmail
F.S+RAID+LVM postfix
rpm,nic,xwindows squid
cups,crontab samba
user administration ftp,nfs,nisclient
Troubleshooting - Boot Related
------------------------------
steps to look
-------------
1. bios
2. grub
grub-install /dev/hda <--- in rescue mode
3. /etc/grub.conf <--- if any line is missing - add the line
<--- if grub.conf file is missing - cmd line booting
4. /boot/
vmlinuz |
initrd | <--- if these files are missing
If vmlinuz is missing
---------------------
* mount the nfs share
* cp the kernel-2.6.9-42.EL...rpm to /misc
* cp /misc
* rpm2cpio kernel....rpm > llc
* cpio -ivd <>
* cp vmlinuz-2...EL to the /boot directory
If initrd is missing
--------------------
mkinitrd /boot/initrd-2.6.9-42.EL.ing
or
* mkinitrd /boot/initrd-`uname -r`.img
5. if /sbin/init is missing <--- reinstall SysVinit
6. contineous reboot/shutdown <--- in /etc/inittab
goto single user mode & change the values in /etc/inittab
7. /etc/fstab
To clear the bootloader from mbr
--------------------------------
# dd if=/dev/zero of=/dev/hda bs=446 count=1
To install grub bootloader in mbr
---------------------------------
boot: linux rescue
-/bin/sh-3.00# chroot /mnt/sysimage
sh-3.00# grub-install /dev/hda
sh-3.00# reboot
If kernel panic comes steps to do
---------------------------------
grub> root
grub> kernel /vmlinuz-2.6.9-42.EL.img ro root=LABEL=/
grub> initrd /initrd-2.6.9-42.EL.img
grub> boot
If fstab file entry is changed steps to do
------------------------------------------
1 # mout -o remount,rw /
2 # /bin/vi /etc/fstab
Troubleshooting - User Related
------------------------------
* Password forgot <--- single user mode
* Login failed <--- goto /etc/password in last field /sbin/nologin
* /etc/inittab <--- tty - terminals commented
* /etc/shadow <--- password age set
* (none) login <--- /bin/bash is renamed with some other. single user mode
cd /mnt/sysimage
cd bin
mv bash.xxx bash
DNS Configuration in RHEL 5
Step 1:
set static ipaddress by using these commands
system-config-network
or
ifconfig eth0 192.168.0.254
Step 2:
Install all these following rpms
rpm -ivh bind-9.3.3-7.el5.i386.rpm
rpm -ivh bind-devel-9.3.3-7.el5.i386.rpm
rpm -ivh bind-libbind-devel-9.3.3-7.el5.i386.rpm
rpm -ivh bind-libs-9.3.3-7.el5.i386.rpm
rpm -ivh bind-libbind-devel-9.3.3-7.el5.i386.rpm
rpm -ivh bind-libs-9.3.3-7.el5.i386.rpm
rpm -ivh bind-sdb-9.3.3-7.el5.i386.rpm
rpm -ivh caching-nameserver-9.3.3-7.el5.i386.rpm
Step 3:
cd /var/named/chroot/var/named/
cp localdomain.zone for.prasanna.com
cp named.local rev.prasanna.com
chown root:named for.prasanna.com
chown root:named rev.prasanna.com
Step 4:
Edit the following files and add the respective lines in those
vi /etc/sysconfig/network
hostname=server.prasanna.com
vi /etc/sysconfig/network-scripts/ifcfg-eth0
peerdns=no
vi /etc/resolv.conf
search prasanna.com
nameserver 192.168.0.254
vi /etc/hosts
cd /var/named/chroot/etc
cp named.caching-nameserver.conf named.conf
chown root:named named.conf
vi named.conf
option{
listen-on pot 53{127.0.0.1; 192.168.0.254;};
allow-query{ localhost; 192.168.0.0/24;}
match-clients {localhost; 192.168.0.0/24;};
match-destination {localhost; 192.168.0.0/24;};
vi /etc/named.rfc1912.zones
zone "prasanna.com" IN {
type master;
file "for.prasanna.com";
allow-update {none;};
};
zone "0.168.192.in-addr.arpa" IN {
type master;
file "rev.prasanna.com";
allow-update { none; };
};
Step 5:
Edit for.prasanna.com and rev.prasanna.com in the respective location /var/named/chroot/var/named
in the following way.
$TTL 86400
@ IN SOA server.prasanna.com. root.server.prasanna.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS server.prasanna.com.
server IN A 192.168.0.254
client8 IN A 192.168.0.108
client1 IN A 192.168.0.101
client2 IN A 192.168.0.102
client3 IN A 192.168.0.103
client4 IN A 192.168.0.104
client5 IN A 192.168.0.105
client6 IN A 192.168.0.106
client7 IN A 192.168.0.107
$TTL 86400
@ IN SOA server.prasanna.com. root.server.prasanna.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS server.prasanna.com.
254 IN PTR server.prasanna.com.
101 IN PTR client1.prasanna.com.
102 IN PTR client2.prasanna.com.
103 IN PTR client3.prasanna.com.
104 IN PTR client4.prasanna.com.
105 IN PTR client5.prasanna.com.
106 IN PTR client6.prasanna.com.
107 IN PTR client7.prasanna.com.
108 IN PTR client8.prasanna.com.
Step 6:
service named restart
chkconfig named on
dig -x 192.168.0.254
if you get all the four sections question, answer,additional, authority as 1, you got it. Otherwise, some check the steps properly.
Step 7:
Client side: in station1.prasanna.com
just touch these files with the existing details
vi /etc/resolv.conf
search prasanna.com
nameserver 192.168.0.254
vi /etc/hosts
192.168.0.254 server.prasanna.com
192.168.0.1 station1.prasanna.com
dig -x 192.168.0.254
you should get the same sections like the server, Otherwise check the steps properly.
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