Linux Bind 9x and Microsoft 2003 Server DNS (No Active Directory)
Migrating from Bind 4.95 to Bind 9.x has a few changes. One change, the client did not want to use Bind 4 or 9 on a MS Windows Server. So, I did a test install of Microsoft 2003 Server DNS.
Migrate from Bind 4.95 to Microsoft DNS Masters Bind 9.x Slaves.pdf
Note:
This solution (work around) is for small business. In my opinion I would not do this method, but it can be done.
Restore Using NTBackup VI3 Images.pdf
Daemons:
Samba has to be installed
NFS has to be installed.
Some pictures are distorted and or whited out text to cover names of servers.
Overview Summary of Extending RAID Arrays in Dell MD1000
If anyone sees errors in my testing please contact me.
support@it-manage.com
Clean up from the command line (CLI)
Clean up for the CLI may show a difference between real storage.
After deleting old images from the MD 1000. I went to the VI3 VC and it showed this much drive space.
The “Linux Console” showed
after 15 mins the VI3 VC corrected itself showing the same as the CLI.
df -h works but does not show the vmfs file system. Use vdf -h to show the file system.
I write scripts from time to time for backup to USB or other drives. This script will help one save older backups in the same folder.
Example:
#!/bin/bash
prefix=$(date +%a-%b%e-%I-%M-%S%p)NameofBak
suffix=tar.gz
filename=$prefix.$suffix
tar -czf $prefix.$suffix /tmp/backups/* (directory path of the folder or file)
mv $filename /Operations (where you want the file moved)
exit 0
The Date commands
Power or just a bad disk?
If at hit ctrl-d to reboot, means the hard drive is corrupt ala power
failure.
use root password to login, then type :
fsck /dev/hda1 -y
fsck /dev/hda2 -y
fsck /dev/hdb1 -y
fsck /dev/hdb2 -y
if at any point you get a message about it being mounted e.g. WARNING!!! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage.
Do you really want to continue (y/n)? no
Answer “n” as shown above, then type umount /dev/hd?? where ?? is
a1,a2,b1,b2 as appropriate
How to get Apache to show the correct log format
Apache Log FormatFig 1.1 Webmin View
Default Log Format: “%h %l %u %t \”%r\” %>s %b \”%{Referer}i\” \”%{User-Agent}i\”" combined
Access log Files
Radio Button to (text box) type combined
Write to
Radio Button to File the /var/log/httpd/nameof file.log
VI httpd.conf (text version)
LogFormat “\”%h %l %u %t \\”%r\\” %>s %b \\”%{Referer}i\\” \\”%{User-Agent}i\\”\” combined”
Put this line in your httpd.conf file usually under /etc/httpd/conf/httpd.conf for Red Hat
Blocking
Postfix can block attachments. There are two ways to do this, Header and Body checks. We have to edit the main.cf file for postfix.
Step 1
add these two lines to the main.cf
header-checks = regexp:/etc/postfix/headers
body_checks = regexp:/etc/postfix/bodycheck
Step 2 Header Checks
vi /etc/postfix/headers
# dxdx Subject
/dxdx/ DISCARD
This will discard and messge with dxdx in the Subject
example,
Nov 28 13:14:17 it-manage postfix/smtpd[23931]: connect from ispmxmta06-srv.windstream.net[166.102.165.167]
Nov 28 13:14:18 it-manage postfix/smtpd[23931]: 3CC178783B0: client=ispmxmta06-srv.windstream.net[166.102.165.167]
Nov 28 13:14:18 it-manage postfix/cleanup[23935]: 3CC178783B0: discard: header Subject: dxdx from ispmxmta06-srv.windstream.net[166.102.165.167]; from= to= proto=SMTP helo=
Nov 28 13:14:18 it-manage postfix/smtpd[23931]: disconnect from ispmxmta06-srv.windstream.net[166.102.165.167]
Backup email is almost common for companies.
To backup all email for a Postfix server IN and OUT do the following.
vi /etc/postfix/main.cf (Red Hat Linux)
go to bottom of page and add
always_bcc = email address
restart postfix.
This will make all mail sender and recipient have email backup.
This will send all email to the address.
Admins can also use Dovecot and others to run a filtering program to put into folders.
***************************************************************************************
Just a few users for backup.
Adding this to the main.cf will have sender and/or recipient backups.
Overview
Servers: 2 Dell 1420SC with 500 Gigs per server SATA Drives (250 Gigs Ea)
Hot Drive: Maxtor IDE USB External Drive
Plan: Complete Virtual Image Backups to an external drive.
Downtime: 1 hour per 60 Gigs if you are using SCSI 320 or USB 2.0
Easy Way:
Lab01: FAT 32 File System.
This is the easiest way to copy the VM images to the external hard drive. Both Windows and Red Hat Enterprise 4 know this file system and will mount it with no issues. The only issue is that FAT32 will only allow 32 Gigs per partition. If security is needed this is not the way to go.
