1. DNS & DHCP on CentOS 5.7 4/12/54 อ. ดรัสวิน วงศ์ปรเมษฐ์

2. Infrastructure

3. How to  Set Static IP  /etc/sysconfig/networking/profile s/default/ifcfg-eth0  Install “ DNSMASQ ” packet  Config  /etc/hosts  /etc/resolv.conf  /etc/dnsmasq.conf  Start Service “ DNSMASQ ”

4. Tools & Commands  Tools  Nano – Text Editor  Commands  ifconfig- view / add ip address  nano- run nano editor  rpm- operate packet rpm  cd- go to directory  ls- list file / folder in directory  service- operate service  chkconfig - check service  nslookup- show dns server

5. Tools & Commands  rpm  - i- install  -h, -v- show “#” while operate  -e- erase/uninstall  -nodeps- disable dependent other node  -qa- list all installed packet  other option  | more- viwe more page

6. Tools & Commands  #chkconfig --list  level 0 - halt (Do NOT set initdefault to this) 1 - Single user mode 2 - Multiuser, without NFS (The same as 3, if you do not have networking) 3 - Full multiuser mode 4 - unused 5 - X11 6 - reboot (Do NOT set initdefault to this)

7. How to  Set Static IP  #nano /etc/sysconfig/networking/profile s/default/ifcfg-eth0  # ifdown eth0  # ifup eth0

8. How to  Install “ DNSMASQ ” packet  #rpm -ivh dnsmasq-2.59- 1.el5.rfx.x86_64.rpm  Unistall packet  #rpm -evh --nodeps xxxxxxxx.rpm

9. How to  Config  #nano /etc/hosts

10. How to  Config  #nano /etc/resolv.conf

11. How to  Config  #nano /etc/dnsmasq.conf  uncomment and set the following options expand-hosts domain=example.com dhcp- range=192.168.0.50,192.168.0.150, 12h dhcp- host=11:22:33:44:55:66,foo,192.16 8.0.10

12. How to  Start Service “ DNSMASQ ”  #service dnsmasq start  Check IP on your Client