Skenario:
Internet:192.168.1.1 — eth1:192.168.1.5:CentOS Squid:eth0:192.168.0.254 — LAN
I.Setting Statik IP Address,DNS,Hostname:
Using wizard:
# system-config-network-tui
or manual setup IP Address:
-Setting IP Address Statik eth0
# vi /etc/sysconfig/network-scripts/ifcfg-eth0
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-Install paket DHCP server
# yum -y install dhcp
-Backup File Original Konfigurasi DHCP
# mv /etc/dhcpd.conf /etc/dhcpd.conf.asli
-File contoh default konfigurasi dhcp ada di /usr/share/doc/dhcp-versidhcp/dhcpd.conf.sample
Copy file terserbut ke /etc/dhcpd.conf untuk diedit :
# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.conf
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Berikut cLi untuk melihat daftar running services di CentOS/RedHat :
– Service command,melihat daftar running services
# service --status-all
# service --status-all | grep ntpd
# service --status-all | less
Contoh command untuk mengetahui status apache (httpd) service:
# service httpd status
– List all known services (configured via SysV)
# chkconfig --list
– List service and their open ports
# netstat -tulpn
– Turn on / off service
# ntsysv
ntsysv adalah interface sederhana untuk setting runlevel services dimana biasanya bisa disetting dari chkconfig.
Contoh command chkconfig:
# chkconfig httpd off
# chkconfig ntpd on
# find / -name ‘squid’ -type d
# find / -name squid
# find / -iname squid.conf
Note:
the fist parameter “/” is where to look in this case “/” the entire system.
-name could be -iname to ignore case also -type is not mandatory
For more options
# man find
References
http://rud.web.id/baca/artikel/148/cara-mudah-cek-processor-memory-harddisk-vga-dll
http://www.computerbob.com/guests/how_to_get_system_info_in_linux.php
Untuk mengetahui system information di Linux dapat menggunakan beberapa command melalui terminal/konsol, (harus menggunakan user account root):
# cat /proc/cpuinfo | Informasi Processor
# cat /proc/meminfo | Informasi Memory
# lshw | Untuk list perangkat keras
# fdisk -l | Informasi Harddisk dan partisi
# lspci | Informasi lengkap jenis Controller, BUS, PCI, dll
# lspci -nn | Informasi singkat jenis Controller, BUS, PCI, dll
# lspci | grep VGA | Informasi VGA / Display Card
# lspci | grep Eth | Informasi Ethernet Card / NIC / LAN Card
# uname -a | Informasi Kernel dan jenis Processor
Perintah Linux yang lebih lengkap dapat dilihat disini