CentOS用にPCを組みました

PC CentOS

構成

CPU Intel Celeron Dual-Core E3200 \4,780
M/B GIGABYTE GA-G31M-ES2L \3,980
メモリ Transcend JetRam DDR2 PC2-6400(800) 1GBx2 \4,880
HDD WD7500AADS (750GB SATA300) \5,480
光学ドライブ LG GH22NS40 \2,980
電源/ケース Antec NSK3480 \9,980
OS CentOS 5.3 -
合計 - \32,080

予算3万くらいで適当にそこそこなスペックで組もうと思った結果がこれ。
ポイントを使用したりなどで実際には3万はなんとかきれてる。

DDR2の値上がりが予想以上で2*2GBを断念。Ubuntuの組んだ時の2倍の値段。
Celeron E3200は結構いいCPUだと思うなぁ安いし。
最安値探しながら買ってたからまあまあな値段で組めたと思う。これで自作3台目

RealtekのNICが認識できない件

GA-G31M-ES2LのオンボードのはRTL 8111C chipみたいなんだけどこれが認識できてない。

下記URLからドライバをダウンロードしてビルドしてインストールして設定すればいいらしい。
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=4&PNid=13&PFid=5&Level=5&Conn=4&DownTypeID=3&GetDown=false#2

まだやってない。以下Readme

<Linux device driver for Realtek Ethernet controllers>

	This is the Linux device driver released for RealTek RTL8168B/8111B, RTL8168C/8111C, RTL8168CP/8111CP, RTL8168D/8111D Gigabit Ethernet controllers with PCI-Express interface.

<Requirements>

	- Kernel source tree (supported Linux kernel 2.6.x and 2.4.x)
	- For linux kernel 2.4.x, this driver supports 2.4.20 and latter.
	- Compiler/binutils for kernel compilation

<Quick install with proper kernel settings>
	Check whether the built-in driver, r8169.ko (or r8169.o for kernel 2.4.x), is installed. 
		# lsmod | grep r8169

	If it is installed, please remove it.
		# rmmod r8169
	note: If the built-in driver cannot removed by rmmod, please edit /etc/modprobe.conf and comment 'alias eth0 r8169'. Then, remmove it again or reboot your computer.

	Unpack the tarball :
		# tar vjxf r8168-8.aaa.bb.tar.bz2

	Change to the directory:
		# cd r8168-8.aaa.bb

	If you are running the target kernel, then you should be able to do :

		# make clean modules	(as root or with sudo)
		# make install
		# depmod -a
		# modprobe r8168

	You can check whether the driver is loaded by using following commands.

		# lsmod | grep r8168
		# ifconfig -a

	If there is a device name, ethX, shown on the monitor, the linux 
	driver is loaded. Then, you can use the following command to activate 
	the ethX.

		# ifconfig ethX up

		,where X=0,1,2,...

<Set the network related information>
	1. Set manually
		a. Set the IP address of your machine.

			# ifconfig ethX "the IP address of your machine" 

		b. Set the IP address of DNS.

		   Insert the following configuration in /etc/resolv.conf.
		
			nameserver "the IP address of DNS"

		c. Set the IP address of gateway.

			# route add default gw "the IP address of gateway"

	2. Set by doing configurations in /etc/sysconfig/network-scripts
	   /ifcfg-ethX for Redhat and Fedora, or /etc/sysconfig/network
	   /ifcfg-ethX for SuSE. There are two examples to set network 
	   configurations.

		a. Fix IP address:
			DEVICE=eth0
			BOOTPROTO=static
			ONBOOT=yes
			TYPE=ethernet
			NETMASK=255.255.255.0
			IPADDR=192.168.1.1
			GATEWAY=192.168.1.254
			BROADCAST=192.168.1.255

		b. DHCP:
			DEVICE=eth0
			BOOTPROTO=dhcp
			ONBOOT=yes	

<Modify the MAC address>
	There are two ways to modify the MAC address of the NIC.
	1. Use ifconfig:

		# ifconfig ethX hw ether YY:YY:YY:YY:YY:YY

	   ,where X is the device number assigned by Linux kernel, and
		  YY:YY:YY:YY:YY:YY is the MAC address assigned by the user.

	2. Use ip:

		# ip link set ethX address YY:YY:YY:YY:YY:YY

	   ,where X is the device number assigned by Linux kernel, and
		  YY:YY:YY:YY:YY:YY is the MAC address assigned by the user.

<Force Link Status>

	1. Force the link status when insert the driver.

	   If the user is in the path ~/r8168, the link status can be forced 
	   to one of the 5 modes as following command.

		# insmod ./src/r8168.ko speed=SPEED_MODE duplex=DUPLEX_MODE autoneg=NWAY_OPTION

		,where
			SPEED_MODE	= 1000	for 1000Mbps
					= 100	for 100Mbps
					= 10	for 10Mbps
			DUPLEX_MODE	= 0	for half-duplex
					= 1	for full-duplex
			NWAY_OPTION	= 0	for auto-negotiation off (true force)
					= 1	for auto-negotiation on (nway force)
		For example:

			# insmod ./src/r8168.ko speed=100 duplex=0 autoneg=1

		will force PHY to operate in 100Mpbs Half-duplex(nway force).

	2. Force the link status by using ethtool.
		a. Insert the driver first.
		b. Make sure that ethtool exists in /sbin.
		c. Force the link status as the following command.

			# ethtool -s ethX speed SPEED_MODE duplex DUPLEX_MODE autoneg NWAY_OPTION

			,where
				SPEED_MODE	= 1000	for 1000Mbps
						= 100	for 100Mbps
						= 10	for 10Mbps
				DUPLEX_MODE	= half	for half-duplex
						= full	for full-duplex
				NWAY_OPTION	= off	for auto-negotiation off (true force)
						= on	for auto-negotiation on (nway force)

		For example:
		
			# ethtool -s eth0 speed 100 duplex full autoneg on

		will force PHY to operate in 100Mpbs Full-duplex(nway force).

<Jumbo Frame>
	Transmitting Jumbo Frames, whose packet size is bigger than 1500 bytes, please change mtu by the following command.

	# ifconfig ethX mtu MTU

	, where X=0,1,2,..., and MTU is configured by user.

	RTL8168B/8111B supports Jumbo Frame size up to 4 kBytes.
	RTL8168C/8111C and RTL8168CP/8111CP support Jumbo Frame size up to 6 kBytes.
	RTL8168D/8111D supports Jumbo Frame size up to 9 kBytes.

暇ができたらやるかな。それか、PCIにNIC差してやればいいんじゃないかと思う。

参考リンク