CentOS 5 :: CentOS 5 Home Server Power Consumtion? (features, Kernel Versions Etc.)?
Feb 28, 2010
I built a home server (NAS/WWW/SSH/media server etc) and chose CentOS 5 as the OS (stability, easy of configuration).I was just about to start tuning the power consumption when I realised that the kernel CentOS uses is so "old" that it does not support the latest reduced power consumption enhancements that Linux has achieved in big strides in the recent past (we are probably still talking 6-12+ months ago e.g. tickless kernel)..
So my questions; 1) I know CentOS was maybe not meant for home servers (certainly its not its primary purpose), but if it is, any ideas of what kind of power consumption it takes (I know its relative) and if there are particular power consumptions that are worthwhile?
2) Do you recommend me compiling my own 2.6.21+ kernel from kernel.org or am I just likely to have compatibility issues (I really did not want to do that) or when is CentOS 5.4 supposed to have a newer 2.6.21+ version kernel?
Was it wrong of me in principle to choose CentOS for a home server when I am power conscious? (I don't have a low-power VIA processor either but a P4 so I am really just hoping to make do with software changes).
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Feb 9, 2011
I am in the process of building a new server on an Asus P5QPL-AM motherboard and an Intel E8600 processor.explain to me the difference between the two versions and what would you recommend.Also, is there any advantage of SATA over IDE hard drives?
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Apr 20, 2011
I am running my web and game server on ubuntu 8.04 lts and am considering in reinstalling a new OS. I would like to try another different OS(most probably CentOS or Debian and I saw alot of good comments about them). I'm not sure what version I am going to install. I searched on websites of companies that rents dedicated servers and noticed that they mainly use Debian 4 or 5 and CentOS 5 or 4.7. I would like you to tell me which versions do you prefer for CentOS and Debian servers.
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Mar 30, 2011
Is it possible to list/find/compare the program versions on a Centos system, against Redhat/Centos Errata/Security/Bug lists? Sort of looking for a way to make sure that all the packages on a system are ok, and not a security risk-- Without having to update every package. A pseudo code, in my mind is:
[Code]...
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May 21, 2009
I have centos 5.3 workin on mini itx atom 330. i have some problem with the network when i use Samba. when i move big files the network goes down. i wanna to install the new kernel on my centos to try to fix the network problem with the new drivers includes on the new kernel.
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Sep 19, 2009
I had a power failure the other day and my server shutdown abruptly. After bringing the server up I noticed that the /var partition came up as read only. I was not able to edit the crontab, not able to write to files within /var/log/ and do other write operations within /var.
I did a mount and it showed that /var was mounted read and write but when trying to run certain operations the system was still saying that it was read only.
[Code]...
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Jul 13, 2009
I have built a Centos 5.3 server for a friend of mine that is being used as a NAS server. The server has 4 1TB drives in a RAID 5 configuration and a dedicated non raid system drive for the OS. My friend isnt very Linux literate so I need this bow to be relatively simple. I have worked most of it out but have a question with regards to remote reboot.
I need to be able to shut this device down through the power switch without human intervention (at the moment when the power switch is pushed the server asks to confirm shutdown) the server wont have a Monitor connected so this isn't practical. Is it possible to use the power switch to do an clean, immediate shutdown?
The other option is shutdown through a web page is this something that has been done before? I know he can do it through terminal by issuing a shutdown now command but as I said this guy wants something simple. I don't really want to explain everytime he needs to shut the Server down how to do it if he can just do it via a website or even with the power button.
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Oct 29, 2010
Before to describe my problem I want to say that I searched a lot on the internet and I think I tried all the solutions provided by other users to similar problems.
I've got an IBM xSeries 346 server running CentOS 5.5 with all updates applied with yum.
The video card is an ATI Radeon (lspci says: 01:06.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE]).
Everything worked fine until a bad day where there was an environmental power failure and the server crashed.
I turned it on, I manually check the file system, some files went lost and after the reboot the X server didn't start.
After the first boot I had problem with /etc/rc.d/rc.sysinit, sbin/multipath.static and /dev/cpu/microcode, I solved them and now the message it shows is:
"Failed to start the X server (your graphical interface) It is likely that it is not set up correctly. Would you like to view the X server output to diagnose the problem?"
I choose OK and it appears an empty log, if I go in /var/log/gdm and I do an ls -al:
total 0
-rw-r--r-- 1 root root 0 Oct 28 04:44 :0.log.4
-rw-r--r-- 1 root root 0 Oct 28 04:44 :0.log.3
-rw-r--r-- 1 root root 0 Oct 29 04:52 :0.log.2
-rw-r--r-- 1 root root 0 Oct 29 04:52 :0.log.1
-rw-r--r-- 1 root root 0 Oct 29 04:52 :0.log
So a lot of empty log files.
I press enter on the OK that appears at the bottom of the screen and it says: Would you like to try to configure the X server?
I choose Yes, I enter the root password and appears the following messages:
Couldn't start X server on card 0
Couldn't start X server with old config, trying with a fresh configuration
Then another messages:
Trying to restart the X server, I press enter on OK and it loops the initial message ("Failed to start the X server...)
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Jun 21, 2010
what is the good features in linux centOS
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Feb 10, 2010
I am trying to get a understanding of how to install a RAID 1 on a Dell Power Edge server.
HARDWARE:
2 - 16gig SCSI dives
1 - 36gig SCSI drive
I have read through some documentation found online and at centos.org but still having problems.
get this accomplished keeping in mind this is my first go at using RAID system.
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Nov 21, 2010
I have problem with onboard ATI ES1000. Server details:
Supermicro X7SBI, Q6600, 8G ram. Centos 5.5 minimal installation, without X.
Problem is that with all kernel-xen x86_64 from current kernel-xen-2.6.18-194.26.1.el5.x86_64 back to kernel-xen-2.6.18-128.el5.x86_64 after kernel boots monitor goes blank and says "no video, going to power save".
Google finds similar problems and sugestions was to add "nomodeset". With this option monitor also blanks after kernel boot, but says "out of range". Other options to modify xorg.conf does not apply, becouse there is no X installed.
I try with multiple monitors, without success. This happens only with 64bit kernel-xen. All other 32 and 64 bit kernels and 32bit kernel-xen works fine, video is ok. This happens to 6 servers, all are same hardware, used as cluster. Installation with "linix text" allways is fine, video disappears after first reboot when standart kernel is booted. I also tryed with almost all possible "vga=xxxx" kernel options and none of them works.
What else to try?
# lspci
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Oct 8, 2009
I need to find a way to upgrade OpenSSH support to something more than the patched 4.3p2 which comes included in CentOS 5.3. Specifically I want to be able to use the Chroot functionality which was added in OpenSSH 4.8.
# The following directives force ben_files to become chrooted
# and only have sftp available. No other chroot setup is required.
Match user ben_files
[code]....
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Jun 7, 2011
I have a small problem on my Compaq Evo Centos 5.4 web server. The web server runs just fine, the problem is it fails to restart from a power outage. Simple edit the BIOS. No! For a reason I can't think of the keyboard stops working after a few key strokes following the F10 to enter BIOS setup. Then its a power cycle. If left to BOOT the PC and keyboard are fine. After hearing about viruses which get to the BIOS I will ask can NIX get that far so I can adjust the Power ON?
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Nov 19, 2010
what new features in RHEL6 comparing to its older versions??
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May 15, 2010
I just installed 5.4 on a home machine and I would like to get a UPS that will auto shutdown the server if the power goes out. Here an inexpensive tripplite from Costco. [URL] I only need it to shut down the 1 centos 5.4 machine if the power fails. Tripplite has linux software now that will shutdown machines. [URL]
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Feb 12, 2009
I have one server at home, connected through a router that gives me a static IP:192.168.1.2 - My PC192.168.1.3 - CentOS serverI enabled the port 80 into router forwarding system and I can connect properly to CentOS server, using the IP my internet provider gives me. My router automatically forwards a changed IP to my dyndns.com account so I can also access the server through a domain name (I pay to have it linked to one of my domains).My next step is to configure the mail server (dovecot) , so I can send emails from my local server(192.168.1.3).I was wondering if anyone has any tutorial links or tips to have the mail server configured through a home internet provider + home router.
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Aug 25, 2009
I have a home DNS server that has been working for some time today. Today I restarted to restarted it to clear the cache on it and now it refuses to answer and requests. Named starts fine with no errors. Here is named config file that worked for about 2 weeks fine and now doesn't want to work.
options {
directory "/etc";
pid-file "/var/run/named/named.pid";
forwarders {
192.168.1.10;
};
forward only;
};
zone "." {
type hint;
file "/etc/db.cache";
};
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Aug 31, 2009
OS: CentOS 5.3
vsftpd ver: vsftpd-2.0.5-12.el5_3.1
I installed vsftpd server in one of my servers using "yum install vsftpd" command. NFS server is running in the other server and mounted as "/data" in this FTP server. root in FTP server has also root authority in NFS server. All the files and sub-folders under "/data" in FTP server have 755 or 766 mode. Even I modified vsftpd setting to allow root login.
When I login as root to FTP server with FileZilla client, I can see all the file list in root home directory and move to /data directory. I can download any file in a local HDD but I can not download any file in /data directory.
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Mar 25, 2011
I got below Code from Someone so that I configure Squid using which I can block websites.
#!/bin/sh
# squid server IP
SQUID_SERVER="192.168.0.2"
# Interface connected to Internet
INTERNET="eth0"
[Code]....
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Jun 11, 2011
I am wondering what is the fastest way for me to move files from a VPS running CentOS to my home PC? I do not have FTP or anything like that installed. Are there commands I can enter in putty, for example, that will simply download an entire directory on the VPS onto my home PC?
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Mar 22, 2009
I am trying to set up a web based FTP site on my home server, I got ftp up and running and I can log into it using an ftp client but I want to set it up so I can get to it from the web. I put the directory in the www/html folder but that does not seem to help it
If anyone could point me in the right direction that would be great. I also need to let anonymous users get access to it.
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Aug 17, 2010
I would like to remove openldap from my Centos home-server..
Centos offers me:
Quote:
Removing:
openldap i386 2.3.43-12.el5_5.2 installed 592 k
openldap x86_64 2.3.43-12.el5_5.2 installed 598 k
[Code]...
..obviously I'll not remove openldap by this operation.. but my question is: there is another way to remove a single package with yum without "consequences"?
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Jun 21, 2010
Im trying to make a webserver at home. I have a static IP Address of my ISP (o2) I have built a server ( 2.8 p4HT, 2GB Ram, 500GB HDD) Just to test... But, i dont know what to do in the IP Address settings for the IPv4 ( I think thats what it is) Do i put my static IP address in my ISP gave me, or the local IP of the server ( Wich is 192.168.1.72) Im realy confused. Ive tried everything i can think of, Reinstalled the os about 40 times up to now...
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May 26, 2010
I noticed in Fedora that in Authenticate Configs ->Advanced, that there is an option to "Create home directories on the first login".I'd like to know if its possible to enable that through a text config file on a CentOS box that has ldap authentication enabled. Right now it's complaining that the home folder does not exist upon loggin with an ldap account.
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Feb 25, 2009
I have a CentOS box set up as a small home server right now. It is running a Apache Server. A SVN server and is going be a file server for all my friends. The problem is that it I need to add more SATA ports. RAID is not a big deal to me so the card can be a simple add in card. I am limited to PCI because the board does not have any pci expres slots. I am also interested in what hard drives that card would work with. I am hoping to keep them to 500 Gigs min. The motherboard has two built in SATA prots but I don't use them have had bad luck with them in the past
System:
AMD Athlon 64 3400+ cpu
MSI K8N Neo Series motherboard
3 IDE Hard Drives
1 CD Drive
CentOS 5
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Jun 26, 2011
How to implement the web in my home in centos? that web should be access by out site using public IP? is it possible? how to do that?
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Feb 21, 2011
The 3rd vendor SW is requesting to have KSH version older that 20100202. CentOS 5.5 (x86_64) comes with 20100202-1.el5_5.1 and downgrade version listed is 20100202-1.el5
sudo yum downgrade ksh*
Loaded plugins: fastestmirror
Setting up Downgrade Process
Loading mirror speeds from cached hostfile
[Code]....
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Jul 9, 2009
The first server I installed installed fine. The second server, installed with the same config, went to "kernel panic not syncing no init found try passing init= option in kernel" error. I tried reinstalling but it keeps going to that error after install reboot. The storage is ISCSI connected via Intel Server Adapter, which allows it to boot from ISCSI. Not sure if that's the cause for the problem, but the first server is connected to the same ISCSI and installed just fine.
Is there a way that I can make sure ISCSI module installs during installation? Although I think it is installed since it's able to copy the files and setup /dev/sda. I just wana make sure that it installs during setup.
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Mar 17, 2010
I am an old days RH release user(from 6.x) and just switching back from Debian/Ubuntu to CentOS on some servers, but I can not understand the kernel update strategy currently enabled in CentOS.There are two boxes, with almost identical installation, but recently there was an auto update of kernel on one box. This auto update also seems to issue an auto reboot on the machine, which is unacceptable on server machines.
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Oct 16, 2010
I'm setting up a raid 5 on several hard disks with a layer of lvm on top for good measure.I know the recent kernels support growing software raid, but since centos runs 2.6.18, I wanted to make sure it'll work. Does the centos kernel support growing raid devices?
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