CentOS 5 Hardware :: SuperMicro / CentOS Compatibility - Specific Model 1026TT-TF
Sep 4, 2010
I am looking into 1026TT-TF and 6016TT-TF for a CentOS 5.4 or 5.5 64bit installation:
SuperMicro 6016TT-TF
SuperMicro 1026TT-TF
It will be used as a Web-server mostly. Since they are twin nodes, one node will be one strong firewall. I have been checking all over and I can't find any driver, bios, or issues with this specific motherboard from Supermicro and Intel 5500/5600 series CPUs. Is there anything that would concern you with these servers?
I am also looking to put in a 4-port Gigabit LAN card into one node which I doubt makes any difference in the whole equation. Further more, and most importantly, the first one takes only 2.5" HDDs and the second option accepts 3.5" HDDs. Other than size availability and price, are there any concerns regarding performance when chosing one over the other? System which accepts 3.5" HDDs only takes two per node so I have to opt for 1TB drives. For the 2.5" system I can go with 4 of 2.5" HDDs of 500GB in size. Either of options selected will be setup in RAID-1.
I just installed CentOS 5.2 on a mini Atom server and it wont recognize the nics. Not sure what kind they are, think they are Intel. (built in)It's the first time this has happened to me. Where do I start to get it to recognize the nics? Normally it works out of the box.
I am looking to create a user to be able to do WinSCP or SSH into the system and only be able to see /var/www/html/joomla/ and that is it. I don't want them to be able to start or stop service but be able to upload and download files to the specific directory or change privileges of the mentioned directory. Is that possible? what commands should I run.
I have installed Centos 5.6 (32 bit) in a virtual machine and would like to know if it is possible to update it to a 64 bit installation (probably I will also need to move to another version of the vm player too) or if there is any kind of compatibility lib(s)
i'm currently having trouble installing my D-Link DU-562M USB Modem in Centos 5.3. That is, my modem is not detected. When i issue the command ls /dev/tty*, i can't see any node pertaining to /dev/ttyUSB0 or more.. what should i do to make my modem work?
I want to put centOS on a laptop with the i7-640M processor. I'm trying to figure out before I purchase a laptop which laptop (if any) will work sufficiently well with centOS. The software I'll be running is only qualified on centOS.Where do I look to find such information?Specifically I'm considering the hp online configurable dv5t laptop with the i7-640M processor.
I'm planning to leave it in a closet most of the time and VNC over VPN to get to it.Digressing still further, the performance for a single threaded application as well as the price and power consumption for "always on" make it a good choice for a server applicaion... not to mention the battery backup in the event of power failure. It may not be designed to operate under high CPU load for extended periods of time so I my use external fans to improve ventilation around the unit or take other steps to mitigate a cooling deficiency.Digressing yet still further, yes I do need the performance of the i7 so lower power processors are not an option. I just really only need one or sometimes 2 cores at most making the 32nm i7-640M ideal.
Because I keep a lot of data on a Netgear ReadyNAS which can be presented as a NFS server, I would like to have the default CentOS user have a uid and gid that match those for the user that owns the main NFS share. That way I can treat it as if it were a directory that I owned on the local machine. I'm probably going to install CentOS 5.3 over again to get a totally clean system. What is the neatest way to ensure that the default user has the desired uid and gid? Or is there a better way to work with the NAS? (Right now I'm running it with CIFS shares, but these are quirky and do not behave quite like a local file system, I'm hoping that NFS would be more consistent, but previously attempts to run NFS were hampered by different uid and gid values).
So everything coming from the IAX-provider on port 4569 is forwarded to the Asterisk-server's WAN-interface (eth1). This needs then be routed to an internal SIP-phone (an IVR-system will define which one) via eth0.
When a call is initiated from an internal SIP-phone (they register to the IP-address assigned to eth0) it needs to be routed via eth1 to the gateway (192.168.4.250). Asterisk will setup an IAX-channel on WAN-interface (eth1) to the IAX-provider (via gateway).
So... will this work :
route add -net ip_IAXprovider netmask 255.255.255.0 gw 192.168.4.250 dev eth1
I got to establish an OpenVPN connection between two server and I have dhcpd on the client server which feeds a few SIP phones. All these phones are supposed to the register server through the tunnel.Here is the network structure:
Client CentOS: eth0: 192.168.0.0/24 eth1:192.168.100.0/24 tun0:172.15.0.0/24 DHCPD: feeding above eth1 and all the phones with 192.168.100.0/24
If I ping 172.15.0.1 from the the Client CentOS it works all fine. Everything pings and I can even do SSH. However, the phones which obtain their ip through eth1 on the same server can not reach the 172.15.0.1. I think it's a route issue here. Can you please guide me to the right direction as to how to forward certain traffic through tun0 and leave the rest of the traffic to go through eth0?
I don't want to turn on IPTABLES as this is time consuming for me now and there is VPN setup. It has to do with setting up the routing but I am not sure.
I have centos 5 installed. and i use a firefox 3.6 browser on it. the problem is that whenever i open some sites like facebook, or easyxdm.com, or some others, the screen just gets hung up and the os either restarts or remains hung up.
I run a bunch of CentOS 5.6 servers, where we continuously deploy our software. Our software comes in self-made rpm packages from a network-local yum repository. As bugs happen in software development, I sometimes want to downgrade to the previous release, so force the installation of a specific version of the package.I tried the allow-downgrade plugin, but so far no luck. Neither yum update nor yum install seem to work with allow-downgrade. (It does not seem to do anything?). Does anyone have a working example for yum --allow-downgrade?
This is what I tried: 1) Show current yum version [root]# yum --version
I want to lock the filesystem based on user basics, In effect only specific users should have write access. This need to done apart from normal permission setup.
Required: Only app users need to have write permission over app file system, this should done apart from the normal directory permissions. The all other users can able to view the contents even though other users have write permission based on permissions.
This need to done by over ridding the normal permission setup.
I know if I run repquota -a I can see the quotas set for all users.How do I modify the quota for a specific user?So say the output for john is:User used soft hard grace used soft hard grace----------------------------------------------------------------------john.someth -- 122844 51200 51200 4995 0 0How do I make his block limits 0 so they are unlimited?
I've several servers (windows+linux) that authenticate to an LDAP server. There is one machine that I would like to allow only certain groups from LDAP server to have access and I am not sure where to start.
If that cannot be done, is it possible to disable LDAP root user to access these machines?
Now that IPv6 is becoming more and more common, I found the need to disable IPv6 on some interfaces but have it enabled on other. I found that /proc/sys/net/ipv6/conf/*/disable_ipv6 does exactly that. I am now wondering if anybody knows, why are networking scripts so counterintuitive. /etc/sysconfig/network has an option:
NETWORKING_IPV6=yes
All this option does is disable some ipv6 services (dhcpv6...), it does not disable IPv6 in whole (as one would assume...that's why you had to disable it with module parameters). Searching for more IP6 related config option, one can find that /etc/sysconfig/network-scripts/ifcfg-* scripts can contain:
IPV6INIT=yes
Again, this option does not disable IPv6 protocol on the interface, it just skips running ifup-ipv6/ifdown-ipv6 scripts. I added a /sbin/ifup-pre-local. Now, this script runs before ethX entries are created (other scripts run when it's already too late) in /proc directory, so it modifies default values which are then used after those entries are created:
I have a file with tens of thousands of lines. I need to remove specific letters eg eggs, from every line that has the letters in it. Is there a command which can help me do that easily?
I have been reading about rescue CD's but haven't found out whether I can make one using my currently running Centos(centos-release-5-4.el5.centos.1 ).I tried to use a Centos cd we have here and it looks fine till it asks where the 'tree' structure is located, when I select cd it ejects it and asks the same question again. Do I need to build a rescue cd containing directory info of my specific system?This is related to wanting to fsck my file system.
Problems with xen 3.1.2 creating and installing domU CentOS 5.5 I am trying to do a virt-install --prompt --paravirt, and the install error out while trying to download install RPMs. I have googled for xen centos virt-install and various permutations. I have found similar howtos for 5.4 and 5.3, but they resulted in the same outcome. I did find several posts with similar issues, but no solution was posted.[URL]..
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?
i am using openssh 5.2-p1, i want to restrict user "admin" to login to the server from a specific IP address, for this purpose i have tried the following blocks in sshd_config file.Following is the part of the sshd_config file which i have modified
#The following commands will only allow specific IP to login to ssh.
#AllowUsers admin user1 user2
#AllowGroups
# override default of no subsystems.Subsystem sftp internal-sftp
Match Group sftpgroup ChrootDirectory /home AllowTCPForwarding no[code].....
i want to restrict admin user to login to the server only from 172.16.100.221 IP which can be done by using AllowUser line, but i dont want to use AllowUser line,
On a Supermicro 6027R TRF, I run the latest Debian Wheezy. I have a problem with the server, because I cannot control fan speed anymore.
My plan was to control the drive bay LEDs via software, so I installed i2c-tools and ledmon packages. While I was at it, I also installed fancontrol and lm-sensors.
Then I ran the Superdoctor program (distributed on the Supermicro website) that prints information on fan speed, temperatures and system voltages. I ran it only once by executing the command "sdt" as root. After the command completed, the 3 system fans started spinning at max RPM. And this is extremely noisy! The program had run before, but without spinning up the fans.
Since then I didn't manage to regain control of the fans. Even after a reboot the fans start to speed. Also, removing the installed packages again does not work.
I also tried to control the fans with the fancontrol package, but this fails because I do not have a correct fancontrol config file. I am supposed to run pwmconfig first to create such a file, but this fails as well ("/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed")
I have collected the output of sensors-detect, sensors and pwmconfig here: [URL] ....
The installer can't see my raid controller (I assume) as I'm getting the following error:"Error opening /dev/mapper/isw_jbhgjgjj_Vol0: No such device or address"It just sees them as 4 individual drives: sda, sdb, sdc and sdd.Please note that I have set up the RAID 5 in the controller bios interface and the image name is Vol0, which it seems that it tries to load but for some particular reason it can't.I have also tried different bios settings and nothing worked.
I'm running a fresh install on an intel i7 system on an asus p6t deluxe v2 motherboard with the onboard NIC (Marvell Technology pci-e). I know the NIC is working as when I boot into the onboard OS that Asus provides (Asus Express Gate SSD)I have a working net connection.Booting up CentOS hangs at determining IP information for eth0 and eventually fails with the following error:PING xxx.170.30.1 from xxx.170.31.231 eth0: 56(84) bytes of data---xxx.170.30.1 ping statistics ---4 packets transmitted, o received, +3 errors, 100% packet loss, time 2999ms, pipe 3 failed.
