When CentOS boots up, it tries to determine the IP for a network device (eth0) and fails.
'Determining IP information for eth0... failed; no link present.'
I'm curious to know how, after booting up, I could set the IP information for a wireless device, wlan0, manually. Another way of putting this questions is: if CentOS is able to determine IP information for a network device on bootup, what settings is it configuring exactly?
Is there a way to determine the IO size that is being used for reads and writes to an attached storage device? I am trying to pattern the IO sequences to storage. I have seen mentions to max_sectors_kb but the notes indicated that changing this value did not change the IO size to the storage.
View 1 Replies View RelatedI just compiled my first own kernel (I'm using Arch Linux), following the tutorial on the german site. Now I tried to boot it, I ended up failing with this message: Code: Waiting 10 seconds for device /dev/sda1 ... Root device '/dev/sda1' doesn't exist, Attempting to create it. ERROR: Unable to determine major/minor number of root device '/dev/sda1' Here is the important part of my menu.lst:
[Code]....
I simply copy&pasted the Arch-entry, i.e. I also had the disk by uuid there. The failure message was the same, just the root device name was the different name Also, at first I did not have the initrd line in my menu.lst (as written in my tutorial that I may not need it). In this case I had this error message:
[Code]....
When I run apps like mplayer to use my web cam it uses /dev/video#. For reason unknown to me this number changes and is usually either 1 or 0. I have looked on the Internet after struggling to find how to know which /dev/video device is used. So far I can only presume I have used the wrong terms to find how to determine which device the web cam is using.
View 5 Replies View RelatedFirst, (for samba) how do I determine whether my computer "gets IP address information from a dhcp server on the network," and whether "the dhcp server provides info about WINS servers ("NetBIOS name servers") present on the network," and consequently whether a change to my smb.conf file, "so that DHCP-provided WINS settings will automatically be read from /etc/samba/dhcp.conf," and whether the dhcp3-client package must be installed?
View 2 Replies View RelatedIs there a command to determine of a device supports IO Fencing?We are trying to run a Sybase cluster that shares storage. I'm sure the device supports fencing, but don't know how to show that it does.
View 1 Replies View RelatedI'm currently running Ubuntu (w/ GRUB) and Windows XP. I'd like to remove Ubuntu and run the recovery on Windows XP because it has started not running correctly. The computer is about 5 years old and I figured I'd just wipe it clean and start over (read: remove Ubuntu and reinstall windows via the recovery console).
I intend to follow the tutorial here: [URL]
However, I'm confused about determining the boot device number for Windows. I've run "sudo fdisk -l" and I can identify the windows drive in the list it says:
Device: /dev/sda1
Boot: *
Start: 1
End: 19352
Blocks: 155444908+
Id: 7
System: HPFS/NTFS
Am I looking for the 7, the 1, or something completely different? This is also the first partition on the list.
sda2 (id: c) is a FAT32 drive. I think this is the recovery partition included on the HP desktop.
sda3 (id:83) is Linux
sda4 (id: 82) is swap
I just need to run fixmbr.
I'm writing a bash script that needs to know whether or not a device node is part of a RAID array. I'm just curious if anyone knows of a good way to determine if a device node is in a RAID array. I know that you can run mdadm -Q or mdadm --examine on the device node and that will tell you. But I don't want to rely on screen scrapping and would rather have something that would return a boolean. Any ideas?
View 2 Replies View RelatedI'm trying to install DFE-550TX , network device of D-LINK, with no success. I'm using CentOS 5.6.
View 1 Replies View RelatedI just added a 2 port network card to a system that is running Fedora 11, but it is INACTIVE. I open the Network Device Control to activate it but there is no network ports in Network Device Control. It is empty.It looks like the system recognize the card and loaded correct driver.
View 4 Replies View RelatedI'm having a problem trying to customize Ubuntu 11.04 LiveCD.Everything went well until I tried to run the system updates on the LiveCD.This is the error message output:
Code:
root@lkjoel-desktop:/# sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
code....
I have 4 Dell R200's with Seagate 2x250Gb drives running software raid on CentOS 5.2 kernal 2.6.18-92.1.13.el5. They all get these errors 5-10 times a day and when the errors occure the servers apear to freeze and drop all network connections, very frustrating. I've updated to smartmontools 1:5.38-2.el5 and confirmed with Seagate that I have the latest drive firmware, and am now at a loss as to how to fix this. All of the systems report the problem only on sda not sdb.
[code]...
I am trying to remember how to determine the number of subnets there are in a given subnet range. The example range is shown below:Quote:217.133.64.0-217.133.127.255nce I did the binary conversions of the two addresses shown, the address that I got when comparing the two was the following:Quote:217.133.192.0he number of subnets I got from his was 63.Correct me if I am wrong, but is the number of subnets the difference between the number, in this case, the third octet and 255? If there is another, or correct, way of determining the number subnets what would it entail?
View 8 Replies View RelatedI have just installed Centos 5.4 on my box and run "yum update", but to my surprise it says there is nothing to be updated:
# yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* addons: centos.intergenia.de
* base: centos.intergenia.de
* extras: ftp-stud.fht-esslingen.de
* updates: centos.bio.lmu.de
Setting up Update Process No Packages marked for Update test
I am running a CentOS 5.6 32 bit installation under VMWare ESXi and have been experiencing some very high load values from time to time. The server is running multiple installations of gameservers, and the load fluctuates from around 1 to 9, with more or less the same amount of players playing (give or take 5-10 of a possible 80). I've been running DStat with almost all possible metrics, and, except for the large fluctuations in load, nothing else out of the ordinary seems to happen when load is rising. (Log data can be provided, if anyone wants to see it). Disk IO, Network throughput, memory consumption, CPU usage, process count, all stay at the same levels when the load is 1 as when it is 9. How I can begin to troubleshoot this, and find out why the load goes to such high values?
View 1 Replies View RelatedI'm highly suspicious that someone installed a backdoor on my system. Is there a program or way to determine this?
View 9 Replies View RelatedI'm writing to you because I encountered the following problem. My program displayes all network interfaces that are available in the system, but I would like to adda functionality in which a user can enter a destination address IP (ex. the IP address of the Google search engine) and will get information which network interface will be used to send it. As I know it is associated with reading information from routing table in the system. Maybe you know the API (functions/methods) which I could use to do it in RedHat ? I program in C/C++, but if you know how to do it in other programming languages (Java, Perl, Python) I will be grateful for any information.
View 4 Replies View RelatedIs there any command which could help me to determine which host name (domain name) an IP is connecting to from the command line?
View 5 Replies View RelatedI knew how to mount it and I was able to view files and folder in it but I don't know how to copy files using CUI (Command not GUI) mode. I have six separate iso files and I want to make a DVD in the removable device.
View 1 Replies View RelatedWhat would be the best way to determine memory consumed by each application running on the server?
View 7 Replies View RelatedHave VMWARE workstation 7. Have to extend partition /dev/sda1 mounted to /home/user
1. Originally /dev/sda was 10gb I've extended device via VMWARE to 30gb.
2. When I do: fdisk /dev/sda it tells me that /dev/sda 30gb
3. when I check: df -h /home
it shows 10GB
4. How I can make Linux see the 30gb at /home/user?
I want to get a list of all available Network-Device Names on my Linux server. I figured that
netstat -a
would do the job, however netstat produces quite much output:
eth0 Link encap:Ethernet Hardware Adresse 08:00:27:fc:5c:98
inet Adresse:192.168.2.222 Bcast:192.168.2.255 Maske:255.255.255.0
inet6-Adresse: fe80::a00:27ff:fefc:5c98/64 Gültigkeitsbereich:Verbindung
UP BROADCAST RUNNING MULTICAST MTU:1500 Metrik:1
[Code]....
I assume that this can be done by a combination of "cat", "sed" and "grep", but I have simply no clue of how to strip the uneccessary information.
I have setup a dual boot machine which has OS of Windows Vista (32 Bit) / RHEL 5. The LAN Card details are - Atheros L2 Fast Ethernet 10/100 Base T - Controller. The said Network Card works fine with the ADSL Connection in Windows OS, but does not seem to initialise in Linux. When I run "ifconfig" in terminal window it gives away the prompt - "eth0 no such device exists".Although it shoes the loopback adapter (lo) device working fine. I forgot to mention over here, I have just started with Linux. So, I request "the" Linux Gurus to help me out with this one.
View 1 Replies View RelatedI have installed live cd on usb pendrive. Everything works great. How can I find out which device driver it is using? Where are the device driver files stored? How do you specify the device driver when mounting a device?
View 3 Replies View RelatedIn my YaST Network Settings (11.3), I see an entry labelled "Unknown Network Device" how to remove the confusion? The Overview tab also correctly lists my three known network devices (listed below), as does the Hardware Information utility. This is the output of lspci, and as far as I can tell, is accurate and complete. So what has YaST seen that it can't identify?
Code:
00:00.0 Host bridge: Intel Corporation 82845 845 [Brookdale] Chipset Host Bridge (rev 11)
00:01.0 PCI bridge: Intel Corporation 82845 845 [Brookdale] Chipset AGP Bridge (rev 11)
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI [Code].....
I installed ZTE MF 626 modem in my F10 with kernel 2.6.27.12-170, i run usb_modeswitch and so far things happened normally. Watching through /var/log/messages it says that F10 detects two port device for this modem: ttyUSB1 and ttyUSB2, and in the sequence it disable port ttyUSB1 BUT Network Manager still set this port.I mean, when i connect via wvdial appointing to ttyUSB2 i get connection, but Network Manager fails to do it appointing to ttyUSB1. How to change device port in Network Manager?
View 1 Replies View RelatedI'm running Squeeze and I'm looking 3 days now for a solution in some weird problem. The NetworkManager Applet shows that there isn't connection although I am connected. The icon has this small "x" and when mouseover it says "No network conncection". Moreover when left clicking it, it says
"Wired Network Device not managed"
While I was looking for the solution a came across this post by an Ubuntu developer who says:network-manager-applet displays the connectivity state of network-manager's managed interfaces not every interface. So the title "network manager says disconnected but is connected and working" is actually misleading. The interface is connected and working but not from network-manager's point of view since it is not managing the interface. Additionally, in Lucid now network-manager applet displays nothing now for non-managed interfaces so is less misleading. You can check to see whether or not an interface is managed by network-manager by using the command line too nm-tool. You'll see "State: unmanaged" for unmanaged interfaces.
I'm on opensuse 11.4 (11.3 won't work with my monitor).
My computer gets internet through wireless and I want to share that internet through its ethernet port. So far I've tried using Knetworkmanager to create a network bridge between my wireless and wired connections. I created a new wired connection and shared it using the ip address settings. I was able to get both connections active, but the device hooked up via ethernet had no internet connectivity.
I also tried this command:
echo 1 > /proc/sys/net/ipv4/ip_forward
but another test resulted in the same fashion (no internet on wired). I believe anything I add to /proc should have an immediate effect, correct?
Having a hard time getting NM to detect wireless usb device: Linksys model WUSB600N. Here are a few commands I do know about.
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
irda0 no wireless extensions.
[code]....
I have had a Supermicro X7DCL-3 motherboard based machine, running CentOS 5.2 x86_64, recently upgraded to 5.3.Strangely enough, although I must have installed the 5.2 using DVD disk, the running system does not show the DVD drive. The machine was not used very much so I noticed that only today, after the update. There is no trace of it in 'dmesg', thera are no /dev/cd* and/or /dev/dvd* devices. The IDE controller is IT8213 (as shown by 'lspci'). In 5.2 kernel (2.6.18-92.el5-x86_64) lspci says "unknown device". I have checked the /usr/src/kernels/*/.config files and both kernels (5.2 and 2.6.18-128.el5-x86_64 of 5.3) seam to have the support for that controller added into the kernel:CONFIG_BLK_DEV_IT821X=yAny idea why it is not working? The Supermicro has apparently noticed this also as their OS compatibility chart lists the IDE interface for that motherboard as supported up to RHEL 5.1 but not for 5.2.
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