I have set up RHEL with single hard drive initially.But now i have installed new 5-hard drives of 1TB each.I have set it up as RAID 0 -Hardware RAID.The problem is linux detects and shows all hard drives as independent separate HDDS.I want to use LVM2 for software RAID 0 to show all hard drive volumes as single hard drives.
View 2 RepliesI had a raid 5 + lvm 2 array and lost a disk. While it was recovering the array, the power was down and recovery stopped. When I recovered the power and start the machine the array was unable to start, it was degraded and the states were different between disks. Every disk watched the array in a different way. I put you the states:
Quote:
/dev/sdd1
Number Major Minor RaidDevice State
this 0 8 33 0 active sync /dev/sdc1
[code]....
The first part in /dev/sdc1 is the same for all the devices, I just post you the states. Another thing is tha all the devices say that there is no superblock It seems that 3 disks are "active sync" but the states of the others doesn't match between them. And /dev/sdd1 is spare, the disk I added manually at first to start the recovery process.
We are planning to migrate our LINUX server from RHEL 3to RHEL 5. What are the configuration difference between RHEL 3 to RHEL 5 for webserver installations?
View 1 Replies View Relatedi want to know that if i install linux on to my pc with SWAP/ boot as partition and after that i want to convert them to LVM2 type configuration .how can i do that.i want to create a system having logical volumes from that system without reinstalling these partitions should convert into two LV's
LV 0 for root
LV 1 for swap
both in one volume group.
I have successful upgraded my system from Lenny to Squeeze and have even installed NVIDIA Driver successful, as well as other applications that I need. My system is now running smoothly and okey. My applications are also running smoothly except Skype 2.2 (Debian Forum Guys are currently helping me solve it).
However, I do want to upgrade my file system to ext4 in order to take its advance features and advantages especially that my system is now in WORK HORSE mode. However, I am not confident enough to do it because the guide is limited and does not tackle the issue of a system using ext3 with LVM2 on it.
Therefore, my question is how do I migrate (LIVE) my Ext3 to Ext4 on my system that uses LVM2? A clear and understandable guide is highly appreciated especially that I am newbie on it.
how to create RAID-1 in rhel-5
View 2 Replies View RelatedI'm having a problem installing RHEL-5 on my system. I have Windows 7 installed so far on a Dell XPS workstation that came with hardware RAID 0. I have 2 x 500 gb hard drives. So I went in Win 7 and partitioned my disk to leave about 75 gb of unallocated space to install RHEL-5 on. I load the RHEL-5 DVD into my disk, restart my comp, and just follow installation steps. Use about 73 GB as an ext3 partition for the RHEL-5 and have about 2 GB reserved for swap space. RHEL-5 installs, and I'm all done. However, when I reboot the computer, the GRUB boot loader fails to load. I'm directly taken into Windows. How do I recover GRUB so I have the option of loading into RHEL-5?
View 9 Replies View RelatedHave a customer who is due for a new system. AS they just renewed their RHEL entitlement, they plan on ordering a Dell server without a OS preload. Two questions:
- Will RH let them download RHEL6 just by maintaining the entitlement when their current version is RHEL 3?
- The server will have two RAID arrays - one intended for /home, one for "everything else". As I've never done a clean load with two arrays, how do I select what file systems go on which array?
I want to Install RHEL 4.7 64 bit on one my server (Supermicro Super Server) having RAID controller1. Intel2. AdaptecWe are using Adaptec.We are using RAID 1 with 2x320GB Hard disksPOINT: If we Install RHEL 5.3 it recognize RAID controller and show single Logical volume of 298 GB, Means working fine but when we try to install RHEL 4.7 it shows two hard disks of 298GB and 298GB,meanz its unable to recognize RAID controller.So, the issue is Driver of it, CD which we got from super micro having driver for RHEL 4 to RHEL 4 update 6We are making our DR site and its necessary for us to Install RHEL4.7 to make it identical.I searched a lot and spent more than three days on it continuously, And still unable to find the solution.
View 9 Replies View RelatedI wanna configure RAID 1 within TWO HDD in RHEL-5 during installation moment .I have the following questions regarding software raid vs hardware raid :
1) What is the basic difference between hardware and software raid
2) In software raid , If I use two HDD as RAID1 , then if one HDD is failed , can I boot it from another HDD ?
3)In software RAID , Between two HDD , If One HDD is failed then if I remove bad HDD and add a spare HDD then is it automatically synchronized with FIRST HDD ?
4) In software raid is it possible to keep '/boot' partition in two HDD (I use 2 HDD as RAID1) as separate partition ?
5) Finally is there any documnets or sites where I get software raid configuration during INSTALLATION moment in using GRAPHICAL mode , plz give me the address.
I have canon image runner 2200 network printer with scanner. i want configure that scanner in RHEL 5.anyone can help me about its configuration.
View 1 Replies View RelatedI have few doubts regarding fonts configuration in RHEL 5.4.
Code:
[vinay@linuxcoe4 fonts]$ cd /usr/share/X11/fonts
[vinay@linuxcoe4 fonts]$ ls
100dpi 75dpi encodings misc TTF Type1 util
[code]....
Also there is no fonts.dir file, which describes fonts under a specific fonts directory in /usr/share/fonts tree. But we can find fonts.dir or fonts.scale file under /usr/share/X11/fonts/ tree. Does files under /usr/share/fonts tree are not dependent on fonts.dir ?
Friends i got an opertunity to configure ddns in my office.I already configured staic dns in linux, but this is the first time iam configuring ddns.I just configured ddns in rhel 5.2 in my office.So far every thing working fine,dhcp is giving ip address to the clients and both forward and reverse dns database is updating.
1) In windows we can use flushdns and registerdns commands to update the dns database, like this any command is in linux to update client details in dns database?
2)how to restrict multiple client entries keeping in dhcp database.
3)if i change client hostname it is not updating the dns database,it is keeping the old one.
I have few doubts regarding fonts configuration in RHEL 5.4.
Code:
[vinay@linuxcoe4 fonts]$ cd /usr/share/X11/fonts
[vinay@linuxcoe4 fonts]$ ls
100dpi 75dpi encodings misc TTF Type1 util
[vinay@linuxcoe4 fonts]$ cd /usr/share/fonts/
[Code].....
What is the difference between fonts in /usr/share/X11/fonts and /usr/share/fonts
Also there is no fonts.dir file, which describes fonts under a specific fonts directory in /usr/share/fonts tree.
But we can find fonts.dir or fonts.scale file under /usr/share/X11/fonts/ tree. Does files under /usr/share/fonts tree are not dependent on fonts.dir ?
I believe that SU log messages are supposed to be appended to /var/log/messages but I'm not getting any log entries. I edited the /etc/syslog.conf and added the line below
su.* /var/log/sulog
Then ran /etc/rc.d/init.d/syslog restart (I also ran this prior to editing the syslog.conf file just in case). I'm still not getting any SU log messages.
I have and RHEL5.4 conecceted to an SAN HSV200. When I present a LUN to it, In system-confg-lvm gui appears a device like /dev/mapth/mapth0 (that�s the correct device to multipath) and other like /dev/sda or /dev/dm-N, as uninitialized entities. How could I configure to not display this device (/dev/sda) and prevent human errors?
This is the things I need:
1- I want (if it is posible...) to disappear the part where it says "uninitialized entities"
2- Is It necesary mantain the partitioning done to default (like /dev/mapper/mpath0p1) with device-mapper-multipath (kpartx command)? or Can I delete it without future problems?
This is the actual configuration that I have:
1- /etc/lvm/lvm.conf
Code:
preferred_names = [ "^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d" ]
filter = [ "a/dev/mapper/mpath.*/","a/dev/cciss/.*/","r/.*/" ]
2- /etc/multipath.conf
Code:
#blacklist {
# devnode "*"
#}
[code].....
I am trying to install and configure nagios on RHEL 5. I have apache 2 installed and php all working as exepected. When i install nagios following the these steps [URL]. The nagios folder that is suppossed to be placed under apache2's httpd is no where to be seen. So when I try to open localhost/nagios/. It says: The requested URL /nagios/ was not found on this server. What can I do for the nagios to work on this system. The apache and php are working fine.
View 1 Replies View Relatedissue in starting up Open view monitoring on couple of linux servers and here is the output from mii-tool looks like.
eth0: 100 Mbit, full duplex, link ok
eth1: 100 Mbit, full duplex, link ok
[code].....
Based on what I understand, eth0 goes to monitoring and the other 2 ethernet cards go to FE. I am not an expert in system administration but would like to know if there is any issues with the above settings/configuration (in fact, im also looking for what do they infer and what is the settings?
One monitor is working fine but the display is not coming on other monitor. I guess no problem in monitor because I swapped the cable to check the individual monitor. When I try to install the new driver its giving GCC-VERSION-CHECK while installing. And I do not think I have to install the new driver because it has already one. What should I do to configure the dual monitor. Do I have to edit any configuration file.
My system configuration details are below.
Redhat version : Redhat Enterprise Linux WS release 3 (Taroon update 4)
Driver in SRBC 26: NVIDIA-LINUX-x86_64-1.0-7664-pkg2.run
Nvidia card model : Quadro fx p171
Bios version of Nvidia : 4.35.20.23.07
p/n : 900-50171-0400-0000K
600-50171-0002-201J
I installed RHEL 6 Beta 2 on ESX box and found that network is to be manually started through ifup command.
View 6 Replies View RelatedI want to create a small network of 3-5 computers. I want to have one computer as my server and have services like NFS, DHCP, NTP, etc. I want to connect it to 2-4 other clients that have the bare minimal installation of linux on them. I would like 1 client computer to have a static ip address and I would like another to receive a dynamic ip address from the server. How would I go about doing all of this without the assistance of GUI's? I want to be able to do all this with the ks.cfg and network config files.
View 4 Replies View RelatedI am new to mysql can some one provide me the documentation or some recommended links to start the configuration of mysql server on RHEL. Also if I get the database schema, how can I replicate the same in my machine. Any documentation for this?
View 8 Replies View RelatedI have installed ldap and phpldapadmin.configuration looks like /etc/ldap.conf I added the lines
Quote:
base dc=devnet,dc=gd,dc=com
uri ldap://10.10.1.51/
/etc/openldap/ldap.conf
[code].....
Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
We've started using Debian based servers more and more in work and are getting the hang of it more and more every day. Right now I'm an ace at setting up partitions, software RAID and LVM volumes etc through the installer, but if I ever need to do the same thing once the system's up and running then I become unstuck.
Is there any way I can get to partman post-install, or any similar tools that do the same thing? Or failing that are there any simple guides to doing these things through the various command line tools?
If we want to use SSD drives on a database server, can we use RAID 0 configuration because of their reliability?
View 1 Replies View Relatedis it possible to use software RAID in this configuration?
160GB
sda1=sdb1
600GB
sda2
so have two HDD's mirroring each other, however one of the mirrored volumes is smaller than the other, and then use the rest of the larger disk as an unmirrored partition?
What are the bare minimum configuration files that would be needed to rebuild a RHEL server?We are thinking about creating a generic base image and then just copying over the necessary files (fstab, hosts, networking, etc) to get a failed system back up and running in the least amount of time possible. I am fairly new to Linux and have suggested that we have a share on a redundant server that is /server_configs/Svr_name/*.* (names are subject to change and *.* would be all of the pertinent config files to make a fresh build customized enough to emulate the failed server).Is this even possible and/or plausible?
View 1 Replies View RelatedJust setup with Debian 8 (LXDE) a few weeks ago. Raid10 array was preexisting.
Was working well. After booting I would need to go to the save as then would need to enter the root password and everything would be good.
Can't access the array.
Used to use the command $ mount /dev/dm-o /home/myspace/folder under Debian 7.6 to mount the array (no longer works).
blkd lists a /dev/md0 but instead of UUID it is PTUUID
[Code] .....
I have 2x 1.5TB hard disks and I'm going to buy a new 2TB drive soon. First though I just wanted to check that I could partition off the first 1/4 to 1/3 of the 2TB drive (leaving 1.5TB or more free) and install Debian to that part, then use the remainder of the disk in combination with the 2x 1.5 TB drives in RAID 5? i.e. can you mix whole drives and with partitions from other drives in RAID 5 and/or is it best to just stick with complete drives for the RAID array?I only have room for 3 drives in the small mATX case that houses my NAS device and I want to maximise storage capacity and minimise expense.
View 2 Replies View Related