Server :: DRBD Can't Mount On Secondary
Dec 6, 2010
I'm gonna set up a HA-cluster with the help of DRBD. I have installed DRBD and it's working on the Primary node, I synced them and formated it to ext3 and mounted it successfully on the Primary.
When I'm gonna mount it on the Secondary node it just tells me that I need to specify a filesystem.. so it looks like is hasn't been synced properly or something but both nodes are up to date.
This is my drbd.conf:
Code:
global {
usage-count no;
}
resource dbcluster {
[Code].....
and could mount it without any problems on dbcluster1, but it doesn't work on dbcluster2.. according to the documentation and various howtos I'm suppose to be able to use it, mount it on both nodes etc. unless I've missed something.
Does anyone know if there is something else I need to do to get it running properly on the Secondary?
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Apr 21, 2010
i tried installing the drbd for replication of data.. i found some tutorials but when i tried installing it i spits out an error of
Code:
E: Package drbd8-module-source has no installation candidate this is what i use to install it
Code:
apt-get install drbd8-utils drbd8-module-source drbd8-source build-essential
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May 21, 2011
i have a two node drbd cluster, while drbd1 is primary and drbd2 is slave i should make drbd1 slave and unmount drbd partition and make make drbd2 primary and mount drbd partition to see content on drbd2is it any way to automate it so as drbd1 goes down, drbd1 make itself primary and mount the partition?
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Dec 6, 2010
My question is one of my users was using open suse on his workstation (690 DELL),there are 4 harddrives connected to the machine one is of 160GB and the other three are of 1terrabytes.His 160GB HDD got corrupted the one which is having OS and we replaced it to the new one.User advised to install RHEL 5.2 so i installed RHEL 5.2on 160GB HDD by disconnecting the other three HDD.After installing the machine i tried to mount the other three HDD but could'nt.The error message iam getting is 'Not valid partitiion table'.
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[code]...
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Jul 9, 2011
How to mount secondary new hard disk in fedora?
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Mar 3, 2011
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Feb 12, 2011
is qmail server running in the secondary office and it was working fine. yesterday qmail suffered some problem.i came to know about the problem today.now after troubleshooting and looking into the server, the qmailclt stat commands shows that all services are working and there is nothing going crazy in the server. The maillog is showing errors which i am pasting here for the convienance.
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May 5, 2011
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Jul 26, 2010
We have hosting all the domains to one ISP domain and we want a secondary MX record. Is it possible to have a secondary MX record to another ISP so that if our internet is down we don't lose any email. the first ISP are not providing any secondary MX records
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configurations steps of RHEL 5.0 Secondary DNS ...
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Mar 17, 2011
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Apr 12, 2010
I have a secondary slave dns server setup, it has transferred all the records from the primary master.But when I run a few checks from outside using tools on the net it says:Tried to fetch SOA record for domain, but DNS server ns2.domain.com returned error code Refused.I disabled iptables, and tried again, same result. So I think it is something in the named.conf file? I appreciate any extra set of eyes on it. Just feel like I'm so close!
key "rndckey" {
algorithm hmac-md5;
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[code]....
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Jun 6, 2010
I'm pensioning off my 10-years-old home server and replacing it with an Ubuntu 10.04 box. The two storage devices are a Western Digital Caviar Green 2.0TB HD and an Intel X25-M 34nm Gen 2 80GB SATA II 2.5inch SSD (the box has 8GB RAM and an i5 750, if it matters).
I don't care much about boot times (since I don't plan to reboot all that often;-); the main frequent, performance-demanding task will be (re)building large open source C or C++ software packages from sources (as an open source contributor, I do that often).
So, I thought I'd keep the SSD as the secondary drive and the HD as the primary one, using the SSD mostly for the files that can otherwise demand a lot of seeking (esp. in a parallel make).
However, the friendly vendor (perhaps more experienced in Windows systems than in Linux ones) thinks the "normal" way to configure the machine would be with the SSD as the primary drive. I'm pretty rusty on configuring and tuning systems, so, I thought I'd better double check on SuperUser.
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Mar 12, 2011
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Aug 3, 2009
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The process I'm considering following is:
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Nov 30, 2010
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Dec 14, 2010
a machine with 2+ network cards, need to setup TFTP server on one card and use internet on another.
the tftpd server works on default routing network adaptor with following configuration.
How set the TFTP server on the secondary network adaptor?
TFTP server tftpd by xinetd configuration in: /etc/xinetd.d/tftp
{
protocol = udp
port = 69
socket_type = dgram
[Code]....
Could not find how to change the post <prefix> I remembered clearly I did before.
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Oct 15, 2010
It seems to be drbd is not available in ubuntu 10.10 at all. I just installed the drbd8-utils package thinking the kernel module would already be built-in. But I guess not, because here is the error I get:
Code:
# drbdadm syncer r0
Could not stat("/proc/drbd"): No such file or directory
do you need to load the module?
try: modprobe drbd
Command 'drbdsetup 1 syncer --set-defaults --create-device' terminated with exit code 20
drbdadm syncer r0: exited with code 20
[Code]...
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Apr 13, 2010
I'm running RHEL 5.5 on two workstation for test DRBD and I get something that sound strange ...[URL] Quote:Protocol C. Synchronous replication protocol. Local write operations on the primary node are considered completed only after both the local and the remote disk write have been confirmed. As a result, loss of a single node is guaranteed not to lead to any data loss. Data loss is, of course, inevitable even with this replication protocol if both nodes (or their storage subsystems) are irreversibly destroyed at the same time. By far, the most commonly used replication protocol in DRBD setups is protocol C.
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Aug 19, 2010
Iam trying to integrate drbd 8.0.16 in 5.3 release.
Installation of drbd was successful but modinfo fails to identify drbd kernel module.
[root@inccishh0884 usbs]# /sbin/modinfo drbd
modinfo: could not find module drbd
[root@inccishh0884 usbs]#
[root@inccishh0884 usbs]# ls -l `find /lib/modules -name drbd.ko`
[Code].....
how i can make the modinfo to identify the drbd modules present in 2.6.18-128.4.1/extra folder.
Is there a drbd module available that matches exactly with the kernel version 2.6.18-128.el5
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Nov 4, 2009
I've been working at creating a highly available set of host servers for a linux diskless boot cluster.Each host machine is fitted with redundant power supplies and two 1TB drives in a Raid-1 configuration.When I first started this project they each had twin 160GB drives. In my original setup I had both nodes acting as primary systems so that I could mount /dev/drbd0 to my /data directory and see changes immediately.It had worked in the past where I could make a file in /data on the first machine and it would show up in the /data directory on the second machine. One day this had stopped working where if I made a file on the first machine it would display on the second one until I unmounted /data and remounted it to the /dev/drbd0 disk.
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resource r0 {
protocol C;
#incon-degr-cmd "halt -f";
[code]....
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Jun 23, 2009
i have problems with my failover machines and cant locate the cause. The last update is quite some time ago.So will it hurt my configuration when I do an yum-update? I have 5 Xen VM on each machine, also they replicate with drbd and heartbeat. Can I just update the dom0 and leave the VM untouched inside?
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Aug 3, 2011
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ISP supplied CISCO router
Draytek VigorPro 5510 UTM
Untangle running in bridged mode (primarily used for SPAM filtering, URL blacklisting, and very little else) Exchange 2003 sits behind the Untangle box. This is how I want to end up:
CISCO >> Draytek >> Ubuntu gateway >> Exchange/secondary mail server
I know I could replace/remove the Draytek but I want it to remain for several reasons, including lots of VPN dial-in users already configured and that it offers us an additional layer of email antivirus scanning before things hit the Exchange box. No point switching all of our remote workers over to new tunnels unnecessarily...
I have done some research and have started testing a pilot secondary mail server using Ubuntu/postfix DNS is properly set up and MX records and reverse PTR records are all present and correct, and things are looking encouraging so far. Before I go out over deep waters and start to flounder, has anyone who has done something like this got any obvious howlers I should be looking to avoid ?
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Jun 28, 2009
script which can add a secondary group to all existing users except system users in linux.
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Apr 29, 2010
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Feb 9, 2010
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