Red Hat :: RHEL 6 High Availability Fencing Drack Not Working?
May 12, 2011I am setting up a high availabilty system on a RHEL 6 system.
I have configured 2 nodes.
dev0301
Eth0:
[code]...
ADVERTISEMENT
Server :: High-Availability HTTP Load Balancer With HAProxy & Heartbeat On RHEL 5.4
Oct 15, 2010I am trying to setup a High-Availability HTTP Load Balancer With HAProxy & Heartbeat using the below links.
I have all RHEL 5.4 servers hosted on VMWare.
[url]
[url]
This is the scenario, as given in the links as wells as my setup.
Load Balancer 1
Load Balancer 2
Web Server 1
Web Server 2
I have followed all the steps mentioned in the links religiously except the 2.2 here, in which it is asking to configure the vhosts. I could not really understand , what is to be placed in /etc/httpd/conf.d/vhosts.conf file and in which Web Server.
Due to this step only, I think I am failing in Failover test given in Point 4.1 here. I am able to open the webpage by [url] which gives the content of Web Server 1 (http1.example.com). But, when I try to shutdown the http service (to check failover), it does not shows the contents of Web Server 2 (http2.example.com)
Although, I am able to succeed in Failover Test 4.2, in which shared IP 192.168.0.120 switches when I try to start/stop the any of the Load Balancers.
Server :: How To Achieve High Availability Website?
Apr 7, 2011I have 2 web servers running apache hosted at 2 data centres on 2 different IP ranges.The 2 servers are an exact clone of each other hosting www.example.com.What I am trying to achieve automatic failover. Say my first data centre gets wiped out, how would customers reach my website on my second server in the second data centre by still typing www.example.com?The aim is for the customer not to notice any difference.
View 3 Replies View RelatedDebian Configuration :: Fault Tolerance / High Availability
Aug 19, 2015I work for a data center where we use a whole lot of VMware's "Fault Tolerant" Solution. As a personal project, I want to piece together an alternative solution out of open source software.
Here's my punchlist:
*Configure Debian (or build from scratch) to be as slimmed down as possible so that I may call it "Just Enough OS" or "baremetal"
*Install and configure Xen with XenMotion
*Prove that both the physical and virtual fail-overs work as intended
*Prove the automatic repair of failed virtual machines.
Server :: Concept Of Fail Over High Availability Mode
Jun 25, 2009Now that I have setup a proxy server, as a next step I want to run it in fail-over high availability mode, so that if one proxy is down due to any reason, second proxy should automatically be up and start serving requests.
View 3 Replies View RelatedCentOS 5 :: Create A High Availability Environment Between Two Machines?
Jul 9, 2009Is there a way to create a high availability environment between two CentOS machines? I don't mean just the HTTP service or just one other thing. I need the entire server synced in real time ready to take over if the next goes down.
View 3 Replies View RelatedCentOS 5 :: Configure An ISCSI / DRBD High-availability Cluster
Jul 23, 2010I'm trying to configure an ISCSI/DRBD high-availability cluster and I'd like to know what is the best option between OpenAIS and Heartbeat. I've seen they both are included in Centos Repos, yet OpenAIS requires installing 2 addition repos to install Pacemaker (EPEL and Clusterlab repos).
View 1 Replies View RelatedNetworking :: Use Round Robin DNS Service For Setting Up A High Availability Solution?
Nov 16, 2010we use round robin DNS service for setting up a high availability solution ? i want to know whether it will work.
View 1 Replies View RelatedGeneral :: Enable High Availability Between Two Squid Proxy Servers Acting As One?
Sep 29, 2010I have setup proxy server as squid Now i would like to enable High Availability between two squid proxy servers acting as one.
View 6 Replies View RelatedRed Hat :: How Rhel Khigh Availability Works
May 23, 2011how rhel HA is work.
View 1 Replies View RelatedServer :: Build A Redundant, High-availability File Server System?
Mar 23, 2010I am kinda stuck while providing solution for the above problem. I have achieved the fail over using keepalived but not sure how can we replicate the data from one server to other seamlessly and have them in sync with each other. My prime requirement for this project is end user should not notice the fail over and replicated copy of data should be available on the secondary as well.
View 3 Replies View RelatedSoftware :: Running I/O Fencing In Windows?
Jul 27, 2010how to Configure Veritas Cluster Service -i/o Fencing in Windows? I have configured in linux (RHEL,SLES). But i dont know how to configure in windows.
View 1 Replies View RelatedGeneral :: Possible To Construct RHCS Without Fencing Device?
Mar 14, 2010Is it possible to construct RHCS without fencing device?
Can I try out redhat clustering in vmware with vm machine?
Server :: Determine If A Device Supports IO Fencing?
Jul 20, 2010Is 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 RelatedServer :: Create A Cluster Using Conga And Creating A Fencing?
Apr 7, 2011I am trying to create a cluster using conga and i am stuck at creating a fencing. I have no idea as what fencing device i have on my server or what fencing method to choose in creating the cluster. Can someone help me in this issue. I am trying to create cluster with 3 nodes (dell r910 machines with dell md3200 storage array )running redhat linux.
View 4 Replies View RelatedFedora Servers :: Fencing Failed At Cman Start / Solve It?
Jan 5, 2011Trying to run Cluster to use GFS over iSCSI, but get fencing error.
Here is what I do:
1. edit /etc/hosts code...
Programming :: Calculations - High Resolution Mandelbrot - Working Code
Feb 25, 2010I am piecing a Mandelbrot generator up, I have one working to produce a 1,500 x 1,500 picture (which is fairly accurate).
I would like to increase the resolution over 100,000 x 100,000 + (into the millions x millions).
How I can achieve this? What kind of buffer sizes do I need?
(note this code doesnt have any memory allocations yet)
Here is my code so far:
The program outputs the Mandelbrot as a .tga file. I calculated the image on fixed axis of -2 to 2 (on the x and y axis). Image produced: [url]
Ubuntu Multimedia :: NVidia GT 240 Card - Unable To Get High Resolution - Colour Or 3-D Acceleration Working With 8.04 Hardy
Aug 2, 2010Unable to get high res, colour or 3-D acceleration working with 8.04 Hardy. Not a hardware problem as it works perfectly in dual-boot XP.
[Code]...
Programming :: S_ISDIR Not Working In RHEL 6.1?
Jul 6, 2011I've got a program that was working fine in RHEL 5.4. On my RHEL 6.1 test server, the program failed to pick up the files on my samba mounted folders. I went through the code and found that S_ISDIR returns the folder in the mounted drive as FALSE. It has no problem with files on the local filesystem though. Any suggestions on how to fix this?
View 2 Replies View RelatedGeneral :: Internet Not Working In RHEL 5 Even After Configuring?
Apr 5, 2011I installed RHEL 5 today and set my network. Did it as follows:Eth0 connectionPrimary DNS 192.168.1.1When I click on Activate, it says:8139too device eth0 does not seem to be present, delaying initialization.This message shows no matter how many times I log out or restart.I don't know what the heck is the problem. I've done the essentials but still it's not working. I looked up on the net but people were saying things like ifconfig and lspci, and at the end still weren't able to solve it. I don't know all this since I'm new to Linux. Another important thing...after facing this same problem some time ago, I installed Centos which asked for internet settings right at the time of installation. And after logging in for the first time, I was able to use internet without any problem. How come internet works on Centos (which is a copy of RHEL) without any problems, but not working on RHEL itself?
View 14 Replies View RelatedGeneral :: RHEL 5.2 Image Restore ,MBR Not Working?
Aug 15, 2010dear sirs, i have taken image of 1 machine using acronis ver9.0 which has3gb swap /sda1
25gb /slash /sda2108gb /oracle /sda3so on another machine when i restore everything restore and data i can see, but boot, MBR not working.it just come written on screen "GRUB"i try to reinstall grub not workingbooth rhel cdthen type >linux rescue> chroot /mnt/sysimage>/sbin/grub-install /dev/sda2it give me error does not work and i reboot the machine.can someone teach or guide how to restore,repair, or fixed MBR
Server :: RHEL 4 Grub Timeout Not Working?
Mar 29, 2010I have an RHEL 4 server now running 2.6.9-89.0.18. After installing the kernel and rebooting to make this the current kernel, the grub menu to choose the kernel failed to offer a countdown and did not choose the kernel as it should have. I had to manually select the kernel.I inspected the grub.conf file and could not find any clue as to why it didn't work. The timeout directive is there, and the syntax matches other systems we have with the same kernel and OS.Can anyone provide any insight as to what else (other than a typo on the conf file) would cause this?The only difference between the way the kernel update (and the subsequent changes to the grub conf file) took place was a manual install of the RPM on the affected system, versus pulling it down from RHN using up2date.
View 11 Replies View RelatedSoftware :: RHEL 5.3 Serial Port Not Working?
Mar 8, 2010I have RHEL 5.3 installed on HP ProLiant DL320 Generation 5 but i cant get serial port workingdmesg | grep ttyserial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A00:09: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
setserial -g /dev/ttyS[0123]
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
[code]...
Red Hat :: Internet Not Working In Newly Installed RHEL 5?
Feb 4, 2011have installed RHEL 5 recently and want to use internet on it. However it doesn't activate my connection when I try activating it through System>Administration>Network>Devices Tab.
My network adapter is "Realtek RTL8139/810x Family Fast Ethernet NIC", and processor is Intel Core 2 Duo. I read in a thread somewhere to edit a file named resolv.conf to include DNS server address, but don't know how to go about it exactly. I asked my ISP and he gave me two DNS Ip addresses
OpenSUSE Install :: KDE 3.5.10 Availability Via 11.2?
Oct 29, 2009The following was on the openSUSE news page, but I missed it. There is guidance provided here, on how openSUSE-11.2 users will be able to add the option of the KDE-3.5.10 desktop to their openSUSE-11.2: KDE3 - openSUSE (after 11.2 is installed). Presumeably this is intended for openSUSE-11.2 KDE-4.3.1 users (as opposed to Gnome users? - I don't know). Also, as noted in that wiki, the KDE:KDE3 repository is currently unmaintained and may not even update and build correctly. SuSE-GmbH also do not accept any bugreports for it. Use at your own risk. They are also looking for volunteers in (helping) maintaining the KDE3 repository for openSUSE.
View 9 Replies View RelatedRed Hat / Fedora :: Network On RHEL 6 Virtual Host Installation - Not Working
Feb 25, 2011i installed RHEL 6 as virtual host on one of the blades on HP enclosure. i set up network on eth0 and started it but i cannot even ping gateway from within this installation. i logged in as root. i set up everything such as IP, netmask, gateway, nameserver etc.
View 1 Replies View RelatedSoftware :: RHEL 5 Apache Name Based Virtual Host Not Working
Jun 16, 2011I have setup apache webserver on RHEL5 working fine for months now. Next task is to add another domain name to the webserver using the same IP address. I have been trying to set up apache name based virtual host for the past several days without success. Each time I try elinks [URL] it went to the main page sales.example1.com. Main page sales.example1.com is on DNS but 2nd domain [URL] is not created on DNS yet. I just doing testing first on /etc/hosts.
10.145.13.10 sales.example1.com sales
10.145.13.10 www.exampletst.com
I have tried googling, search forum, and read documentation. I have checked my httpd.conf file several times but there must be some simple step or config error that I might miss:
Apache version is 2.2.3. Output of my httpd.conf file:-
NameVirtualHost *:80
# Default Virtual Host
<VirtualHost *:80>
ServerName sales.example1.com
DocumentRoot /var/www/html
DirectoryIndex index.html index.shtml index.php
</VirtualHost>
<VirtualHost *:80>
ServerName www.exampletst.com
DocumentRoot /var/www/virtual/tours
ErrorLog /var/log/httpd/tours_error_log
CustomLog /var/log/httpd/tours_access_log common
DirectoryIndex index.html index.shtml
<Directory "/var/www/virtual/tours/">
Options Indexes FollowSymLinks Includes
AllowOverride All
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
Networking :: Best Way For Backing Up Availability Of Server?
Jun 2, 2010At my work, we have an ISP that provides us with 2 connections with different IP addresses but at the moment they don't switch automatically if one fails, and can only work for outbound traffic.I tried to automate this with floating routing table on a CISCO 1711 router but then switching to the second link only happens when there's no longer a signal on the cable that's plugged into the router's interface directly -- and the failure most often happens somewhere in the middle. And that also does not make us available from outside.
Can anyone suggest a better way? Maybe an outside DNS server can have a second IP address recorded for our domain name?I found somewhere suggestions that a loadbalancer could solve that but these appliances are way too expensive.I also thought about using BGP but my router's RAM (128MB) is too small for the global routing table that BGP requires. And I also need an ISP (or better 2 ISPs) that provide BGP service. Before trying to convince others that we need to invest more into this, I'd like to know whether there are no easier ways.
Software :: Device Availability Report
Mar 17, 2011I hope this is the right place to ask this question. I have already asked this question on zenoss community forum but surprisingly didnt get much satisfactory answers. I want to monitor around 250 devices in my network (cisco routers). I want device availbility report (based on simple ping) on daily basis. Is such a report available in zenoss ?
View 2 Replies View RelatedSoftware :: Availability Of GUI Interface For Osiris?
Jun 24, 2010I know the Beltaine GUI interface is available for Samhain, but I was wondering if there is a similar application available for Osiris?
View 2 Replies View Related
