similar to: KVM and DHCP

I had so much trouble putting Centos 6 guest VMs on a Centos 5 host that I finally switched to a Centos 6 host. I've not needed more that test VMs, so I've used Virtual Machine Manager on the old system, which worked pretty well, so I decided to create my first KVM guest machine. I noticed when I created it, I only had the options of NAT for my network interface, so I used that

Almost exactly two years ago, I released the first tutorial for building an HA platform for KVM VMs. In that time, I have learned a lot, created some tools to simplify management and refined the design to handle corner-cases seen in the field. Today, the culmination of that learning is summed up in the "2nd Edition" of that tutorial, now called "AN!Cluster Tutorial 2".

Forgive the out of band topic but I presume some of you here support MS desktops on your CentOS based services as do we. I am hoping that maybe one of you have run into this at some point. I am unable to find an answer on other forums and my google fu seems to have left me on this subject. I have a user that has somehow managed to remap their function keys so that they no longer work properly

Hi, I have two KVM hosts (CentOS 7) and would like them to operate as High Availability servers, automatically migrating guests when one of the hosts goes down. My question is: Is this even possible? All the documentation for HA that I've found appears to not do this. Am I missing something? My configuration so fare includes: * SAN Storage Volumes for raw device mappings for guest vms

Just installed from scratch 5.5 Weird, eth0 is now eth1 and eth1 is eth0. Don't even know how I'm sending this message as the the CentOS machine can't connect to the internet and this windoze box uses the Centos box as a gateway.

On 22/06/16 01:01 AM, Tom Robinson wrote: > Hi, > > I have two KVM hosts (CentOS 7) and would like them to operate as High Availability servers, > automatically migrating guests when one of the hosts goes down. > > My question is: Is this even possible? All the documentation for HA that I've found appears to not > do this. Am I missing something? Very possible. It's

I have a USB to ethernet device connected to CentOS 6.5 on my laptop. I setup ifcfg-eth0 and added BRIDGE=br0 on eth0 did service network restart, all came up. "seems" to be working. However when I plug an ethernet device into the USB port that is wanting DHCP it is not getting an address. Is there something I missed in the setup? I was expecting the device connected to the USB to

so I have a bunch of servers at work that are on DUAL UPS's (1 per each of 2 power supplies). Its mostly HP gear, but also some Sun and IBM. Ideally I'd like the system to not go into shutdown unless BOTH UPS's that a particular box is plugged into (there's actually 4 UPS, 2 per each of 2 racks). Has anyone ever configured anything like that with NUT or whatever? Right

Hi all, Up until now, we''ve been using Xen 3.0 on CentOS 5.x. Under this setup, dom0 was given a virtual ''ethX'' with the original ''ethX'' (now ''pethX'') IP address. Under this older config, neither ''pethX'' or ''xenbrX'' had an IP address. The logic was to keep traffic from the domU''s, through

On 01/06/15 12:00 PM, Digimer wrote: > Hi all, > > I'm developing a program that is not a distro, per-se, but sort of > acts like one. Basically, it's a modified CentOS ISO with some extra > RPMs added, unneeded RPMs removed and containing a modified boot screen > and install selection list. > > The list says "CentOS", so a user knows the installed

I'm creating a firewall HA cluster. The proof of concept for the basic firewall cluster is OK. I can bring up the cluster, start the iptables firewall, and move all of this with no problem. I'm using Conga to do all of this configuration on Centos 6.3 servers. To extend the "HA" part of this, I'd like to use bonded channels instead of plain old NICs. The firewall uses

We are at the stage, finally, where we are prepared to deploy public facing VM guests. Now we have to answer these questions: How many guests in total should we contemplate and what services are placed on which guests? My question comes down to whether it is considered advisable to run the primary DNS and IMAP, or indeed all services, on separate vm guests; or should we continue, more or less,

Hi all, With help from others, I''ve been able to get Olaf''s patch for enabling MTUs >1500 for vifX.y and tapZ devices working. I''ve been able to boot dom0, launch domU and live-migrate without having the bridge''s MTU degrade at any time. Would the Xen RPM maintainers (and others) mind taking a look at the following patches? Kernel part:

When my machine installs (CentOS 6.3) the two network cards are getting reversed. The PCI card is getting eth0 and the motherboard is getting eth1. I would like them in reverse order to keep things the same as they used to be. How can I easily tell these two to reverse? Generate the 70-persistent-net-rules with motherboard eth0 first then the PCI slot? Thanks, Jerry

On 09/17/2016 04:11 AM, Mauricio Tavares wrote: > On Sat, Sep 17, 2016 at 6:25 AM, Alice Wonder <alice at domblogger.net> wrote: >> Never used IPMI in my life and while I thought it was cool when I heard >> about it, had no plans to. >> > Under many different names (Sun called it LOM; I forgot IBM's > name), this has been out there for a while. And it

Hi All, I'm wanting to tell my centos box to get a dynamic ip via cli. I know I can do "ifconfig eth0 up", or "ifconfig eth0 191.168.100.35 netmask 255.255.255.0", but, how do I tell it to send the dhcp 0.0.0.0 broadcast to the DHCP server? Cheers. Mark Sargent.

On 07/07/16 05:36 PM, Digimer wrote: > On 07/07/16 05:21 PM, Joe Smithian wrote: >> Hi All, >> >> I see an unexpected beahviour from NetworkManager on CentOS 7.1. >> Using nmcli tool, I create a bond with two slaves as explained in the Red >> Hat 7.1 Networking guide. I enable slaves and master; bond works as >> expected. >> When I restart

On Mon, December 1, 2014 16:48, Les Mikesell wrote: > > Is there anyone who has more than a few boxes at more than one > location who _doesn't_ have this issue? I'd like to see a FAQ or > something by whoever designed the network configuration system about > how they planned for it to work (with and without GUI availability). > Likewise for what is supposed to happen

Hi All, I see an unexpected beahviour from NetworkManager on CentOS 7.1. Using nmcli tool, I create a bond with two slaves as explained in the Red Hat 7.1 Networking guide. I enable slaves and master; bond works as expected. When I restart NetworkManager, it creates a new bond with the same name but not connected to any device. Two bonds with the same name is confusing for my other monitoring

On Mon, June 23, 2014 00:29, Arun Khan wrote: > On Thu, Feb 20, 2014 at 3:36 AM, Dusty Mabe <dustymabe at gmail.com> wrote: >> >> On 02/19/2014 04:01 PM, James B. Byrne wrote: The root cause of the original problem was a change in the behaviour of libvirt (and the GUI of virt-manager) when creating new vms. The host system was already bridged and had other vms previously