Comments on: Changing the IP-address of an ESX host and HA http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/ Building blocks for virtualization... Fri, 19 Mar 2010 14:22:45 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Ricky http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-6888 Ricky Thu, 04 Mar 2010 15:45:32 +0000 http://www.yellow-bricks.com/?p=187#comment-6888 The solution to our design problem is to divide whatever class of IP address we are assigned into a number of smaller networks with fewer hosts per network. This following <a href="http://www.adminkernel.com/networking-concepts/ip-subnets" rel="nofollow">link </a> helps you to know the IP Subnets. The solution to our design problem is to divide whatever class of IP address we are assigned into a number of smaller networks with fewer hosts per network.
This following link helps you to know the IP Subnets.

]]> By: santhosh http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-797 santhosh Tue, 05 Aug 2008 09:55:32 +0000 http://www.yellow-bricks.com/?p=187#comment-797 Thats a great chunk of information. Can you please tell me if this is the same for ESX 3i. bcause we have lmitation of the the service console. Thats a great chunk of information.

Can you please tell me if this is the same for ESX 3i. bcause we have lmitation of the the service console.

]]> By: Duncan http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-717 Duncan Tue, 22 Jul 2008 18:14:49 +0000 http://www.yellow-bricks.com/?p=187#comment-717 I would have to go for DNS. I've been using hosts files a lot and still notice people make a lot of mistakes, which can give huge and weird problems. I've seen hosts files on 10 servers each being different. I would have to go for DNS. I’ve been using hosts files a lot and still notice people make a lot of mistakes, which can give huge and weird problems. I’ve seen hosts files on 10 servers each being different.

]]> By: Jan Ivar Beddari http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-716 Jan Ivar Beddari Tue, 22 Jul 2008 16:59:11 +0000 http://www.yellow-bricks.com/?p=187#comment-716 Out of debugging interest, how do you resolve DNS entries on your VC server? How do you resolve DNS on your hosts? Do they all point to a common DNS-server or do you use a static hosts-file setup? Ive been using static entries in /etc/hosts and system32\drivers\etc\hosts on the VC server. So far I havent had any trouble with this approach but I wonder how the DNS logic for HA works .. Out of debugging interest, how do you resolve DNS entries on your VC server? How do you resolve DNS on your hosts? Do they all point to a common DNS-server or do you use a static hosts-file setup?

Ive been using static entries in /etc/hosts and system32\drivers\etc\hosts on the VC server. So far I havent had any trouble with this approach but I wonder how the DNS logic for HA works ..

]]> By: Configuration of host IP address is inconsistent on host - VMware HA issues | VM /ETC http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-589 Configuration of host IP address is inconsistent on host - VMware HA issues | VM /ETC Sat, 07 Jun 2008 14:29:52 +0000 http://www.yellow-bricks.com/?p=187#comment-589 [...] over at yellow-bricks.com has posted a very helpful VMware HA troubleshooting tip. Changing the IP-address of an ESX host and HA deals with fixing HA issues that arise after changing the ip address of ESX hosts. In summary, [...] [...] over at yellow-bricks.com has posted a very helpful VMware HA troubleshooting tip. Changing the IP-address of an ESX host and HA deals with fixing HA issues that arise after changing the ip address of ESX hosts. In summary, [...]

]]> By: Change ESX host IP address | Booches.nl http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-579 Change ESX host IP address | Booches.nl Thu, 05 Jun 2008 08:10:46 +0000 http://www.yellow-bricks.com/?p=187#comment-579 [...] A detailed solution can be found on Duncan’s blog, right here. [...] [...] A detailed solution can be found on Duncan’s blog, right here. [...]

]]> By: Steffen Özcan http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-574 Steffen Özcan Wed, 04 Jun 2008 16:34:31 +0000 http://www.yellow-bricks.com/?p=187#comment-574 Hi Duncan, I read your post this morning and said to myself: "nice, that could quite be useful someday". Someday turned out to be very soon. This afternoon one of my hosts reported a HA error. A "reconfigure HA" on that host didn't work, the error i got was "Command ‘hostname -s’ on host wevhx001 failed or returned incorrect name format". When i logged into the host, he told me that his hostname now is "i". great. the /opt/vmware/aam/bin/ft_gethostbyname-command didn't work, and all other hosts in this cluster (4 nodes) reported the IP and hostname from the failing host when i dropped the command on them. the solution was, the hostname changed for the runtime only in /proc/sys/kernel/hostname, for whatever reason. I have to investigate on this. In the meantime, every now and then one of the other hosts reported HA errors too. Very strange. After i corrected the hostname in /proc/sys/kernel/hostname, a cluster-wide HA reset solved the issues for the moment, Thanks for your great posts, without them it would definitely have taken a lot more time to solve this problem and a lot others! best regards Stefffen Hi Duncan, I read your post this morning and said to myself: “nice, that could quite be useful someday”. Someday turned out to be very soon.
This afternoon one of my hosts reported a HA error. A “reconfigure HA” on that host didn’t work, the error i got was “Command ‘hostname -s’ on host wevhx001 failed or returned incorrect name format”. When i logged into the host, he told me that his hostname now is “i”. great. the /opt/vmware/aam/bin/ft_gethostbyname-command didn’t work, and all other hosts in this cluster (4 nodes) reported the IP and hostname from the failing host when i dropped the command on them. the solution was, the hostname changed for the runtime only in /proc/sys/kernel/hostname, for whatever reason. I have to investigate on this. In the meantime, every now and then one of the other hosts reported HA errors too. Very strange. After i corrected the hostname in /proc/sys/kernel/hostname, a cluster-wide HA reset solved the issues for the moment,
Thanks for your great posts, without them it would definitely have taken a lot more time to solve this problem and a lot others!

best regards
Stefffen

]]> By: Aaron Delp http://www.yellow-bricks.com/2008/06/04/changing-the-ip-address-of-an-esx-host-and-ha/comment-page-1/#comment-569 Aaron Delp Wed, 04 Jun 2008 13:38:30 +0000 http://www.yellow-bricks.com/?p=187#comment-569 Great article, I'm adding it to my bag of tricks. Thank you! Aaron Great article, I’m adding it to my bag of tricks. Thank you!

Aaron

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