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VM Customization Script - VMs not picking up a DHCP address from the VLAN. Static IP from the same VLAN works

January 16, 2015, 9:22 am
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Hi guys,

 

I am fairly new to the VMWare world and wondered if I could get your help.

 

I have a Template that I am creating a VM from and am using a customization script that semi works. I say semi because the script does everything but any Network related tasks such as joining the domain.

 

Upon further investigation, I found that none of the (200 VMs we have) are able to pick up a DHCP address when the VNIC is set to automatically obtain an IP address in the guest VM. The machine always gets an APIPA. Our server VLAN ID is 30 and I can see that the network port group/label associated with the VM has been configured with VLAN ID 30 under edit settings > VLAN (VLAN Type = VLAN and VLAN ID = 30). The weird thing is that if I configure a static address on the server with an address associated with VLAN 30, its all working fine.

 

Any ideas why DHCP doesnt work?

 

Many thanks,

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Re: Minimalist vs Ideal Lab

January 16, 2015, 9:25 am
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I just started working in a new environment that is all HP Blade technology, so I've been on the hunt for a C3000 and found one for a really good price locally. The only issue is, like you said, the noise that comes with some components. I'll take a look into the 380. Thanks!

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Can't get access to my esxi 5.5 through DCUI or console SSH - help!

January 16, 2015, 9:38 am
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Help. I was playing around with a Teradicci host card today and configured the host with pass-through but whilst in a putty session with the host I managed to loose connection. Following a reboot, I can no longer connect via SSH and when I try and use the DCUI locally the screen has stalled and just hangs.

 

Having done some research, I understand that because I have configured pass through the  onboard GPU has now been grabbed and therefore the VGA for a DCUI monitor is not avail;  I can no longer Putty into the host as I suspect the mngt services have stopped for some reason.

 

I have VMs on the host (local store) that I don't want to lose.  Can anyone suggest a rescue job pse???

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Re: VM Customization Script - VMs not picking up a DHCP address from the VLAN. Static IP from the same VLAN works

January 16, 2015, 9:37 am
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Have you remembered to set up IP helper on the switch?

Without IP helper function, the DHCP server will not be able to identify the correct subnet and issue the right IP address. Some switches also Block DHCP broadcasts across vlans if there is not configured IP helper.

If you tell us what kind of switch you use, then its easier to be specific

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Re: VM Customization Script - VMs not picking up a DHCP address from the VLAN. Static IP from the same VLAN works

January 16, 2015, 9:41 am
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Hi Hawkie,

 

Thank you for your rapid response.

 

On the Cisco switch, if I do an "sh run interface vlan 30", I can see that there are 4 IP helper addresses configured for the Vlan. Of the 4 - two are no longer working however, I understand that up to 16 IP Helper addresses can be configured and the DHCP request will go to all and the OFFER will come from any one of them.

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Re: VM Customization Script - VMs not picking up a DHCP address from the VLAN. Static IP from the same VLAN works

January 16, 2015, 9:45 am
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To give you an overview - the VMs all sit on UCS blades. I believe these all hook up to a switch in the rack??? (forgive me networking is not my strongest suit) and then this device connects to a Cisco core switch, which is where I am issuing the sh run interface vlan 30 command to see the IP helper addresses.

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Re: VM Customization Script - VMs not picking up a DHCP address from the VLAN. Static IP from the same VLAN works

January 16, 2015, 10:17 am
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I am guessing this is a UCS chassis managed by UCS manager then, and using the builtin Fabric Interconnect.

I am a bit on the side here when it comes to the UCS chassis, despite having a few of those at work, especially since Cisco is poor with information sharing.

 

Are you able to see if the requests arrive at your DHCP server? My guess as you have checked the IP helpers, is that you have a problem with routing from the DHCP server to return the DHCP offer. If you set a VM with static IP is the DHCP server able to ping the VM?

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ESXi 5.0 Cluster HA

January 16, 2015, 11:50 am
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ESXi 5.0 Cluster HA

 

I have looked but not to my satisfaction, to find the configuration and benefit of having a cluster of servers in vmware.

It would not be possible for me to look everywhere but it seemed this should be readily out there somewhere.

 

I have a 16 slot enclosure, with 6 blades in it currently,All blades the same and same storage access. All have the same esxi load.

SO a cluster of 6 servers will benefit the company ..........................?

1. Build a cluster.

2. assign HA.

 

3. The world is happy?

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SAN IOPS -- help!

January 16, 2015, 12:53 pm
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Hey folks,

 

I'm speccing a SAN array (EMC VNXe 3200) for a brand new VMWare implementation running six Windows 2012 guest VMs. The client has pushed back on the configuration I specced, asking why not use a configuration with slower drives but more storage space for the money. Here are the differences:

 

I speccedclient Googled
twelve 600GB 2.5” SAS drives at 10,000 RPM12 x 4TB 3.5” NL-SAS drives at 7,200 RPM
total RAID 6 storage = ~5.3TBtotal RAID 10 storage = ~22TB
$21,500$21,000

 

Please note (a) difference in RAID levels possible due to differences in drive capacities and (b) the 3.5” drives are NL-SAS but the 2.5” drives are pure SAS.

 

This prompted me to go to sleep that night thinking, “Gee, I was wondering when the day would come when I would finally do that much research on IOPS and RAID workloads.”

 

Based on my completely novice understanding of IOPS and RAID workloads, using EMC’s published drive W/R and latency times at http://tinyurl.com/cq577xe and based on an anticipated six Windows 2012 Server VMs (running standard office productivity-type workloads (no virtual desktops)), I calculated average IOPS under various W/R workloads and different RAID levels, and concluded that the IOPS numbers between the two configurations are roughly the same.

 

The relative parity in IOPS numbers is due to the fact that, despite the lower RPM of the NL-SATA drives, RAID 10 has a much lower write penalty than RAID 6. And actually, the RAID 10 configuration detailed above could reserve a drive as a hot spare and would still provide wayyyy more storage space than the client needs.

 

In case it matters for this discussion, the figures I arrived at for the entire array are:

W/R 80/20% => 398 IOPS

W/R 70/30% => 572 IOPS

W/R 60/40% => 746 IOPS

 

Assuming I didn’t munge the calculations (which of course is likely :-), and aside from the fact that NL-SAS drives have a higher MTBF than SAS drives, what else should I consider before telling the client, “Yeah okay, your suggested SAN array is better for the price”?

 

<whew>

 

Thanks!

noam

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Re: A problem was encountered while registering the provider

January 16, 2015, 12:55 pm
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I have exact same issue adding VNX Block storage.

Did you ever find a solution?

 

We do also have Isilon storage which we were able to successfully add.

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Issues with SBS 2011 VM

January 16, 2015, 1:29 pm
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I have a friend with a Dell T320 at his office running Esxi 5.5 build 1331820, they run a number of tax programs on the vm such as Quickbooks, Caseware to name a few. The experience issues from time to time, for example one day QB files will open within a few seconds, the next day the same file takes 2 min. We recently added more CPU and RAM to the virtual machine because we felt it needed it, we increased the RAM from 8GB to 16GB and increased the vCPU count from 2 to 4 and this seems to have helped a little. I have attached an image of the network configuration from Vcenter because I don't think it was setup correctly and would like advice. I am not certain this is a vmware issue specifically however I want to make sure that everything is setup correctly in the vmware environment. There is no AV software running on the server, we have checked physical connections, its strange and random. The event logs don't offer much information regarding the issue, rebooting the client workstations doesn't alleviate the problem either.

 

 

client vsphere network setup.jpg

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Re: A problem was encountered while registering the provider

January 16, 2015, 5:37 pm
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I wish I had something insightful to share but unfortunately, I do not. We restarted the process once more and got lucky. Good luck.

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ddos attack

January 16, 2015, 6:02 pm
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hi all,

my vmware server have 8 host and every host have one vswitch which limit at 100M.

right now, one of host got DDOS, but the network still up to 800M usage.

is there any way to set ,even one got DDOS,it won't affect whole vmware

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Re: 2 Hosts on 1 Physical (running ESXi 5.5) Server ?

January 16, 2015, 6:19 pm
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hi Richard, I wanna apologize that, there's another R420... in a Remote Data center, didn't see it before and it my mistake, thank you so much for your effort.

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want to visualize Physical ISA 2006

January 16, 2015, 6:23 pm
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Hi there, I have back-end firewall runs Physical ISA 2006 server runs on Win 2003 server, is it good/possible to visualize it and bring it to my vSphere server ?

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Re: 2 Hosts on 1 Physical (running ESXi 5.5) Server ?

January 16, 2015, 6:41 pm
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Nice man, this is what I told you on my last post, that should be another host in remote location.

 

Don't worry about the confusion and don't forget to award points for helpful or correct answers.

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Re: 2 Hosts on 1 Physical (running ESXi 5.5) Server ?

January 16, 2015, 6:46 pm
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ok done, anyway, i have published a new post about vitalizing my ISA 2006 firewall to VM in vcenter , can you please help on this ? it acts as a back-end firewall n proxy, includes 2 NICs (LAN n WAN connection) i just wanna bring this server to my vcenter as a VM, possible ?

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Install/Initial boot freezing at "Initializing ACPI" after upgrade

January 16, 2015, 7:35 pm
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I have a semi-legit home environment/lab with a half-rack. A few servers run Hyper-V and the rest run ESXi 5.5u1a (Build 1746018). No problems there.

 

Over the last roughly two weeks I have lost a few power supplies, motherboards, BBU's for RAID cards and other. This is a bit of a blessing in disguise as I now have an opportunity to tear the whole system apart to consolidate some things, shift things around, upgrade where funds allow, etc. etc. I had vCenter Server Appliance running within my cluster (I know bad practice) and it bit me in the rear end when things went down. This is why I am trying to get the following machine up running ESXi 5.5u1a (Build 1746018) -- so that I can temporarily manage the machines, move VM's and data around, etc. so that I can sort this mess out easier.

 

The machine is a Gateway SX2855-UR30P (rebranded Acer something or other) running an i3 2120 CPU with 4GB of non-ECC (desktop) RAM and I believe Intel H61 Express chipset. I understand that this is not supported hardware (it is junk desktop hardware). I installed a cheap video card with 512mb of RAM to get around the memory checks and I made a slipstream ISO using the Gen-3 NIC drivers (found here  http://www.virten.net/2013/09/esxi-5-x-installation-on-intel-nuc-fails-with-no-network-adapters/  ) to get around the non-supported onboard Intel 82579v NIC on the motherboard.

 

ESXi 5.1 Update 1 Build 1065491 works fine booting from a 2GB USB thumb drive.


Between reading the VMware KB's and having a moderate understanding of the difference between updates, upgrades and installs... Logic tells me that I should be able to update and/or upgrade (but not install) at least to 5.1u3 (Build 2323236) on the box, and as long as the drivers/VIB's are compatible, all the way up to 5.5u1a (Build 1746018)...

 

But nothing works past ESXi 5.1 Update 1 Build 1065491. Everything installs properly then during the initial boot (remove media and reboot) it freezes at the "Initializing ACPI..." on the yellow screen.

 

What am I missing? I see plenty of others posting around the web that they can save the old 5.0 VIB's and install/slipstream/force them into 5.5 installs or upgrades.... Why am I hanging at ACPI on each boot running anything higher than Build 1065491. And... What driver or where can I find the drivers that are working on Build 1065491 so that I can include them in the later upgrades?

 

Thanks for any help.

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vcenter cannot ping esxi host or any vmkernel IPs

January 16, 2015, 9:05 pm
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I got 2 remote office esxi host that my vcenter cannot ping. I can ping the vms inside the host but none of the vmkernel ips I can ping from my vcenter

 

any idea why?  Its only happening from the vcenter server. From the vcenter server I can ping other hosts on the same network. From the host itself I can ping the vcenter

 

I tried disabling firewall

 

 

esxcli network firewall set --enabled false

 

but still cannot ping.

 

I have another vcenter that I can ping the hosts just fine

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Re: PCI Device driver for ESXi 5.5.Device register to driver problem

January 16, 2015, 9:17 pm
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Problem solved myself.

It was related to device id into pci.ids file.

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