I'm trying to figure out if a VLAN can use both a trunk port and access port on a switch. If so, would the switch would be smart enough to figure out which packets to tag/untag? Thank you for your guidance.
Can iptables be used to filter local traffic?
I am confused by how this should be set up. For example, here is a diagram of how I picture the set up would be:
I just don't see how iptables would be able to intercept data that is not going to it. Any advice would be appreciated.
Is anyone aware what would happen if VMware ESXi is unable to start back up a secondary instance of a VM configured for fault tolerance? Is there a fallback plan to try and get the VM up? Or is the VM considered failed at this point?
Initially, when a VM is configured for FT, a secondary instance is created for it. When the primary fails, the secondary instance takes over to become the primary and another secondary instance is created for that one. When there is no more resources to create another secondary instance when x failures occur, is it correct to assume that the VM is failed at this point and nothing else can be done about it? Hope that is clearer.
Thanks for any insight!
When a cluster is configured for High Availability (HA), VMs can be restarted onto an alternate host when the its host has failed. However, I am wondering: if the host has failed, is there a means within the vSphere HA to restart the failed host to attempt to bring it back up? Does vSphere HA just leave the failed host as is? Or must this be a manual effort for an administrator to restart the host? Thanks for any insight.
I can't seem to find the answers to these questions within the vSphere 5 Documentation center, so please share if you are aware of any aspects of these questions.
- What happens to the failed VM that has been configured for High Availability (HA)? for Fault Tolerance (FT)? Is it automatically stopped and are their resources released (but restarted (HA) or secondary instance takes over (FT))?
- What are the typical methods to debug what has happened to a failed VM? Through logs or a VMware VM monitoring UI? Would the user be notified of the VM failure?
- Is it possible to clone a VM before it is restarted or failed over to later debug what happened to it?
Thanks!!
In this Computer World article, it specifies that PostgreSQL can scale up to a core limit of 64. Does this mean for one multi-core processor of 64 cores? Or multiple processors with fewer cores?
The reason why I ask is because I am trying to find how much processors PostgreSQL may scale up to but of course that may be limited to the type of processor. However, I've been finding other statistics in other databases (i.e. Microsoft SQL Server here stating it can scale up to 320 logical processors) and they don't specify their number of cores. Is this a very vague statistic?
Any thoughts would be much appreciated. Thanks!
I am able to get several of my RedHat machines to join my Windows Server 2008 Active Directory and am able to log into them with my registered users in the domain. However, for some reason, they aren't listed under Server Manager -> Roles -> Active Directory Domain Services -> Active Directory Users and Computers > domain name > Computers. Only the Windows computers are listed there. Is this normal? Is there a procedure to get it listed there?
Thanks.
I am trying to remove several user's mailboxes in the Exchange Server. Exchange Server is on a member server (OS: Window Server 2003). When I try to remove the Administrator mailbox, it says this:
Note: I had to censor my windows server name where my active director resides (on another machine that has OS Win Server 2008) What does this error mean? Seems like a connection problem from member server to server of active directory, but I am able to ping back and forth. How may I resolve this?
Many thanks.
I'm trying to install IIS on Windows Server 2003 and in the Windows Components Wizard, it prompts me to "Insert Service Pack 2 CD-ROM".. I'm assuming this is the Windows Server 2003 installation CD, CD 2. However when I try to put it in, it doesn't seem to recognize it.. In the D: drive, it is called CR0SCD2X_EN. Do you folks have any ideas on how to fix this? Thanks.
Edit: I entered in CD1 and seems like it gave it a kick start. However, now it is complaining about where a convlog.exe file is. Doesn't seem to be in CD1 or CD2. :(
I am trying to install Microsoft Exchange 2007 to a Windows Server 2003 as a member server. I already have a Windows Server 2008 as my domain controller. I'm having a hard time figuring out what is needed to prepare the machine for Exchange 2007 installation. My specific question is: While following the procedures here in the TechNet Library , do I still need to go through with the section "How to Prepare Active Directory and Domains" and do the following commands if I am making it a member server and NOT a domain controller? ie.. setup /ps setup /p /on: setup /PrepareDomain:
Thank you.
I'm installing Windows Server 2003 and I need to ensure the following services are installed and enabled: -.NET framework -ASP.NET & latest device updates
Which version of .NET do they mean? Do I need to download them all? (v 1.1, 2.0, 3.0, 3.5, 4)
Thanks!
If I join a Windows Server 2003 machine as a member server to another Window Server 2008 machine that is a DC, can I have a mailbox server in the Window Server 2003 member server? Or is that only for DCs? Thanks..
I've had trouble exporting VMs, renaming them and importing them back into my inventory. What is the best way to do this inside vSphere Client? I am using vSphere Hypervisor version 4.1. Thanks.
Why do I have 2 of the same devices but different nicknames? Do I need to delete one? What is with this eth0.bak? Thanks for any advice. =)
BTW, this is from RHEL virtual machine in case that helps any.
From the request below, here are some more details of my networking setup. I don't see any other indication of a eth0.bak here. Is it safe to just follow dmourati's instructions to bring down this eth0.back? Thanks again. 
I added a file in /etc/init.d but noticed that the file isn't a green color like the other files when I do a ls -l What should I do to make it "green" or add the necessary file permissions?
Why are the files green in the first place?
I am using vSphere Hypervisor 4.1.0 and vSphere Client and from the vSphere Client, if you go to the Summary tab of a VM, how do you change the Host name in the General box? I am stumped. I heard the hostname from the vSphere doesn't affect networking, but how do change it for asthetics? I have already configured the proper hostname inside the VM, but it doesn't show any new changes in the Summary tab.
Possible Duplicate:
Can you help me with my software licensing question?
I have a TechNet Subscription and have (1) Windows Server 2008 product key. It says this type is MultipleActivation. My question is... if I installed the key on a VM, and then later wanted to delete the VM, can I reuse the same product key? Will I be penalized for doing such a thing?
Possible Duplicate:
Can you help me with my software licensing question?
I want to use TechNet to download Windows 7 and Windows Server 2008 to two virtual machines. I am not familiar with TechNet so I am hoping you can guide me in the right direction. :) In the system requirements, it says you need a Windows 7 OS or other supported versions but I could not find any reference on the other supported versions at this link. I only have a base Windows XP so I am hoping that will cut it. When I use the TechNet on the Windows XP, how do I change the OS? At this point, will the Windows XP OS be gone? What happens after the 12 month subscription? Does everything revert back to before? Thanks!!
I am dumbfounded. I am trying to ping one of my RHEL VMs with my Windows vSphere client box. The hostname of this VM is set as, lets say "MyVM". I verified this with the command hostname. Using dnsdomainname, I get dnsdomainname: Unknown host. I don't think that should matter at this point as long as everything is connected on the same network, right? My vSphere host's hostname is also localhost. When I try to do ping MyVM from my Windows vSphere client box, it says Ping request could not find host MyVM. Please check the name and try again. However, when I try pinging the IP address of the VM, it is okay. I think I am missing something critical here. Can anyone pinpoint what that is? Thanks! =)
When I create VMs, my automatic hostname is localhost.localdomain. This is creating some networking issues from my VM to another Windows computer that I have (cannot ping to my VM). How can I change my hostname of my VM? Do I need to also change it inside my VM as well as in the vSphere Client?
Update:
I have changed my hostname of my RHEL VM to say "MyVM" and verified this in /etc/hosts and /etc/sysconfig/network. However, I am still unable to ping to MyVM from another Windows computer on my network. Does this have anything to do with the dnsdomainname? I get dnsdomainname: Unknown host. On my vSphere Client, it still says the Host is localhost.localdomain, but from your responses below, it should not matter about what the vSphere Client says..
Any thoughts?
Thanks!!