I was thinking of something more in line with "take this system out of the
pool safely while letting current connections finish". This is typical of
F5/A10/etc.., so I'm hoping to be able to do something similar. The key
being that it is a deliberate act and thus wouldn't trigger an alert in
farmguardian.
On Mon, May 11, 2015 at 3:46 PM, Justin Bennett <jbenn...@msjc.edu> wrote:
> Hi Chris,
>
>
>
> Seems like you could use FarmGuardian to control which servers are active
> in the Farm. You could use the traditional checking of a port via
> check_http/check_smtp/check_tcp – or you create your own script to control
> each system’s membership.
>
>
>
> http://www.zenloadbalancer.com/farmguardian-quick-start/
>
>
>
> -Justin
>
>
>
> *From:* Christopher Young [mailto:mexigaba...@gmail.com]
> *Sent:* Monday, May 11, 2015 11:49 AM
> *To:* zenloadbalancer-support@lists.sourceforge.net
> *Subject:* Re: [Zenloadbalancer-support] Cluster Setup and a Question
>
>
>
> I just wanted to follow-up so that it is documented on how to get this
> working on oVirt/RHEV. I had to install a VDSM hook to allow mac-spoofing
> as a VM custom property like so (on each node):
>
>
>
> yum install vdsm-hook-macspoof
>
>
>
> That requires a restart of vdsmd on the node as well as a process on the
> oVirt/RHEV engine:
>
>
>
> engine-config -s "UserDefinedVMProperties=macspoof=(true|false)"
>
>
>
> Which then requires a restart of the oVirt/RHEV engine.
>
>
>
> After that, there will be an available custom properly on the VM called
> 'macspoof' that can be set to 'true'. Once I did this and shutdown/powered
> on the VMs, the cluster setup now completes successfully. You learn
> something every day.
>
>
>
> Thanks for pointing me in the right direction. The one thing I wish I had
> on these VMs is the ovirt-guest-agent which would likely work except that
> Debian 6 doesn't seem to have python-ethtool package/deps. If there are
> any plans to update the version of Debian that ZLB is based on, let me know.
>
>
>
> ---
>
> RE: command-line tools.
>
> Not to keep pushing :) But, I was curious about performing basic actions
> via command line to take systems/IPs down/up (in or out) of farms/pools.
> Is there a method one could use to be able to do that. My thinking is that
> when upgrading components, I'd like my config management (Ansible in my
> case) to be able to run something that would take a system out of the pool
> and then put it back in after (maybe even with some level of
> confirmation). It would also be helpful to be able to view the number of
> connections to a host via the command line to control the process (don't
> proceed until there are no more connections to this host/IP). Let me know
> if there is any direction for that for me to head into...
>
>
>
>
>
> Thanks again!
>
>
>
> Chris
>
>
>
> On Mon, May 11, 2015 at 2:02 PM, Christopher Young <mexigaba...@gmail.com>
> wrote:
>
> I'm using oVirt/RHEV (KVM-based). I will see if I can find a similar
> procedure. I think I understand where the issue is now that you mention
> MAC spoofing. Thanks for the tip!
>
>
>
> On Mon, May 11, 2015 at 1:56 PM, Justin Bennett <jbenn...@msjc.edu> wrote:
>
> If you are trying to setup a cluster in a virtual environment, be sure
> to allow MAC address spoofing.
>
>
>
> Hyper-V - Enable spoofing of MAC addresses
>
> https://technet.microsoft.com/en-us/library/cc917873.aspx
>
>
>
> VMware – Allow Forged Transmissions and MAC Address Changes
>
>
> https://pubs.vmware.com/vsphere-51/index.jsp#com.vmware.vsphere.security.doc/GUID-7DC6486F-5400-44DF-8A62-6273798A2F80.html
>
>
> https://pubs.vmware.com/vsphere-51/index.jsp#com.vmware.vsphere.security.doc/GUID-942BD3AA-731B-4A05-8196-66F2B4BF1ACB.html
>
> -Justin
>
>
>
> *From:* Christopher Young [mailto:mexigaba...@gmail.com]
> *Sent:* Monday, May 11, 2015 8:23 AM
> *To:* zenloadbalancer-support@lists.sourceforge.net
> *Subject:* [Zenloadbalancer-support] Cluster Setup and a Question
>
>
>
> So, I have begun testing ZLB for use at my company in both a virtual and
> eventually physical environment. We are interested in the enterprise
> version, but are currently testing using the latest community edition.
>
>
>
> In any case, I'm having difficultly getting my cluster to work, though I
> believe I originally caused the issue in that I noticed that somehow I had
> assigned the same IP to the hosts. I corrected this in the zen
> configuration and all interfaces seem to function fine now, however I can
> not get the cluster to give a positive global status even though all
> communication tests that I've done indicate that there shouldn't be an
> issue.
>
>
>
> Is there a good procedure that I could use to wipe out the configuration
> completely and start from scratch without having to force an OS
> reinstallation (I'm trying to keep my farms configuration if possible)?
>
>
>
> Also, I'm interested in managing the system via something like Ansible if
> possible. In particular, I'd like to be able to enable/disable hosts/IPs
> in a farm/pool as part of maintenance plans. I was wondering if there
> exists (or planned) a command line API or otherwise that could be used to
> perform common functions like that. If not, I'd love to see that
> functionality even if it is rather raw via a command-line tool that I could
> execute on the system.
>
>
>
> Thanks for all of your work!
>
>
>
> Chris
>
>
>
>
>
>
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