Nov
03

Acropolis Networking – Remove 1 Gb From The Bond

Every time a cluster gets destroyed for the next demo or next customer I find myself looking on the Nutanix Portal and searching how to remove 1 Gb nic from the default bond0. What alerts me to this call to action is the warning in Prism saying that the CVM is running on 1 Gb. This happens because IPMI use to be a requirement and there is a shared IPMI networking port. The default IPMI port is only 100 Mb on the older 3000 systems so you can use the shared port for IPMI which 1 Gb. The shared port will also serve other network from the hypervisor. I don’t really find to many customers using 1 Gb at all unless they are at robo site. A 10 Gb switch can be picked up for less than $5,000 bucks so price is usually not the issue but politics sure can be 🙂

If you log into anyone of the CVM’s you can quickly remove all of the 1 GB from the default bond.

Note: eth2 & eth3 are the 10 Gb links and eth1 & eth0 are the 1 Gb links.

Commands
manage_ovs show_uplinks -> shows which nics are in the bond for that host
manage_ovs –bond_name bond0 –interfaces 10g update_uplinks -> Only uses the 10 Gb uplinks for the bond
allssh manage_ovs –bond_name bond0 –interfaces 10g update_uplinks -> Adding the allssh to the command will run the command on all hosts in the cluster.


nutanix@NTNX-14SM15510075-A-CVM:10.20.27.29:~$ manage_ovs show_uplinks
Uplink ports: bond0
Uplink ifaces: eth3 eth2 eth1 eth0
nutanix@NTNX-14SM15510075-A-CVM:10.20.27.29:~$ manage_ovs --bond_name bond0 --interfaces 10g update_uplinks
2015-11-03 18:47:05 WARNING manage_ovs:298 Interface eth3 does not have link state
nutanix@NTNX-14SM15510075-A-CVM:10.20.27.29:~$ manage_ovs show_uplinks
Uplink ports: bond0
Uplink ifaces: eth3 eth2

allssh manage_ovs --bond_name bond0 --interfaces 10g update_uplinks
Executing manage_ovs --bond_name bond0 --interfaces 10g update_uplinks on the cluster
================== 10.20.27.29 =================
2015-11-03 18:49:27 WARNING manage_ovs:298 Interface eth3 does not have link state
================== 10.20.27.30 =================
2015-11-03 18:49:34 WARNING manage_ovs:298 Interface eth3 does not have link state
2015-11-03 18:49:34 INFO manage_ovs:341 Deleting OVS ports: bond0
2015-11-03 18:49:35 INFO manage_ovs:349 Adding bonded OVS ports: eth3 eth2
2015-11-03 18:49:37 INFO manage_ovs:411 Sending gratuitous ARPs for 10.20.27.26
================== 10.20.27.31 =================
2015-11-03 18:49:46 WARNING manage_ovs:298 Interface eth3 does not have link state
2015-11-03 18:49:46 INFO manage_ovs:341 Deleting OVS ports: bond0
2015-11-03 18:49:47 INFO manage_ovs:349 Adding bonded OVS ports: eth3 eth2
2015-11-03 18:49:49 INFO manage_ovs:411 Sending gratuitous ARPs for 10.20.27.27

Oct
28

AHV Best Practice Guide is Out. #NPX

This doc shows the true team work of Nutanix with multiple team members contributing to the paper. KVM based solutions tend to be scary when it comes to networking but this paper should put your mind to ease.

Other notable topics:

Oct
19

NPX: Not About The Paper

Certifications have always made me feel wishy washy if they’re worth the time spent in achieving them. I had lots of VMware certs including VCP-DT #10 which I was super proud of at the time. I was on the fence for a long time if I should go for NPX. There was a part of me that thought I should do it because I work at Nutanix and I should support it. The reality is there is lots of work to do for NPX and probably not the best thing if your heart isn’t in it. Without your own personal reasons it would really be too easy to toss in the towel. I thought from a skill set it would be great for me to sharpen some of the more consulting like skills and there is an abundance of resources to help me out too. What pushed me over the edge was an opportunity to design a new Acropolis Hypervisor environment and to learn more about KVM and networking which were not as sharp as my VMware skills.

It’s worth noting that I did fail my first attempt at the VCP-DCD so I knew this wasn’t going to be a walk in the park in addressing all of the requirements. Luckily I have both Josh Odgers and Lane Leverett to help out out when I have questions. Not to mention my team, Steve Poitras, aka Creator of the Nutanix Bible, Hyper-V guru, Mike Mcghee, Kevin Fernandez, CCIE and brand new member Design Artist, Brian Suhr. The great thing is all those people are a tweet away for anyone. Also just look at what Derek Seaman is doing for VCDX candidates below:

In deciding in selecting brown-field environment is great from the stand point that I don’t have to make anything up but it’s also brings in a lot of variables. A part of me wishes I would have found a brand new VMware View environment to stand up because of my background but I think once finished this will be pretty rewarding.

To me NPX is learning and strengthening skills and working together to achieve something great. I look forward to sharing what I learn here.

NPX Guidelines: http://go.nutanix.com/npx-application.html