Tag: allssh

Enabling Nutanix “Stargate” I/O statistics page access with allssh command, AOS 5.5 edition

Finally got my hands on AOS 5.5 and upgraded our lab Nutanix cluster to this version.

In my earlier post I described how to manipulate “iptables” rules to allow access to “Stargate” or “port 2009” pages. Stargate page contains lots of detailed information of I/O operations, more info in my earlier post. It seems that “iptables” configuration has changed in this version.

In versions prior AOS 5.5 “iptables” chain used was called “WORLDLIST”. In AOS 5.5 the name of the chain has changed to “MGMT_OPENFROMALL”. This requires changes in “iptables” commands used.

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Enabling Nutanix 2009 page access with allssh command, AOS 5.1 and older

On top of HTML5 based Prism GUI, Nutanix cluster has nifty web pages to give additional information on what is going on in your cluster. Under normal conditions there isn’t usually need to access these pages, but they can be handy in troubleshooting or in performance testing. By default these pages are not accessible, as they are firewalled with iptables rules. Example of such page is 2009 page, which contains information about I/O requests that process called “Stargate” handles.

Enabling access for a single Controller Virtual Machine (CVM)

You can allow access to these pages by modifying iptables rules per controller virtual machine (CVM) basis.

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