Virtual Appliance nitpicking and vMA optimizations

Unfortunately, most virtual appliances, including those distributed by VMware are not quite well-maintained. Nitpicking incoming.

This starts with them being released in the old, ESX3.x compatible vHardware version 4. Backwards compatibility is cool and all, but I suppose they could have at least jumped on the v7 wagon with the release of vSphere5 (and HW v8).

Another thing I dislike is the frequent use of the Open VMTools. Now don’t get me wrong, I usually love open source implementations, but the problem with the Open VMTools is that you lose the ability of quickly being able to check if a guest’s tools are up-to-date on a given host.

Instead of a clear “Current” or “Out of date” message, you’re simply greeted with an ambigious “Running/3rd Party Independant” or “Unmanaged” for the VMs.
You also can’t simply upgrade the Open VMTools via the vSphere easy Install/Upgrade VMTools wizards or via Update Manager.

Virtual Appliances want to be operated in a fire&forgot approach. After swiftly deploying them, you’re supposed to just use them for what they were intended to and don’t think about anything else you might have in mind when you deploy an ordinary OS in a VM. Updating a VA also often means deploying the whole new OVF package of the current version and deleting the old VM, even for minor version upgrades. Luckily this seems to slowly improve with built-in update functions. (It’s a shame VMware never made use of the vima-update functions back in the day.)

Besides these points theres always a handful of things to make me frown or chuckle, or sometimes both:

vi-admin@vma:~> cat /proc/cmdline
root=/dev/sda3 append server=10.18.58.17 serverdir=/build/.0/repo/iso resume=/dev/sda2 splash=silent showopts quit

Um, ok VMware, whatever floats your boat at 10.18.58.17.

 

A couple of things to make working with the vMA more convenient
Here are some things I would change on a freshly deployed vMA in order to make my life easier:

  • install GNU screen:
    yast2 -i screen
  • disable IPv6 which I don’t use in my environment:
    echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.conf ; sysctl -p
  • getting a list of all registered hosts at every login/screen window so i can quickly copy hostnames for use with my vicfg-*, esxcli etc. commands:
    echo "vifp listservers | sort" >> ~/.bashrc
  • fixing keybinding problems when connecting by SSH from my urxvt host for at least forward/backward words:
    ctrl-v ctrl-leftarrow and ctrl-v ctrl-rightarrow – fixing the .inputrc with "\eOd": backward-word and "\eOc": forward-word
  • creating a tiny script that lets me quickly open resxtop sessions to my commonly-named hosts without having to change the vifptarget every time, like “./resxtop.sh 0014”:
    #!/bin/bash

    resxtop –server esxhost$@.localdomain –user root
Advertisements