Patching Virtual Systems & New Patch Manager 3rd Party Updates
It’s been a while since we talked SolarWinds Patch Manager and patching in general here on the Product Blog, but with VMWorld 2015 right around the corner all things virtual are on our minds. Here’s a few quick considerations to make when thinking about patching and maintaining virtual systems.
IS PATCHING VIRTUAL (GUEST) SYSTEMS REALLY DIFFERENT? YES, AND NO.
At the most fundamental level, patching virtual guest systems isn’t really different than patching physical systems. You back the system up (hopefully), you install patches (which you tested first, right?), and if necessary, finish with a reboot. Seems simple enough, but there’s points along the way where we can really take advantage of virtual systems – and virtual systems can help back us up when we’re being lazy (or hasty).
- Backing up the system: here we can take advantage of the virtual environment’s ability to take snapshots, either by integration with our backup system, integration with our patching system, or by hand. Snapshots can really cover your assets when it comes to making a mistake, or if a patch has unintended consequences (not that vendors ever make a mistake, right?). If a system fails to come back after a patch or you need time to diagnose an issue, reverting to snapshot while you clone and re-test is much more simple than the old school "revert from a backup? sigh…" or relying on Windows’ ability to take reliable system restore points.
- Testing patches: with snapshots and a virtual environment (or even a hybrid or cloud environment), you can clone a live system into a testbed relatively easily. Gone are the days of drive imaging and system cloning, or having standby hardware in a test environment just because it’s identical to production. Now, you can clone a snapshot of a production system, tweak its network and VM configuration to move it over to your test environment, and install and test patches pretty easily.
- Installing and rebooting: while systems are patching and rebooting, virtual environment HA configurations can help plug some of the holes of down systems without dealing with operating system clustering technologies directly. Both can be admittedly cumbersome to set up the first time, but virtual HA can save your bacon and minimize impact to your downstream users.
Read the entire article here, Patching Virtual Systems & New Patch Manager 3rd Party Updates