Planning and managing your cloud ecosystem and environments is important for lowering manufacturing downtime and sustaining a functioning workload. Within the “Managing your cloud ecosystems” weblog collection, we cowl completely different methods for making certain that your setup capabilities easily with minimal downtime.
Within the third weblog of the collection, we’re discussing migrating your employee nodes to a brand new Ubuntu working system. Should you haven’t already, be sure to additionally take a look at our earlier entries on making certain workload continuity throughout employee node upgrades and upgrading your cluster to a brand new model.
OS help on IBM Cloud Kubernetes Service
IBM Cloud Kubernetes Service helps the Ubuntu OS and frequently strikes to newer Ubuntu variations. At the moment, the default OS for cluster employee nodes is Ubuntu20.
To keep away from disruptions to your workload, you’re answerable for migrating your employee nodes to new OS variations as they grow to be out there. IBM Cloud notifies customers of upcoming OS releases and deprecations a number of months upfront to provide customers time to make any mandatory preparations.
Greatest practices for migrating
The steps emigrate to a brand new OS are discovered within the IBM Cloud Kubernetes Service documentation. Nevertheless, earlier than you start, you must think about the order by which you migrate your elements. Simply as we described for upgrading cluster variations, all the time begin the migration course of in your growth setting, adopted by another pre-production environments. Check your providers alongside the best way and handle any points that come up earlier than making any modifications in manufacturing. Then, if there aren’t any points, proceed the migration in your manufacturing setting.
Testing providers throughout OS migrations
Testing your providers all through the method is vital for minimizing downtime from any points which will come up. Remember the fact that the steps for migrating to a brand new OS contain creating new employee swimming pools that populate with employee nodes on the newest model after which deleting the unique employee swimming pools. Earlier than deleting the unique employee swimming pools, think about scaling them down and preserving them for a number of days earlier than you take away them. This fashion, you’ll be able to scale the unique employee pool again up in case your workload experiences disruptions or when you encounter any points throughout testing. Whenever you decide that your workload is secure and capabilities usually, you’ll be able to take away the unique employee swimming pools.
Wrap up
Holding your employee node OS updated is vital for preserving your Kubernetes setup operating easily. When migrating your employee nodes, it’s vital to work in a single setting at a time and to depart loads of alternative for testing at every step.
In our subsequent and closing weblog entry for this collection, we’ll talk about how one can preserve optimum consistency throughout your setup.
Study extra about IBM Cloud Kubernetes Service clusters
