Planning and managing your cloud ecosystem and environments is vital for lowering manufacturing downtime and sustaining a functioning workload. Within the “Managing your cloud ecosystems” weblog sequence, we cowl completely different methods for making certain that your setup capabilities easily with minimal downtime.
Within the third weblog of the sequence, we’re discussing migrating your employee nodes to a brand new Ubuntu working system. In case you haven’t already, be sure to additionally try our earlier entries on ensuring workload continuity during worker node upgrades and upgrading your cluster to a new version.
OS help on IBM Cloud Kubernetes Service
IBM Cloud Kubernetes Service helps the Ubuntu OS and usually 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 accountable for migrating your employee nodes to new OS variations as they turn out to be obtainable. IBM Cloud notifies customers of upcoming OS releases and deprecations a number of months upfront to present customers time to make any essential preparations.
Finest practices for migrating
The steps emigrate to a brand new OS are discovered within the IBM Cloud Kubernetes Service documentation. Nonetheless, earlier than you start, it’s best to take into account the order wherein you migrate your elements. Simply as we described for upgrading cluster versions, all the time begin the migration course of in your growth atmosphere, adopted by some other pre-production environments. Take a look at your companies alongside the best way and deal with 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 atmosphere.
Testing companies throughout OS migrations
Testing your companies 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, take into account scaling them down and conserving 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 should you encounter any points throughout testing. Once you decide that your workload is steady and capabilities usually, you’ll be able to take away the unique employee swimming pools.
Wrap up
Protecting your employee node OS updated is vital for conserving your Kubernetes setup operating easily. When migrating your employee nodes, it’s vital to work in a single atmosphere at a time and to go away loads of alternative for testing at every step.
In our subsequent and ultimate weblog entry for this sequence, we’ll focus on how one can preserve optimum consistency throughout your setup.
Learn more about IBM Cloud Kubernetes Service clusters
