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Planning and managing your cloud ecosystem and environments is crucial for lowering manufacturing downtime and sustaining a functioning workload. Within the “Managing your cloud ecosystems” weblog sequence, we cowl totally different methods for guaranteeing that your setup features 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. When 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 assist on IBM Cloud Kubernetes Service
IBM Cloud Kubernetes Service helps the Ubuntu OS and usually strikes to newer Ubuntu variations. Presently, the default OS for cluster employee nodes is Ubuntu20.
To keep away from disruptions to your workload, you’re liable for migrating your employee nodes to new OS variations as they turn out 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 vital preparations.
Greatest 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, you must think about the order by which you migrate your parts. Simply as we described for upgrading cluster versions, all the time begin the migration course of in your growth setting, adopted by another pre-production environments. Take a look at your companies alongside the best way and tackle 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 companies throughout OS migrations
Testing your companies all through the method is vital for minimizing downtime from any points that will come up. Needless to say 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 holding 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 in the event you encounter any points throughout testing. While you decide that your workload is steady and features usually, you’ll be able to take away the unique employee swimming pools.
Wrap up
Preserving your employee node OS updated is vital for holding your Kubernetes setup working easily. When migrating your employee nodes, it’s vital to work in a single setting at a time and to go away loads of alternative for testing at every step.
In our subsequent and closing weblog entry for this sequence, we’ll focus on how one can keep optimum consistency throughout your setup.
Learn more about IBM Cloud Kubernetes Service clusters
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