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Planning and managing your cloud ecosystem and environments is important for decreasing 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 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 you 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 assist on IBM Cloud Kubernetes Service
IBM Cloud Kubernetes Service helps the Ubuntu OS and often strikes to newer Ubuntu variations. At present, the default OS for cluster employee nodes is Ubuntu20.
To keep away from disruptions to your workload, you might be liable for migrating your employee nodes to new OS variations as they change into accessible. IBM Cloud notifies customers of upcoming OS releases and deprecations a number of months upfront to present customers time to make any obligatory 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 need to contemplate the order through which you migrate your elements. Simply as we described for upgrading cluster variations, at all times begin the migration course of in your improvement surroundings, adopted by another pre-production environments. Check your providers alongside the way in which and tackle any points that come up earlier than making any adjustments in manufacturing. Then, if there aren’t any points, proceed the migration in your manufacturing surroundings.
Testing providers throughout OS migrations
Testing your providers all through the method is necessary for minimizing downtime from any points that will come up. Take into account 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, contemplate 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 in the event you encounter any points throughout testing. Once you decide that your workload is steady and features usually, you’ll be able to take away the unique employee swimming pools.
Wrap up
Protecting your employee node OS updated is necessary for conserving your Kubernetes setup working easily. When migrating your employee nodes, it’s necessary to work in a single surroundings 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 keep optimum consistency throughout your setup.
Study extra about IBM Cloud Kubernetes Service clusters
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