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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. Should you haven’t already, be sure to additionally take a look at 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 commonly 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 chargeable for migrating your employee nodes to new OS variations as they grow to be obtainable. IBM Cloud notifies customers of upcoming OS releases and deprecations a number of months upfront to provide customers time to make any essential 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 need to contemplate the order wherein you migrate your elements. Simply as we described for upgrading cluster versions, at all times begin the migration course of in your growth surroundings, adopted by every other pre-production environments. Check your providers alongside the way in which and handle 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 vital for minimizing downtime from any points which will come up. Remember 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 may scale the unique employee pool again up in case your workload experiences disruptions or for those who encounter any points throughout testing. If you decide that your workload is secure and capabilities usually, you may take away the unique employee swimming pools.
Wrap up
Maintaining your employee node OS updated is vital for conserving your Kubernetes setup working easily. When migrating your employee nodes, it’s vital 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 talk about how one can keep optimum consistency throughout your setup.
Learn more about IBM Cloud Kubernetes Service clusters
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