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 collection, we cowl completely different methods for making certain that your setup features 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. If you happen to haven’t already, be sure you 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 commonly 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 might be accountable for migrating your employee nodes to new OS variations as they develop into out there. IBM Cloud notifies customers of upcoming OS releases and deprecations a number of months upfront to present customers time to make any mandatory preparations.
Finest 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 take into account the order wherein you migrate your parts. Simply as we described for upgrading cluster versions, at all times begin the migration course of in your growth setting, adopted by every other pre-production environments. Take a look at your providers alongside the best way and tackle any points that come up earlier than making any adjustments in manufacturing. Then, if there are not 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. 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, take into account scaling them down and preserving 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 when you encounter any points throughout testing. While you decide that your workload is secure and features usually, you may take away the unique employee swimming pools.
Conserving your employee node OS updated is vital for preserving 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 last weblog entry for this collection, we’ll talk about how one can preserve optimum consistency throughout your setup.