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 totally 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 assist on IBM Cloud Kubernetes Service
IBM Cloud Kubernetes Service helps the Ubuntu OS and often 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 turn into accessible. IBM Cloud notifies customers of upcoming OS releases and deprecations a number of months upfront to provide customers time to make any mandatory 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 during which you migrate your elements. Simply as we described for upgrading cluster versions, all the time begin the migration course of in your growth setting, adopted by some other pre-production environments. Take a look at your providers alongside the best way and deal with any points that come up earlier than making any modifications 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 necessary for minimizing downtime from any points which 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 holding them for a number of days earlier than you take away them. This fashion, you possibly can scale the unique employee pool again up in case your workload experiences disruptions or in case you encounter any points throughout testing. While you decide that your workload is steady and capabilities usually, you possibly can take away the unique employee swimming pools.
Wrap up
Conserving your employee node OS updated is necessary for holding your Kubernetes setup operating easily. When migrating your employee nodes, it’s necessary to work in a single setting at a time and to depart 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 preserve optimum consistency throughout your setup.
Learn more about IBM Cloud Kubernetes Service clusters
