In order to improve our services we changed the way the Kubernetes nodepools are structured. Previously there was a default nodepool that had a mix of both Kubernetes add-ons and application deployments. This made things more complex than it needed to be. Therefore we created a dedicated system nodepool where all add-ons are scheduled on. During this change we also took a closer look at the requested resources for all add-ons and made adjustments where needed. For most of our customer environment we’ve been able to reduce the cluster size with at least 1 equivalent node. A handful are break-even for now, but we have further optimizations planned as follow-ups.
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We are rolling out AKS and EKS v1.26. This brings our supported AKS platforms to v1.26.3 and EKS to v1.26(.5). Please make sure to update to our recommended client versions matching this upgrade
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All Vault setups have been updated to the latest version 1.13.3. Please refer to the upstream changelogs to see what’s changed:
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We’re starting to gradually upgrade all our managed OpenSearch clusters to the latest supported version in Amazon OpenSearch Service (V2.5).
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We’ve upgraded all Teleport clusters from version 12.2.1 to 13.0.3. Teleport is a tool we mostly use internally to provide secure and auditted access to (EC2) instances, Kubernetes clusters and several dashboards. The nodes will gradually be upgraded to the new version when new instances are launched.
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During the past days we’ve had multiple customer reports that launching new Pods got stuck with the ContainerCreating status, mostly affecting CronJobs. Even if you were not directly affected, you might have noticed the messages in your channels that we’ve been rolling out a lot of node updates without prior notice. This small post mortem will explain the reason, what steps we took to mitigate, and what we should have done better.
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We have upgraded Fluent Bit form v2.0.1 to v2.1.3 and this is gradually rolling out to all our managed clusters.
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As part of our regular upgrade cycle, the following Kubernetes cluster components have been updated and our gradually rolling out to all our managed clusters.
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We’re updating the behavior of external-dns when managing records in private Route53 zones.
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As part of our regular upgrade cycle, the following Kubernetes cluster components have been updated and our gradually rolling out to all our managed clusters.
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We have upgraded Istio on all clusters that use it. The version was upgraded from 1.16.3 to 1.16.4. These release mostly focuses on many security fixes, ranging from moderate to high. You can check the full release notes here. We’ve also upgraded Kiali to the latest version, 1.66.0 (changelog).
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We’ve upgraded all Teleport clusters from version to 12.2.1. Teleport is a tool we mostly use internally to provide secure and auditted access to (EC2) instances, Kubernetes clusters and several dashboards. The nodes will gradually be upgraded to the new version when new instances are launched.
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Most of our EKS clusters leverage Spot instances as a cost-efficient way to provide compute nodes. Historically we’ve been defaulting to the “lowest price” allocation strategy to maximize possible cost savings. However this can lead to quite some more interuptions than we want to tolerate and often a big inbalance between AZ spread if price pressure increases. Therefore we’ve updated our default to use a “capacity optimized” strategy instead for increased stability with (possibly) a marginal higher cost.
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Update 2023-05-04: All clusters have been upgraded to v1.25.
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As part of our regular upgrade cycle, the following EKS cluster components have been updated. We’ve already rolled these out to all non-production clusters. Production upgrades are scheduled to happen in the next few days during business hours. As usual, no workload interuptions are expected.
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We have made an update to the S3 buckets that are used to take external backups from our managed OpenSearch clusters.
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We have upgraded Istio on all clusters that use it. The version was upgraded from 1.16.1 to 1.16.3. These releases contain bug fixes to improve robustness and security fixes in the underlying Go packages. You can check the full release notes here. We’ve also upgraded Kiali to the latest version, 1.64.0 (changelog).
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All Vault setups have been updated to the latest version 1.13.0. Please refer to the upstream changelogs to see what’s changed:
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We noticed that some of our customers are having questions about the error messages they’re getting when deploying their workload using helm and/or using kubectl:
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After deploying our Grafana Loki refactor, several issues started popping up, cascading to a loss of logs for a maximum of 12 hours on 22/02 or 23/02. All environments using Loki as main logging provider were affected. Environments logging to other systems like CloudWatch Logs and ElasticSearch were not affected.
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