https://theithollow.com/tags/fluentd/ Recent content in Fluentd on The IT Hollow Hugo en-us Tue, 13 Aug 2019 14:10:04 +0000 https://theithollow.com/2019/08/13/kubernetes-daemonsets/ Tue, 13 Aug 2019 14:10:04 +0000 https://theithollow.com/2019/08/13/kubernetes-daemonsets/ <p>DaemonSets can be a really useful tool for managing the health and operation of the pods within a Kubernetes cluster. In this post we&rsquo;ll explore a use case for a DaemonSet, why we need them, and an example in the lab.</p> <h2 id="daemonsets---the-theory">DaemonSets - The Theory</h2> <p>DaemonSets are actually pretty easy to explain. A DaemonSet is a Kubernetes construct that ensures a pod is running on every node (where eligible) in a cluster. This means that if we were to create a DaemonSet on our six node cluster (3 master, 3 workers), the DaemonSet would schedule the defined pods on each of the nodes for a total of six pods. Now, this assumes there are either no <a href="https://theithollow.com/?p=9736">taints on the nodes, or there are tolerations</a> on the DaemonSets.</p>