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Kubernetes DaemonSets: Managing System-Level Components Across Every Node
- Kubernetes DaemonSets are used to manage the deployment of specific pods across all or particular nodes in a cluster.
- DaemonSets ensure that a copy of a particular pod is running on all nodes, which is useful for system-level components, agents, or services.
- Another use is running workloads such as networking services, logging agents, monitoring agents, or services that need to interact with the node.
- Key features include One pod per node dynamic scaling and node selection.
- DaemonSets support rolling updates and are ideal for managing system-level services like logging, monitoring, network proxies, and security agents.
- You define a DaemonSet using a YAML file that specifies the desired state of the pods.
- Common use cases include cluster-level logging, monitoring, security, network proxies, and system daemons.
- Best practices involve using DaemonSets for system-level components, defining resource requests and limits, considering node affinity, using taints and tolerations, and rolling updates.
- DaemonSets in Kubernetes are essential for managing system-level services and ensuring that each node has a copy of the pod, providing benefits like scaling, dynamic node addition, and automatic management of system daemons.
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