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Portworx requires a minimum Linux kernel version of 3.10 or greater to operate properly. This requirement stems from Portworx's dependencies on certain kernel features and modules that became standard from kernel version 3.10 onwards. The kernel version affects support for device-mapper, overlay filesystems, network stack enhancements, and other low-level capabilities essential for Portworx's block storage functionality and performance. Although newer kernels (like 4.15+) offer additional features and improvements, Portworx maintains compatibility back to 3.10 to support a wide range of enterprise Linux distributions such as RHEL, CentOS, and Ubuntu LTS releases. The official Portworx system requirements document explicitly states kernel 3.10 as the minimum supported version to ensure stability and compatibility in production environments【Pure Storage Portworx System Requirements source】.

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When telemetry is enabled, Portworx deploys a telemetry pod on each node whose primary function is to collect diagnostic and performance data and securely upload it to Pure1, Pure Storage's cloud-based management and analytics platform. This pod gathers metrics such as resource utilization, error rates, and configuration changes, enabling proactive monitoring and predictive analytics. The data helps Pure1 provide customers with actionable insights, alerting, and automated support features, improving cluster reliability and reducing operational overhead. The telemetry pod does not directly monitor node health (which is the role of other components) nor manage network settings; its focus is on data collection and communication with Pure1. Official Portworx telemetry documentation highlights this pod as critical for enabling cloud-based health monitoring and customer support enhancements【Pure Storage Portworx Telemetry Guide source】.

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Portworx provides a mechanism to control KVDB pod placement through the kvdb.selector.matchNodeName field in the StorageCluster Custom Resource Definition (CRD). This allows administrators to explicitly specify node names where KVDB pods will be deployed. By setting this selector to include NODE01, NODE03, and NODE05, KVDB pods will run exclusively on these nodes, ensuring better control of quorum, fault tolerance, and performance. Node labeling alone is insufficient unless the labels are properly referenced in the spec, making direct node name matching the most straightforward and reliable method. This configuration must be done prior to cluster installation to ensure proper pod placement. Official Portworx documentation on cluster deployment and KVDB configuration confirms this method as the recommended best practice for managing KVDB nodes, critical for maintaining database availability and consistency within the Portworx cluster【Pure Storage Portworx Install Guide source】.

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During Portworx upgrades via the Kubernetes Operator, if the deployment uses a px-versions ConfigMap to manage available Portworx versions, the administrator must update the version manifest within this ConfigMap to include the new version. This update informs the Operator of the target version for upgrades and ensures that the correct container images are pulled and deployed. Simply creating a new namespace or deleting the ConfigMap is insufficient and can cause upgrade failures or inconsistent version deployments. The Portworx Operator upgrade documentation emphasizes updating the px-versions ConfigMap manifest as a necessary step in orchestrated upgrades, enabling controlled, predictable version management within Kubernetes clusters【Pure Storage Portworx Upgrade Guide source】.

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If a drive fails and the associated storage pool contains critical metadata, the safest and recommended action is to decommission the entire node. Metadata loss can compromise the integrity of volume allocations and cluster state. Decommissioning the node allows Portworx to safely remove the node from the cluster, replicate data, and redistribute workloads, preventing data loss or corruption. Deleting the pool or reformatting the disk without proper precautions risks losing metadata and causing cluster inconsistencies. Portworx's operational guidelines emphasize that nodes with failed drives holding metadata require careful decommissioning procedures to maintain cluster health and data durability, ensuring data is rebalanced and availability is preserved【Pure Storage Portworx Operations Guide source】.