Node and Operating System

The Node Dashboard pane provides detailed visibility into the health and performance of individual nodes that run MariaDB Server and MaxScale. It combines uptime, system capacity, operating system details, and hardware utilization with disk and network activity. This view helps administrators ensure each node has sufficient resources and can support the workloads running on it.

Node Information

Provides a high-level, at-a-glance summary of a specific server node's status, configuration, and capacity.

Metric	Description
Node Uptime	Shows the total amount of time the server node has been running since its last restart.
Topology Info	Displays the node's current role or state within its database topology (e.g., Primary, Replica).
Node Allocatable Capacity	Details the compute resources allocated to the node, such as the number of CPU cores available.
Node Disk Capacity	Shows the total size of the key mounted filesystems, such as /boot and /home.
OS Info	Provides details about the node's OS, including architecture, distribution (e.g., CentOS Stream 9), and kernel release.

Node System Information

Tracks memory usage, CPU performance, system load, and resource consumption at the process level.

Metric	Description
Memory Usage	Percentage of physical memory in use.
CPU	Graph showing CPU usage distribution across user, system, idle, iowait, and kernel.
Memory Stack	Breakdown of memory allocation: applications, cache, buffers, swap, etc.
Network Traffic	Inbound and outbound network throughput per interface.
CPU Utilisation	Effective CPU usage and number of cores for the node.
System Load	Load averages for the last 1, 5, and 15 minutes.
File Descriptors	Current vs. maximum number of open file descriptors.
Filesystem Type	Table of filesystem types and mount points on the node.

Filesystem Section

Monitors disk performance and utilization for the node’s storage devices.

Metric	Description
Disk Throughput	Read and write throughput (bytes per second) per device.
Disk IOPS	Number of input/output operations per second for reads and writes.
Disk Utilisation	Percentage of time that disk devices are busy handling I/O requests.

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