Cluster View
A cluster view is generated based on metrics and Prometheus Query Language (PromQL) statements. It displays information about nodes, CPUs, memory, networks, and disks, so you can better monitor a cluster. The following describes cluster resources from two parts: metric description and metric list. In the resource diagrams, larger values in bytes can be converted to ones in MB, KB, or GB.
Metric Description
Cluster metrics include basic metrics, network metrics, and disk metrics. You can view these metrics in the following tables.
Metric |
Unit |
Description |
---|---|---|
Nodes |
N/A |
The number of nodes in a cluster. |
Nodes with Unavailable Disks |
N/A |
The number of nodes with unavailable disks in a cluster. |
Nodes Unavailable |
N/A |
The number of unready nodes in a cluster. |
CPU Usage |
% |
Total CPUs used by all containers/Total CPU limits in a cluster |
CPU Requests Commitment |
% |
Total CPU requests/Total CPU of the cluster |
CPU Limits Commitment |
% |
Total CPU limits/Total CPU of the cluster |
Memory Usage |
% |
Total memory used by all containers/Total memory limits in a cluster |
Memory Requests Commitment |
% |
Total memory requests/Total memory of the cluster |
Memory Limits Commitment |
% |
Total memory limits/Total memory of the cluster |
Pods |
N/A |
The number of pods in different states (Failed, Pending, Running, Succeeded, and Unknown) in a cluster. |
Containers |
N/A |
The number of containers in different states (Running, Waiting, and Terminated) in a cluster. |
Used CPU |
core |
Total CPUs used by all containers in each namespace. |
Used Memory |
byte |
Total memory used by all containers in each namespace. |
Metric |
Unit |
Description |
---|---|---|
Network Receive Rate |
byte/s |
Total number of bytes received by all containers in each namespace per second. |
Network Transmit Rate |
byte/s |
Total number of bytes sent by all containers in each namespace per second. |
Average Network Receive Rate |
byte/s |
Average number of bytes received by all containers in each namespace per second. |
Average Network Transmit Rate |
byte/s |
Average number of bytes sent by all containers in each namespace per second. |
Packet Receive Rate |
packet/s |
Total number of packets received by all containers in each namespace per second. |
Packet Transmit Rate |
packet/s |
Total number of packets sent by all containers in each namespace per second. |
Packet Loss Rate (Receive) |
packet/s |
Total number of packets not received by all containers in each namespace per second. |
Packet Loss Rate (Transmit) |
packet/s |
Total number of packets sent from all containers but not received by the recipient in each namespace per second. |
Metric |
Unit |
Description |
---|---|---|
Disk I/O Rate (Read + Write) |
N/A |
Total number of read and write operations on the disk by all containers in each namespace per second. |
Disk Throughput (Read + Write) |
byte/s |
Total number of bytes read from and written to the disk by all containers in each namespace per second. |
Metric List
The following is the metric list of the cluster view.
Metric |
Type |
Description |
---|---|---|
kube_pod_container_resource_requests |
Gauge |
Resource requests of a container. |
kube_pod_container_resource_limits |
Gauge |
Resource limits of a container. |
kube_node_status_allocatable |
Gauge |
Resources allocatable on a node. |
kube_pod_status_phase |
Gauge |
The current phase of a pod. |
node_memory_MemAvailable_bytes |
Gauge |
The amount of memory available on a node. |
node_memory_MemTotal_bytes |
Gauge |
Cumulative count of bytes that can be consumed by a node. |
node_cpu_seconds_total |
Counter |
Seconds the CPUs spent in each mode. |
kube_node_info |
Gauge |
Node information. |
kube_node_status_condition |
Gauge |
Node status. |
kube_pod_container_status_waiting |
Gauge |
Whether the container is in the waiting state. |
kube_pod_container_status_terminated |
Gauge |
Whether the container is in the terminated state. |
container_cpu_usage_seconds_total |
Counter |
Cumulative CPU time consumed by a container, in seconds. |
container_memory_rss |
Gauge |
Resident set size (RSS), which is the amount of space of physical memory (RAM) held by a process. |
container_network_receive_bytes_total |
Counter |
Cumulative count of bytes received by a container. |
container_network_transmit_bytes_total |
Counter |
Cumulative count of bytes sent by a container. |
container_network_receive_packets_total |
Counter |
Cumulative count of packets received by a container. |
container_network_transmit_packets_total |
Counter |
Cumulative count of packets sent by a container. |
container_network_receive_packets_dropped_total |
Counter |
Cumulative count of packets not received by a container. |
container_network_transmit_packets_dropped_total |
Counter |
Cumulative count of packets sent from a container but not received by the recipient. |
container_fs_reads_total |
Counter |
Cumulative count of reads completed by a container. |
container_fs_reads_bytes_total |
Counter |
Cumulative count of bytes read by a container. |
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