Observability

    The Observability addon provides system-level monitoring for KubeVela core and business-level monitoring for applications based on metrics, logging, and tracing data.

    The following describes observability capabilities in detail, and how to enable the observability addon and view various monitoring data.

    KubeVela observable capabilities are demonstrated through Grafana and provide system-level and application-level data monitoring.

    • KubeVela Core resource usage monitoring

    1) CPU, memory, and other usage and utilization data

    2) Graphical representation of CPU and memory usage and utilization over time (e.g. last three hours), and network bandwidth per second

    Observability - 图2

    Built-in metrics category II: KubeVela Core log monitoring

    1) Log statistics

    It also shows the total number and frequency, of error log occurrences over time.

    Observability - 图4

    2) Logging filter

    You can also filter the logs by filling keywords at the top.

    The observability addon is experimental, Experimental Addon Registry should be enabled first. The addon relies on Prometheus, and Prometheus alert manager, and server depend on PersistentVolume. So the size of PV has to be set, ie, the parameter in the command line vela addon enable observability, and the default value is 20GB. It also depends on StorageClass, so one default Storage has to be set.

    Execute the following command to install the observability plugin. The steps are the same for similar clusters, like KinD.

    Kubernetes clusters provided by cloud providers

    Alibaba Cloud ACK

    Enable the addon and use the default StorageClass size 20GB.

    Kubernetes clusters offered by other cloud providers

    Please set the default StorageClass and for different cloud provider’s Kubernetes clusters.

    Using username admin and the password above to login to the monitoring dashboard below.

    Get the monitoring url

    • Self-built/regular clusters

    Visit the Dashboard in the browser tab, which was opened by the command line, to view the various monitoring data introduced earlier.

    Observability - 图6

    Access the Grafana domain set up above directly to view the various monitoring data described earlier.

    On the Grafana home page, click on the console as shown to access the monitoring data for the appropriate category.

    The KubeVela Core System Monitoring Dashboard is the KubeVela Core system-level monitoring console. The KubeVela Core Logging Dashboard is the KubeVela Core logging monitoring console.