Analyze Verrazzano Clusters

Use the Verrazzano analysis tools to analyze clusters and cluster snapshots

Verrazzano provides the vz analyze command-line tool, which assists in troubleshooting issues in your environment. You can use it to analyze a cluster as well as, to analyze a cluster snapshot captured by the vz bug-report tool. For detailed information about vz bug-report, see here.

The vz analyze command-line tool analyzes the cluster or a cluster snapshot, reports the issues found, and prescribes related actions to take. Users, developers, and Continuous Integration (CI) can use this tooling to quickly identify the root cause of encountered problems, determine mitigation actions, and provide a sharable report with other users or tooling.

Set up the CLI tool

To set up the vz command-line tool, follow the steps here.

Analyze clusters

To analyze a Kubernetes cluster: 

$ vz analyze

Analyze cluster snapshots

  1. Use the vz bug-report tool to capture a cluster snapshot.

    To create a bug report in a TAR file named my-bug-report.tar.gz and extract it to a directory my-cluster-snapshot: 

    $ vz bug-report my-bug-report.tar.gz
  mkdir my-cluster-snapshot
  tar -xvf my-bug-report.tar.gz -C my-cluster-snapshot

  2. Use the vz analyze tool to analyze the cluster snapshot.

    To perform an analysis of the cluster snapshot under my-cluster-snapshot: 

    $ vz analyze --capture-dir my-cluster-snapshot

Use the vz analyze tool to analyze multiple snapshots

The vz analyze tool will find and analyze all cluster snapshot directories found under a specified root directory. This lets you create a directory to hold the cluster snapshots of related clusters in subdirectories, which the tool can then analyze.

For example:

my-cluster-snapshots
    CAPTURE_DIR-1
        cluster-snapshot
            ...
    CAPTURE_DIR-2
        cluster-snapshot
            ...

To perform an analysis of the clusters under my-cluster-snapshots: 

$ vz analyze --capture-dir my-cluster-snapshots

Usage information

Use the following syntax to run vz commands from your terminal window.

$ vz analyze [flags]

Available options

Command Definition
--capture-dir string Directory holding the captured data.
-h, --help Help for the vz analyze command.
--report-file string Name of the report output file. (Default stdout)
--report-format string The format of the report output. Valid report formats are “summary” and “detailed”. (Default “summary”)
-v, --verbose Enable verbose output.

Available flags

These flags apply to all the commands.

Flag Definition
--context string The name of the kubeconfig file context to use.
--kubeconfig string Path to the kubeconfig file to use.