dcos-diagnostics is a monitoring agent which exposes a HTTP API for querying from the /system/health/v1 DC/OS api. dcos-diagnostics puller collects the data from agents and represents individual node health for things like system resources as well as DC/OS-specific services.

go get github.com/dcos/dcos-diagnostics
cd $GOPATH/src/github.com/dcos/dcos-diagnostics
make install
./dcos-diagnostics --version

Run dcos-diagnostics once, on a DC/OS host to check systemd units:

dcos-diagnostics --diag

Get verbose log output:

dcos-diagnostics --diag --verbose

Run the dcos-diagnostics aggregation service to query all cluster hosts for health state:

dcos-diagnostics daemon --pull

Start the dcos-diagnostics health API endpoint:

dcos-diagnostics daemon

--agent-port int
    Use TCP port to connect to agents. (default 1050)

--ca-cert string
    Use certificate authority.

--command-exec-timeout int
    Set command executing timeout (default 120)

--diag
    Get diagnostics output once on the CLI. Does not expose API.

--diagnostics-bundle-dir string
    Set a path to store diagnostic bundles (default "/var/run/dcos/dcos-diagnostics/diagnostic_bundles")

--diagnostics-job-timeout int
    Set a global diagnostics job timeout (default 720)

--diagnostics-units-since string
    Collect systemd units logs since (default "24 hours ago")

--diagnostics-url-timeout int
    Set a local timeout for every single GET request to a log endpoint (default 2)

--endpoint-config string
    Use endpoints_config.json (default "/opt/mesosphere/endpoints_config.json")

--exhibitor-ip string
    Use Exhibitor IP address to discover master nodes. (default "http://127.0.0.1:8181/exhibitor/v1/cluster/status")

--force-tls
    Use HTTPS to do all requests.

--health-update-interval int
    Set update health interval in seconds. (default 60)

--master-port int
    Use TCP port to connect to masters. (default 1050)

--port int
    Web server TCP port. (default 1050)

--pull
    Try to pull checks from DC/OS hosts.

--pull-interval int
    Set pull interval in seconds. (default 60)

--pull-timeout int
    Set pull timeout. (default 3)

--verbose
    Use verbose debug output.

--version
    Print version.

make test

Or from any submodule:

go test