How to use grafanalib - 10 common examples

title="Network tcp segments",
        targets=[
            g.Target(
                expr="sum(rate(node_netstat_Tcp_InSegs[1m])) by (instance)",
                legendFormat="InSegs {{instance}}",
            ),
            g.Target(
                expr="sum(rate(node_netstat_Tcp_OutSegs[1m])) by (instance)",
                legendFormat="OutSegs {{instance}}",
            ),
            g.Target(
                expr="sum(rate(node_netstat_Tcp_RetransSegs[1m])) by (instance)",
                legendFormat="RetransSegs {{instance}}",
            ),
        ],
        yAxes=g.single_y_axis(format=g.SHORT_FORMAT, logBase=10),
    ),
]

# The final dashboard must be named 'dashboard' so that grafanalib will find it.
dashboard = d.Dashboard(
    title="Master dashboard",
    refresh="",
    rows=[
        d.Row(title="API call latency", panels=API_CALL_LATENCY_PANELS),
        d.Row(title="API call latency aggregated with quantile", panels=QUANTILE_API_CALL_LATENCY_PANELS, collapse=True),
        d.Row(title="Overall cluster health", panels=HEALTH_PANELS, collapse=True),
        d.Row(title="etcd", panels=ETCD_PANELS, collapse=True),
        d.Row(title="kube-apiserver", panels=APISERVER_PANELS, collapse=True),
        d.Row(
            title="kube-controller-manager",
            panels=[

d.one_line(
            """
histogram_quantile(
  0.50,
  sum(
    rate(
      etcd_request_duration_seconds_bucket{
        operation=~"${etcd_operation:regex}",
        type=~".*(${etcd_type:pipe})"
      }[1m]
    )
  ) by (le, operation, type, instance)
)
"""
        ),
        yAxes=g.single_y_axis(format=g.SECONDS_FORMAT),
    ),
    d.simple_graph("etcd instance id", "sum(etcd_server_id) by (instance, server_id)"),
    d.simple_graph(
        "etcd network latency (99th percentile)",
        "histogram_quantile(0.99, sum(rate(etcd_network_peer_round_trip_time_seconds_bucket[1m])) by (le, instance, To))",
        yAxes=g.single_y_axis(format=g.SECONDS_FORMAT),
    ),
    d.simple_graph(
        "etcd compaction keys",
        "delta(etcd_debugging_mvcc_db_compaction_keys_total[1m])",
    ),
    d.simple_graph(
        "etcd compaction pause sum duration",
        "delta(etcd_debugging_mvcc_db_compaction_pause_duration_milliseconds_sum[1m])",
        yAxes=g.single_y_axis(format=g.MILLISECONDS_FORMAT),
    ),

],
        yAxes=g.single_y_axis(format=g.MILLISECONDS_FORMAT),
    ),
    d.simple_graph(
        "etcd objects",
        "sum(etcd_object_counts) by (resource, instance)",
        legend="{{instance}}: {{resource}}",
    ),
    d.simple_graph(
        "etcd db size",
        [
            "etcd_mvcc_db_total_size_in_bytes",
            "etcd_mvcc_db_total_size_in_use_in_bytes",
            "etcd_server_quota_backend_bytes",
        ],
        yAxes=g.single_y_axis(format=g.BYTES_FORMAT),
    ),
]

APISERVER_PANELS = [
    d.simple_graph(
        "goroutines",
        'go_goroutines{job="master", endpoint="apiserver"}',
        legend="{{instance}}",
    ),
    d.simple_graph(
        "gc rate",
        'rate(go_gc_duration_seconds_count{job="master", endpoint="apiserver"}[1m])',
        legend="{{instance}}",
    ),
    d.simple_graph(
        "alloc rate",

),
    d.simple_graph(
        "etcd wal fsync duration",
        "histogram_quantile(1.0, sum(rate(etcd_disk_wal_fsync_duration_seconds_bucket[1m])) by (le, endpoint))",
        yAxes=g.single_y_axis(format=g.SECONDS_FORMAT),
    ),
    d.Graph(
        title="etcd compaction max pause",
        points=True,
        lines=False,
        targets=[
            g.Target(
                expr="histogram_quantile(1.0, sum(rate(etcd_debugging_mvcc_db_compaction_pause_duration_milliseconds_bucket[1m])) by (le, instance))"
            )
        ],
        yAxes=g.single_y_axis(format=g.MILLISECONDS_FORMAT),
    ),
    d.simple_graph(
        "etcd objects",
        "sum(etcd_object_counts) by (resource, instance)",
        legend="{{instance}}: {{resource}}",
    ),
    d.simple_graph(
        "etcd db size",
        [
            "etcd_mvcc_db_total_size_in_bytes",
            "etcd_mvcc_db_total_size_in_use_in_bytes",
            "etcd_server_quota_backend_bytes",
        ],
        yAxes=g.single_y_axis(format=g.BYTES_FORMAT),
    ),
]

def api_call_latency(title, metric, verb, scope, threshold):
    return d.Graph(
        title=title,
        targets=[
            g.Target(expr=str(threshold), legendFormat="threshold"),
            g.Target(
                expr='quantile_over_time(0.99, %(metric)s{quantile="0.99", verb=~"%(verb)s", scope=~"%(scope)s"}[12h])'
                % {"metric": metric, "verb": verb, "scope": scope}
            ),
        ],
        yAxes=g.single_y_axis(format=g.SECONDS_FORMAT),
    )

),
    d.simple_graph(
        "Component restarts 2",
        'sum(min_over_time(container_start_time_seconds{container!="",container!="POD"}[2m])) by (container)',
    ),
    d.simple_graph(
        "Active component", "sum(leader_election_master_status) by (name, instance)"
    ),
]

ETCD_PANELS = [
    d.simple_graph("etcd leader", "etcd_server_is_leader", legend="{{instance}}"),
    d.simple_graph(
        "etcd bytes sent",
        "rate(etcd_network_client_grpc_sent_bytes_total[1m])",
        yAxes=g.single_y_axis(format=g.BYTES_PER_SEC_FORMAT),
        legend="{{instance}}",
    ),
    d.simple_graph(
        "etcd operations rate",
        d.one_line(
            """
sum(
  rate(
    etcd_request_duration_seconds_count{
      operation=~"${etcd_operation:regex}",
      type=~".*(${etcd_type:pipe})"
    }[1m]
  )
) by (operation, type)
"""
        ),

def api_call_latency(title, verb, scope, threshold):
        return d.Graph(
            title=title,
            targets=[
                g.Target(expr=str(threshold), legendFormat="threshold"),
                g.Target(
                    expr=d.one_line(expression % {"verb": verb, "scope": scope}
                                    ),
                    # TODO(github.com/grafana/grafana/issues/19410): uncomment once fixed
                    # legendFormat="{{verb}} {{scope}}/{{resource}}",
                ),
            ],
            yAxes=g.single_y_axis(format=g.SECONDS_FORMAT),
        )

def show_quantiles(queryTemplate, quantiles=None, legend=""):
    quantiles = quantiles or QUANTILES
    targets = []
    for quantile in quantiles:
        q = "{:.2f}".format(quantile)
        l = legend or q
        targets.append(g.Target(expr=queryTemplate.format(quantile=q), legendFormat=l))
    return targets

def api_call_latency(title, verb, scope, threshold):
        return d.Graph(
            title=title,
            targets=[
                g.Target(expr=str(threshold), legendFormat="threshold"),
                g.Target(
                    expr=d.one_line(expression % {"verb": verb, "scope": scope}
                                    ),
                    # TODO(github.com/grafana/grafana/issues/19410): uncomment once fixed
                    # legendFormat="{{verb}} {{scope}}/{{resource}}",
                ),
            ],
            yAxes=g.single_y_axis(format=g.SECONDS_FORMAT),
        )

title="DNS latency",
        targets=d.show_quantiles(
            'probes:dns_lookup_latency:histogram_quantile{{quantile="{quantile}"}}',
            legend="{{quantile}}",
        ),
        yAxes=g.single_y_axis(format=g.SECONDS_FORMAT),
        nullPointMode="null",
    ),
    d.Graph(
        title="probe: lookup rate",
        targets=[
            g.Target(
                expr='sum(rate(probes_in_cluster_dns_lookup_count{namespace="probes", job="dns"}[1m]))',
                legendFormat="lookup rate",
            ),
            g.Target(
                expr='sum(rate(probes_in_cluster_network_latency_error{namespace="probes", job="dns"}[1m]))',
                legendFormat="error rate",
            ),
        ],
    ),
    d.Graph(
        title="probe: # running",
        targets=[
            d.Target(
                expr='count(container_memory_usage_bytes{namespace="probes", container="dns"}) by (container, namespace)'
            )
        ],
        nullPointMode="null",
    ),
    d.Graph(
        title="probe: memory usage",