Updates label value to include units in metrics

This MR updates the y_label values and the label
values in common_metrics and cluster_metrics to
append the units of measurement to the labels.

changelogs/unreleased/59325-units-are-not-shown-on-the-performance-dashboard-2.yml

+---
+title: 'fix: updates to include units for the y axis label'
+merge_request: 30330
+author:
+type: fixed

config/prometheus/cluster_metrics.yml

@@ -2,12 +2,12 @@
   priority: 1
   metrics:
   - title: "CPU Usage"
-    y_label: "CPU"
+    y_label: "CPU (cores)"
     required_metrics: ['container_cpu_usage_seconds_total']
     weight: 1
     queries:
     - query_range: 'avg(sum(rate(container_cpu_usage_seconds_total{id="/"}[15m])) by (job)) without (job)'
-      label: Usage
+      label: Usage (cores)
       unit: "cores"
       appearance:
         line:
@@ -15,7 +15,7 @@
         area:
           opacity: 0
     - query_range: 'sum(kube_pod_container_resource_requests_cpu_cores{kubernetes_namespace="gitlab-managed-apps"})'
-      label: Requested
+      label: Requested (cores)
       unit: "cores"
       appearance:
         line:
@@ -23,7 +23,7 @@
         area:
           opacity: 0
     - query_range: 'sum(kube_node_status_capacity_cpu_cores{kubernetes_namespace="gitlab-managed-apps"})'
-      label: Capacity
+      label: Capacity (cores)
       unit: "cores"
       appearance:
         line:
@@ -32,12 +32,12 @@
         area:
           opacity: 0
   - title: "Memory usage"
-    y_label: "Memory"
+    y_label: "Memory (GiB)"
     required_metrics: ['container_memory_usage_bytes']
     weight: 1
     queries:
     - query_range: 'avg(sum(container_memory_usage_bytes{id="/"}) by (job)) without (job) / 2^30'
-      label: Usage
+      label: Usage (GiB)
       unit: "GiB"
       appearance:
         line:
@@ -45,7 +45,7 @@
         area:
           opacity: 0
     - query_range: 'sum(kube_pod_container_resource_requests_memory_bytes{kubernetes_namespace="gitlab-managed-apps"})/2^30'
-      label: Requested
+      label: Requested (GiB)
       unit: "GiB"
       appearance:
         line:
@@ -53,7 +53,7 @@
         area:
           opacity: 0
     - query_range: 'sum(kube_node_status_capacity_memory_bytes{kubernetes_namespace="gitlab-managed-apps"})/2^30'
-      label: Capacity
+      label: Capacity (GiB)
       unit: "GiB"
       appearance:
         line:

config/prometheus/common_metrics.yml

@@ -21,16 +21,16 @@ panel_groups:
     metrics:
     - id: response_metrics_nginx_ingress_latency_pod_average
       query_range: 'avg(nginx_upstream_response_msecs_avg{upstream=~"%{kube_namespace}-%{ci_environment_slug}-.*"})'
-      label: Pod average
+      label: Pod average (ms)
       unit: ms
   - title: "HTTP Error Rate"
     type: "area-chart"
-    y_label: "HTTP Errors"
+    y_label: "HTTP Errors (%)"
     weight: 1
     metrics:
     - id: response_metrics_nginx_ingress_http_error_rate
       query_range: 'sum(rate(nginx_upstream_responses_total{status_code="5xx", upstream=~"%{kube_namespace}-%{ci_environment_slug}-.*"}[2m])) / sum(rate(nginx_upstream_responses_total{upstream=~"%{kube_namespace}-%{ci_environment_slug}-.*"}[2m])) * 100'
-      label: 5xx Errors
+      label: 5xx Errors (%)
       unit: "%"
 # NGINX Ingress metrics for post-0.16.0 versions
 - group: Response metrics (NGINX Ingress)
@@ -52,16 +52,16 @@ panel_groups:
     metrics:
     - id: response_metrics_nginx_ingress_16_latency_pod_average
       query_range: 'sum(rate(nginx_ingress_controller_ingress_upstream_latency_seconds_sum{namespace="%{kube_namespace}",ingress=~".*%{ci_environment_slug}.*"}[2m])) / sum(rate(nginx_ingress_controller_ingress_upstream_latency_seconds_count{namespace="%{kube_namespace}",ingress=~".*%{ci_environment_slug}.*"}[2m])) * 1000'
-      label: Pod average
+      label: Pod average (ms)
       unit: ms
   - title: "HTTP Error Rate"
     type: "area-chart"
-    y_label: "HTTP Errors"
+    y_label: "HTTP Errors (%)"
     weight: 1
     metrics:
     - id: response_metrics_nginx_ingress_16_http_error_rate
       query_range: 'sum(rate(nginx_ingress_controller_requests{status=~"5.*",namespace="%{kube_namespace}",ingress=~".*%{ci_environment_slug}.*"}[2m])) / sum(rate(nginx_ingress_controller_requests{namespace="%{kube_namespace}",ingress=~".*%{ci_environment_slug}.*"}[2m])) * 100'
-      label: 5xx Errors
+      label: 5xx Errors (%)
       unit: "%"
 - group: Response metrics (HA Proxy)
   priority: 10
@@ -82,7 +82,7 @@ panel_groups:
     metrics:
     - id: response_metrics_ha_proxy_http_error_rate
       query_range: 'sum(rate(haproxy_frontend_http_responses_total{code="5xx",%{environment_filter}}[2m])) / sum(rate(haproxy_frontend_http_responses_total{%{environment_filter}}[2m]))'
-      label: HTTP Errors
+      label: HTTP Errors (%)
       unit: "%"
 - group: Response metrics (AWS ELB)
   priority: 10
@@ -94,7 +94,7 @@ panel_groups:
     metrics:
     - id: response_metrics_aws_elb_throughput_requests
       query_range: 'sum(aws_elb_request_count_sum{%{environment_filter}}) / 60'
-      label: Total
+      label: Total (req/sec)
       unit: req / sec
   - title: "Latency"
     type: "area-chart"
@@ -103,7 +103,7 @@ panel_groups:
     metrics:
     - id: response_metrics_aws_elb_latency_average
       query_range: 'avg(aws_elb_latency_average{%{environment_filter}}) * 1000'
-      label: Average
+      label: Average (ms)
       unit: ms
   - title: "HTTP Error Rate"
     type: "area-chart"
@@ -112,7 +112,7 @@ panel_groups:
     metrics:
     - id: response_metrics_aws_elb_http_error_rate
       query_range: 'sum(aws_elb_httpcode_backend_5_xx_sum{%{environment_filter}}) / sum(aws_elb_request_count_sum{%{environment_filter}})'
-      label: HTTP Errors
+      label: HTTP Errors (%)
       unit: "%"
 - group: Response metrics (NGINX)
   priority: 10
@@ -133,9 +133,9 @@ panel_groups:
     metrics:
     - id: response_metrics_nginx_latency
       query_range: 'avg(nginx_server_requestMsec{%{environment_filter}})'
-      label: Upstream
+      label: Upstream (ms)
       unit: ms
-  - title: "HTTP Error Rate"
+  - title: "HTTP Error Rate (Errors / Sec)"
     type: "area-chart"
     y_label: "HTTP 500 Errors / Sec"
     weight: 1
@@ -149,12 +149,12 @@ panel_groups:
   panels:
   - title: "Memory Usage (Total)"
     type: "area-chart"
-    y_label: "Total Memory Used"
+    y_label: "Total Memory Used (GB)"
     weight: 4
     metrics:
     - id: system_metrics_kubernetes_container_memory_total
       query_range: 'avg(sum(container_memory_usage_bytes{container_name!="POD",pod_name=~"^%{ci_environment_slug}-(.*)",namespace="%{kube_namespace}"}) by (job)) without (job)  /1024/1024/1024'
-      label: Total
+      label: Total (GB)
       unit: GB
   - title: "Core Usage (Total)"
     type: "area-chart"
@@ -163,25 +163,25 @@ panel_groups:
     metrics:
     - id: system_metrics_kubernetes_container_cores_total
       query_range: 'avg(sum(rate(container_cpu_usage_seconds_total{container_name!="POD",pod_name=~"^%{ci_environment_slug}-(.*)",namespace="%{kube_namespace}"}[15m])) by (job)) without (job)'
-      label: Total
+      label: Total (cores)
       unit: "cores"
   - title: "Memory Usage (Pod average)"
     type: "area-chart"
-    y_label: "Memory Used per Pod"
+    y_label: "Memory Used per Pod (MB)"
     weight: 2
     metrics:
     - id: system_metrics_kubernetes_container_memory_average
       query_range: 'avg(sum(container_memory_usage_bytes{container_name!="POD",pod_name=~"^%{ci_environment_slug}-([^c].*|c([^a]|a([^n]|n([^a]|a([^r]|r[^y])))).*|)-(.*)",namespace="%{kube_namespace}"}) by (job)) without (job) / count(avg(container_memory_usage_bytes{container_name!="POD",pod_name=~"^%{ci_environment_slug}-([^c].*|c([^a]|a([^n]|n([^a]|a([^r]|r[^y])))).*|)-(.*)",namespace="%{kube_namespace}"}) without (job)) /1024/1024'
-      label: Pod average
+      label: Pod average (MB)
       unit: MB
   - title: "Canary: Memory Usage (Pod Average)"
     type: "area-chart"
-    y_label: "Memory Used per Pod"
+    y_label: "Memory Used per Pod (MB)"
     weight: 2
     metrics:
     - id: system_metrics_kubernetes_container_memory_average_canary
       query_range: 'avg(sum(container_memory_usage_bytes{container_name!="POD",pod_name=~"^%{ci_environment_slug}-canary-(.*)",namespace="%{kube_namespace}"}) by (job)) without (job) / count(avg(container_memory_usage_bytes{container_name!="POD",pod_name=~"^%{ci_environment_slug}-canary-(.*)",namespace="%{kube_namespace}"}) without (job)) /1024/1024'
-      label: Pod average
+      label: Pod average (MB)
       unit: MB
       track: canary
   - title: "Core Usage (Pod Average)"
@@ -191,7 +191,7 @@ panel_groups:
     metrics:
     - id: system_metrics_kubernetes_container_core_usage
       query_range: 'avg(sum(rate(container_cpu_usage_seconds_total{container_name!="POD",pod_name=~"^%{ci_environment_slug}-([^c].*|c([^a]|a([^n]|n([^a]|a([^r]|r[^y])))).*|)-(.*)",namespace="%{kube_namespace}"}[15m])) by (job)) without (job) / count(sum(rate(container_cpu_usage_seconds_total{container_name!="POD",pod_name=~"^%{ci_environment_slug}-([^c].*|c([^a]|a([^n]|n([^a]|a([^r]|r[^y])))).*|)-(.*)",namespace="%{kube_namespace}"}[15m])) by (pod_name))'
-      label: Pod average
+      label: Pod average (cores)
       unit: "cores"
   - title: "Canary: Core Usage (Pod Average)"
     type: "area-chart"
@@ -200,7 +200,7 @@ panel_groups:
     metrics:
     - id: system_metrics_kubernetes_container_core_usage_canary
       query_range: 'avg(sum(rate(container_cpu_usage_seconds_total{container_name!="POD",pod_name=~"^%{ci_environment_slug}-canary-(.*)",namespace="%{kube_namespace}"}[15m])) by (job)) without (job) / count(sum(rate(container_cpu_usage_seconds_total{container_name!="POD",pod_name=~"^%{ci_environment_slug}-canary-(.*)",namespace="%{kube_namespace}"}[15m])) by (pod_name))'
-      label: Pod average
+      label: Pod average (cores)
       unit: "cores"
       track: canary
   - title: "Knative function invocations"

db/migrate/20190709220014_import_common_metrics_y_axis.rb

+# frozen_string_literal: true
+
+class ImportCommonMetricsYAxis < ActiveRecord::Migration[5.1]
+  DOWNTIME = false
+
+  def up
+    ::Gitlab::DatabaseImporters::CommonMetrics::Importer.new.execute
+  end
+
+  def down
+    # no-op
+  end
+end