KEDA(Kubernetes based Event Driven Autoscaler)

KEDA(Kubernetes based Event Driven Autoscaler)

KEDA AutoScaler 소개 - Docs DevOcean

• (업데이트 되기전) 기존의 HPA(Horizontal Pod Autoscaler)는 리소스(CPU, Memory) 메트릭을 기반으로 스케일 여부를 결정하게 됩니다
• 반면에 KEDA는 특정 이벤트를 기반으로 스케일 여부를 결정할 수 있습니다.
  • 예를 들어 airflow는 metadb를 통해 현재 실행 중이거나 대기 중인 task가 얼마나 존재하는지 알 수 있습니다.
  • 이러한 이벤트를 활용하여 worker의 scale을 결정한다면 queue에 task가 많이 추가되는 시점에 더 빠르게 확장할 수 있습니다.

https://keda.sh/docs/2.10/concepts/ALT

 

KEDA with Helm

keda-dashboard.json

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "grafana",
          "uid": "-- Grafana --"
        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "target": {
          "limit": 100,
          "matchAny": false,
          "tags": [],
          "type": "dashboard"
        },
        "type": "dashboard"
      }
    ]
  },
  "description": "Visualize metrics provided by KEDA",
  "editable": true,
  "fiscalYearStartMonth": 0,
  "graphTooltip": 0,
  "id": 1653,
  "links": [],
  "liveNow": false,
  "panels": [
    {
      "collapsed": false,
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 0
      },
      "id": 8,
      "panels": [],
      "title": "Metric Server",
      "type": "row"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "description": "The total number of errors encountered for all scalers.",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "axisCenteredZero": false,
            "axisColorMode": "text",
            "axisLabel": "",
            "axisPlacement": "auto",
            "barAlignment": 0,
            "drawStyle": "line",
            "fillOpacity": 25,
            "gradientMode": "opacity",
            "hideFrom": {
              "legend": false,
              "tooltip": false,
              "viz": false
            },
            "lineInterpolation": "linear",
            "lineWidth": 2,
            "pointSize": 5,
            "scaleDistribution": {
              "type": "linear"
            },
            "showPoints": "never",
            "spanNulls": true,
            "stacking": {
              "group": "A",
              "mode": "none"
            },
            "thresholdsStyle": {
              "mode": "off"
            }
          },
          "mappings": [],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          },
          "unit": "Errors/sec"
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "http-demo"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "red",
                  "mode": "fixed"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "scaledObject"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "red",
                  "mode": "fixed"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "keda-system/keda-operator-metrics-apiserver"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "red",
                  "mode": "fixed"
                }
              }
            ]
          }
        ]
      },
      "gridPos": {
        "h": 9,
        "w": 8,
        "x": 0,
        "y": 1
      },
      "id": 4,
      "options": {
        "legend": {
          "calcs": [],
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": true
        },
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "expr": "sum by(job) (rate(keda_scaler_errors{}[5m]))",
          "legendFormat": "{{ job }}",
          "range": true,
          "refId": "A"
        }
      ],
      "title": "Scaler Total Errors",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "description": "The number of errors that have occurred for each scaler.",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "axisCenteredZero": false,
            "axisColorMode": "text",
            "axisLabel": "",
            "axisPlacement": "auto",
            "barAlignment": 0,
            "drawStyle": "line",
            "fillOpacity": 25,
            "gradientMode": "opacity",
            "hideFrom": {
              "legend": false,
              "tooltip": false,
              "viz": false
            },
            "lineInterpolation": "linear",
            "lineWidth": 2,
            "pointSize": 5,
            "scaleDistribution": {
              "type": "linear"
            },
            "showPoints": "never",
            "spanNulls": true,
            "stacking": {
              "group": "A",
              "mode": "none"
            },
            "thresholdsStyle": {
              "mode": "off"
            }
          },
          "mappings": [],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          },
          "unit": "Errors/sec"
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "http-demo"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "red",
                  "mode": "fixed"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "scaler"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "red",
                  "mode": "fixed"
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "prometheusScaler"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "red",
                  "mode": "fixed"
                }
              }
            ]
          }
        ]
      },
      "gridPos": {
        "h": 9,
        "w": 8,
        "x": 8,
        "y": 1
      },
      "id": 3,
      "options": {
        "legend": {
          "calcs": [],
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": true
        },
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "expr": "sum by(scaler) (rate(keda_scaler_errors{exported_namespace=~\"$namespace\", scaledObject=~\"$scaledObject\", scaler=~\"$scaler\"}[5m]))",
          "legendFormat": "{{ scaler }}",
          "range": true,
          "refId": "A"
        }
      ],
      "title": "Scaler Errors",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "description": "The number of errors that have occurred for each scaled object.",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "axisCenteredZero": false,
            "axisColorMode": "text",
            "axisLabel": "",
            "axisPlacement": "auto",
            "barAlignment": 0,
            "drawStyle": "line",
            "fillOpacity": 25,
            "gradientMode": "opacity",
            "hideFrom": {
              "legend": false,
              "tooltip": false,
              "viz": false
            },
            "lineInterpolation": "linear",
            "lineWidth": 2,
            "pointSize": 5,
            "scaleDistribution": {
              "type": "linear"
            },
            "showPoints": "never",
            "spanNulls": true,
            "stacking": {
              "group": "A",
              "mode": "none"
            },
            "thresholdsStyle": {
              "mode": "off"
            }
          },
          "mappings": [],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          },
          "unit": "Errors/sec"
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "http-demo"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "red",
                  "mode": "fixed"
                }
              }
            ]
          }
        ]
      },
      "gridPos": {
        "h": 9,
        "w": 8,
        "x": 16,
        "y": 1
      },
      "id": 2,
      "options": {
        "legend": {
          "calcs": [],
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": true
        },
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "expr": "sum by(scaledObject) (rate(keda_scaled_object_errors{exported_namespace=~\"$namespace\", scaledObject=~\"$scaledObject\"}[5m]))",
          "legendFormat": "{{ scaledObject }}",
          "range": true,
          "refId": "A"
        }
      ],
      "title": "Scaled Object Errors",
      "type": "timeseries"
    },
    {
      "collapsed": false,
      "gridPos": {
        "h": 1,
        "w": 24,
        "x": 0,
        "y": 10
      },
      "id": 10,
      "panels": [],
      "title": "Scale Target",
      "type": "row"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "description": "The current value for each scaler’s metric that would be used by the HPA in computing the target average.",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "axisCenteredZero": false,
            "axisColorMode": "text",
            "axisLabel": "",
            "axisPlacement": "auto",
            "barAlignment": 0,
            "drawStyle": "line",
            "fillOpacity": 25,
            "gradientMode": "opacity",
            "hideFrom": {
              "legend": false,
              "tooltip": false,
              "viz": false
            },
            "lineInterpolation": "linear",
            "lineWidth": 2,
            "pointSize": 5,
            "scaleDistribution": {
              "type": "linear"
            },
            "showPoints": "never",
            "spanNulls": true,
            "stacking": {
              "group": "A",
              "mode": "none"
            },
            "thresholdsStyle": {
              "mode": "off"
            }
          },
          "mappings": [],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          },
          "unit": "none"
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "http-demo"
            },
            "properties": [
              {
                "id": "color",
                "value": {
                  "fixedColor": "blue",
                  "mode": "fixed"
                }
              }
            ]
          }
        ]
      },
      "gridPos": {
        "h": 9,
        "w": 24,
        "x": 0,
        "y": 11
      },
      "id": 5,
      "options": {
        "legend": {
          "calcs": [],
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": true
        },
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "expr": "sum by(metric) (keda_scaler_metrics_value{exported_namespace=~\"$namespace\", metric=~\"$metric\", scaledObject=\"$scaledObject\"})",
          "legendFormat": "{{ metric }}",
          "range": true,
          "refId": "A"
        }
      ],
      "title": "Scaler Metric Value",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "description": "shows current replicas against max ones based on time difference",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "axisCenteredZero": false,
            "axisColorMode": "text",
            "axisLabel": "",
            "axisPlacement": "auto",
            "barAlignment": 0,
            "drawStyle": "line",
            "fillOpacity": 21,
            "gradientMode": "opacity",
            "hideFrom": {
              "legend": false,
              "tooltip": false,
              "viz": false
            },
            "lineInterpolation": "linear",
            "lineStyle": {
              "fill": "solid"
            },
            "lineWidth": 1,
            "pointSize": 5,
            "scaleDistribution": {
              "type": "linear"
            },
            "showPoints": "auto",
            "spanNulls": false,
            "stacking": {
              "group": "A",
              "mode": "none"
            },
            "thresholdsStyle": {
              "mode": "off"
            }
          },
          "mappings": [],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              }
            ]
          },
          "unit": "short"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 8,
        "w": 24,
        "x": 0,
        "y": 20
      },
      "id": 13,
      "options": {
        "legend": {
          "calcs": [],
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": true
        },
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "kube_horizontalpodautoscaler_status_current_replicas{namespace=\"$namespace\",horizontalpodautoscaler=\"keda-hpa-$scaledObject\"}",
          "format": "time_series",
          "instant": false,
          "interval": "",
          "legendFormat": "current_replicas",
          "range": true,
          "refId": "A"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "kube_horizontalpodautoscaler_spec_max_replicas{namespace=\"$namespace\",horizontalpodautoscaler=\"keda-hpa-$scaledObject\"}",
          "format": "time_series",
          "hide": false,
          "instant": false,
          "legendFormat": "max_replicas",
          "range": true,
          "refId": "B"
        }
      ],
      "title": "Current/max replicas (time based)",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "description": "shows current replicas against max ones based on time difference",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "continuous-GrYlRd"
          },
          "custom": {
            "fillOpacity": 70,
            "lineWidth": 0,
            "spanNulls": false
          },
          "mappings": [
            {
              "options": {
                "0": {
                  "color": "green",
                  "index": 0,
                  "text": "No scaling"
                }
              },
              "type": "value"
            },
            {
              "options": {
                "from": -200,
                "result": {
                  "color": "light-red",
                  "index": 1,
                  "text": "Scaling down"
                },
                "to": 0
              },
              "type": "range"
            },
            {
              "options": {
                "from": 0,
                "result": {
                  "color": "semi-dark-red",
                  "index": 2,
                  "text": "Scaling up"
                },
                "to": 200
              },
              "type": "range"
            }
          ],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              }
            ]
          },
          "unit": "none"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 8,
        "w": 24,
        "x": 0,
        "y": 28
      },
      "id": 16,
      "options": {
        "alignValue": "left",
        "legend": {
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": false,
          "width": 0
        },
        "mergeValues": true,
        "rowHeight": 1,
        "showValue": "never",
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "delta(kube_horizontalpodautoscaler_status_current_replicas{namespace=\"$namespace\",horizontalpodautoscaler=\"keda-hpa-$scaledObject\"}[1m])",
          "format": "time_series",
          "instant": false,
          "interval": "",
          "legendFormat": ".",
          "range": true,
          "refId": "A"
        }
      ],
      "title": "Changes in replicas",
      "type": "state-timeline"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "description": "shows current replicas against max ones",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "thresholds"
          },
          "mappings": [],
          "min": 0,
          "thresholds": {
            "mode": "percentage",
            "steps": [
              {
                "color": "green"
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          },
          "unit": "short"
        },
        "overrides": []
      },
      "gridPos": {
        "h": 8,
        "w": 12,
        "x": 0,
        "y": 36
      },
      "id": 15,
      "options": {
        "orientation": "auto",
        "reduceOptions": {
          "calcs": [
            "lastNotNull"
          ],
          "fields": "/^current_replicas$/",
          "values": false
        },
        "showThresholdLabels": false,
        "showThresholdMarkers": true
      },
      "pluginVersion": "9.5.2",
      "targets": [
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "kube_horizontalpodautoscaler_status_current_replicas{namespace=\"$namespace\",horizontalpodautoscaler=\"keda-hpa-$scaledObject\"}",
          "instant": true,
          "legendFormat": "current_replicas",
          "range": false,
          "refId": "A"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "kube_horizontalpodautoscaler_spec_max_replicas{namespace=\"$namespace\",horizontalpodautoscaler=\"keda-hpa-$scaledObject\"}",
          "hide": false,
          "instant": true,
          "legendFormat": "max_replicas",
          "range": false,
          "refId": "B"
        }
      ],
      "title": "Current/max replicas",
      "type": "gauge"
    }
  ],
  "refresh": "1m",
  "schemaVersion": 38,
  "style": "dark",
  "tags": [],
  "templating": {
    "list": [
      {
        "current": {
          "selected": false,
          "text": "Prometheus",
          "value": "Prometheus"
        },
        "hide": 0,
        "includeAll": false,
        "multi": false,
        "name": "datasource",
        "options": [],
        "query": "prometheus",
        "queryValue": "",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "type": "datasource"
      },
      {
        "current": {
          "selected": false,
          "text": "bhe-test",
          "value": "bhe-test"
        },
        "datasource": {
          "type": "prometheus",
          "uid": "${datasource}"
        },
        "definition": "label_values(keda_scaler_active,exported_namespace)",
        "hide": 0,
        "includeAll": false,
        "multi": false,
        "name": "namespace",
        "options": [],
        "query": {
          "query": "label_values(keda_scaler_active,exported_namespace)",
          "refId": "PrometheusVariableQueryEditor-VariableQuery"
        },
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 1,
        "type": "query"
      },
      {
        "current": {
          "selected": false,
          "text": "All",
          "value": "$__all"
        },
        "datasource": {
          "type": "prometheus",
          "uid": "${datasource}"
        },
        "definition": "label_values(keda_scaler_active{exported_namespace=\"$namespace\"},scaledObject)",
        "hide": 0,
        "includeAll": true,
        "multi": true,
        "name": "scaledObject",
        "options": [],
        "query": {
          "query": "label_values(keda_scaler_active{exported_namespace=\"$namespace\"},scaledObject)",
          "refId": "PrometheusVariableQueryEditor-VariableQuery"
        },
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      },
      {
        "current": {
          "selected": false,
          "text": "cronScaler",
          "value": "cronScaler"
        },
        "datasource": {
          "type": "prometheus",
          "uid": "${datasource}"
        },
        "definition": "label_values(keda_scaler_active{exported_namespace=\"$namespace\"},scaler)",
        "hide": 0,
        "includeAll": false,
        "multi": false,
        "name": "scaler",
        "options": [],
        "query": {
          "query": "label_values(keda_scaler_active{exported_namespace=\"$namespace\"},scaler)",
          "refId": "PrometheusVariableQueryEditor-VariableQuery"
        },
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      },
      {
        "current": {
          "selected": false,
          "text": "s0-cron-Etc-UTC-40xxxx-55xxxx",
          "value": "s0-cron-Etc-UTC-40xxxx-55xxxx"
        },
        "datasource": {
          "type": "prometheus",
          "uid": "${datasource}"
        },
        "definition": "label_values(keda_scaler_active{exported_namespace=\"$namespace\"},metric)",
        "hide": 0,
        "includeAll": false,
        "multi": false,
        "name": "metric",
        "options": [],
        "query": {
          "query": "label_values(keda_scaler_active{exported_namespace=\"$namespace\"},metric)",
          "refId": "PrometheusVariableQueryEditor-VariableQuery"
        },
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      }
    ]
  },
  "time": {
    "from": "now-24h",
    "to": "now"
  },
  "timepicker": {},
  "timezone": "",
  "title": "KEDA",
  "uid": "asdasd8rvmMxdVk",
  "version": 8,
  "weekStart": ""
}

 

KEDA 설치

# KEDA 설치
cat <<EOT > keda-values.yaml
metricsServer:
  useHostNetwork: true

prometheus:
  metricServer:
    enabled: true
    port: 9022
    portName: metrics
    path: /metrics
    serviceMonitor:
      # Enables ServiceMonitor creation for the Prometheus Operator
      enabled: true
    podMonitor:
      # Enables PodMonitor creation for the Prometheus Operator
      enabled: true
  operator:
    enabled: true
    port: 8080
    serviceMonitor:
      # Enables ServiceMonitor creation for the Prometheus Operator
      enabled: true
    podMonitor:
      # Enables PodMonitor creation for the Prometheus Operator
      enabled: true

  webhooks:
    enabled: true
    port: 8080
    serviceMonitor:
      # Enables ServiceMonitor creation for the Prometheus webhooks
      enabled: true
EOT

kubectl create namespace keda
helm repo add kedacore https://kedacore.github.io/charts
helm install keda kedacore/keda --version 2.13.0 --namespace keda -f keda-values.yaml

 

# KEDA 설치 확인
kubectl get all -n keda
kubectl get validatingwebhookconfigurations keda-admission
kubectl get validatingwebhookconfigurations keda-admission | kubectl neat | yh
kubectl get crd | grep keda

 

 

 

# keda 네임스페이스에 디플로이먼트 생성
kubectl apply -f php-apache.yaml -n keda
kubectl get pod -n keda

 

ScaledObject 정책 생성 : cron

cat <<EOT > keda-cron.yaml
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: php-apache-cron-scaled
spec:
  minReplicaCount: 0
  maxReplicaCount: 2
  pollingInterval: 30
  cooldownPeriod: 300
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: php-apache
  triggers:
  - type: cron
    metadata:
      timezone: Asia/Seoul
      start: 00,15,30,45 * * * *
      end: 05,20,35,50 * * * *
      desiredReplicas: "1"
EOT
kubectl apply -f keda-cron.yaml -n keda

 

 

# 모니터링
watch -d 'kubectl get ScaledObject,hpa,pod -n keda'
kubectl get ScaledObject -w

 

 

# 확인
kubectl get ScaledObject,hpa,pod -n keda
kubectl get hpa -o jsonpath={.items[0].spec} -n keda | j

 

 

 

# KEDA 및 deployment 등 삭제
kubectl delete -f keda-cron.yaml -n keda && kubectl delete deploy php-apache -n keda && helm uninstall keda -n keda
kubectl delete namespace keda