高可用方案

本文介绍 Zadig 高可用保障相关的配置和建议。

高可用保障

包括 K8s 基础设施、Zadig 系统组件和数据库的高可用。

K8s 资源高可用

基础资源的高可用，由 Kubernetes 集群的提供者(公有云/自建云)保障。

应用高可用

提供以下建议保障应用高可用：

  • 使用 K8s 原生的 deployment 部署，保证服务出现极端情况异常退出后可以被迅速拉起
  • 通过内置的 metric 接口，结合 Prometheus 以及预配置的 Grafana 面板实时展现 Zadig 组件的性能指标(CPU / Memory 利用率)
  • 根据当前环境中实际的业务规模，为各组件配置合适的资源规格。请参考 Zadig Chart 的 values.yaml 文件中 microservice.{service}.resources 配置项进行配置
  • 结合 Prometheus alertmanager 配置核心组件监控报警，报警触发后请及时检查组件的运行状态，部分核心组件的报警规则建议如下：
    • aslan，cron，hub-server 组件：当 CPU 或内存占用率达到资源配置上限的 70%，持续超过 2 分钟时触发报警
    • dind 组件：当 CPU 或内存占用率达到资源配置上限的 80%，持续超过 2 分钟时触发报警
  • 备份当前安装参数以及 Chart：
    • 通过 helm get values <Zadig Release Name> -n <Zadig Namespace> > Zadig.yaml 获取当前安装参数
    • 通过 helm pull koderover-chart/zadigx --version=<version> 备份当前 Chart

提示

Zadig 中部分组件支持多副本策略，可根据组件的实时资源占用情况按需调整实际副本数。支持多副本配置的组件如下：

  • deployment/zadig-portal
  • deployment/opa
  • deployment/user
  • deployment/warpdrive
  • deployment/gateway-proxy
  • statefulSet/dind

数据高可用

建议安装时使用高可用 MongoDB、MySQL 存储介质，并对 Zadig 系统数据定时备份。建议如下：

  • 使用高可用的数据库，以阿里云为例：
    • MySQL 建议使用 RDS MySQL 高可用版
    • MongoDB 选用独占型实例
  • 使用高可用的制品仓库：
    • 使用云厂商提供的高可用镜像仓库 / Helm 仓库
    • 若使用 K8s Helm Chart 项目，建议集成高可用的对象存储并设为默认使用，数据备份建议：一天一次
  • 定期备份数据库数据
    • 若使用公有云，需要手动设置公有云 MySQL/MongoDB 实例的自动备份策略
    • 备份策略建议：一天一次
    • MinIO 备份策略：一天一次

监控告警配置

推荐使用 Prometheus高可用方案 - 图1 (opens new window) 作为监控和性能指标信息存储方案，使用 Grafana高可用方案 - 图2 (opens new window) 作为可视化组件进行展示。

Prometheus 配置

  1. 在 Prometheus 配置的 scrape_configs 中添加如下 job：

如果 Zadig 和 Prometheus 在同一集群中

  1. job_name: prometheus
  2. metrics_path: /api/metrics
  3. static_configs:
  4. - targets:
  5.   - aslan.<部署 namespace>.svc:25000

如果 Zadig 和 Prometheus 在不同集群中

  1. job_name: admin
  2. metrics_path: /api/aslan/metrics
  3. static_configs:
  4. - targets:
  5.   - <Zadig的访问域名>
  6. scheme: https
  1. 重新加载 Prometheus 配置
  2. 在 Prometheus 的 query 界面，输入 request_total 进行查询，确认有数据，证明配置成功

Grafana 配置

  1. [可选项]在 Grafana 的 configuration - Data source 中配置上文的 Prometheus 为数据源
  2. 在 dashboards - import 中输入如下 JSON 导入 Grafana 面板
  1. {
  2.   "annotations": {
  3.     "list": [
  4.       {
  5.         "builtIn": 1,
  6.         "datasource": {
  7.           "type": "grafana",
  8.           "uid": "-- Grafana --"
  9.         },
  10.         "enable": true,
  11.         "hide": true,
  12.         "iconColor": "rgba(0, 211, 255, 1)",
  13.         "name": "Annotations & Alerts",
  14.         "target": {
  15.           "limit": 100,
  16.           "matchAny": false,
  17.           "tags": [],
  18.           "type": "dashboard"
  19.         },
  20.         "type": "dashboard"
  21.       }
  22.     ]
  23.   },
  24.   "editable": true,
  25.   "fiscalYearStartMonth": 0,
  26.   "graphTooltip": 0,
  27.   "id": 1,
  28.   "links": [],
  29.   "liveNow": false,
  30.   "panels": [
  31.     {
  32.       "fieldConfig": {
  33.         "defaults": {
  34.           "color": {
  35.             "mode": "palette-classic"
  36.           },
  37.           "custom": {
  38.             "axisCenteredZero": false,
  39.             "axisColorMode": "text",
  40.             "axisLabel": "",
  41.             "axisPlacement": "auto",
  42.             "barAlignment": 0,
  43.             "drawStyle": "line",
  44.             "fillOpacity": 0,
  45.             "gradientMode": "none",
  46.             "hideFrom": {
  47.               "legend": false,
  48.               "tooltip": false,
  49.               "viz": false
  50.             },
  51.             "lineInterpolation": "linear",
  52.             "lineWidth": 3,
  53.             "pointSize": 5,
  54.             "scaleDistribution": {
  55.               "type": "linear"
  56.             },
  57.             "showPoints": "auto",
  58.             "spanNulls": false,
  59.             "stacking": {
  60.               "group": "A",
  61.               "mode": "none"
  62.             },
  63.             "thresholdsStyle": {
  64.               "mode": "off"
  65.             }
  66.           },
  67.           "mappings": [],
  68.           "thresholds": {
  69.             "mode": "absolute",
  70.             "steps": [
  71.               {
  72.                 "color": "green",
  73.                 "value": null
  74.               },
  75.               {
  76.                 "color": "red",
  77.                 "value": 80
  78.               }
  79.             ]
  80.           }
  81.         },
  82.         "overrides": []
  83.       },
  84.       "gridPos": {
  85.         "h": 9,
  86.         "w": 12,
  87.         "x": 0,
  88.         "y": 0
  89.       },
  90.       "id": 2,
  91.       "options": {
  92.         "legend": {
  93.           "calcs": [],
  94.           "displayMode": "list",
  95.           "placement": "right",
  96.           "showLegend": true
  97.         },
  98.         "tooltip": {
  99.           "mode": "single",
  100.           "sort": "none"
  101.         }
  102.       },
  103.       "targets": [
  104.         {
  105.           "editorMode": "code",
  106.           "exemplar": false,
  107.           "expr": "sum by(instance) (rate(request_total{status=\"200\"}[1m]))",
  108.           "format": "time_series",
  109.           "hide": false,
  110.           "instant": false,
  111.           "interval": "",
  112.           "legendFormat": "200",
  113.           "range": true,
  114.           "refId": "A"
  115.         },
  116.         {
  117.           "editorMode": "code",
  118.           "expr": "sum by(instance) (rate(request_total{status=~\"4..\"}[1m]))",
  119.           "hide": false,
  120.           "legendFormat": "4xx",
  121.           "range": true,
  122.           "refId": "B"
  123.         },
  124.         {
  125.           "editorMode": "code",
  126.           "expr": "sum by(instance) (rate(request_total{status=\"5..\"}[1m]))",
  127.           "hide": false,
  128.           "legendFormat": "5xx",
  129.           "range": true,
  130.           "refId": "C"
  131.         }
  132.       ],
  133.       "title": "QPS追踪",
  134.       "type": "timeseries"
  135.     },
  136.     {
  137.       "description": "",
  138.       "fieldConfig": {
  139.         "defaults": {
  140.           "color": {
  141.             "mode": "thresholds"
  142.           },
  143.           "mappings": [],
  144.           "thresholds": {
  145.             "mode": "absolute",
  146.             "steps": [
  147.               {
  148.                 "color": "green",
  149.                 "value": null
  150.               },
  151.               {
  152.                 "color": "red",
  153.                 "value": 80
  154.               }
  155.             ]
  156.           }
  157.         },
  158.         "overrides": []
  159.       },
  160.       "gridPos": {
  161.         "h": 9,
  162.         "w": 6,
  163.         "x": 12,
  164.         "y": 0
  165.       },
  166.       "id": 4,
  167.       "options": {
  168.         "orientation": "auto",
  169.         "reduceOptions": {
  170.           "calcs": [
  171.             "lastNotNull"
  172.           ],
  173.           "fields": "",
  174.           "values": false
  175.         },
  176.         "showThresholdLabels": false,
  177.         "showThresholdMarkers": true
  178.       },
  179.       "pluginVersion": "9.4.7",
  180.       "targets": [
  181.         {
  182.           "editorMode": "code",
  183.           "expr": "running_workflows",
  184.           "legendFormat": "__auto",
  185.           "range": true,
  186.           "refId": "A"
  187.         }
  188.       ],
  189.       "title": "运行中的工作流",
  190.       "type": "gauge"
  191.     },
  192.     {
  193.       "description": "",
  194.       "fieldConfig": {
  195.         "defaults": {
  196.           "color": {
  197.             "mode": "thresholds"
  198.           },
  199.           "mappings": [],
  200.           "thresholds": {
  201.             "mode": "absolute",
  202.             "steps": [
  203.               {
  204.                 "color": "green",
  205.                 "value": null
  206.               },
  207.               {
  208.                 "color": "red",
  209.                 "value": 80
  210.               }
  211.             ]
  212.           }
  213.         },
  214.         "overrides": []
  215.       },
  216.       "gridPos": {
  217.         "h": 9,
  218.         "w": 6,
  219.         "x": 18,
  220.         "y": 0
  221.       },
  222.       "id": 6,
  223.       "options": {
  224.         "orientation": "auto",
  225.         "reduceOptions": {
  226.           "calcs": [
  227.             "lastNotNull"
  228.           ],
  229.           "fields": "",
  230.           "values": false
  231.         },
  232.         "showThresholdLabels": false,
  233.         "showThresholdMarkers": true
  234.       },
  235.       "pluginVersion": "9.4.7",
  236.       "targets": [
  237.         {
  238.           "editorMode": "code",
  239.           "expr": "pending_workflows",
  240.           "legendFormat": "__auto",
  241.           "range": true,
  242.           "refId": "A"
  243.         }
  244.       ],
  245.       "title": "排队中的工作流",
  246.       "type": "gauge"
  247.     },
  248.     {
  249.       "fieldConfig": {
  250.         "defaults": {
  251.           "color": {
  252.             "mode": "palette-classic"
  253.           },
  254.           "custom": {
  255.             "axisCenteredZero": false,
  256.             "axisColorMode": "text",
  257.             "axisLabel": "",
  258.             "axisPlacement": "auto",
  259.             "barAlignment": 0,
  260.             "drawStyle": "line",
  261.             "fillOpacity": 0,
  262.             "gradientMode": "none",
  263.             "hideFrom": {
  264.               "legend": false,
  265.               "tooltip": false,
  266.               "viz": false
  267.             },
  268.             "lineInterpolation": "linear",
  269.             "lineWidth": 1,
  270.             "pointSize": 5,
  271.             "scaleDistribution": {
  272.               "type": "linear"
  273.             },
  274.             "showPoints": "auto",
  275.             "spanNulls": false,
  276.             "stacking": {
  277.               "group": "A",
  278.               "mode": "none"
  279.             },
  280.             "thresholdsStyle": {
  281.               "mode": "off"
  282.             }
  283.           },
  284.           "mappings": [],
  285.           "thresholds": {
  286.             "mode": "absolute",
  287.             "steps": [
  288.               {
  289.                 "color": "green",
  290.                 "value": null
  291.               },
  292.               {
  293.                 "color": "red",
  294.                 "value": 80
  295.               }
  296.             ]
  297.           }
  298.         },
  299.         "overrides": []
  300.       },
  301.       "gridPos": {
  302.         "h": 8,
  303.         "w": 12,
  304.         "x": 0,
  305.         "y": 9
  306.       },
  307.       "id": 8,
  308.       "options": {
  309.         "legend": {
  310.           "calcs": [],
  311.           "displayMode": "list",
  312.           "placement": "right",
  313.           "showLegend": true
  314.         },
  315.         "tooltip": {
  316.           "mode": "single",
  317.           "sort": "none"
  318.         }
  319.       },
  320.       "targets": [
  321.         {
  322.           "editorMode": "code",
  323.           "expr": "cpu",
  324.           "legendFormat": "{{service}}",
  325.           "range": true,
  326.           "refId": "A"
  327.         }
  328.       ],
  329.       "title": "CPU 消耗",
  330.       "type": "timeseries"
  331.     },
  332.     {
  333.       "fieldConfig": {
  334.         "defaults": {
  335.           "color": {
  336.             "mode": "palette-classic"
  337.           },
  338.           "custom": {
  339.             "axisCenteredZero": false,
  340.             "axisColorMode": "text",
  341.             "axisLabel": "",
  342.             "axisPlacement": "auto",
  343.             "barAlignment": 0,
  344.             "drawStyle": "line",
  345.             "fillOpacity": 0,
  346.             "gradientMode": "none",
  347.             "hideFrom": {
  348.               "legend": false,
  349.               "tooltip": false,
  350.               "viz": false
  351.             },
  352.             "lineInterpolation": "linear",
  353.             "lineWidth": 1,
  354.             "pointSize": 5,
  355.             "scaleDistribution": {
  356.               "type": "linear"
  357.             },
  358.             "showPoints": "auto",
  359.             "spanNulls": false,
  360.             "stacking": {
  361.               "group": "A",
  362.               "mode": "none"
  363.             },
  364.             "thresholdsStyle": {
  365.               "mode": "off"
  366.             }
  367.           },
  368.           "mappings": [],
  369.           "thresholds": {
  370.             "mode": "absolute",
  371.             "steps": [
  372.               {
  373.                 "color": "green",
  374.                 "value": null
  375.               },
  376.               {
  377.                 "color": "red",
  378.                 "value": 80
  379.               }
  380.             ]
  381.           }
  382.         },
  383.         "overrides": []
  384.       },
  385.       "gridPos": {
  386.         "h": 8,
  387.         "w": 12,
  388.         "x": 12,
  389.         "y": 9
  390.       },
  391.       "id": 10,
  392.       "options": {
  393.         "legend": {
  394.           "calcs": [],
  395.           "displayMode": "list",
  396.           "placement": "right",
  397.           "showLegend": true
  398.         },
  399.         "tooltip": {
  400.           "mode": "single",
  401.           "sort": "none"
  402.         }
  403.       },
  404.       "targets": [
  405.         {
  406.           "editorMode": "code",
  407.           "expr": "memory",
  408.           "legendFormat": "{{service}}",
  409.           "range": true,
  410.           "refId": "A"
  411.         }
  412.       ],
  413.       "title": "内存消耗（MB）",
  414.       "type": "timeseries"
  415.     },
  416.     {    
  417.       "fieldConfig": {
  418.         "defaults": {
  419.           "color": {
  420.             "mode": "thresholds"
  421.           },
  422.           "custom": {
  423.             "align": "auto",
  424.             "cellOptions": {
  425.               "type": "auto"
  426.             },
  427.             "inspect": false
  428.           },
  429.           "mappings": [],
  430.           "thresholds": {
  431.             "mode": "absolute",
  432.             "steps": [
  433.               {
  434.                 "color": "green",
  435.                 "value": null
  436.               },
  437.               {
  438.                 "color": "red",
  439.                 "value": 80
  440.               }
  441.             ]
  442.           }
  443.         },
  444.         "overrides": [
  445.           {
  446.             "matcher": {
  447.               "id": "byName",
  448.               "options": "慢接口"
  449.             },
  450.             "properties": [
  451.               {
  452.                 "id": "custom.width",
  453.                 "value": 1301
  454.               }
  455.             ]
  456.           }
  457.         ]
  458.       },
  459.       "gridPos": {
  460.         "h": 8,
  461.         "w": 12,
  462.         "x": 0,
  463.         "y": 17
  464.       },
  465.       "id": 12,
  466.       "options": {
  467.         "footer": {
  468.           "countRows": false,
  469.           "fields": "",
  470.           "reducer": [
  471.             "sum"
  472.           ],
  473.           "show": false
  474.         },
  475.         "frameIndex": 0,
  476.         "showHeader": true,
  477.         "sortBy": []
  478.       },
  479.       "pluginVersion": "9.4.7",
  480.       "targets": [
  481.         {
  482.           "editorMode": "code",
  483.           "exemplar": false,
  484.           "expr": "topk(10, sum by(method, handler) (api_response_time_bucket{status=\"200\",le=\"+Inf\"}) - sum by(method, handler) (api_response_time_bucket{status=\"200\",le=\"1.4\"}))",
  485.           "format": "time_series",
  486.           "hide": false,
  487.           "legendFormat": "__auto",
  488.           "range": true,
  489.           "refId": "A"
  490.         }
  491.       ],
  492.       "title": "慢接口列表",
  493.       "transformations": [
  494.         {
  495.           "id": "reduce",
  496.           "options": {
  497.             "includeTimeField": false,
  498.             "labelsToFields": false,
  499.             "mode": "seriesToRows",
  500.             "reducers": [
  501.               "last"
  502.             ]
  503.           }
  504.         },
  505.         {
  506.           "id": "sortBy",
  507.           "options": {
  508.             "fields": {},
  509.             "sort": [
  510.               {
  511.                 "desc": true,
  512.                 "field": "Last"
  513.               }
  514.             ]
  515.           }
  516.         },
  517.         {
  518.           "id": "organize",
  519.           "options": {
  520.             "excludeByName": {},
  521.             "indexByName": {},
  522.             "renameByName": {
  523.               "Field": "慢接口",
  524.               "Last": "请求数量"
  525.             }
  526.           }
  527.         }
  528.       ],
  529.       "type": "table"
  530.     }
  531.   ],
  532.   "refresh": "5s",
  533.   "revision": 1,
  534.   "schemaVersion": 38,
  535.   "style": "dark",
  536.   "tags": [],
  537.   "templating": {
  538.     "list": []
  539.   },
  540.   "time": {
  541.     "from": "now-5m",
  542.     "to": "now"
  543.   },
  544.   "timepicker": {},
  545.   "timezone": "",
  546.   "title": "Zadig 监控面板",
  547.   "uid": "w1U8k1xVk",
  548.   "version": 2,
  549.   "weekStart": ""
  550. }
  1. 在面板列表中找到 Zadig 监控面板, 确认数据正常展示。

FAQs

参考文档：部署运维 FAQs。