nginx+rsyslog+kafka+clickhouse+grafana 实现nginx 网关监控

需求

  • 我想做一个类似腾讯云网关日志最终以仪表方式呈现,比如说qps、p99、p95的请求响应时间等等

流程图

数据流转就像标题
nginx ----> rsyslog ----> kafka —> clickhouse —> grafana

部署

kafka

kafka 相关部署这里不做赘述,只要创建一个topic 就可以
这里kafka地址是 192.168.1.180,topic是``

rsyslog 设置

rsyslog 具体是啥东西这个我这里也不做介绍,本人也是一个后端开发不是做运维的,只知道这个东西性能不错,算是logstash 平替把

# 安装rsyslog-kafka 插件
yum install -y rsyslog-kafka
# 创建一个配置

vim /etc/rsyslog.d/rsyslog_nginx_kafka_cluster.conf

conf 内容

module(load="imudp")
input(type="imudp" port="514")

# nginx access log ==> rsyslog server(local) ==> kafka
module(load="omkafka")

template(name="nginxLog" type="string" string="%msg%")

if $inputname == "imudp" then {
    # 这里的名字和下面nginx 配置tag 相同
    if ($programname == "nginx_access_log") then
        action(type="omkafka"
            template="nginxLog"
            # kafka 地址
            broker=["192.168.1.180:9092"]
            # topic 名字
            topic="rsyslog_nginx"
            partitions.auto="on"
            confParam=[
                "socket.keepalive.enable=true"
            ]
        )
}

:rawmsg, contains, "nginx_access_log" ~

最后重启rsyslog 即可

nginx

http 节点中设置如下

log_format jsonlog '{'
        '"host": "$host",'
        '"server_addr": "$server_addr",'
        '"remote_addr":"$remote_addr",'
        '"time_format":"$time_ms",'
        '"time_sec":$times,'
        '"timestamp":$timestamp,'
        '"method":"$request_method",'
        '"request_url":"$request_uri",'
        '"status":$status,'
        '"upstream_name":"$upstream_name",'
        '"http_user_agent":"$http_user_agent",'
        '"upstream_addr":"$upstream_addr",'
        '"trace_id":"$http_traceid",'
        '"upstream_status":"$upstream_status",'
        '"upstream_response_time":"$upstream_response_time",'
        '"request_time":$request_time,'
        '"nginx_host":"$nginx_host"'
        '}';
	# 配置rsyslog,tag 和上文rsyslog 中相同!!!
    access_log syslog:server=192.168.1.179,facility=local7,tag=nginx_access_log,severity=info jsonlog;
    #access_log  /var/log/nginx/access.log  jsonlog;

配置实际转发upstream

upstream testcontrol{
	server 192.168.10.123:8081;
}

server {
    listen       18081;
    server_name  _;
    # 设置up name
    set $upstream_name 'testcontrol';
    include /etc/nginx/conf/time.conf;

    location / {
	proxy_set_header traceid $http_traceid;
        proxy_set_header n-t $msec;
        #proxy_set_header X-Real-IP $remote_addr;
        proxy_pass http://testcontrol;
    }

    location ~ /status {
        stub_status   on;
    }
}

/etc/nginx/conf/time.conf; 配置

set $nginx_host '192.168.8.64';
if ($time_iso8601 ~ "^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})") {
        set $year $1;
        set $month $2;
        set $day $3;
        set $hour $4;
        set $minutes $5;
        set $seconds $6;
        set $time_sec "$1-$2-$3 $4:$5:$6";
    }

    # 获取毫秒时间戳,并拼接到$time_zh之后
    if ($msec ~ "(\d+)\.(\d+)") {
       # 时间戳-ms
        set $timestamp $1$2;
        # 时间戳-s
	     set $times $1;
	     # 格式化之后的时间ms
        set $time_ms $time_sec.$2;
        # traceId,方便查日志
	    set $http_traceid $nginx_host#$timestamp#$request_id;
}

clickhouse

先创建一个 nginx_gw_log 表


create table app_logs.nginx_gw_log
(
    timestamp              DateTime64(3, 'Asia/Shanghai'),
    server_addr            String,
    remote_addr            String,
    time_sec               DateTime('Asia/Shanghai'),
    method                 String,
    request_url            String,
    status                 Int16,
    upstream_name          String,
    http_user_agent        String,
    upstream_addr          String,
    trace_id               String,
    upstream_status        String,
    upstream_response_time String,
    request_time           Int32,
    nginx_host              String,
    host                   String
) engine = MergeTree PARTITION BY toYYYYMMDD(timestamp)
      ORDER BY timestamp
      TTL toDateTime(timestamp) + toIntervalDay(1);

上面设置了过期1天,可以自由修改
添加kafka 引擎

create table app_logs.nginx_gw_log_kafka
(
    timestamp              DateTime64(3, 'Asia/Shanghai'),
    server_addr            String,
    remote_addr            String,
    time_sec               DateTime('Asia/Shanghai'),
    method                 String,
    request_url            String,
    status                 Int32,
    upstream_name          String,
    http_user_agent        String,
    upstream_addr          String,
    trace_id               String,
    upstream_status        String,
    upstream_response_time String,
    request_time           Decimal32(3),
    nginx_host              String,
    host                   String
) engine = Kafka()
      SETTINGS kafka_broker_list = '192.168.1.180:9092',
          kafka_topic_list = 'rsyslog_nginx',
          kafka_group_name = 'nginx_ck',
          kafka_format = 'JSONEachRow',
          kafka_skip_broken_messages = 100000,
          kafka_num_consumers = 1;

最后设置mv

CREATE MATERIALIZED VIEW app_logs.nginx_gw_log_mv TO app_logs.nginx_gw_log AS
SELECT timestamp,
       server_addr,
       remote_addr,
       time_sec,
       method,
       request_url,
       status,
       upstream_name,
       http_user_agent,
       upstream_addr,
       trace_id,
       upstream_status,
       upstream_response_time,
       toInt32(multiply(request_time, 1000)) as request_time,
       host
FROM app_logs.nginx_gw_log_kafka;

这里做了一个类型转换,因为nginx,request-time 单位是s,我想最终呈现在grafana 中是ms,所以这里做了转换,当然grafana中也可以做

上面都配置完了之后可以先验证下,保证数据最终到ck,如果有问题,需要再每个节点调试,比如先调试nginx->rsyslog ,可以先不配置kafka 输出,配置为console或者文件输出都可以,具体这里就不写了

grafana

{
  "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"
      }
    ]
  },
  "editable": true,
  "fiscalYearStartMonth": 0,
  "graphTooltip": 0,
  "id": 17,
  "links": [],
  "liveNow": false,
  "panels": [
    {
      "datasource": {
        "type": "grafana-clickhouse-datasource",
        "uid": "${datasource}"
      },
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "axisCenteredZero": false,
            "axisColorMode": "text",
            "axisLabel": "",
            "axisPlacement": "auto",
            "barAlignment": 0,
            "drawStyle": "line",
            "fillOpacity": 0,
            "gradientMode": "none",
            "hideFrom": {
              "legend": false,
              "tooltip": false,
              "viz": false
            },
            "lineInterpolation": "linear",
            "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
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          }
        },
        "overrides": []
      },
      "gridPos": {
        "h": 9,
        "w": 12,
        "x": 0,
        "y": 0
      },
      "id": 2,
      "options": {
        "legend": {
          "calcs": [],
          "displayMode": "list",
          "placement": "bottom",
          "showLegend": true
        },
        "tooltip": {
          "mode": "single",
          "sort": "none"
        }
      },
      "pluginVersion": "9.1.1",
      "targets": [
        {
          "builderOptions": {
            "database": "app_logs",
            "fields": [],
            "filters": [
              {
                "condition": "AND",
                "filterType": "custom",
                "key": "timestamp",
                "operator": "WITH IN DASHBOARD TIME RANGE",
                "restrictToFields": [
                  {
                    "label": "timestamp",
                    "name": "timestamp",
                    "picklistValues": [],
                    "type": "DateTime64(3, 'Asia/Shanghai')"
                  },
                  {
                    "label": "startTime",
                    "name": "startTime",
                    "picklistValues": [],
                    "type": "DateTime64(3, 'Asia/Shanghai')"
                  }
                ],
                "type": "datetime"
              }
            ],
            "groupBy": [],
            "limit": 100,
            "metrics": [
              {
                "aggregation": "count",
                "field": ""
              }
            ],
            "mode": "list",
            "orderBy": [],
            "table": "tk_wx_control_req_kafka",
            "timeField": "timestamp",
            "timeFieldType": "DateTime64(3, 'Asia/Shanghai')"
          },
          "datasource": {
            "type": "grafana-clickhouse-datasource",
            "uid": "${datasource}"
          },
          "format": 1,
          "meta": {
            "builderOptions": {
              "database": "app_logs",
              "fields": [],
              "filters": [
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                  "operator": "WITH IN DASHBOARD TIME RANGE",
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                      "label": "timestamp",
                      "name": "timestamp",
                      "picklistValues": [],
                      "type": "DateTime64(3, 'Asia/Shanghai')"
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                    {
                      "label": "startTime",
                      "name": "startTime",
                      "picklistValues": [],
                      "type": "DateTime64(3, 'Asia/Shanghai')"
                    }
                  ],
                  "type": "datetime"
                }
              ],
              "groupBy": [],
              "limit": 100,
              "metrics": [
                {
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                  "field": ""
                }
              ],
              "mode": "list",
              "orderBy": [],
              "table": "tk_wx_control_req_kafka",
              "timeField": "timestamp",
              "timeFieldType": "DateTime64(3, 'Asia/Shanghai')"
            }
          },
          "queryType": "sql",
          "rawSql": "SELECT time_sec as a, count() as num FROM \"app_logs\".${table_name} where ( timestamp  >= $__fromTime AND timestamp <= $__toTime )\r\ngroup by a order by a desc ;\r\n",
          "refId": "A",
          "selectedFormat": 4
        }
      ],
      "title": "qps",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "grafana-clickhouse-datasource",
        "uid": "${datasource}"
      },
      "fieldConfig": {
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            "axisColorMode": "text",
            "axisLabel": "",
            "axisPlacement": "auto",
            "barAlignment": 0,
            "drawStyle": "line",
            "fillOpacity": 0,
            "gradientMode": "none",
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              "tooltip": false,
              "viz": false
            },
            "lineInterpolation": "linear",
            "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
              },
              {
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                "value": 80
              }
            ]
          }
        },
        "overrides": []
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      "gridPos": {
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        "w": 12,
        "x": 12,
        "y": 0
      },
      "id": 3,
      "options": {
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        },
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      },
      "pluginVersion": "9.1.1",
      "targets": [
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                "key": "timestamp",
                "operator": "WITH IN DASHBOARD TIME RANGE",
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                    "picklistValues": [],
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            "limit": 100,
            "metrics": [
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                "field": ""
              }
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            "mode": "list",
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            "table": "tk_wx_control_req_kafka",
            "timeField": "timestamp",
            "timeFieldType": "DateTime64(3, 'Asia/Shanghai')"
          },
          "datasource": {
            "type": "grafana-clickhouse-datasource",
            "uid": "${datasource}"
          },
          "format": 1,
          "meta": {
            "builderOptions": {
              "database": "app_logs",
              "fields": [],
              "filters": [
                {
                  "condition": "AND",
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                  "key": "timestamp",
                  "operator": "WITH IN DASHBOARD TIME RANGE",
                  "restrictToFields": [
                    {
                      "label": "timestamp",
                      "name": "timestamp",
                      "picklistValues": [],
                      "type": "DateTime64(3, 'Asia/Shanghai')"
                    },
                    {
                      "label": "startTime",
                      "name": "startTime",
                      "picklistValues": [],
                      "type": "DateTime64(3, 'Asia/Shanghai')"
                    }
                  ],
                  "type": "datetime"
                }
              ],
              "groupBy": [],
              "limit": 100,
              "metrics": [
                {
                  "aggregation": "count",
                  "field": ""
                }
              ],
              "mode": "list",
              "orderBy": [],
              "table": "tk_wx_control_req_kafka",
              "timeField": "timestamp",
              "timeFieldType": "DateTime64(3, 'Asia/Shanghai')"
            }
          },
          "queryType": "sql",
          "rawSql": "SELECT time_sec as a, toInt32(quantile(0.95)(request_time))  as num FROM \"app_logs\".${table_name} where ( timestamp  >= $__fromTime AND timestamp <= $__toTime )\r\ngroup by a order by a desc ;",
          "refId": "p95",
          "selectedFormat": 4
        },
        {
          "builderOptions": {
            "database": "app_logs",
            "fields": [],
            "filters": [
              {
                "condition": "AND",
                "filterType": "custom",
                "key": "timestamp",
                "operator": "WITH IN DASHBOARD TIME RANGE",
                "restrictToFields": [
                  {
                    "label": "timestamp",
                    "name": "timestamp",
                    "picklistValues": [],
                    "type": "DateTime64(3, 'Asia/Shanghai')"
                  },
                  {
                    "label": "startTime",
                    "name": "startTime",
                    "picklistValues": [],
                    "type": "DateTime64(3, 'Asia/Shanghai')"
                  }
                ],
                "type": "datetime"
              }
            ],
            "groupBy": [],
            "limit": 100,
            "metrics": [
              {
                "aggregation": "count",
                "field": ""
              }
            ],
            "mode": "list",
            "orderBy": [],
            "table": "tk_wx_control_req_kafka",
            "timeField": "timestamp",
            "timeFieldType": "DateTime64(3, 'Asia/Shanghai')"
          },
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            "type": "grafana-clickhouse-datasource",
            "uid": "${datasource}"
          },
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          "hide": false,
          "meta": {
            "builderOptions": {
              "database": "app_logs",
              "fields": [],
              "filters": [
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                      "name": "timestamp",
                      "picklistValues": [],
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                    },
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                      "name": "startTime",
                      "picklistValues": [],
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                    }
                  ],
                  "type": "datetime"
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              ],
              "groupBy": [],
              "limit": 100,
              "metrics": [
                {
                  "aggregation": "count",
                  "field": ""
                }
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              "mode": "list",
              "orderBy": [],
              "table": "tk_wx_control_req_kafka",
              "timeField": "timestamp",
              "timeFieldType": "DateTime64(3, 'Asia/Shanghai')"
            }
          },
          "queryType": "sql",
          "rawSql": "SELECT time_sec as a, toInt32(quantile(0.99)(request_time))  as num FROM \"app_logs\".${table_name} where ( timestamp  >= $__fromTime AND timestamp <= $__toTime )\r\ngroup by a order by a desc ;",
          "refId": "p99",
          "selectedFormat": 4
        }
      ],
      "title": "响应时间统计",
      "type": "timeseries"
    },
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        "uid": "${datasource}"
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      "gridPos": {
        "h": 9,
        "w": 12,
        "x": 0,
        "y": 9
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          "reducer": [
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          "show": false
        },
        "showHeader": true
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      "targets": [
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                    "label": "timestamp",
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                    "picklistValues": [],
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                    "picklistValues": [],
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          },
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            "uid": "${datasource}"
          },
          "format": 1,
          "meta": {
            "builderOptions": {
              "database": "app_logs",
              "fields": [],
              "filters": [
                {
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                  "operator": "WITH IN DASHBOARD TIME RANGE",
                  "restrictToFields": [
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                      "label": "timestamp",
                      "name": "timestamp",
                      "picklistValues": [],
                      "type": "DateTime64(3, 'Asia/Shanghai')"
                    },
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                      "label": "startTime",
                      "name": "startTime",
                      "picklistValues": [],
                      "type": "DateTime64(3, 'Asia/Shanghai')"
                    }
                  ],
                  "type": "datetime"
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              ],
              "groupBy": [],
              "limit": 100,
              "metrics": [
                {
                  "aggregation": "count",
                  "field": ""
                }
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              "mode": "list",
              "orderBy": [],
              "table": "tk_wx_control_req_kafka",
              "timeField": "timestamp",
              "timeFieldType": "DateTime64(3, 'Asia/Shanghai')"
            }
          },
          "queryType": "sql",
          "rawSql": "SELECT request_time as k,request_url,trace_id  FROM \"app_logs\".${table_name} where ( timestamp  >= $__fromTime AND timestamp <= $__toTime )\r\n order by k desc limit 10;\r\n",
          "refId": "A",
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        }
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      "title": "最耗时",
      "type": "table"
    },
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      "datasource": {
        "type": "grafana-clickhouse-datasource",
        "uid": "${datasource}"
      },
      "fieldConfig": {
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                "value": null
              },
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                "value": 80
              }
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          }
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        "overrides": []
      },
      "gridPos": {
        "h": 9,
        "w": 12,
        "x": 12,
        "y": 9
      },
      "id": 5,
      "options": {
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          "reducer": [
            "sum"
          ],
          "show": false
        },
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      "targets": [
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            "database": "app_logs",
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                "key": "timestamp",
                "operator": "WITH IN DASHBOARD TIME RANGE",
                "restrictToFields": [
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  "tags": [],
  "templating": {
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      {
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          "text": "nginx_gw_log",
          "value": "nginx_gw_log"
        },
        "datasource": {
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          "uid": "${datasource}"
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        "definition": "show  tables from app_logs where name = 'nginx_gw_log' ",
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        "includeAll": false,
        "label": "table_name",
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        "name": "table_name",
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        "query": "show  tables from app_logs where name = 'nginx_gw_log' ",
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        "skipUrlSync": false,
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      {
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      {
        "current": {
          "isNone": true,
          "selected": false,
          "text": "None",
          "value": ""
        },
        "datasource": {
          "type": "grafana-clickhouse-datasource",
          "uid": "${datasource}"
        },
        "definition": "select upstream_name from app_logs.nginx_gw_log",
        "hide": 0,
        "includeAll": false,
        "label": "upstream_name",
        "multi": false,
        "name": "upstream_name",
        "options": [],
        "query": "select upstream_name from app_logs.nginx_gw_log",
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      },
      {
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          "selected": false,
          "text": "None",
          "value": ""
        },
        "datasource": {
          "type": "grafana-clickhouse-datasource",
          "uid": "${datasource}"
        },
        "definition": "select nginx_host from app_logs.nginx_gw_log where upstream_name = \"$upstream_name\"",
        "hide": 0,
        "includeAll": false,
        "label": "nginx_host",
        "multi": false,
        "name": "nginx_host",
        "options": [],
        "query": "select nginx_host from app_logs.nginx_gw_log where upstream_name = \"$upstream_name\"",
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  "time": {
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    "to": "now"
  },
  "timepicker": {},
  "timezone": "",
  "title": "nginx_gw",
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}

最终呈现效果

nginx+rsyslog+kafka+clickhouse+grafana 实现nginx 网关监控_第1张图片

隐患点

  • clickhouse 本身查询qps 就不高,如果数据量很大可以考虑集群或者其他的存储,doris、es等等
  • 不知道nginx+rsyslog 对性能有多少影响,目前测试单机nginx大几千的qps 都没啥问题

有其他更好方案的小伙伴留言哦

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