Haproxy¶

Haproxy 指标信息采集。

安装部署¶

版本要求¶

HAProxy 2.0
HAProxy Enterprise 2.0r1
HAProxy ALOHA 11.5

1. Haproxy 开启指标¶

调整 Haproxy 配置文件，新增以下模块配置：

frontend prometheus
  bind *:8405
  mode http
  http-request use-service prometheus-exporter if { path /metrics }
  no log
......

通过prometheus-exporter暴露指标信息，端口为 8405，path为/metrics。

重启 Haproxy 服务。通过访问8405端口获取指标信息，如下所示：

# HELP haproxy_process_nbthread Number of started threads (global.nbthread)
# TYPE haproxy_process_nbthread gauge
haproxy_process_nbthread 8
# HELP haproxy_process_nbproc Number of started worker processes (historical, always 1)
# TYPE haproxy_process_nbproc gauge
haproxy_process_nbproc 1
# HELP haproxy_process_relative_process_id Relative worker process number (1)
# TYPE haproxy_process_relative_process_id gauge
haproxy_process_relative_process_id 1
# HELP haproxy_process_uptime_seconds How long ago this worker process was started (seconds)
# TYPE haproxy_process_uptime_seconds gauge
haproxy_process_uptime_seconds 1364
...

2. DataKit 采集器配置¶

2.1 安装 DataKit ¶

2.2 配置采集器¶

由于Haproxy能够直接暴露metrics url，所以可以直接通过prom采集器进行采集。

进入 DataKit 安装目录下的 conf.d/prom ，复制 prom.conf.sample 为 haproxy.conf。

cp prom.conf.sample haproxy.conf

调整haproxy.conf内容如下：

  urls = ["http://localhost:8405/metrics"]

  source = "haproxy"

  ## Keep Exist Metric Name
  ## If the keep_exist_metric_name is true, keep the raw value for field names.
  keep_exist_metric_name = true

  interval = "10s"

其他配置按需调整

，调整参数说明：

urls：haproxy指标地址，这里填写对应组件暴露出来的指标 url
source：采集器别名，建议做区分
keep_exist_metric_name: 保持指标名称
interval：采集间隔

3. 重启 DataKit¶

重启 DataKit

指标¶

haproxy 指标集¶

Metrics	描述	单位
`haproxy_backend_bytes_in_total`	`后端总字节入`	byte
`haproxy_backend_bytes_out_total`	`后端总字节出`	byte
`haproxy_backend_client_aborts_total`	`后端客户端中断总数`	count
`haproxy_backend_connect_time_average_seconds`	`后端平均连接时间秒数`	seconds
`haproxy_backend_connection_attempts_total`	`后端连接尝试总数`	count
`haproxy_backend_connection_errors_total`	`后端连接错误总数`	count
`haproxy_backend_connection_reuses_total`	`后端连接重用总数`	count
`haproxy_backend_current_queue`	`后端当前队列`	count
`haproxy_backend_current_sessions`	`后端当前会话数`	count
`haproxy_backend_internal_errors_total`	`后端内部错误总数`	count
`haproxy_backend_loadbalanced_total`	`后端负载均衡总数`	count
`haproxy_backend_max_queue`	`后端最大队列`	count
`haproxy_backend_max_sessions`	`后端最大会话数`	count
`haproxy_backend_requests_denied_total`	`后端请求被拒绝总数`	count
`haproxy_backend_response_errors_total`	`后端响应错误总数`	count
`haproxy_backend_responses_denied_total`	`后端响应被拒绝总数`	count
`haproxy_backend_retry_warnings_total`	`后端重试警告总数`	count
`haproxy_backend_server_aborts_total`	`后端服务器中断总数`	count
`haproxy_backend_sessions_total`	`后端会话总数`	count
`haproxy_frontend_bytes_in_total`	`前端总字节入`	byte
`haproxy_frontend_bytes_out_total`	`前端总字节出`	byte
`haproxy_frontend_connections_total`	`前端连接总数`	count
`haproxy_frontend_current_sessions`	`前端当前会话数`	count
`haproxy_frontend_denied_connections_total`	`前端拒绝连接总数`	count
`haproxy_frontend_denied_sessions_total`	`前端拒绝会话总数`	count
`haproxy_frontend_intercepted_requests_total`	`前端拦截请求总数`	count
`haproxy_frontend_internal_errors_total`	`前端内部错误总数`	count
`haproxy_frontend_limit_session_rate`	`前端限制会话速率`	count
`haproxy_frontend_limit_sessions`	`前端限制会话数`	count
`haproxy_frontend_max_sessions`	`前端最大会话数`	count
`haproxy_frontend_request_errors_total`	`前端请求错误总数`	count
`haproxy_frontend_requests_denied_total`	`前端请求被拒绝总数`	count
`haproxy_frontend_responses_denied_total`	`前端响应被拒绝总数`	count
`haproxy_frontend_sessions_total`	`前端会话总数`	count
`haproxy_server_bytes_in_total`	`服务器总字节入`	byte
`haproxy_server_bytes_out_total`	`服务器总字节出`	byte
`haproxy_server_response_errors_total`	`服务器响应错误总数`	count
`haproxy_server_response_time_average_seconds`	`服务器平均响应时间秒数`	seconds
`haproxy_server_responses_denied_total`	`服务器响应被拒绝总数`	count
`haproxy_server_retry_warnings_total`	`服务器重试警告总数`	count
`haproxy_server_safe_idle_connections_current`	`服务器当前安全空闲连接数`	count
`haproxy_server_server_aborts_total`	`服务器服务器中断总数`	count
`haproxy_server_sessions_total`	`服务器会话总数`	count
`haproxy_server_used_connections_current`	`服务器当前已用连接数`	count
`haproxy_server_uweight`	`服务器非权重`	count
`haproxy_server_weight`	`服务器权重`	count

更多指标说明，参考 haproxy 官方文档。