mtail 日志采集

/foo/ {
ACTION1
} else {
ACTION2
}

/foo/ {
  /foo1/ {
     ACTION1
  }
  /foo2/ {
     ACTION2
  }
  otherwise {
     ACTION3
  }
}

/(?P<operation>\S+) (\S+) \[\S+\] (\S+) \(\S*\) \S+ (?P<bytes>\d+)/ {
  bytes_total[$operation][$3] += $bytes
}

# test.mtail
# 定义常量label env
hidden text env
# 给label 赋值 这样定义是global范围;
# 局部添加，则在对应的condition中添加
env="production"
counter line_total by logfile,env
/^(?P<date>\w+\s+\d+\s+\d+:\d+:\d+)/ {
    line_total[getfilename()][env]++
}

获取到的metrics中会添加上env=production的label 如下：
# metrics
line_total{env="production",logfile="/path/to/xxxx.log",prog="test.mtail"} 4 1661165941788

/(?P<x>\d+)/ && $x > 1 {
nonzero_positives++
}

不显示处理，则默认使用系统时间

默认emit_metric_timestamp=“false”(注意是字符串)

http_latency_bucket{prog="histo.mtail",le="1"} 0
http_latency_bucket{prog="histo.mtail",le="2"} 0
http_latency_bucket{prog="histo.mtail",le="4"} 0
http_latency_bucket{prog="histo.mtail",le="8"} 0
http_latency_bucket{prog="histo.mtail",le="+Inf"} 0
http_latency_sum{prog="histo.mtail"} 0
http_latency_count{prog="histo.mtail"} 0


参数 emit_metric_timestamp=“true”(注意是字符串)
http_latency_bucket{prog="histo.mtail",le="1"} 1 1661152917471
http_latency_bucket{prog="histo.mtail",le="2"} 2 1661152917471
http_latency_bucket{prog="histo.mtail",le="4"} 2 1661152917471
http_latency_bucket{prog="histo.mtail",le="8"} 2 1661152917471
http_latency_bucket{prog="histo.mtail",le="+Inf"} 2 1661152917471
http_latency_sum{prog="histo.mtail"} 3 1661152917471
http_latency_count{prog="histo.mtail"} 4 1661152917471


使用日志的时间
Aug 22 15:28:32 GET /api/v1/pods latency=2s code=200
Aug 22 15:28:32 GET /api/v1/pods latency=1s code=200
Aug 22 15:28:32 GET /api/v1/pods latency=0s code=200
histogram http_latency buckets 1, 2, 4, 8
/^(?P<date>\w+\s+\d+\s+\d+:\d+:\d+)/ {
        strptime($date, "Jan 02 15:04:05")
	/latency=(?P<latency>\d+)/ {
		http_latency=$latency
	}
}