我正在监控超过300台服务器,因为我正在使用Ganglia。
其中使用RRD
作为数据库来收集和存储与每个服务器的资源相关的数据。
我希望有2年或更长的历史记录,所以请阅读article,我认为我的RRA
配置应该是:
RRAs "RRA:AVERAGE:0.5:1:17520"
17520 =(365天[年] x 2)* 24 [小时]
这是Ganglia默认配置,今天正在运行:
#
# Round-Robin Archives
# You can specify custom Round-Robin archives here (defaults are listed below)
#
# RRAs "RRA:AVERAGE:0.5:1:244" "RRA:AVERAGE:0.5:24:244" "RRA:AVERAGE:0.5:168:244" "RRA:AVERAGE:0.5:672:244" \
# "RRA:AVERAGE:0.5:5760:374"
#
这是我的思维方式还是我错过了什么?
答案 0 :(得分:21)
在研究了这个主题一段时间之后,我想出了一个可能在将来帮助某人的答案。我多次阅读这两篇文章,我建议这样做。 首先阅读本文,Creating an initial RRD然后阅读本文。 How to create an RRDTool database:
我会尽力解释一下。格式RRA:CF:xff:steps:rows
:
RRA: Round Robin Archive
CF: Consolidation Factor
XFF: Xfile Factor
steps
rows
对我来说,最大的问题是发现steps
和rows
的正确价值。
看完后,我想出了这个解释:
1 day - 5-minute resolution
1 week - 15-minute resolution
1 month - 1-hour resolution
1 year - 6-hour resolution
RRA:AVERAGE:0.5:1:288 \
RRA:AVERAGE:0.5:3:672 \
RRA:AVERAGE:0.5:12:744 \
RRA:AVERAGE:0.5:72:1480
请注意,我们的step
为300 seconds
,因此这个想法非常简单:
如果我想要解析one day
86400 seconds
,如第一个示例所示,我需要多少行?答案是288 rows
。为什么?
`86400 seconds [1 day] / 300 seconds [5 minutes`] = 288 rows
另一个例子,如果我想解决:
在15分钟内[ = 604800 seconds ]
= 604800/900 = [ = 900 seconds ]
672 rows
所以继续其他的价值观。这样您就可以了解需要多少rows
。
找出你需要多少steps
非常简单,你只需要采取步骤的倍数。
让我解释一下:我们的steps
是300 seconds
,对吧?
因此,如果我们要解决5分钟[ = 300 seconds ]
,我们只需要乘以1,对吧?
所以,15分钟意味着300秒x 3,1小时意味着300 x 12,6小时意味着300 x 72,依此类推。
在我的具体案例中,我希望steps
成为30 seconds
,所以我想出了这些结构:
1 every time 30 seconds 1 * 30s = 30s
2 every second time 1 minute 2 * 30s = 1m
4 every third time 2 minutes 4 * 30s = 2m
10 every 10th time 5 minutes 10 * 30s = 5m
20 every 20th time 10 minutes 20 * 30s = 10m
60 every 60th time 30 minutes 60 * 30s = 30m
80 every 80th time 40 minutes 80 * 30s = 40m
100 every 100th time 50 minutes 100 * 30s = 50m
120 every 120th time 1 hour 120 * 30s = 1h
240 every 240th time 2 hours 240 * 30s = 2h
360 every 360th time 3 hours 360 * 30s = 3h
RRA:AVERAGE:0.5:1:120 \
RRA:AVERAGE:0.5:2:120 \
RRA:AVERAGE:0.5:4:120 \
RRA:AVERAGE:0.5:10:288 \
RRA:AVERAGE:0.5:20:1008 \
RRA:AVERAGE:0.5:60:1440 \
RRA:AVERAGE:0.5:80:3240 \
RRA:AVERAGE:0.5:100:5184 \
RRA:AVERAGE:0.5:120:8760 \
RRA:AVERAGE:0.5:240:8760 \
RRA:AVERAGE:0.5:360:8760 \
这意味着:
1 hour - 30 seconds resolution
2 hours - 1 minute resolution
4 hours - 2 minutes resolution
1 day - 5 minutes resolution
1 week - 10 minutes resolution
1 month - 30 minutes resolution
3 months - 40 minutes resolution
6 months - 50 minutes resolution
1 year - 1 hour resolution
2 year - 2 hour resolution
3 year - 3 hour resolution
嗯,我希望这有助于某人,就是这样。