10 月 212014
 

memory监控free不出图的问题分析

[root@labs05 ~]# snmpwalk -v 2c -c public 127.0.0.1 .1.3.6.1.4.1.2021.4.6.0
UCD-SNMP-MIB::memAvailReal.0 = INTEGER: 14184408 kB
[root@labs05 ~]# free
total used free shared buffers cached
Mem: 16280408 2095372 14185036 0 139496 1348900
-/+ buffers/cache: 606976 15673432
Swap: 16777208 0 16777208
[root@labs05 ~]# snmpwalk -v 2c -c public 192.168.150.101 .1.3.6.1.4.1.2021.4.6.0
UCD-SNMP-MIB::memAvailReal.0 = INTEGER: 14855716 kB
[root@labs05 ~]#

[root@labs01 ~]# free
total used free shared buffers cached
Mem: 16280408 1424864 14855544 0 128304 984548
-/+ buffers/cache: 312012 15968396
Swap: 16416760 0 16416760
[root@labs01 ~]#
free 内存大于10G的问题 实际14G

10 000 000

100 000 000
[root@labs05 rra]# rrdtool info h_dev150_101_mem_free_159.rrd
filename = “h_dev150_101_mem_free_159.rrd”
rrd_version = “0003”
step = 300
last_update = 1408672203
ds[mem_free].type = “GAUGE”
ds[mem_free].minimal_heartbeat = 600
ds[mem_free].min = 0.0000000000e+00
ds[mem_free].max = 1.0000000000e+07

cacti-free-nan

修改后原图无变化,删除重新生成后,可见变更
[root@labs05 rra]# rrdtool info h_dev150_101_mem_free_163.rrd |grep .max
ERROR: opening ‘h_dev150_101_mem_free_163.rrd’: No such file or directory
[root@labs05 rra]# rrdtool info h_dev150_101_mem_free_163.rrd |grep .max
ds[mem_free].max = 1.0000000000e+08
[root@labs05 rra]#

[root@labs05 rra]# rrdtool info h_dev150_108_mem_free_173.rrd |grep .max
ds[mem_free].max = 1.0000000000e+08
[root@labs05 rra]# rrdtool info h_dev150_108_mem_buffers_171.rrd |grep .max
ds[mem_buffers].max = 1.0000000000e+08
[root@labs05 rra]# rrdtool info h_dev150_108_mem_cache_172.rrd |grep .max
ds[mem_cache].max = 1.0000000000e+08
[root@labs05 rra]#

cacti-free-ok

方法

Console -> Data Templates -> (Edit)
Data Templates [edit: ucd/net – Memory – Buffers]
Data Templates [edit: ucd/net – Memory – Cache]
Data Templates [edit: ucd/net – Memory – Free]

Maximum Value (‘U’ for No Maximum) 10000000
改 100000000

cacti-memory-10gb-01 cacti-memory-10gb-02 cacti-memory-10gb-03 cacti-memory-10gb-04

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