Is there a way to make rrdgraph read the graph specification from a file
rather than command-line arguments?
Specifically, given a list of hosts and rrds, for each rrd, I create an
include file that defines a CDEF of the sum of that counter over all
hosts. I then compose these includes to define higher level CDEFs, which
can grow quite large when you're talking about hundreds of hosts:
rrd_include$ wc *
1 288 27791 5runq
0 288 34678 disk_rd_per_s
0 288 34678 disk_wr_per_s
0 288 33817 if_in_p_eth0
0 288 34678 if_out_p_eth0
1 287 25899 nboxes
1 288 27791 ncpus
0 288 30373 nice_pct
0 288 33817 swp_used_pct
0 288 29512 sys_pct
0 288 29512 usr_pct
3 3167 342546 total
For example, if I try to define
CDEF:utilization=nice,user,+,system,+,num_boxes,/,runq,num_cpus,/,/
this overflows a limit somewhere, whereas
CDEF:utilization=nice,num_boxes,/,runq,num_cpus,/,/
does not.
Have a good weekend,
George Coulouris
NCBI Contractor
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