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diff --git a/web/api/exporters/shell/README.md b/web/api/exporters/shell/README.md new file mode 100644 index 0000000..ab412eb --- /dev/null +++ b/web/api/exporters/shell/README.md @@ -0,0 +1,66 @@ +# shell exporter + +Shell scripts can now query netdata: + +```sh +eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')" +``` + +after this command, all the netdata metrics are exposed to shell. Check: + +```sh +# source the metrics +eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')" + +# let's see if there are variables exposed by netdata for system.cpu +set | grep "^NETDATA_SYSTEM_CPU" + +NETDATA_SYSTEM_CPU_GUEST=0 +NETDATA_SYSTEM_CPU_GUEST_NICE=0 +NETDATA_SYSTEM_CPU_IDLE=95 +NETDATA_SYSTEM_CPU_IOWAIT=0 +NETDATA_SYSTEM_CPU_IRQ=0 +NETDATA_SYSTEM_CPU_NICE=0 +NETDATA_SYSTEM_CPU_SOFTIRQ=0 +NETDATA_SYSTEM_CPU_STEAL=0 +NETDATA_SYSTEM_CPU_SYSTEM=1 +NETDATA_SYSTEM_CPU_USER=4 +NETDATA_SYSTEM_CPU_VISIBLETOTAL=5 + +# let's see the total cpu utilization of the system +echo ${NETDATA_SYSTEM_CPU_VISIBLETOTAL} +5 + +# what about alarms? +set | grep "^NETDATA_ALARM_SYSTEM_SWAP_" +NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS=CRITICAL +NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_VALUE=53 +NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_STATUS=CLEAR +NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_VALUE=51 + +# let's get the current status of the alarm 'ram in swap' +echo ${NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS} +CRITICAL + +# is it fast? +time curl -s 'http://localhost:19999/api/v1/allmetrics' >/dev/null + +real 0m0,070s +user 0m0,000s +sys 0m0,007s + +# it is... +# 0.07 seconds for curl to be loaded, connect to netdata and fetch the response back... +``` + +The `_VISIBLETOTAL` variable sums up all the dimensions of each chart. + +The format of the variables is: + +```sh +NETDATA_${chart_id^^}_${dimension_id^^}="${value}" +``` + +The value is rounded to the closest integer, since shell script cannot process decimal numbers. + +[]() |