_zabbix-api-spark.md

Output:

$ ./cpu-load-hist.get.sh 
Zabbix.org: Processor load
▂▄▇█▄▆▄▃▂▂▁▁▁▁▂▄▂▃▂▂▂▁▁▁▂▂▁▂▁▁▂▁▃▂▃▃▂▁▁▁▂▂▆▅▄▂▂▂▂▂▂▂▁▁▁▄▄▄▃▁

cpu-load-hist.get.sh

#!/bin/sh

# CLI Visual Zabbix perf
# Dependencies (NB)
#  * spark: https://raw.github.com/holman/spark/master/spark

auth='ac905749516dd173668f3dbf7b0cac0a'

getjson()
{
    # $1 == itemid
    # returns JSON string

    start=$(date +%s --date='- 1 hour')
    stop=$(date +%s --date='+ 10 sec')

    json=$(cat <<EOF
{
    "jsonrpc": "2.0",
    "method": "history.get",
    "params":{
        "output":"extend",
        "history":0,
        "time_from":"${start}",
        "time_till":"${stop}",
        "itemids":["$1"]
    },
    "id": 123,"auth":"${auth}"
}
EOF
)
    echo $json
}

showdata()
{
    # $1 == itemid
    json=$(getjson $1)
    curl -s -H "Content-type: application/json" "https://www.zabbix.org/zabbix/api_jsonrpc.php" -d "${json}"  \
     | grep -o "\"value\":\"[0-9\.]*\"," \
     | awk -F\" '{print $4*100}' \
     | spark
}

echo "Zabbix.org: Processor load"
showdata '16'

https://github.com/holman/spark/wiki/Wicked-Cool-Usage#zabbix-api-history-graph-results-christianchristensen