# cat /usr/sbin/smartctl-influx.sh
#!/bin/bash

lsblk | grep disk | while read device _ ; do
        /usr/sbin/smartctl -a /dev/$device \
                | awk -v timestamp=$(date +%s"000000000") '
function after(x) {
        out=""
        for (i=x; i<=NF; i++) out=out" "$i
        return out
}
BEGIN {
        Model="none"
        Serial="none"
}
/^Device Model:/ {
        Model=after(3)
        sub(/^[ \t\r\n]+/, "", Model)
        gsub(" ", "_", Model)
}
/^Serial Number:/ {
        Serial=after(3)
        sub(/^[ \t\r\n]+/, "", Serial)
        gsub(" ", "_", Serial)
}
/^\s*[0-9]+ [a-zA-Z_-]{5,}/ {
        if ( $10 ~ /^[0-9]+$/ )
                Values[$1]=$10
}

END {
        if (Serial != "none") {
                        printf("disk,serial=" Serial ",model=" Model " ")

                        first=1
                        for (value in Values) {
                                        if ( ! first) printf(",")
                                        first=0
                                        printf(value"="Values[value])
                        }
                        printf(" " timestamp "\n")
        }
}
' \
        | while read data ; do
                curl --header "Authorization: Token ..." -X POST 'http://influxdb/write?db=smartctl' --data-binary "$data"
        done
done