SNMP : Convert a character string in number

[caledonien]

Hello,

Do you have a method to convert a character string in number, without using an external script?

Example:

/usr/bin/snmpget -Ov -v  1 -c public ${HOST} .1.3.6.1.4.1.24681.1.2.1.0

Gives: STRING: "1.9%"

To use it in Zabbix, I must go through an external script to not only keep the numbers

echo $(/usr/bin/snmpget -Ov -v  1 -c public ${HOST} .1.3.6.1.4.1.24681.1.2.1.0  | /bin/sed "s/[^0-9.]//g")

Gives: 1.9

The use of external scripts a lot of resource, as far as possible I can do without.

thank you for your help and thank you for having created Zabbix

[marcel]

Hello,

Do you have a method to convert a character string in number, without using an external script?

Example:

/usr/bin/snmpget -Ov -v  1 -c public ${HOST} .1.3.6.1.4.1.24681.1.2.1.0

Gives: STRING: "1.9%"

To use it in Zabbix, I must go through an external script to not only keep the numbers

echo $(/usr/bin/snmpget -Ov -v  1 -c public ${HOST} .1.3.6.1.4.1.24681.1.2.1.0  | /bin/sed "s/[^0-9.]//g")

Gives: 1.9

The use of external scripts a lot of resource, as far as possible I can do without.

thank you for your help and thank you for having created Zabbix

use a native SNMP item in zabbix

[caledonien]

Zabbix return :

Type of received value [1.9 %] is not suitable for value type [Numeric (float)]

[gdnet]

Had the same issue with version 1.8.5

Found out the problem lies within the file "src/libs/zbxcommon/misc.c"
currently it does not accept any characters in the snmp string. Only digit.
I had to modify it to stop when it detects an illegal character but still do the conversion.

See the code below.

int     is_uint64(const char *str, zbx_uint64_t *value)
{
        register zbx_uint64_t   max_uint64 = ~(zbx_uint64_t)__UINT64_C(0);
        register zbx_uint64_t   value_uint64 = 0, c;
        const char *start = str;
        while ('\0' != *str)
        {
                if (*str >= '0' && *str <= '9')
                {
                        c = (zbx_uint64_t)(unsigned char)(*str - '0');
                        if ((max_uint64 - c) / 10 >= value_uint64)
                                value_uint64 = value_uint64 * 10 + c;
                        else
                                return FAIL;    /* overflow */
                        str++;
                }
                else if (str == start) {
                        return FAIL;    /* not a digit */
                }
                else {
                     break;
                }
        }

        if (NULL != value)
                *value = value_uint64;

        return SUCCEED;
}

[Pada]

Zabbix 2.1.0 still does not convert String to Int/Float

I have just upgraded to 2.1.0 and I'm still having the same issue where Zabbix won't convert the string to a decimal/float value, which is very annoying!

[server:temperature] became not supported: Received value [42.5 degrees C] is not suitable for value type [Numeric (float)]

Will the base Zabbix installation/source ever do this kind of conversion?
If not, then I'll probably just modify gdnet's code to also do negative and floating point numbers too.

Currently I'm using marcel's Zabbix agent solution, but that isn't always an option for me, seeing that some of our devices aren't running an OS where I can install/run Zabbix Agent...

[Jass]

Hello,

Seems in 2.4 problem still not solved?

I'm have same problem with Alteon OID: ALTEON-ROOT-MIB::aws-switch.1.2.12.4.0 = STRING: "8 CPS"