Own check for monitoring total disk usage of a host not working

Troubleshooting
11

Thank you for finding the typo.
I fixed it, but still no service check

Something must still be wrong.

the agent output looks like this:

#!/bin/sh
echo '<<<filesystem_df_total>>>'
df -h --output=size --total | awk 'END {print $1}'
~

and the file on the monitored host looks like this:

from .agent_based_api.v1 import *

def discover_filesystem_df_total(section):
    yield Service(item="Filesystem total")

register.check_plugin(
    name="filesystem_df_total",
    service_name="%s",
    discovery_function=discover_filesystem_df_total,
    check_function=check_filesystem_df_total,
)

def parse_filesystem_df_total(string_table):
    section=string_table
    return section if section else None

register.agent_section(
    name="filesystem_df_total",
    parse_function=parse_filesystem_df_total,
)