#!/usr/bin/bash
#
# Send stdout of some commands to monitoring server.
# Collect the reports with 'nc -u -k -l 1234' on 'sendto'.
# Use /bin/nc.openbsd, /bin/nc.traditional seems not to work.
#
set -eu

sendto="collector.steinbeis.schule 1234"

cmds=(
    'uname -a'
    'uptime'
    'apt list --upgradeable -o Apt::Cmd::Disable-Script-Warning=true'
    'systemctl --failed'
    'w'
    'ls -ld /home/ansible/.ansible/tmp/'
    'ip addr show'
)

r="$HOSTNAME: ------- $(date) -------
$(for c in "${cmds[@]}" ; do echo "$c"; $c | sed 's/^/  /' ; done | sed "s/^/$HOSTNAME: /")
## -------------------------------------------------"
echo "$r" | nc -w 1 -u $sendto


## below is the corresponding collector part:

# #!/usr/bin/bash
# #
# # collect messages from reporter and drop it into log files
# #
#
# set -eu
#
# port=1234
#
# logdir="/var/log/collector"
# [[ -d "$logdir" ]] || mkdir "$logdir"
#
# nc -k -l -u -p "$port" | while read line ; do
#     sndr="${line%%:*}"
#     msg="${line#*: }"
#     if [[ "$sndr" =~ [a-z0-9]+ ]] ; then
#         if [[ "$msg" =~ ^-------\ .+\ -------$ ]] ; then
#             echo "$msg" >  "$logdir/$sndr"
#         else
#             echo "$msg" >> "$logdir/$sndr"
#         fi
#     fi
# done