Need help in Haproxy socat for cacti

Question

am using the haproxy socat to get the sessions data to plot it in cacti, /var/run/socket-haproxy is owned by www-data (the user which cacti uses) but when I try to execute this command as www-data am getting permission denied, any help would be much appreciated.

sudo su - www-data echo show stat | socat unix-connect:/var/run/socket-haproxy stdio | grep inbound | cut -d, -f 5
2012/01/11 15:58:18 socat[5448] E connect(3, AF=1 "/var/run/socket-haproxy", 25): Permission denied
-su: Can't open echo

Answer 1

So the issue is your pipes.. What you are doing is echoing show stat as the www-data user but running socat as your own user. Need to wrap it in quotes

Also your sudo is completely wrong to run a command as a user

For example

# sudo -u www-data id
uid=33(www-data) gid=33(www-data) groups=33(www-data)

You don't need the extra su in there since you are already root I assume anyway

If you are already root just use su. Something like this

su -c "echo show stat | socat unix-connect:/var/run/socket-haproxy stdio | grep inbound | cut -d, -f 5" www-data