Cannot edit readonly config file for telegraf package

fruitbat · October 20, 2021, 3:04am

I have installed the telegraf snap on mint 20.1 - I dont know how I am supposed to edit the telegraf.conf config file (usually installed in /etc/).

I have found an instance of it at /snap/telegraf/325/etc/telegraf.conf …but that is readonly.

…is there some place where documentation pertaining to specific snaps is typically kept ?

ogra · October 20, 2021, 6:54am

try the file in

/var/snap/telegraf/current/etc/

striep · November 5, 2022, 7:56pm

Hi,

I know this thread is over a year old, but the title is exactly what I’m facing. I installed the telegraf snap on Raspbian GNU/Linux 11 (bullseye) via

root@raspi # snap install telegraf --classic

I tried to edit the (only) configuration file at /snap/telegraf/468/etc/telegraf.conf, but that is read only.

root@raspi:~# find / -name telegraf.conf
/snap/telegraf/468/etc/telegraf.conf

There is no config file under the path mentioned by ‘ogra’.

Any suggestions apart from removing the snap?

ogra · November 5, 2022, 9:33pm

the configure hook (which runs at snap install time) seems to copy it in place:

github.com

sajoupa/telegraf-snap/blob/master/hooks/configure#L4


#!/bin/sh
# Copy the config file if needed, update permissions, and create telegraf.d
cp -pn $SNAP/etc/telegraf.conf $SNAP_DATA/telegraf.conf
mkdir -p $SNAP_DATA/telegraf.d
chown --quiet snap_daemon: $SNAP_DATA/telegraf.conf $SNAP_DATA/telegraf.d $SNAP_DATA/telegraf.d/*.conf
chmod --quiet 640 $SNAP_DATA/telegraf.conf $SNAP_DATA/telegraf.d/*.conf
chmod 755 $SNAP_DATA/telegraf.d

are you sure there is nothing in /var/snap/telegraf/current/ ?

striep · November 6, 2022, 8:37am

yes, as you can see here:

root@raspi:~# ls -l /var/snap/telegraf/current
lrwxrwxrwx 1 root root 3 Nov  5 20:37 /var/snap/telegraf/current -> 468
root@raspi:~# ls -l /var/snap/telegraf/current/
total 0
root@raspi:~# ls -l /var/snap/telegraf/468/
total 0