How to change default paths

thin-edge.io directories

The tedge config set command can be used to change various file system paths used by tedge components. The following table captures the paths that can be changed, with their default locations.

Config Key	Description	Default Value
tmp.path	Directory where temporary files are created/stored. E.g: while downloading files	/tmp
logs.path	Directory where log files are created	/var/log
run.path	Directory where runtime information are stored	/run
data.path	Directory where data files are stored. E.g: Cached binary files, operation metadata etc	/var/tedge

The following daemons also need to be re-started after data.path is updated:

• tedge-configuration-plugin
• c8y-firmware-plugin

Example: Set a custom temporary directory path

The following shows how to change the temp directory used by thin-edge.io and its components.

1. Create a new directory which will be used by thin-edge.io

   # create a directory (with/without sudo)
   mkdir ~/tedge_tmp_dir
   
   # give ownership to tedge user and group
   sudo chown tedge:tedge ~/tedge_tmp_dir 

2. Update the tedge configuration to point to the newly created directory

   Example

   sudo tedge config set tmp.path ~/tedge_tmp_dir
   info

   The directory must be available to tedge user and tedge group.

3. Restart the tedge daemons after any of these paths are updated, for it to take effect.

   sudo systemctl restart tedge-agent

Example: Revert custom path settings

To revert any of these paths back to their default locations, unset that config as follows:

sudo tedge config unset tmp.path

Then restart the relevant services.

sudo systemctl restart tedge-agent