Q: I followed the instructions for adding debian packages to my system, but will those packages be lost when I upgrade to a new image?
A: Yes, the upgrade creates a new filesystem. One approach that I use is to putting the following script in /config/scripts/post-config.d/
ubnt@RTR5:/config/scripts/post-config.d$ cat install_my_packages.sh #!/bin/bash doneit='/var/lib/my_packages' packages='screen rsync iftop iptraf mtr-tiny bmon' if [ -e $doneit ]; then exit 0; fi apt-get update apt-get install -y $packages if [ $? == 0 ]; then echo package install successful touch $doneit else echo package install failed fi exit 0
Things to note:
- The entire /config directory gets copied to the new image, so that's a good place to put things like scripts, openvpn keys, etc.
- Every executable in /config/scripts/post-config.d directory get run after boot-up and configuration is complete. This script creates a file when upon completion, so it should only try to fetch the packages once.
Q: Since the system keeps 2 images, how do I switch back to the old image?
A: See the section on switching images at EdgeMAX image management.
Q: Can I find a file on the old image without rebooting into it?
A: Yes, the old filesystem can be found at /root.dev/w.o/