• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[SOLVED] Unique identifier in container

I was wondering what the best way to obtain an unique identifier from within a docker container running on the netPI core 3. I'm using the netpi raspbian image and use the command 
cat /proc/cpuinfo | grep Serial | cut -d ' ' -f 2

to read the serial, similar as I would on a regular Raspberry Ri. Is this id unique to the hardware or does it belong to the container? Is there any other unique identifier for the netPI core 3 available which is better than the one i obtain? Also, i notices that the id which you get by doing this contains the 6 last characters of the MAC-addr of the device and two additional characters which seem random. Are these random or is there a logical way to figure them out without using the command above?
Thank you!

this ID you are referencing is the serial number of the BCM CPU chip.

The chip's serial number and other informations like the MAC address are stored into the CPU's One-Time Programmable (OTP) memory block at the time the chips were produced.

So it is not the ID of the container it is a unique ID of your specific netPI CORE 3 hardware.

Getting the outside ID of the container in an application that runs within the containers works with this command for example:

head -1 /proc/self/cgroup|cut -d/ -f3
You never fail until you stop trying.“, Albert Einstein (1879 - 1955)


Possibly Related Threads...
Thread Author Replies Views Last Post
  Exporting and importing container images Armin@netPI 3 46 May-20th-2020, 11:24 AM
Last Post: COswald
Exclamation Creating a container Linnerz 6 40 March-6th-2020, 02:47 PM
Last Post: Armin@netPI
  [SOLVED] activate LED1/2 with Node-RED + fieldbus nodes container Christian_Rau 6 97 October-21st-2019, 10:30 AM
Last Post: Armin@netPI
  Cannot start container Magnus 7 43 October-16th-2019, 01:00 PM
Last Post: Armin@netPI
  Generate VLAN interfaces in container FrankJacob 7 46 September-26th-2019, 03:19 PM
Last Post: Armin@netPI
  create container in Portainer v1.12.4 dcatteeu 2 26 September-9th-2019, 12:12 PM
Last Post: dcatteeu
  UMTS/LTE support via USB router/modem sticks in a container Armin@netPI 3 159 September-5th-2019, 02:07 PM
Last Post: Armin@netPI
  Ready-to-deploy: full featured Node-RED container Armin@netPI 5 89 July-25th-2019, 06:16 AM
Last Post: Armin@netPI
  New Container example "OPC UA server" Armin@netPI 0 25 April-12th-2019, 11:51 AM
Last Post: Armin@netPI
  Official Node-RED container Armin@netPI 0 21 April-5th-2019, 10:39 AM
Last Post: Armin@netPI

Forum Jump:

Users browsing this thread: 1 Guest(s)