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

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 
Code:
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!
  Reply
#2
Hello,

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:


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

  Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  TOSILOCK for CONTAINER COswald 3 2,184 July-13th-2021, 11:32 AM
Last Post: Armin@netPI
  Access to RTC from my own container application tad 1 3,521 March-19th-2021, 02:58 PM
Last Post: Armin@netPI
  [SOLVED] Starting services/commands/scripts at startup of a container Jonas.Sellmann@outlook.de 9 6,038 March-9th-2021, 08:47 AM
Last Post: WalterSchaefer
  OpenVPN container Armin@netPI 0 1,615 January-3rd-2021, 12:13 PM
Last Post: Armin@netPI
  operating Console of a container on netPI connected to Wi-Fi tethering tad 3 2,612 December-3rd-2020, 12:32 PM
Last Post: tad
  NIOT-E-NPIX-4DI4DO with netpi-netx container WalterSchaefer 3 6,478 November-25th-2020, 01:06 PM
Last Post: zen89
  NPIX-4DI4DO and NetPi-Nodered container issues alhammi 4 7,586 November-16th-2020, 01:35 PM
Last Post: alhammi
  Get host MAC via REST API inside container bschandra 4 3,641 November-16th-2020, 09:26 AM
Last Post: bschandra
  Exporting and importing container images Armin@netPI 3 3,067 May-20th-2020, 11:24 AM
Last Post: COswald
Exclamation Creating a container Linnerz 6 4,430 March-6th-2020, 02:47 PM
Last Post: Armin@netPI

Forum Jump:


Users browsing this thread: 2 Guest(s)