Timeline for "sudo: unable to allocate pty: No such device" in chrooted Linux
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 17, 2022 at 9:49 | answer | added | user2480415 | timeline score: -1 | |
| Dec 9, 2022 at 11:40 | comment | added | Alex Martian | @muru, seems you have good idea where to look, on LM21 "use_pty, pwfeedback", on where worked (20.2) only "pwfeedback". However I've tried sudo --stdin and IIRC got same result as just sudo. Why? | |
| Dec 9, 2022 at 6:38 | comment | added | muru | What's the output of sudo -l in the chroot where sudo echo a worked? | |
| Dec 9, 2022 at 5:36 | comment | added | Alex Martian | same actions done with LM 21 ISO resulted in "sudo: unable to allocate pty: No such device" | |
| Dec 9, 2022 at 5:28 | comment | added | Alex Martian | @muru, clear reperformance: booted from Linux Mint 20.2. Cinnamon 64 bit downloaded ISO (via Ventoy replacing quiet splash with toram with legacy boot to be exact, then (optional? - later noted it was mounted after boot already) re-plugged USB to get access to ISO file from system, double-click on ISO file, mounted to say path1. Start terminal Ctrl-Alt-t. 2) mkdir ~/lm ; mount $path1/casper/filesystem.squashfs ~/lm 3) chroot ~/lm /bin/bash 4) sudo echo a output "a" Please let me know if this reperformance is acceptable to you. | |
| Dec 9, 2022 at 3:57 | comment | added | muru | Can you reproduce that sudo worked in a chroot without these mounts at all? I don't think it has ever worked that way for me. | |
| Dec 9, 2022 at 3:48 | comment | added | Alex Martian | @muru, thanks, it is relevant, I learned couple of things from it and updated the question. However it does not explain under-the hood much and I still want to understand why in one case sudo worked and not the other (both cases started with no mentioned in the answer mounts). | |
| Dec 9, 2022 at 3:44 | history | edited | Alex Martian | CC BY-SA 4.0 | added 665 characters in body |
| Dec 9, 2022 at 3:21 | review | Close votes | |||
| Dec 16, 2022 at 3:04 | |||||
| Dec 9, 2022 at 3:06 | comment | added | muru | Does this answer your question? Which of proc, sys etc. should be bind-mounted (or not) when chrooting into a "replacement" distribution? | |
| Dec 9, 2022 at 3:02 | history | edited | muru | CC BY-SA 4.0 | added 6 characters in body |
| Dec 9, 2022 at 2:46 | history | edited | Alex Martian | CC BY-SA 4.0 | added 57 characters in body |
| Dec 9, 2022 at 2:40 | history | asked | Alex Martian | CC BY-SA 4.0 |