I have an unprivileged container with Ubuntu 18.04 with autossh for remote port forwarding.
Everything worked fine until I tried to bind mount a NFS disk (mounted to host) to the container with uid=33 gid=33. What is curious, everything worked for a while but then a user reported that he cannot access to that disk. And indeed, it was mounted now in the container as nobody uid/gid.
In the process of debugging, I removed the bind mount and rebooted the container. After reboot su stopped working:
setgid: Operation not permitted
I have rebooted the container and done lxd init --auto but nothing works. I have several almost identical containers where su definitely works.
As this is a production container I am in a state of panic. Please help!
$ lxc config show nutslxc --expanded
architecture: x86_64
config:
boot.autostart: "1"
image.architecture: amd64
image.description: Ubuntu bionic amd64 (20190118_07:43)
image.os: Ubuntu
image.release: bionic
image.serial: "20190118_07:43"
raw.idmap: |
uid 42000 0
gid 42000 0
uid 1100 1100
gid 1100 1100
volatile.base_image: 0c82dce424ee4180b461439b35482c1dac67737ef7999a92099a3f9cecca527b
volatile.eth0.hwaddr: 00:16:3e:3f:5e:f8
volatile.idmap.base: "0"
volatile.idmap.next: '[{"Isuid":true,"Isgid":true,"Hostid":42000,"Nsid":0,"Maprange":1},{"Isuid":true,"Isgid":false,"Hostid":100001,"Nsid":1,"Maprange":1099},{"Isuid":true,"Isgid":true,"Hostid":1100,"Nsid":1100,"Maprange":1},{"Isuid":true,"Isgid":true,"Hostid":101101,"Nsid":1101,"Maprange":998899},{"Isuid":true,"Isgid":true,"Hostid":42000,"Nsid":0,"Maprange":1},{"Isuid":false,"Isgid":true,"Hostid":100001,"Nsid":1,"Maprange":1099},{"Isuid":true,"Isgid":true,"Hostid":1100,"Nsid":1100,"Maprange":1},{"Isuid":true,"Isgid":true,"Hostid":101101,"Nsid":1101,"Maprange":998899}]'
volatile.last_state.idmap: '[{"Isuid":true,"Isgid":true,"Hostid":42000,"Nsid":0,"Maprange":1},{"Isuid":true,"Isgid":false,"Hostid":100001,"Nsid":1,"Maprange":1099},{"Isuid":true,"Isgid":true,"Hostid":1100,"Nsid":1100,"Maprange":1},{"Isuid":true,"Isgid":true,"Hostid":101101,"Nsid":1101,"Maprange":998899},{"Isuid":true,"Isgid":true,"Hostid":42000,"Nsid":0,"Maprange":1},{"Isuid":false,"Isgid":true,"Hostid":100001,"Nsid":1,"Maprange":1099},{"Isuid":true,"Isgid":true,"Hostid":1100,"Nsid":1100,"Maprange":1},{"Isuid":true,"Isgid":true,"Hostid":101101,"Nsid":1101,"Maprange":998899}]'
volatile.last_state.power: RUNNING
devices:
eth0:
name: eth0
nictype: bridged
parent: lxdbr0
type: nic
home-nutslxc:
path: /home
source: /srv/raid/homes/nutslxc
type: disk
nutslxcshare:
path: /not_lp
source: /srv/tuorla_01/not_lp
type: disk
root:
path: /
pool: lxdpool1
type: disk
shared-nutslxc:
path: /srv/shared
source: /srv/raid/homes/shared
type: disk
ssd-nutslxc:
path: /srv/ssd
source: /srv/ssd/nutslxc
type: disk
ephemeral: false
profiles:
- default
stateful: false
description: ""