[lxc-users] setgid error inside container

[Joshua Schaeffer]

Hey guys,

I'm trying to setup my subuid and subgid parameters correctly and I'm clearly doing something wrong as I keep getting "setgid: Invalid argument" when I try to su to my user. I have all my accounts in LDAP and I've connected my container to my infrastruture. It can see users, authenticate with LDAP, Kerberos, etc, I just can't login due to the uid/gid mapping. I'm on LXD 2.15, all my end users have uid's/gid's between 100,000 and 199,999. The LXD container is running under a local user called "lxduser" on the host.

    root at bllldap01:~# getent passwd jschaeffer
    jschaeffer:*:100000:100000:Joshua Schaeffer:/home/jschaeffer:/bin/bash

    root at bllldap01:~# ldapwhoami -Q
    dn:uid=jschaeffer,ou=end users,ou=people,dc=appendata,dc=net

    root at bllldap01:~# ldapsearch -LLLQ -b "uid=jschaeffer,ou=End Users,ou=People,dc=appendata,dc=net" -s base
    dn: uid=jschaeffer,ou=End Users,ou=People,dc=appendata,dc=net
    objectClass: top
    objectClass: account
    objectClass: posixAccount
    uid: jschaeffer
    cn: Joshua Schaeffer
    homeDirectory: /home/jschaeffer
    loginShell: /bin/bash
    gecos: Joshua Schaeffer
    gidNumber: 100000
    uidNumber: 100000

When I try to actually log into the users I get the setgid error:

    root at bllldap01:~# su - jschaeffer
    setgid: Invalid argument

Here is my /etc/subuid and /etc/subgid files on the LXD host:

    lxduser at blllxd01:~$ cat /etc/sub{uid,gid}
    lxd:100000:1000000
    root:100000:1000000
    lxduser:1065536:1000000
    lxd:100000:1000000
    root:100000:1000000
    lxduser:1065536:1000000

I've restarted lxd.service and restarted all my containers after I made this change. My understanding is, from my uid/gid files, that user 100,000 inside the container should be mapped to 200,000 outside the container. Any help would be appreciated.

Thanks,
Joshua Schaeffer