[Samba] Problems after migration from samba 3.5.2 to samba 4.3.1

[Rowland penny]

On 15/02/16 12:40, Fernando Favero wrote:
> Hello,
>
>
> 3 months ago, I migrated my domain from samba 3.5.2 (NT4 with LDAP) to
> samba 4.3.1 (compiled from source) following classic upgrade instructions
> on wiki page. The samba 4.3.1 is using Samba Internal DNS.
>
> 20.000 users and 2.800 computers were migrated.
>
> After the migration process, I joined 1 new DC server and 2 File Servers to
> domain.
>
> All users can login on domain, but we have some issues.
>
>
> 1 – “wbinfo -u” doesn't show users, but “wbinfo -g” show groups normally
>
> 2 – On DC servers, samba process listen ports 135 and 1024 is using 100% of
> CPU
>
> 3 – On DC servers, samba process listen ports 464 and 88 are using ~ 50% of
> CPU
>
> 4 – On File Servers, run a “ls -l” on directories with user/groups
> permissions from domain is very slow
>
> 5 – Sometimes, file servers lost connections to winbind process.
>
> wbinfo -t
>
> checking the trust secret for domain UEL.BR via RPC calls failed
>
> failed to call wbcCheckTrustCredentials: WBC_ERR_WINBIND_NOT_AVAILABLE
>
> Could not check secret
>
>
> I have tried to find wath is wrong, but not found the solution yet.
>
>
> Can someone help me ?

We can certainly try, but it will probably help if you can post your 
smb.conf files from the various Samba machines.

Rowland