[Samba] Failed to bind to uuid ???

Min Wai Chan dcmwai at gmail.com
Thu Jul 30 11:43:20 UTC 2015 

Dear All,

Recently I notice that sometime the AD DC will die sometime.
Any one have see this issue before?

And yesterday case lead me to believes that this error message was the
issue...
They are repetitive and thus I only show 2...

[2015/07/29 00:00:04.620033,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT
[2015/07/29 00:00:09.661698,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT

After some search on the log
Found these type of error start on 18th July
DC1:

[2015/07/18 00:15:38.776972,  0]
../source4/librpc/rpc/dcerpc_sock.c:425(continue_ip_open_socket)
  Failed to connect host 192.168.11.209
(016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net) on port 49155 -
NT_STATUS_CONNECTION_REFUSED.
[2015/07/18 00:15:43.790745,  0]
../source4/librpc/rpc/dcerpc_sock.c:262(continue_socket_connect)
  Failed to connect host 192.168.11.209 on port 49155 -
NT_STATUS_CONNECTION_REFUSED
[2015/07/18 00:15:43.791541,  0]
../source4/librpc/rpc/dcerpc_sock.c:425(continue_ip_open_socket)
  Failed to connect host 192.168.11.209
(016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net) on port 49155 -
NT_STATUS_CONNECTION_REFUSED.
[2015/07/18 00:15:48.937717,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT
[2015/07/18 00:15:53.793168,  2]
../source4/dsdb/repl/drepl_notify.c:199(dreplsrv_notify_op_callback)
  dreplsrv_notify: DsReplicaSync successfuly sent to
8a951b9e-523f-4691-b6b4-f72433534f81._msdcs.kl01.test.net
[2015/07/18 00:15:53.853009,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT
[2015/07/18 00:15:54.802487,  2]
../source4/rpc_server/drsuapi/getncchanges.c:1427(getncchanges_collect_objects)
  ../source4/rpc_server/drsuapi/getncchanges.c:1427: getncchanges on
DC=DomainDnsZones,DC=kl01,DC=test,DC=net using filter (uSNChanged>=53833)
[2015/07/18 00:15:54.823122,  2]
../source4/rpc_server/drsuapi/getncchanges.c:2114(dcesrv_drsuapi_DsGetNCChanges)
  DsGetNCChanges with uSNChanged >= 53833 flags 0x00000074 on
<GUID=fa00dc17-05d5-4a89-a1dd-fcf61a4ad192>;DC=DomainDnsZones,DC=kl01,DC=test,DC=net
gave 2 objects (done 2/2) 0 links (done 0/0 (as
S-1-5-21-3560897929-3766931875-2087304217-3315))
[2015/07/18 00:15:59.896743,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT


DC2

[2015/07/18 00:15:36.448385,  0]
../source4/librpc/rpc/dcerpc_sock.c:425(continue_ip_open_socket)
  Failed to connect host 192.168.11.209
(016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net) on port 49155 -
NT_STATUS_CONNECTION_REFUSED.
[2015/07/18 00:15:41.462328,  0]
../source4/librpc/rpc/dcerpc_sock.c:262(continue_socket_connect)
  Failed to connect host 192.168.11.209 on port 49155 -
NT_STATUS_CONNECTION_REFUSED
[2015/07/18 00:15:41.462640,  0]
../source4/librpc/rpc/dcerpc_sock.c:425(continue_ip_open_socket)
  Failed to connect host 192.168.11.209
(016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net) on port 49155 -
NT_STATUS_CONNECTION_REFUSED.
[2015/07/18 00:15:47.622131,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT
[2015/07/18 00:15:51.511274,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT
[2015/07/18 00:15:54.812400,  2]
../source4/dsdb/repl/replicated_objects.c:944(dsdb_replicated_objects_commit)
  Replicated 2 objects (0 linked attributes) for
DC=DomainDnsZones,DC=kl01,DC=test,DC=net
[2015/07/18 00:15:56.527429,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT
[2015/07/18 00:16:01.538706,  0]
../source4/librpc/rpc/dcerpc_util.c:681(dcerpc_pipe_auth_recv)
  Failed to bind to uuid e3514235-4b06-11d1-ab04-00c04fc2dcd2 for
e3514235-4b06-11d1-ab04-00c04fc2dcd2 at ncacn_ip_tcp
:016bc892-2083-4410-b528-21ded3c2a6c9._msdcs.kl01.test.net[49155,seal,krb5]
NT_STATUS_NET_WRITE_FAULT


But they are working until yesterday..

My Configuration
DC1
/etc/samba/smb.conf
# Global parameters
[global]
        workgroup = TEST-WORKGROUP
        realm = kl01.test.net
        netbios name = TESTSERVER
        server role = active directory domain controller
        server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
winbind, ntp_signd, kcc, dnsupdate
        idmap_ldb:use rfc2307 = yes
        host msdfs = yes

        # DNS Update
        allow dns updates = nonsecure

        #Replicate KCC Connection Object Fis
        kccsrv:samba_kcc = false

        # Log Level
        LOG Level = 2
        max log size = 2000

        # Disable Load printer
        load printers = No

        #SMB2 Enable
        client max protocol = SMB2

        vfs objects = dfs_samba4, acl_xattr

[netlogon]
        path = /var/lib/samba/sysvol/kl01.test.net/scripts
        read only = No

[sysvol]
        path = /var/lib/samba/sysvol
        read only = No
[dfs]
        path = /home/dfsroot
        msdfs root = yes
        vfs objects = dfs_samba4, acl_xattr


DC2
/etc/samba/smb.conf
# Global parameters
[global]
        workgroup = TEST-WORKGROUP
        realm = kl01.test.net
        netbios name = TESTSRV02
        server role = active directory domain controller
        host msdfs = yes

        # DNS Update
        allow dns updates = nonsecure


        # Log Level
        LOG Level = 2
        max log size = 2000

        # Disable Load printer
        load printers = No

        #SMB2 Enable
        client max protocol = SMB2

        vfs objects = dfs_samba4, acl_xattr

[netlogon]
        path = /var/lib/samba/sysvol/kl01.test.net/scripts
        read only = No

[sysvol]
        path = /var/lib/samba/sysvol
        read only = No

[dfs]
        path = /home/dfsroot
        msdfs root = yes
        vfs objects = dfs_samba4, acl_xattr

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