Lee Allen
2013-Jan-09 14:32 UTC
[Samba] Samba4 internal DNS not responding to DNS requests
I am not able to get the Samba4 internal DNS server to respond to DNS requests on the network. I am running Samba4 4.1.0pre1-GIT-c1fb37d on my CentOS 6.3 system. I followed the instructions here: wiki.samba.org/index.php/Samba_AD_DC_HOWTO I configured Samba4 to use the internal DNS server. My Samba4 server is 192.168.0.13. Its full hostname is ubuntu-ad.allenlan.net. The realm is ALLENLAN.NET. The DNS testing section of the document passes: $host -t SRV _ldap._tcp.allenlan.net. _ldap._tcp.allenlan.net has SRV record 0 100 389 ubuntu-ad.allenlan.net. $host -t SRV _kerberos._udp.allenlan.net. _kerberos._udp.allenlan.net has SRV record 0 100 88 ubuntu-ad.allenlan.net. $host -t A ubuntu-ad.allenlan.net. ubuntu-ad.allenlan.net has address 192.168.0.13 I configured my Windows XP system with a DNS of 192.168.0.13 (Samba4 server). When I perform the Windows command "nslookup ubuntu-ad.allenlan.net" (or any variation of that) it reports: DNS request timed out. timeout was 2 seconds. *** Can't find server name for address 192.168.0.13: Timed out (above 3 messages repeat again) Default servers are not available Server: UnKnown Address: 192.168.0.13 The Windows system can ping the Samba4 server by IP address. Any help would be appreciated! More configuration information below. /etc/resolv.conf: domain allenlan.net nameserver 192.168.0.13 /usr/local/samba/etc/smb.conf: [global] workgroup = ALLENLAN realm = ALLENLAN.NET netbios name = UBUNTU-AD server role = active directory domain controller dns forwarder = 192.168.0.1 interfaces = 192.168.0.13 127.0.0.1 bind interfaces only = yes log level = 3 server services = smb, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, winbind, ntp_signd, kcc, dnsupdate, dns /etc/hosts: 192.168.0.13 ubuntu-ad ubuntu-ad.allenlan.net 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 $hostname ubuntu-ad.allenlan.net Thank you. Lee Allen
felix at epepm.cupet.cu
2013-Jan-09 14:47 UTC
[Samba] Samba4 internal DNS not responding to DNS requests
> I am not able to get the Samba4 internal DNS server to respond to DNS > requests on the network. > > I am running Samba4 4.1.0pre1-GIT-c1fb37d on my CentOS 6.3 system. I > followed the instructions here: > wiki.samba.org/index.php/Samba_AD_DC_HOWTO > > I configured Samba4 to use the internal DNS server. My Samba4 server is > 192.168.0.13. Its full hostname is ubuntu-ad.allenlan.net. The realm is > ALLENLAN.NET. > > The DNS testing section of the document passes: > > $host -t SRV _ldap._tcp.allenlan.net. > _ldap._tcp.allenlan.net has SRV record 0 100 389 > ubuntu-ad.allenlan.net. > $host -t SRV _kerberos._udp.allenlan.net. > _kerberos._udp.allenlan.net has SRV record 0 100 88 > ubuntu-ad.allenlan.net. > $host -t A ubuntu-ad.allenlan.net. > ubuntu-ad.allenlan.net has address 192.168.0.13 > > I configured my Windows XP system with a DNS of 192.168.0.13 (Samba4 > server). > When I perform the Windows command "nslookup ubuntu-ad.allenlan.net" (or > any variation of that) it reports: > DNS request timed out. > timeout was 2 seconds. > *** Can't find server name for address 192.168.0.13: Timed out > (above 3 messages repeat again) > Default servers are not available > Server: UnKnown > Address: 192.168.0.13 > > The Windows system can ping the Samba4 server by IP address. > > Any help would be appreciated! More configuration information below. > > /etc/resolv.conf: > domain allenlan.net > nameserver 192.168.0.13 > > /usr/local/samba/etc/smb.conf: > [global] > workgroup = ALLENLAN > realm = ALLENLAN.NET > netbios name = UBUNTU-AD > server role = active directory domain controller > dns forwarder = 192.168.0.1 > interfaces = 192.168.0.13 127.0.0.1 > bind interfaces only = yes > log level = 3 > server services = smb, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, > winbind, ntp_signd, kcc, dnsupdate, dns > > /etc/hosts: > 192.168.0.13 ubuntu-ad ubuntu-ad.allenlan.net > 127.0.0.1 localhost localhost.localdomain localhost4 > localhost4.localdomain4 > ::1 localhost localhost.localdomain localhost6 > localhost6.localdomain6 > > $hostname > ubuntu-ad.allenlan.net >That was the reason I switched to bind9. The internal dns server used to keep connections open, without closing old ones, until reaching the limit of max files... I don't know wether it's been already fixed or not. But it doesn't happen with bind. This topic is been in the list before. Felix.
Rowland Penny
2013-Jan-09 15:05 UTC
[Samba] Samba4 internal DNS not responding to DNS requests
On 09/01/13 14:32, Lee Allen wrote:> I am not able to get the Samba4 internal DNS server to respond to DNS > requests on the network. > > I am running Samba4 4.1.0pre1-GIT-c1fb37d on my CentOS 6.3 system. I > followed the instructions here: > wiki.samba.org/index.php/Samba_AD_DC_HOWTO > > I configured Samba4 to use the internal DNS server. My Samba4 server is > 192.168.0.13. Its full hostname is ubuntu-ad.allenlan.net. The realm is > ALLENLAN.NET. > > The DNS testing section of the document passes: > > $host -t SRV _ldap._tcp.allenlan.net. > _ldap._tcp.allenlan.net has SRV record 0 100 389 ubuntu-ad.allenlan.net. > $host -t SRV _kerberos._udp.allenlan.net. > _kerberos._udp.allenlan.net has SRV record 0 100 88 > ubuntu-ad.allenlan.net. > $host -t A ubuntu-ad.allenlan.net. > ubuntu-ad.allenlan.net has address 192.168.0.13 > > I configured my Windows XP system with a DNS of 192.168.0.13 (Samba4 > server). > When I perform the Windows command "nslookup ubuntu-ad.allenlan.net" (or > any variation of that) it reports: > DNS request timed out. > timeout was 2 seconds. > *** Can't find server name for address 192.168.0.13: Timed out > (above 3 messages repeat again) > Default servers are not available > Server: UnKnown > Address: 192.168.0.13 > > The Windows system can ping the Samba4 server by IP address. > > Any help would be appreciated! More configuration information below. > > /etc/resolv.conf: > domain allenlan.net > nameserver 192.168.0.13 > > /usr/local/samba/etc/smb.conf: > [global] > workgroup = ALLENLAN > realm = ALLENLAN.NET > netbios name = UBUNTU-AD > server role = active directory domain controller > dns forwarder = 192.168.0.1 > interfaces = 192.168.0.13 127.0.0.1 > bind interfaces only = yes > log level = 3 > server services = smb, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, > winbind, ntp_signd, kcc, dnsupdate, dns > > /etc/hosts: > 192.168.0.13 ubuntu-ad ubuntu-ad.allenlan.net > 127.0.0.1 localhost localhost.localdomain localhost4 > localhost4.localdomain4 > ::1 localhost localhost.localdomain localhost6 > localhost6.localdomain6 > > $hostname > ubuntu-ad.allenlan.net > > Thank you. > > Lee AllenHi, What does 'netstat -npl | grep 53 | grep LISTEN' return? Rowland -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.