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DDNS, BIND and leftover .jnl files
DHCP DDNS not working for Linux clientsCan you combine dhcp dynamic dns updates and static IPs in the same Bind zone?ISC DHCP+BIND with failover and dynamic updates, can the secondary bind update DDNS?DDNS Not Creating Journal (Dhcpd and Named)Automatic subdomain wildcard for DHCP-DDNS additions (windows server)Multiple DNS mappings for a host via DDNSMultiple subnets on isc-dhcp-server using ddns with bind9ddns correct setting for dhcpd.conf and ifcfg file with regards to hostnameCleanup DHCPD leases as well as DDNS EntriesCan isc-dhcp-server update bind running on a non default port?
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I have configured BIND and ISC DHCPD to work together (using keys for updates). Now it's not that it does not work at all: forward maps etc are most often added.
However, very often, for no apparent reason the .jnl file (journal) for the zone is left there and the main zone file is not updated. This results in infuriating lack of resolution of some hosts after DHCP lease acquire (if the hosts was not there in the zone file in the first place, or it leads to the old address).
Permissions look like this:
-rw-r--r-- 1 bind bind 691 Dec 10 11:06 myzone.zone
-rw-r--r-- 1 bind bind 765 Dec 10 12:17 myzone.zone.jnl
It should not be permissions problem though since the zone does (often) get updated via DHCP/DDNS?
What is the source of this problem and a fix for it?
OS: debian 7.2 x64, stable release bind and isc-dhcp server.
linux debian bind ddns dhcpd
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
add a comment |
I have configured BIND and ISC DHCPD to work together (using keys for updates). Now it's not that it does not work at all: forward maps etc are most often added.
However, very often, for no apparent reason the .jnl file (journal) for the zone is left there and the main zone file is not updated. This results in infuriating lack of resolution of some hosts after DHCP lease acquire (if the hosts was not there in the zone file in the first place, or it leads to the old address).
Permissions look like this:
-rw-r--r-- 1 bind bind 691 Dec 10 11:06 myzone.zone
-rw-r--r-- 1 bind bind 765 Dec 10 12:17 myzone.zone.jnl
It should not be permissions problem though since the zone does (often) get updated via DHCP/DDNS?
What is the source of this problem and a fix for it?
OS: debian 7.2 x64, stable release bind and isc-dhcp server.
linux debian bind ddns dhcpd
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
1
I don't understand, even if the change is only in thejnlfile, it should always resolve correctly. Maybe your problem is somewhere else.
– faker
Dec 10 '13 at 13:16
add a comment |
I have configured BIND and ISC DHCPD to work together (using keys for updates). Now it's not that it does not work at all: forward maps etc are most often added.
However, very often, for no apparent reason the .jnl file (journal) for the zone is left there and the main zone file is not updated. This results in infuriating lack of resolution of some hosts after DHCP lease acquire (if the hosts was not there in the zone file in the first place, or it leads to the old address).
Permissions look like this:
-rw-r--r-- 1 bind bind 691 Dec 10 11:06 myzone.zone
-rw-r--r-- 1 bind bind 765 Dec 10 12:17 myzone.zone.jnl
It should not be permissions problem though since the zone does (often) get updated via DHCP/DDNS?
What is the source of this problem and a fix for it?
OS: debian 7.2 x64, stable release bind and isc-dhcp server.
linux debian bind ddns dhcpd
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
I have configured BIND and ISC DHCPD to work together (using keys for updates). Now it's not that it does not work at all: forward maps etc are most often added.
However, very often, for no apparent reason the .jnl file (journal) for the zone is left there and the main zone file is not updated. This results in infuriating lack of resolution of some hosts after DHCP lease acquire (if the hosts was not there in the zone file in the first place, or it leads to the old address).
Permissions look like this:
-rw-r--r-- 1 bind bind 691 Dec 10 11:06 myzone.zone
-rw-r--r-- 1 bind bind 765 Dec 10 12:17 myzone.zone.jnl
It should not be permissions problem though since the zone does (often) get updated via DHCP/DDNS?
What is the source of this problem and a fix for it?
OS: debian 7.2 x64, stable release bind and isc-dhcp server.
linux debian bind ddns dhcpd
linux debian bind ddns dhcpd
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
asked Dec 10 '13 at 11:22
LetMeSOThat4ULetMeSOThat4U
4401415
4401415
1
I don't understand, even if the change is only in thejnlfile, it should always resolve correctly. Maybe your problem is somewhere else.
– faker
Dec 10 '13 at 13:16
add a comment |
1
I don't understand, even if the change is only in thejnlfile, it should always resolve correctly. Maybe your problem is somewhere else.
– faker
Dec 10 '13 at 13:16
1
1
I don't understand, even if the change is only in the
jnl file, it should always resolve correctly. Maybe your problem is somewhere else.– faker
Dec 10 '13 at 13:16
I don't understand, even if the change is only in the
jnl file, it should always resolve correctly. Maybe your problem is somewhere else.– faker
Dec 10 '13 at 13:16
add a comment |
2 Answers
2
active
oldest
votes
I've looked at this before.
Restarting named will flush updated data from .jnl files back to the zone file, but there's also another way..
rndc freeze <zone> but this will disable DDNS, so it should be followed with a rndc thaw <zone> to re-enable it, and should clear up the .jnl files.
There's apparently a rndc sync in Bind 9.9.
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
Thanks! it works, but am I limited to running rndc freeze/from cron? Although not very probable, at some point DDNS will hit a split second when update is not available bc of this. What then? I could stop DHCPD, do rndc freeze, rndc thatw and then start DHCPD but...
– LetMeSOThat4U
Dec 10 '13 at 13:00
Why not run freeze/thaw at a time when it's improbable that DHCPd will be handing out addresses? If they're for clients, then perhaps a time when everyone's asleep?.. OR.. tail the dhcp output log file, and don't freeze it if it's just received a DHCPREQUEST packet?
– Tom O'Connor
Dec 10 '13 at 13:50
add a comment |
With bind 9.9, "rndc sync" is not enough; you also need the "-clean" flag:
sync [-clean] [zone [class [view]]]
Sync changes in the journal file for a dynamic zone to the master file. If the "-clean" option is specified, the journal file is also removed. If no zone is specified, then all zones are synced.
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
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votes
I've looked at this before.
Restarting named will flush updated data from .jnl files back to the zone file, but there's also another way..
rndc freeze <zone> but this will disable DDNS, so it should be followed with a rndc thaw <zone> to re-enable it, and should clear up the .jnl files.
There's apparently a rndc sync in Bind 9.9.
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
Thanks! it works, but am I limited to running rndc freeze/from cron? Although not very probable, at some point DDNS will hit a split second when update is not available bc of this. What then? I could stop DHCPD, do rndc freeze, rndc thatw and then start DHCPD but...
– LetMeSOThat4U
Dec 10 '13 at 13:00
Why not run freeze/thaw at a time when it's improbable that DHCPd will be handing out addresses? If they're for clients, then perhaps a time when everyone's asleep?.. OR.. tail the dhcp output log file, and don't freeze it if it's just received a DHCPREQUEST packet?
– Tom O'Connor
Dec 10 '13 at 13:50
add a comment |
I've looked at this before.
Restarting named will flush updated data from .jnl files back to the zone file, but there's also another way..
rndc freeze <zone> but this will disable DDNS, so it should be followed with a rndc thaw <zone> to re-enable it, and should clear up the .jnl files.
There's apparently a rndc sync in Bind 9.9.
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
Thanks! it works, but am I limited to running rndc freeze/from cron? Although not very probable, at some point DDNS will hit a split second when update is not available bc of this. What then? I could stop DHCPD, do rndc freeze, rndc thatw and then start DHCPD but...
– LetMeSOThat4U
Dec 10 '13 at 13:00
Why not run freeze/thaw at a time when it's improbable that DHCPd will be handing out addresses? If they're for clients, then perhaps a time when everyone's asleep?.. OR.. tail the dhcp output log file, and don't freeze it if it's just received a DHCPREQUEST packet?
– Tom O'Connor
Dec 10 '13 at 13:50
add a comment |
I've looked at this before.
Restarting named will flush updated data from .jnl files back to the zone file, but there's also another way..
rndc freeze <zone> but this will disable DDNS, so it should be followed with a rndc thaw <zone> to re-enable it, and should clear up the .jnl files.
There's apparently a rndc sync in Bind 9.9.
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
I've looked at this before.
Restarting named will flush updated data from .jnl files back to the zone file, but there's also another way..
rndc freeze <zone> but this will disable DDNS, so it should be followed with a rndc thaw <zone> to re-enable it, and should clear up the .jnl files.
There's apparently a rndc sync in Bind 9.9.
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
answered Dec 10 '13 at 11:28
Tom O'ConnorTom O'Connor
24.9k962138
24.9k962138
Thanks! it works, but am I limited to running rndc freeze/from cron? Although not very probable, at some point DDNS will hit a split second when update is not available bc of this. What then? I could stop DHCPD, do rndc freeze, rndc thatw and then start DHCPD but...
– LetMeSOThat4U
Dec 10 '13 at 13:00
Why not run freeze/thaw at a time when it's improbable that DHCPd will be handing out addresses? If they're for clients, then perhaps a time when everyone's asleep?.. OR.. tail the dhcp output log file, and don't freeze it if it's just received a DHCPREQUEST packet?
– Tom O'Connor
Dec 10 '13 at 13:50
add a comment |
Thanks! it works, but am I limited to running rndc freeze/from cron? Although not very probable, at some point DDNS will hit a split second when update is not available bc of this. What then? I could stop DHCPD, do rndc freeze, rndc thatw and then start DHCPD but...
– LetMeSOThat4U
Dec 10 '13 at 13:00
Why not run freeze/thaw at a time when it's improbable that DHCPd will be handing out addresses? If they're for clients, then perhaps a time when everyone's asleep?.. OR.. tail the dhcp output log file, and don't freeze it if it's just received a DHCPREQUEST packet?
– Tom O'Connor
Dec 10 '13 at 13:50
Thanks! it works, but am I limited to running rndc freeze/from cron? Although not very probable, at some point DDNS will hit a split second when update is not available bc of this. What then? I could stop DHCPD, do rndc freeze, rndc thatw and then start DHCPD but...
– LetMeSOThat4U
Dec 10 '13 at 13:00
Thanks! it works, but am I limited to running rndc freeze/from cron? Although not very probable, at some point DDNS will hit a split second when update is not available bc of this. What then? I could stop DHCPD, do rndc freeze, rndc thatw and then start DHCPD but...
– LetMeSOThat4U
Dec 10 '13 at 13:00
Why not run freeze/thaw at a time when it's improbable that DHCPd will be handing out addresses? If they're for clients, then perhaps a time when everyone's asleep?.. OR.. tail the dhcp output log file, and don't freeze it if it's just received a DHCPREQUEST packet?
– Tom O'Connor
Dec 10 '13 at 13:50
Why not run freeze/thaw at a time when it's improbable that DHCPd will be handing out addresses? If they're for clients, then perhaps a time when everyone's asleep?.. OR.. tail the dhcp output log file, and don't freeze it if it's just received a DHCPREQUEST packet?
– Tom O'Connor
Dec 10 '13 at 13:50
add a comment |
With bind 9.9, "rndc sync" is not enough; you also need the "-clean" flag:
sync [-clean] [zone [class [view]]]
Sync changes in the journal file for a dynamic zone to the master file. If the "-clean" option is specified, the journal file is also removed. If no zone is specified, then all zones are synced.
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
add a comment |
With bind 9.9, "rndc sync" is not enough; you also need the "-clean" flag:
sync [-clean] [zone [class [view]]]
Sync changes in the journal file for a dynamic zone to the master file. If the "-clean" option is specified, the journal file is also removed. If no zone is specified, then all zones are synced.
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
add a comment |
With bind 9.9, "rndc sync" is not enough; you also need the "-clean" flag:
sync [-clean] [zone [class [view]]]
Sync changes in the journal file for a dynamic zone to the master file. If the "-clean" option is specified, the journal file is also removed. If no zone is specified, then all zones are synced.
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
With bind 9.9, "rndc sync" is not enough; you also need the "-clean" flag:
sync [-clean] [zone [class [view]]]
Sync changes in the journal file for a dynamic zone to the master file. If the "-clean" option is specified, the journal file is also removed. If no zone is specified, then all zones are synced.
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
answered Jul 14 '14 at 21:53
Craig LeresCraig Leres
7112
7112
add a comment |
add a comment |
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1
I don't understand, even if the change is only in the
jnlfile, it should always resolve correctly. Maybe your problem is somewhere else.– faker
Dec 10 '13 at 13:16