Slave zero-TTL on CNAMES

Reindl Harald h.reindl at thelounge.net
Thu Jun 5 14:48:04 UTC 2014


Hi

how is that below possible?

* ns2.thelounge.net = Master
* ns1.thelounge.net = Slave
* both are using the same packages (VMwware clones)
* i removed the zone file on the slave and restarted named
* the zone was transferred for sure again with that new "binary format"
* that affactes *any* zone on that both servers

how can the slave give a different answer

[root at ns1:~]$ rpm -qa | grep bind
bind-license-9.9.3-15.P2.fc19.noarch
bind-9.9.3-15.P2.fc19.x86_64
bind-utils-9.9.3-15.P2.fc19.x86_64
bind-chroot-9.9.3-15.P2.fc19.x86_64
bind-libs-9.9.3-15.P2.fc19.x86_64
bind-libs-lite-9.9.3-15.P2.fc19.x86_64
__________________________________________________________________________________

[harry at srv-rhsoft:~]$ dig www.rhsoft.net @ns1.thelounge.net
; <<>> DiG 9.9.4-P2-RedHat-9.9.4-12.P2.fc20 <<>> www.rhsoft.net @ns1.thelounge.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54655
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 3072
;; QUESTION SECTION:
;www.rhsoft.net.                        IN      A

;; ANSWER SECTION:
www.rhsoft.net.         0       IN      CNAME   proxy.thelounge.net.
proxy.thelounge.net.    86400   IN      A       91.118.73.4

;; Query time: 19 msec
;; SERVER: 85.124.176.242#53(85.124.176.242)
;; WHEN: Do Jun 05 16:43:38 CEST 2014
;; MSG SIZE  rcvd: 89
__________________________________________________________________________________

[harry at srv-rhsoft:~]$ dig www.rhsoft.net @ns2.thelounge.net
; <<>> DiG 9.9.4-P2-RedHat-9.9.4-12.P2.fc20 <<>> www.rhsoft.net @ns2.thelounge.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2758
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 3072
;; QUESTION SECTION:
;www.rhsoft.net.                        IN      A

;; ANSWER SECTION:
www.rhsoft.net.         86400   IN      CNAME   proxy.thelounge.net.
proxy.thelounge.net.    86400   IN      A       91.118.73.4

;; Query time: 12 msec
;; SERVER: 91.118.73.16#53(91.118.73.16)
;; WHEN: Do Jun 05 16:43:41 CEST 2014
;; MSG SIZE  rcvd: 89
__________________________________________________________________________________


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