Skip to main content

utiliser les vues de BIND

Resolution variable de ""

Le but est de faire en sorte que
  • Depuis, "" resolve vers 111.222.333.444
  • Depuis, "" resolve vers 555.666.777.888
Globalement il s'agit d'utiliser les "view" de BIND.
Actuellement "" est une enregistrement de type A dans la zone "".


Il y a deja 2 serveurs BIND en production, que nous appellerons "NS1" et "NS2"
Les vues ne seront opérationelles que sur "NS2", si le client fait directement sa requete sur "NS2".

Déléguer les DNS

Dans NS1, /etc/bind/hosts/masters/
 smtp IN NS smtp IN NS 
Penser à supprimer les enregistrements A!
"" n'est plus un simple enregistrement, mais maintenant une zone.

Créer la zone

sur NS1

Dans /etc/bind/named.conf.local:
 zone "" {  type master;  file "/etc/bind/hosts/masters/";  allow-query { any; };  }; 
Dans /etc/bind/hosts/masters/
 $ttl 38400      IN      SOA (                        2010041501                        10800                        3600                        604800                        38400 ) @   IN NS @   IN NS @ 1 IN  A 111.222.333.444 

sur NS2

Dans /etc/bind/named.conf.local, créer la zone slave "":
 zone "" {         type slave;         file "";         masters {       ;                 };         allow-query { any; };         }; 
Dans /etc/bind/named.conf.options, dans chaque vue existante, créer des zones master:
 view "les-1" {         match-clients { ; }; [...]         zone "" {                 type master;                 file "/etc/bind/hosts/masters/";                 allow-query { any; };         }; }; 
 view "les-2" {         match-clients { ; }; [...]         zone "" {                 type master;                 file "/etc/bind/hosts/masters/";                 allow-query { any; };         }; }; 

Dans les fchiers de "vues"


 $ttl 38400      IN      SOA (                         2010041501                         10800                         3600                         604800                         38400 ) @ IN NS @ IN NS @ 1 IN A 111.222.333.444 


 $ttl 38400      IN      SOA (                         2010041501                         10800                         3600                         604800                         38400 ) @ IN NS @ IN NS @ 1 IN A 555.666.777.888 


  1. Et pour blacklister la commande pour exporter la zone dns ? :-)


Post a Comment

Popular posts from this blog

dockerfile multiline to file

Outputing a multiline string from Dockerfile
I motsly use a Dockerfile by sourcing from a base ditribution: CentOS or Debian.
But I also have a local mirror and would like to use it for packages installation.

Espacially on CentOS it is about many lines to write to the /etc/yum.repos.d/CentOS-Base.repo file.

Easiest way: one RUN per line The first method that comes in mind is to issue one RUN per line to write.
Here you are:

RUN echo "[base] " > /etc/yum.repos.d/CentOS-Base.repo RUN echo "name=CentOS-$releasever - Base " >> /etc/yum.repos.d/CentOS-Base.repo RUN echo "baseurl= " >> /etc/yum.repos.d/CentOS-Base.repo RUN echo "gpgcheck=0 " >>…

vmware net_device trans_start

VMWare Workstation 12 and Kernel 4.7 When recompiling vmware kernel modules on a kernel 4.7, I get this error:

/tmp/modconfig-xrrZGZ/vmnet-only/netif.c:468:7: error: ‘struct net_device’ has no member named ‘trans_start’; did you mean ‘mem_start’?     dev->trans_start = jiffies;
This seems to be an already encountered problem: I choosed to replace the line, instead of deleting it.

- dev->trans_start = jiffies; + netif_trans_update(dev); I also noted that I had to re-tar the modified sources instead of leaving them untared, because the compilation process only takes the archives. 
On precedent editions of these files, I just left the modified folders "vmnet-only/" and "vmmon-only/" expanded without the need to re-tar them.

Jira workflow for new projects

Associated workflow creation I'm a Jira Cloud user and begining from some version 6, I noticed that when I create a project, it automatically creates a Workflow and Issue Scheme that is prepended by the project key and which is a copy of the default scheme.
I always had to make a cleanup after creating a project. Default workflow for new projects I also miss a feature that would allow me to make a custom workflow (and globally custom project setting) the default for new projects I create.
Solution: Create with shared configuration While searching, I noticed that with Jira Cloud which is version 7.1.0 at the time I write, there is a link at the bottom of the "Create project" wizard:
"Create with shared configuration" will allow me to select the project I want the new one to share configuration with.

The new created project will use the same configuration as the project I selectThere will be no creation of Workflow and Issue Scheme that I need to cleanup

This fea…