[chef] Re: RE: Re: Chef11 HA

[Adam Jacob < >]

Using DRBD for this is a good idea. If you share /var/opt/chef-server via
DRBD, you can use the normal mechanisms for starting/stopping the cluster,
and be certain you will have identical data.

Private Chef supports this configuration out of the box, fwiw, but it's
equally possible with Open Source Chef.

Best,
Adam


On 2/13/13 8:45 PM, "Baruch Shpirer" 
<
 >
 wrote:

>Is there any draft to the HA procedure/setup?
>
>Also, if I configure postgresql for master-master replication
>and use drbd for the bookshelf folder
>does it mean i got 2 identical servers in async mode?
>Will clients be using same validation public key in both sites?
>
>Baruch
>
>-----Original Message-----
>From: Seth Falcon 
>[mailto:
 
>Sent: Monday, February 11/02/2013 17:35
>To: 
><
 >
>Subject: [chef] Re: Chef11 HA
>
>
>On Feb 11, 2013, at 1:29 PM, Vaidas Jablonskis wrote:
>
>> This might be slightly unrelated to this conversion, but what I wonder
>>what is stored in postgres database?
>
>All of the Chef object data is stored in the db. You can explore the
>schema a bit like this:
>
>
 :~#
> su - opscode-pgsql
>$ bash    
>
 :~$
> which psql
>/opt/chef-server/embedded/bin/psql
>
 :~$
> psql opscode_chef psql (9.2.1)
>Type "help" for help.
>
>opscode_chef=# \d
>                         List of relations
> Schema |             Name              |   Type   |     Owner
>--------+-------------------------------+----------+---------------
> public | checksums                     | table    | opscode-pgsql
> public | clients                       | table    | opscode-pgsql
> public | cookbook_version_checksums    | table    | opscode-pgsql
> public | cookbook_version_dependencies | view     | opscode-pgsql
> public | cookbook_versions             | table    | opscode-pgsql
> public | cookbook_versions_by_rank     | view     | opscode-pgsql
> public | cookbooks                     | table    | opscode-pgsql
> public | cookbooks_id_seq              | sequence | opscode-pgsql
> public | data_bag_items                | table    | opscode-pgsql
> public | data_bags                     | table    | opscode-pgsql
> public | environments                  | table    | opscode-pgsql
> public | joined_cookbook_version       | view     | opscode-pgsql
> public | nodes                         | table    | opscode-pgsql
> public | osc_users                     | table    | opscode-pgsql
> public | roles                         | table    | opscode-pgsql
> public | sandboxed_checksums           | table    | opscode-pgsql
> public | schema_info                   | table    | opscode-pgsql
>(17 rows)
>
>And find the script used to initialize the schema here:
>https://github.com/opscode/chef_db/blob/master/priv/pgsql_schema.sql
>
>> What happens when this database gets corrupted or data is lost, for
>>instance?
>
>Bad things happen. If the db data is lost or corrupted, so is your Chef
>Server.
>
>+ seth
>
>
>
>