[chef] Unusual behavior of attributes as node object is not getting reset during client run

[Mrigesh Priyadarshi < >]

Hello,

I am working on a recipe of DB2 installation where the User and group information changes with every DB2 version.

So, I put user and group info in data bag  and trying to override the information in attribute file with the data_bag info.

This is what i did :-
<<< ----
In data_bag :-
{"id":"db2","V9.1":{"uid":"9001","uname":"db91inst","gid":"9100","gname":"db9grp"},"V9.5":{"uid":"9005","uname":"db95inst","gid":"9100","gname":"db9grp"}}

In attribute file:-
default[:db2][:version] = "V9.5"
default[:db2][:uid] = "uid"
default[:db2][:user] = "db2user"
default[:db2][:gid] = "gid"
default[:db2][:group] = "db2grp"
default[:net][:user] = {node[:db2][:uid] => [ node[:db2][:user], "db2 user", node[:db2][:db2home]] }
default[:net][:group] = { node[:db2][:gid] => node[:db2][:group] }
=========================================================

In recipe file :-
db2client = node[:db2]
version = db2client[:version]
node.set[:db2][:uid] = DB2InstallInfo.getInstallUserId(version)
db2client[:user]["db2user"] = DB2InstallInfo.getInstallUserName(version)
node.set[:db2][:gid] = DB2InstallInfo.getInstallGroupId(version)
db2client[:group]["db2grp"] = DB2InstallInfo.getInstallGroupName(version)

ruby_block "test" do
    block do
         puts node[:net][:user], node[:net][:group]
    end
end
=======================================================

In Library File :-
require 'chef'
$installerInfo =     Chef::DataBagItem.load('dbclient', 'db2')
class DB2InstallInfo
    def self.getInstallUserId(version)
        userId = $installerInfo[version]
        return userId["uid"]
    end
    def self.getInstallUserName(version)
        userId = $installerInfo[version]
        return userId["uname"]
    end
    def self.getInstallGroupId(version)
        userId = $installerInfo[version]
        return userId["gid"]
    end
    def self.getInstallGroupName(version)
        userId = $installerInfo[version]
        return userId["gname"]
    end
end

------  >>>>

And On Chef Client run, I am getting this on two consecutive run after changing version no in attribute file:-
<<<<    -----
chef-client -o recipe[db2client::test] -l error
Starting Chef Client, version 11.6.0
resolving cookbooks for run list: ["db2client::test"]
Synchronizing Cookbooks:
  - db2client
Compiling Cookbooks...
Converging 1 resources
Recipe: db2client::test
  * ruby_block[test] action run{"9001"=>["db95inst", "db2 user", "/opt/ibm/db2"]}
{"9100"=>"db9grp"}

    - execute the ruby block test

Chef Client finished, 1 resources updated
=============================================================
chef-client -o recipe[db2client::test] -l error
Starting Chef Client, version 11.6.0
resolving cookbooks for run list: ["db2client::test"]
Synchronizing Cookbooks:
  - db2client
Compiling Cookbooks...
Converging 1 resources
Recipe: db2client::test
  * ruby_block[test] action run{"9005"=>["db95inst", "db2 user", "/opt/ibm/db2"]}
{"9100"=>"db9grp"}

    - execute the ruby block test

Chef Client finished, 1 resources updated


---------    >>>>

Its very confusing, please guide.

Warm Regards,

Mrigesh Priyadarshi