How to preserve existing host file when running chef template resource












0















I'm trying to add new set of FQDN and IPs into the existing Windows hosts file by using the Chef template resources. What I found out is when I ran the chef recipe it will erase the existing hosts file and then add the new updates. I only want to append the new resources to the end of the file, am I doing something wrong here by using action :touch?



template file hosts.erb:



<% node['hostnames'].each do |name, value| %>
<%= value %>
<% end %>


recipe windows.rb file:



template 'C:\Windows\system32\drivers\etc\hosts' do
source 'hosts.erb'
action :touch
end


kitchen converge output file tells me the hosts file is getting overwritten and not update? why?



   Recipe: hostnames::windows
* template[C:Windowssystem32driversetchosts] action touch
- update content in file C:Windowssystem32driversetchosts from 2d6bdf to 8068b4
--- C:Windowssystem32driversetchosts 2016-07-16 13:21:31.289888800 +0000
+++ C:Windowssystem32driversetc/chef-hosts20181128-568-1skk2oh 2018-11-28 01:15:55.998460000 +0000
@@ -1,22 +1,6 @@
-# Copyright (c) 1993-2009 Microsoft Corp.
-#
-# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
-#
-# This file contains the mappings of IP addresses to host names. Each
-# entry should be kept on an individual line. The IP address should
-# be placed in the first column followed by the corresponding host name.
-# The IP address and the host name should be separated by at least one
-# space.
-#
-# Additionally, comments (such as these) may be inserted on individual
-# lines or following the machine name denoted by a '#' symbol.
-#
-# For example:
-#
-# 102.54.94.97 rhino.acme.com # source server
-# 38.25.63.10 x.acme.com # x client host
+# Content of the following hostnames are mainten by Chef cookbook

-# localhost name resolution is handled within DNS itself.
-# 127.0.0.1 localhost
-# ::1 localhost
+10.219.33.1 a.us.bb-ops.io
+10.219.34.2 b.us.bb-ops.io
+10.219.35.3 c.us.bb-ops.io
- update utime on file C:Windowssystem32driversetchosts









share|improve this question



























    0















    I'm trying to add new set of FQDN and IPs into the existing Windows hosts file by using the Chef template resources. What I found out is when I ran the chef recipe it will erase the existing hosts file and then add the new updates. I only want to append the new resources to the end of the file, am I doing something wrong here by using action :touch?



    template file hosts.erb:



    <% node['hostnames'].each do |name, value| %>
    <%= value %>
    <% end %>


    recipe windows.rb file:



    template 'C:\Windows\system32\drivers\etc\hosts' do
    source 'hosts.erb'
    action :touch
    end


    kitchen converge output file tells me the hosts file is getting overwritten and not update? why?



       Recipe: hostnames::windows
    * template[C:Windowssystem32driversetchosts] action touch
    - update content in file C:Windowssystem32driversetchosts from 2d6bdf to 8068b4
    --- C:Windowssystem32driversetchosts 2016-07-16 13:21:31.289888800 +0000
    +++ C:Windowssystem32driversetc/chef-hosts20181128-568-1skk2oh 2018-11-28 01:15:55.998460000 +0000
    @@ -1,22 +1,6 @@
    -# Copyright (c) 1993-2009 Microsoft Corp.
    -#
    -# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
    -#
    -# This file contains the mappings of IP addresses to host names. Each
    -# entry should be kept on an individual line. The IP address should
    -# be placed in the first column followed by the corresponding host name.
    -# The IP address and the host name should be separated by at least one
    -# space.
    -#
    -# Additionally, comments (such as these) may be inserted on individual
    -# lines or following the machine name denoted by a '#' symbol.
    -#
    -# For example:
    -#
    -# 102.54.94.97 rhino.acme.com # source server
    -# 38.25.63.10 x.acme.com # x client host
    +# Content of the following hostnames are mainten by Chef cookbook

    -# localhost name resolution is handled within DNS itself.
    -# 127.0.0.1 localhost
    -# ::1 localhost
    +10.219.33.1 a.us.bb-ops.io
    +10.219.34.2 b.us.bb-ops.io
    +10.219.35.3 c.us.bb-ops.io
    - update utime on file C:Windowssystem32driversetchosts









    share|improve this question

























      0












      0








      0








      I'm trying to add new set of FQDN and IPs into the existing Windows hosts file by using the Chef template resources. What I found out is when I ran the chef recipe it will erase the existing hosts file and then add the new updates. I only want to append the new resources to the end of the file, am I doing something wrong here by using action :touch?



      template file hosts.erb:



      <% node['hostnames'].each do |name, value| %>
      <%= value %>
      <% end %>


      recipe windows.rb file:



      template 'C:\Windows\system32\drivers\etc\hosts' do
      source 'hosts.erb'
      action :touch
      end


      kitchen converge output file tells me the hosts file is getting overwritten and not update? why?



         Recipe: hostnames::windows
      * template[C:Windowssystem32driversetchosts] action touch
      - update content in file C:Windowssystem32driversetchosts from 2d6bdf to 8068b4
      --- C:Windowssystem32driversetchosts 2016-07-16 13:21:31.289888800 +0000
      +++ C:Windowssystem32driversetc/chef-hosts20181128-568-1skk2oh 2018-11-28 01:15:55.998460000 +0000
      @@ -1,22 +1,6 @@
      -# Copyright (c) 1993-2009 Microsoft Corp.
      -#
      -# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
      -#
      -# This file contains the mappings of IP addresses to host names. Each
      -# entry should be kept on an individual line. The IP address should
      -# be placed in the first column followed by the corresponding host name.
      -# The IP address and the host name should be separated by at least one
      -# space.
      -#
      -# Additionally, comments (such as these) may be inserted on individual
      -# lines or following the machine name denoted by a '#' symbol.
      -#
      -# For example:
      -#
      -# 102.54.94.97 rhino.acme.com # source server
      -# 38.25.63.10 x.acme.com # x client host
      +# Content of the following hostnames are mainten by Chef cookbook

      -# localhost name resolution is handled within DNS itself.
      -# 127.0.0.1 localhost
      -# ::1 localhost
      +10.219.33.1 a.us.bb-ops.io
      +10.219.34.2 b.us.bb-ops.io
      +10.219.35.3 c.us.bb-ops.io
      - update utime on file C:Windowssystem32driversetchosts









      share|improve this question














      I'm trying to add new set of FQDN and IPs into the existing Windows hosts file by using the Chef template resources. What I found out is when I ran the chef recipe it will erase the existing hosts file and then add the new updates. I only want to append the new resources to the end of the file, am I doing something wrong here by using action :touch?



      template file hosts.erb:



      <% node['hostnames'].each do |name, value| %>
      <%= value %>
      <% end %>


      recipe windows.rb file:



      template 'C:\Windows\system32\drivers\etc\hosts' do
      source 'hosts.erb'
      action :touch
      end


      kitchen converge output file tells me the hosts file is getting overwritten and not update? why?



         Recipe: hostnames::windows
      * template[C:Windowssystem32driversetchosts] action touch
      - update content in file C:Windowssystem32driversetchosts from 2d6bdf to 8068b4
      --- C:Windowssystem32driversetchosts 2016-07-16 13:21:31.289888800 +0000
      +++ C:Windowssystem32driversetc/chef-hosts20181128-568-1skk2oh 2018-11-28 01:15:55.998460000 +0000
      @@ -1,22 +1,6 @@
      -# Copyright (c) 1993-2009 Microsoft Corp.
      -#
      -# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
      -#
      -# This file contains the mappings of IP addresses to host names. Each
      -# entry should be kept on an individual line. The IP address should
      -# be placed in the first column followed by the corresponding host name.
      -# The IP address and the host name should be separated by at least one
      -# space.
      -#
      -# Additionally, comments (such as these) may be inserted on individual
      -# lines or following the machine name denoted by a '#' symbol.
      -#
      -# For example:
      -#
      -# 102.54.94.97 rhino.acme.com # source server
      -# 38.25.63.10 x.acme.com # x client host
      +# Content of the following hostnames are mainten by Chef cookbook

      -# localhost name resolution is handled within DNS itself.
      -# 127.0.0.1 localhost
      -# ::1 localhost
      +10.219.33.1 a.us.bb-ops.io
      +10.219.34.2 b.us.bb-ops.io
      +10.219.35.3 c.us.bb-ops.io
      - update utime on file C:Windowssystem32driversetchosts






      chef chef-recipe test-kitchen chef-template






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      asked Nov 28 '18 at 2:17









      FangFang

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      697
























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          This is proper Chef's behavior. You have two options: 1) Provide whole hosts file as atemplate or 2) Use FileEdit class, for example insert_line_if_no_match-instance_method.






          share|improve this answer
























          • Thanks for clarifying the behavior of the "action :touch" it makes sense. I'll be adding all the content to the template as the completed file. I also used the function insert_line_if_no_match and it also works as expected.

            – Fang
            Nov 28 '18 at 18:59













          Your Answer






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          1 Answer
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          active

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          0














          This is proper Chef's behavior. You have two options: 1) Provide whole hosts file as atemplate or 2) Use FileEdit class, for example insert_line_if_no_match-instance_method.






          share|improve this answer
























          • Thanks for clarifying the behavior of the "action :touch" it makes sense. I'll be adding all the content to the template as the completed file. I also used the function insert_line_if_no_match and it also works as expected.

            – Fang
            Nov 28 '18 at 18:59


















          0














          This is proper Chef's behavior. You have two options: 1) Provide whole hosts file as atemplate or 2) Use FileEdit class, for example insert_line_if_no_match-instance_method.






          share|improve this answer
























          • Thanks for clarifying the behavior of the "action :touch" it makes sense. I'll be adding all the content to the template as the completed file. I also used the function insert_line_if_no_match and it also works as expected.

            – Fang
            Nov 28 '18 at 18:59
















          0












          0








          0







          This is proper Chef's behavior. You have two options: 1) Provide whole hosts file as atemplate or 2) Use FileEdit class, for example insert_line_if_no_match-instance_method.






          share|improve this answer













          This is proper Chef's behavior. You have two options: 1) Provide whole hosts file as atemplate or 2) Use FileEdit class, for example insert_line_if_no_match-instance_method.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 28 '18 at 15:19









          Szymon SzypulskiSzymon Szypulski

          1,3051712




          1,3051712













          • Thanks for clarifying the behavior of the "action :touch" it makes sense. I'll be adding all the content to the template as the completed file. I also used the function insert_line_if_no_match and it also works as expected.

            – Fang
            Nov 28 '18 at 18:59





















          • Thanks for clarifying the behavior of the "action :touch" it makes sense. I'll be adding all the content to the template as the completed file. I also used the function insert_line_if_no_match and it also works as expected.

            – Fang
            Nov 28 '18 at 18:59



















          Thanks for clarifying the behavior of the "action :touch" it makes sense. I'll be adding all the content to the template as the completed file. I also used the function insert_line_if_no_match and it also works as expected.

          – Fang
          Nov 28 '18 at 18:59







          Thanks for clarifying the behavior of the "action :touch" it makes sense. I'll be adding all the content to the template as the completed file. I also used the function insert_line_if_no_match and it also works as expected.

          – Fang
          Nov 28 '18 at 18:59






















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