06 Linux Academy - Certified Chef Developer Basic Chef Fluency Badge- Lecture: Working with not_if and only_if Guards

gistfile1.txt

+Terminal log:
        C:\Users\shinidharan\Documents\GitHub> ssh [email protected]
        Warning: Permanently added '54.86.131.236' (ECDSA) to the list of known hosts
        [email protected]'s password:
        Last login: Wed Jan  4 05:06:13 2017 from c-76-104-43-10.hsd1.va.comcast.net
        [user@gsmurali1 ~]$ vim learn.rb
        [user@gsmurali1 ~]$ cat learn.rb
        package 'apache' do
                package_name 'httpd'
        end

        service 'httpd' do
                action [:enable, :start]
        end

        file '/var/www/index.html' do
                action :delete
        end

        file '/var/www/html/index.html' do
                content 'Hello World!'
                mode '0755'
                owner 'root'
                group 'apache'
        end

        file '/etc/motd' do
                content 'Welcome to my server'

        end
        [user@gsmurali1 ~]$ ruby -c learn.rb
        Syntax OK
        [user@gsmurali1 ~]$ foodcritic learn.rb
        FC011: Missing README in markdown format: ../README.md:1
        FC031: Cookbook without metadata file: ../metadata.rb:1
        FC045: Metadata does not contain cookbook name: ../metadata.rb:1


        [user@gsmurali1 ~]$ sudo su
        [sudo] password for user:
        Sorry, try again.
        [sudo] password for user:
        [root@gsmurali1 user]# clear

        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:16:05+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:16:05+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user.
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:16:07+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 5 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * file[/etc/motd] action create
            - update content in file /etc/motd from e3b0c4 to ba4ed8
            --- /etc/motd       2013-06-07 14:31:32.000000000 +0000
            +++ /etc/.chef-motd20170105-1911-1jq9nop    2017-01-05 05:16:16.142880029 +0000
            @@ -1 +1,2 @@
            +Welcome to my server
            - restore selinux security context

        Running handlers:
        Running handlers complete
        Chef Client finished, 1/6 resources updated in 10 seconds
        [root@gsmurali1 user]# cat /etc/motd
        Welcome to my server[root@gsmurali1 user]#


        [user@gsmurali1 ~]$ cat learn.rb
        package 'apache' do
                package_name 'httpd'
        end

        service 'httpd' do
                action [:enable, :start]
        end

        file '/var/www/index.html' do
                action :delete
        end

        file '/var/www/html/index.html' do
                content 'Hello World!'
                mode '0755'
                owner 'root'
                group 'apache'
        end

        file '/etc/motd' do
                content 'Welcome to my server'

        end

        execute 'command-test' do
                command 'echo blah >> /etc/motd'
                only_if 'test -r /etc/motd'
        end
        [user@gsmurali1 ~]$ ruby -c learn.rb && foodcritic learn.rb
        Syntax OK
        FC011: Missing README in markdown format: ../README.md:1
        FC031: Cookbook without metadata file: ../metadata.rb:1
        FC045: Metadata does not contain cookbook name: ../metadata.rb:1

        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:23:44+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:23:44+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user.
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:23:46+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 6 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * file[/etc/motd] action create (up to date)
          * execute[command-test] action run
            - execute echo blah >> /etc/motd

        Running handlers:
        Running handlers complete
        Chef Client finished, 1/7 resources updated in 09 seconds
        [root@gsmurali1 user]# cat /etc/motd
        Welcome to my serverblah
        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:25:53+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:25:53+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user.
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:25:56+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 6 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * file[/etc/motd] action create
            - update content in file /etc/motd from 0292b5 to ba4ed8
            --- /etc/motd       2017-01-05 05:23:53.810537856 +0000
            +++ /etc/.chef-motd20170105-3059-1m236p9    2017-01-05 05:26:00.672747697 +0000
            @@ -1,2 +1,2 @@
            -Welcome to my serverblah
            +Welcome to my server
            - restore selinux security context
          * execute[command-test] action run
            - execute echo blah >> /etc/motd

        Running handlers:
        Running handlers complete
        Chef Client finished, 2/7 resources updated in 06 seconds
        [root@gsmurali1 user]# cat /etc/motd
        Welcome to my serverblah
        [root@gsmurali1 user]#
        [root@gsmurali1 user]# cat learn.rb
        package 'apache' do
                package_name 'httpd'
        end

        service 'httpd' do
                action [:enable, :start]
        end

        file '/var/www/index.html' do
                action :delete
        end

        file '/var/www/html/index.html' do
                content 'Hello World!'
                mode '0755'
                owner 'root'
                group 'apache'
        end

        #file '/etc/motd' do
        #       content 'Welcome to my server'
        #
        #end

        execute 'command-test' do
                command 'echo blah >> /etc/motd'
                only_if 'test -r /etc/motd'
        end
        [root@gsmurali1 user]# ruby -c learn.rb && foodcritic learn.rb
        Syntax OK
        FC011: Missing README in markdown format: ../README.md:1
        FC031: Cookbook without metadata file: ../metadata.rb:1
        FC045: Metadata does not contain cookbook name: ../metadata.rb:1
        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:29:29+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:29:29+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user.
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:29:31+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 5 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * execute[command-test] action run
            - execute echo blah >> /etc/motd

        Running handlers:
        Running handlers complete
        Chef Client finished, 1/6 resources updated in 06 seconds
        [root@gsmurali1 user]# cat /etc/motd
        Welcome to my serverblah
        blah
        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:29:48+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:29:48+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user.
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:29:50+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 5 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * execute[command-test] action run
            - execute echo blah >> /etc/motd

        Running handlers:
        Running handlers complete
        Chef Client finished, 1/6 resources updated in 05 seconds
        [root@gsmurali1 user]# cat /etc/motd
        Welcome to my serverblah
        blah
        blah
        [root@gsmurali1 user]#
        [root@gsmurali1 user]# rm /etc/motd
        rm: remove regular file ‘/etc/motd’? y
        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:32:29+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:32:29+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user.
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:32:31+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 5 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * execute[command-test] action run (skipped due to only_if)

        Running handlers:
        Running handlers complete
        Chef Client finished, 0/6 resources updated in 06 seconds
        [root@gsmurali1 user]#

        [root@gsmurali1 user]# cat learn.rb
        package 'apache' do
                package_name 'httpd'
        end

        service 'httpd' do
                action [:enable, :start]
        end

        file '/var/www/index.html' do
                action :delete
        end

        file '/var/www/html/index.html' do
                content 'Hello World!'
                mode '0755'
                owner 'root'
                group 'apache'
        end

        #file '/etc/motd' do
        #       content 'Welcome to my server'
        #
        #end

        #execute 'command-test' do
        #       command 'echo blah >> /etc/motd'
        #       only_if 'test -r /etc/motd'
        #end

        execute 'command-test' do
                command 'echo blah >> /etc/motd'
                not_if 'test -r /etc/motd'
        end


        [root@gsmurali1 user]# ruby -c learn.rb && foodcritic learn.rb
        Syntax OK
        FC011: Missing README in markdown format: ../README.md:1
        FC031: Cookbook without metadata file: ../metadata.rb:1
        FC045: Metadata does not contain cookbook name: ../metadata.rb:1
        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:36:40+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:36:40+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:36:42+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 5 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * execute[command-test] action run
            - execute echo blah >> /etc/motd

        Running handlers:
        Running handlers complete
        Chef Client finished, 1/6 resources updated in 06 seconds
        [root@gsmurali1 user]# touch /etc/motd
        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:37:37+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:37:37+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:37:39+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 5 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * execute[command-test] action run (skipped due to not_if)

        Running handlers:
        Running handlers complete
        Chef Client finished, 0/6 resources updated in 05 seconds
        [root@gsmurali1 user]#

        [root@gsmurali1 user]# cat /etc/motd
        blah
        [root@gsmurali1 user]# ruby -c learn.rb && foodcritic learn.rb
        learn.rb:37: syntax error, unexpected '}', expecting ')'
        [root@gsmurali1 user]# vim learn.rb
        [root@gsmurali1 user]# cat learn.rb
        package 'apache' do
                package_name 'httpd'
        end

        service 'httpd' do
                action [:enable, :start]
        end

        file '/var/www/index.html' do
                action :delete
        end

        file '/var/www/html/index.html' do
                content 'Hello World!'
                mode '0755'
                owner 'root'
                group 'apache'
        end

        #file '/etc/motd' do
        #       content 'Welcome to my server'
        #
        #end

        #execute 'command-test' do
        #       command 'echo blah >> /etc/motd'
        #       only_if 'test -r /etc/motd'
        #end

        #execute 'command-test' do
        #        command 'echo blah >> /etc/motd'
        #        not_if 'test -r /etc/motd'
        #end

        execute 'command-test' do
                command 'echo blah >> /etc/motd'
                only_if { File.exists?('/etc/motd') }
        end




        [root@gsmurali1 user]# ruby -c learn.rb && foodcritic learn.rb
        Syntax OK
        FC011: Missing README in markdown format: ../README.md:1
        FC031: Cookbook without metadata file: ../metadata.rb:1
        FC045: Metadata does not contain cookbook name: ../metadata.rb:1
        [root@gsmurali1 user]# chef-client --local-mode learn.rb
        [2017-01-05T05:44:37+00:00] WARN: No config file found or specified on command line, using command line options.
        [2017-01-05T05:44:37+00:00] WARN: No cookbooks directory found at or above current directory.  Assuming /home/user.
        Starting Chef Client, version 12.17.44
        resolving cookbooks for run list: []
        Synchronizing Cookbooks:
        Installing Cookbook Gems:
        Compiling Cookbooks...
        [2017-01-05T05:44:39+00:00] WARN: Node gsmurali1.mylabserver.com has an empty run list.
        Converging 5 resources
        Recipe: @recipe_files::/home/user/learn.rb
          * yum_package[apache] action install (up to date)
          * service[httpd] action enable (up to date)
          * service[httpd] action start (up to date)
          * file[/var/www/index.html] action delete (up to date)
          * file[/var/www/html/index.html] action create (up to date)
          * execute[command-test] action run
            - execute echo blah >> /etc/motd

        Running handlers:
        Running handlers complete
        Chef Client finished, 1/6 resources updated in 06 seconds
        [root@gsmurali1 user]# cat /etc/motd
        blah
        blah
        [root@gsmurali1 user]#