Looping in hostvars

-1

I'm wondering if it is possible to perform a loop in the hostvars folder when using Ansible?

Here is what I've tried but haven't had success in making it work - or is it just not possible to do?

---



list_pool: 'list ltm pool {{ items }}'

with_items:

    - 'abc123'

    - 'def456'

I would use the "list_pool" variable in a playbook afterward:

  - name: List pool

    bigip_command:

      server: "{{ some_server }}"

      user: "{{ some_user }}"

      password: "{{ some_password }}"

      commands: 

        - "{{ list_pool }}"

      validate_certs: no

    delegate_to: localhost

asked Nov 21 '18 at 0:42

Pete

105

add a comment |

-1

I'm wondering if it is possible to perform a loop in the hostvars folder when using Ansible?

Here is what I've tried but haven't had success in making it work - or is it just not possible to do?

---



list_pool: 'list ltm pool {{ items }}'

with_items:

    - 'abc123'

    - 'def456'

I would use the "list_pool" variable in a playbook afterward:

  - name: List pool

    bigip_command:

      server: "{{ some_server }}"

      user: "{{ some_user }}"

      password: "{{ some_password }}"

      commands: 

        - "{{ list_pool }}"

      validate_certs: no

    delegate_to: localhost

asked Nov 21 '18 at 0:42

Pete

105

add a comment |

-1

I'm wondering if it is possible to perform a loop in the hostvars folder when using Ansible?

Here is what I've tried but haven't had success in making it work - or is it just not possible to do?

---



list_pool: 'list ltm pool {{ items }}'

with_items:

    - 'abc123'

    - 'def456'

I would use the "list_pool" variable in a playbook afterward:

  - name: List pool

    bigip_command:

      server: "{{ some_server }}"

      user: "{{ some_user }}"

      password: "{{ some_password }}"

      commands: 

        - "{{ list_pool }}"

      validate_certs: no

    delegate_to: localhost

asked Nov 21 '18 at 0:42

Pete

105

I'm wondering if it is possible to perform a loop in the hostvars folder when using Ansible?

Here is what I've tried but haven't had success in making it work - or is it just not possible to do?

---



list_pool: 'list ltm pool {{ items }}'

with_items:

    - 'abc123'

    - 'def456'

I would use the "list_pool" variable in a playbook afterward:

  - name: List pool

    bigip_command:

      server: "{{ some_server }}"

      user: "{{ some_user }}"

      password: "{{ some_password }}"

      commands: 

        - "{{ list_pool }}"

      validate_certs: no

    delegate_to: localhost

ansible f5

asked Nov 21 '18 at 0:42

Pete

105

asked Nov 21 '18 at 0:42

Pete

105

asked Nov 21 '18 at 0:42

Pete

105

asked Nov 21 '18 at 0:42

Pete

105

asked Nov 21 '18 at 0:42

Pete

105

add a comment |

2 Answers
2

active

oldest

votes

Not sure what you mean when you say you want to loop over hostvars folder.
From what I can interpret from your tasks is: "You need to execute big-ip command list ltm <pool-name> for multiple pools in the list list_pool"

If that's what you're after, this should work:

- name: Set list_pool fact

  set_fact:

    list_pool: "{{ list_pool | default() + [item] }}"

  with_items:

     - 'abc123'

     - 'def456'



- name: List pool

  bigip_command:

    server: "{{ some_server }}"

    user: "{{ some_user }}"

    password: "{{ some_password }}"

    commands: 

      - "list ltm {{ item }}"

    validate_certs: no

  delegate_to: localhost

  with_items: "{{ list_pool }}"

answered Nov 21 '18 at 1:16

Anant Naugai

34039

Thanks for this. I'd like to have the "list_pool" variable placed in the hostvars folder, iterate over multiple pool names, and have that variable ("list_pool") referenced in a playbook with the task I outlined using the bigip_command module.

– Pete
Nov 21 '18 at 1:49

Do you also have multiple hosts? If yes then you can reference list_pools variable for a particular host by : "hostvars['inventory_hostname']['list_pools']" If not, then you can define this list variable in group_vars/all.yml and just use the variable as is.

– Anant Naugai
Nov 21 '18 at 2:40

So would I be placing "hostvars['inventory_hostname']['list_pools']" where I have '- "{{ list_pool }}"' above, in the "bigip_command" task?

– Pete
Nov 21 '18 at 14:50

Yes precisely. But, that will work only if you're executing this playbook for/on all the hosts you've defined this variable for.

– Anant Naugai
Nov 26 '18 at 2:31

add a comment |

I got this working with the following solution:

hostvars file would look like this:

---    

pre_checks:

    checks:

        pool:

            - name: "pool_123"

            - name: "pool_456"

...

And the play would look like this:

--output truncated---



      - name: Fetch device host_vars

        set_fact:

          device_config: "{{ ((lookup('file','{{playbook_dir}}/host_vars/{{inventory_hostname}}.yml')) | from_yaml) }}"



      - name: Check pool

        bigip_command:

          server: "{{ inventory_hostname }}"

          user: "{{ remote_username }}"

          password: "{{ remote_passwd }}"

          commands:

            - "list ltm pool {{ item }}"       

          validate_certs: no

        with_items:

            - "{{ device_config.pre_checks | json_query('checks.pool[*].name') }}"

        delegate_to: localhost

        when: "'active' in Active_LTM['stdout'][0]"

        register: Pre_Checks



      - name: Verify pool 

        debug: var=item

        with_items: "{{ Pre_Checks.results | map(attribute='stdout_lines') | list }}"

answered Feb 15 at 19:47

Pete

105

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

If that's what you're after, this should work:

- name: Set list_pool fact

  set_fact:

    list_pool: "{{ list_pool | default() + [item] }}"

  with_items:

     - 'abc123'

     - 'def456'



- name: List pool

  bigip_command:

    server: "{{ some_server }}"

    user: "{{ some_user }}"

    password: "{{ some_password }}"

    commands: 

      - "list ltm {{ item }}"

    validate_certs: no

  delegate_to: localhost

  with_items: "{{ list_pool }}"

answered Nov 21 '18 at 1:16

Anant Naugai

34039

Thanks for this. I'd like to have the "list_pool" variable placed in the hostvars folder, iterate over multiple pool names, and have that variable ("list_pool") referenced in a playbook with the task I outlined using the bigip_command module.

– Pete
Nov 21 '18 at 1:49

Do you also have multiple hosts? If yes then you can reference list_pools variable for a particular host by : "hostvars['inventory_hostname']['list_pools']" If not, then you can define this list variable in group_vars/all.yml and just use the variable as is.

– Anant Naugai
Nov 21 '18 at 2:40

So would I be placing "hostvars['inventory_hostname']['list_pools']" where I have '- "{{ list_pool }}"' above, in the "bigip_command" task?

– Pete
Nov 21 '18 at 14:50

Yes precisely. But, that will work only if you're executing this playbook for/on all the hosts you've defined this variable for.

– Anant Naugai
Nov 26 '18 at 2:31

add a comment |

If that's what you're after, this should work:

- name: Set list_pool fact

  set_fact:

    list_pool: "{{ list_pool | default() + [item] }}"

  with_items:

     - 'abc123'

     - 'def456'



- name: List pool

  bigip_command:

    server: "{{ some_server }}"

    user: "{{ some_user }}"

    password: "{{ some_password }}"

    commands: 

      - "list ltm {{ item }}"

    validate_certs: no

  delegate_to: localhost

  with_items: "{{ list_pool }}"

answered Nov 21 '18 at 1:16

Anant Naugai

34039

Thanks for this. I'd like to have the "list_pool" variable placed in the hostvars folder, iterate over multiple pool names, and have that variable ("list_pool") referenced in a playbook with the task I outlined using the bigip_command module.

– Pete
Nov 21 '18 at 1:49

Do you also have multiple hosts? If yes then you can reference list_pools variable for a particular host by : "hostvars['inventory_hostname']['list_pools']" If not, then you can define this list variable in group_vars/all.yml and just use the variable as is.

– Anant Naugai
Nov 21 '18 at 2:40

So would I be placing "hostvars['inventory_hostname']['list_pools']" where I have '- "{{ list_pool }}"' above, in the "bigip_command" task?

– Pete
Nov 21 '18 at 14:50

Yes precisely. But, that will work only if you're executing this playbook for/on all the hosts you've defined this variable for.

– Anant Naugai
Nov 26 '18 at 2:31

add a comment |

If that's what you're after, this should work:

- name: Set list_pool fact

  set_fact:

    list_pool: "{{ list_pool | default() + [item] }}"

  with_items:

     - 'abc123'

     - 'def456'



- name: List pool

  bigip_command:

    server: "{{ some_server }}"

    user: "{{ some_user }}"

    password: "{{ some_password }}"

    commands: 

      - "list ltm {{ item }}"

    validate_certs: no

  delegate_to: localhost

  with_items: "{{ list_pool }}"

answered Nov 21 '18 at 1:16

Anant Naugai

34039

If that's what you're after, this should work:

- name: Set list_pool fact

  set_fact:

    list_pool: "{{ list_pool | default() + [item] }}"

  with_items:

     - 'abc123'

     - 'def456'



- name: List pool

  bigip_command:

    server: "{{ some_server }}"

    user: "{{ some_user }}"

    password: "{{ some_password }}"

    commands: 

      - "list ltm {{ item }}"

    validate_certs: no

  delegate_to: localhost

  with_items: "{{ list_pool }}"

answered Nov 21 '18 at 1:16

Anant Naugai

34039

answered Nov 21 '18 at 1:16

Anant Naugai

34039

answered Nov 21 '18 at 1:16

Anant Naugai

34039

answered Nov 21 '18 at 1:16

Anant Naugai

34039

Thanks for this. I'd like to have the "list_pool" variable placed in the hostvars folder, iterate over multiple pool names, and have that variable ("list_pool") referenced in a playbook with the task I outlined using the bigip_command module.

– Pete
Nov 21 '18 at 1:49

Do you also have multiple hosts? If yes then you can reference list_pools variable for a particular host by : "hostvars['inventory_hostname']['list_pools']" If not, then you can define this list variable in group_vars/all.yml and just use the variable as is.

– Anant Naugai
Nov 21 '18 at 2:40

So would I be placing "hostvars['inventory_hostname']['list_pools']" where I have '- "{{ list_pool }}"' above, in the "bigip_command" task?

– Pete
Nov 21 '18 at 14:50

Yes precisely. But, that will work only if you're executing this playbook for/on all the hosts you've defined this variable for.

– Anant Naugai
Nov 26 '18 at 2:31

add a comment |

Thanks for this. I'd like to have the "list_pool" variable placed in the hostvars folder, iterate over multiple pool names, and have that variable ("list_pool") referenced in a playbook with the task I outlined using the bigip_command module.

– Pete
Nov 21 '18 at 1:49

Do you also have multiple hosts? If yes then you can reference list_pools variable for a particular host by : "hostvars['inventory_hostname']['list_pools']" If not, then you can define this list variable in group_vars/all.yml and just use the variable as is.

– Anant Naugai
Nov 21 '18 at 2:40

So would I be placing "hostvars['inventory_hostname']['list_pools']" where I have '- "{{ list_pool }}"' above, in the "bigip_command" task?

– Pete
Nov 21 '18 at 14:50

Yes precisely. But, that will work only if you're executing this playbook for/on all the hosts you've defined this variable for.

– Anant Naugai
Nov 26 '18 at 2:31

Thanks for this. I'd like to have the "list_pool" variable placed in the hostvars folder, iterate over multiple pool names, and have that variable ("list_pool") referenced in a playbook with the task I outlined using the bigip_command module.

– Pete
Nov 21 '18 at 1:49

Do you also have multiple hosts? If yes then you can reference list_pools variable for a particular host by : "hostvars['inventory_hostname']['list_pools']" If not, then you can define this list variable in group_vars/all.yml and just use the variable as is.

– Anant Naugai
Nov 21 '18 at 2:40

So would I be placing "hostvars['inventory_hostname']['list_pools']" where I have '- "{{ list_pool }}"' above, in the "bigip_command" task?

– Pete
Nov 21 '18 at 14:50

Yes precisely. But, that will work only if you're executing this playbook for/on all the hosts you've defined this variable for.

– Anant Naugai
Nov 26 '18 at 2:31

add a comment |

I got this working with the following solution:

hostvars file would look like this:

---    

pre_checks:

    checks:

        pool:

            - name: "pool_123"

            - name: "pool_456"

...

And the play would look like this:

--output truncated---



      - name: Fetch device host_vars

        set_fact:

          device_config: "{{ ((lookup('file','{{playbook_dir}}/host_vars/{{inventory_hostname}}.yml')) | from_yaml) }}"



      - name: Check pool

        bigip_command:

          server: "{{ inventory_hostname }}"

          user: "{{ remote_username }}"

          password: "{{ remote_passwd }}"

          commands:

            - "list ltm pool {{ item }}"       

          validate_certs: no

        with_items:

            - "{{ device_config.pre_checks | json_query('checks.pool[*].name') }}"

        delegate_to: localhost

        when: "'active' in Active_LTM['stdout'][0]"

        register: Pre_Checks



      - name: Verify pool 

        debug: var=item

        with_items: "{{ Pre_Checks.results | map(attribute='stdout_lines') | list }}"

answered Feb 15 at 19:47

Pete

105

add a comment |

I got this working with the following solution:

hostvars file would look like this:

---    

pre_checks:

    checks:

        pool:

            - name: "pool_123"

            - name: "pool_456"

...

And the play would look like this:

--output truncated---



      - name: Fetch device host_vars

        set_fact:

          device_config: "{{ ((lookup('file','{{playbook_dir}}/host_vars/{{inventory_hostname}}.yml')) | from_yaml) }}"



      - name: Check pool

        bigip_command:

          server: "{{ inventory_hostname }}"

          user: "{{ remote_username }}"

          password: "{{ remote_passwd }}"

          commands:

            - "list ltm pool {{ item }}"       

          validate_certs: no

        with_items:

            - "{{ device_config.pre_checks | json_query('checks.pool[*].name') }}"

        delegate_to: localhost

        when: "'active' in Active_LTM['stdout'][0]"

        register: Pre_Checks



      - name: Verify pool 

        debug: var=item

        with_items: "{{ Pre_Checks.results | map(attribute='stdout_lines') | list }}"

answered Feb 15 at 19:47

Pete

105

add a comment |

I got this working with the following solution:

hostvars file would look like this:

---    

pre_checks:

    checks:

        pool:

            - name: "pool_123"

            - name: "pool_456"

...

And the play would look like this:

--output truncated---



      - name: Fetch device host_vars

        set_fact:

          device_config: "{{ ((lookup('file','{{playbook_dir}}/host_vars/{{inventory_hostname}}.yml')) | from_yaml) }}"



      - name: Check pool

        bigip_command:

          server: "{{ inventory_hostname }}"

          user: "{{ remote_username }}"

          password: "{{ remote_passwd }}"

          commands:

            - "list ltm pool {{ item }}"       

          validate_certs: no

        with_items:

            - "{{ device_config.pre_checks | json_query('checks.pool[*].name') }}"

        delegate_to: localhost

        when: "'active' in Active_LTM['stdout'][0]"

        register: Pre_Checks



      - name: Verify pool 

        debug: var=item

        with_items: "{{ Pre_Checks.results | map(attribute='stdout_lines') | list }}"

answered Feb 15 at 19:47

Pete

105

I got this working with the following solution:

hostvars file would look like this:

---    

pre_checks:

    checks:

        pool:

            - name: "pool_123"

            - name: "pool_456"

...

And the play would look like this:

--output truncated---



      - name: Fetch device host_vars

        set_fact:

          device_config: "{{ ((lookup('file','{{playbook_dir}}/host_vars/{{inventory_hostname}}.yml')) | from_yaml) }}"



      - name: Check pool

        bigip_command:

          server: "{{ inventory_hostname }}"

          user: "{{ remote_username }}"

          password: "{{ remote_passwd }}"

          commands:

            - "list ltm pool {{ item }}"       

          validate_certs: no

        with_items:

            - "{{ device_config.pre_checks | json_query('checks.pool[*].name') }}"

        delegate_to: localhost

        when: "'active' in Active_LTM['stdout'][0]"

        register: Pre_Checks



      - name: Verify pool 

        debug: var=item

        with_items: "{{ Pre_Checks.results | map(attribute='stdout_lines') | list }}"

answered Feb 15 at 19:47

Pete

105

answered Feb 15 at 19:47

Pete

105

answered Feb 15 at 19:47

Pete

105

answered Feb 15 at 19:47

Pete

105

add a comment |

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