#$ cat bbb.yml
---
- hosts: localhost
gather_facts: False
vars_prompt:
- name: epcrange
prompt: Enter the number of EPCs that you want to configure
private: False
default: "1"
- name: serverrange
prompt: Enter the number of Cleints that you want to configure
private: False
defualt: "1"
pre_tasks:
- name: Set EPC node id variables
set_fact:
# start: "{{ epcrange.split('..')[0] }}"
# stop: "{{ serverrange.split('..')[-1] }}"
start: 1
stop: "{{epcrange}}"
- name: "Add EPC hosts:"
add_host: name="vm{{item}}" groups=just_created_epcs
with_sequence: "start={{start}} end={{stop}} "
- name: Set Client node id variable
set_fact:
start: 1
stop: "{{serverrange}}"
- name: "Add Client hosts:"
add_host: name="vm{{item}}" groups=just_created_clients
with_sequence: "start={{start}} end={{stop}} "
- hosts: just_created_epcs
serial: 1
gather_facts: False
tasks:
serial: 1
gather_facts: False
vars_prompt:
- name: ServerIP
prompt: Enter the ServerIP to replace
private: False
default: '11.11.4.10'
- name: ServerIPRange
prompt: Enter the ServerIP range
private: False
default: '128'
vars:
- String1: '"ServerIP"'
- String2: '"ServerIPRange"'
#
#
- name: Replace ServerIP in config_file
shell: cd /home/imran/Desktop/tobefetched; sed -i '/{{String1}}/ c
"ServerIP" ':' "{{ServerIP}}" ' config_file
when: inventory_hostname == "vm1" # workaround, run_once won't work
ignore_errors: yes
- name: Replace ServerIPRange in config_file
shell: cd /home/imran/Desktop/tobefetched; sed -i '/{{String2}}/ c
"ServerIPRange" ':' "{{ServerIPRange}}" ' config_file
when: inventory_hostname == "vm1" # workaround, run_once won't work
ignore_errors: yes
#The first time ,the address that the user enters is copied onto
config_file on remote server as is
#Now I need to do some mathematics here and so that I can write a value
into the config_file of the remote machine based on my calculations here.
#Something like: The next VM(s) gets values written into the config_file
according to some formula (explained in c++ below)
int x=0;
for (int i=1; i<epcrange; i+=pow(2,x))
//pow is a math function with pow(2,x)= 2^x
{
New_LastIPOctet = Last_ServerIPOctet +ServerIPRange/epcrange;
//user always enters values in the power of 2, Last_ServerIPOctet is
accessed from the IP that the user enters
NewIP=append (ServerIP, New_LastIPOctet);
//some function that appends a new value to the last IPV4
octet of a previous IPV4 address.
SendToFileOnRemoteVM = send ();
//send to my remote vm and make changes to config_file
x++;
}
//all values are integers
As we can see here, epc range is decided by the user, so the loop is not
hard-coded.
I am sorry for using c++ and jumbling it all up, but there is no easy way
to explain this
On Wednesday, August 20, 2014 5:16:36 AM UTC-7, Michael DeHaan wrote:
>
> I'm perhaps not understanding the underlying question, but:
>
> {{ an_array | length }}
>
> will tell you the length of an array in Jinja2
>
>
>
>
> On Wed, Aug 20, 2014 at 8:11 AM, Imran Khan <[email protected]
> <javascript:>> wrote:
>
>> Thanks, but to use this I will need to know how many times this task will
>> run. That is, in-fact, decided by the person running the playbook, at run
>> time
>>
>>
>> On Wednesday, August 20, 2014 5:01:56 AM UTC-7, Michael DeHaan wrote:
>>
>>> This is easy to experiment with, by constructing a simple playbook:
>>>
>>> - shell: echo {{ foo }}
>>> with_items: [1,2,3,4,5]
>>> register: result
>>>
>>> - debug: var=result
>>>
>>> You will see that the result variable does get registered as an array.
>>>
>>>
>>>
>>>
>>> On Wed, Aug 20, 2014 at 7:53 AM, Imran Khan <[email protected]>
>>> wrote:
>>>
>>>> What I need is a register array!
>>>>
>>>>
>>>> On Wednesday, August 20, 2014 4:48:17 AM UTC-7, Imran Khan wrote:
>>>>
>>>>> I would like to know that If I run a task in a loop and save the value
>>>>> in a register, how can I save the values so that I have them accessible
>>>>> when I need them
>>>>> P.S: I am running my playbook using *serial: 1 .* So, when I iterate
>>>>> a task, say 5 times, it should save them all seperately, so that when the
>>>>> playbook runs serially the second or third time around, I can use the
>>>>> registered values as needed.
>>>>> Example:
>>>>>
>>>>> - hosts: just_created_clients
>>>>> serial: 1
>>>>> gather_facts: False
>>>>>
>>>>> #
>>>>> #
>>>>> tasks:
>>>>> #
>>>>> #
>>>>> - name: Check if the changes to config_file were successful
>>>>> shell: cat /home/imran/Desktop/tobefetched/config_file
>>>>> with_sequence: count=5
>>>>> register: my_content
>>>>> ignore_errors: yes
>>>>> #
>>>>> #
>>>>>
>>>>>
>>>>> Now, how do I access the values in the register(s) ? Note: I will not
>>>>> be immediately using these values, so can't have a task immediately
>>>>> following this task, which uses the results of this register
>>>>> sequentially.
>>>>> What I need is a register array!
>>>>>
>>>> --
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>>>> msgid/ansible-project/abdb1d0d-05e1-4c1a-ba4e-
>>>> f63a56ca56b0%40googlegroups.com
>>>> <https://groups.google.com/d/msgid/ansible-project/abdb1d0d-05e1-4c1a-ba4e-f63a56ca56b0%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>
>>> --
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>>
>> <https://groups.google.com/d/msgid/ansible-project/06e4b287-486b-480a-8c4e-3f26c2c8d145%40googlegroups.com?utm_medium=email&utm_source=footer>
>> .
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
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