I am new to Ansible.
I have simple ansible playbook it gets uses ec2_asg_facts and get every thing about particular AWS auto scaling group. Assume currently, I have only one Auto scaling group.
I was able get instance id, and i have run ec2_remote_facts on those id.
Problem:
Now I want to fatch private IP address of instance, I have an error that is pasted below. Please can any one help me.
---
- name: Create a new Demo EC2 instance
hosts: localhost
connection: local
gather_facts: False
tasks:
- name: Find ASG in AWS
ec2_asg_facts:
aws_access_key: ------------------------
aws_secret_key: ----------------------
region: us-east-1
register: auto_scaling_group
register: ec2_asg_facts_results
- name: Create list of instance_ids
set_fact:
ec2_asg_instance_ids: "{{ ec2_asg_facts_results.results[0].instances | map(attribute='instance_id') | list }}"
- name: EC2 facts
ec2_remote_facts:
region: us-east-1
aws_access_key: ---------------------------------
aws_secret_key: ---------------------------------
filters:
instance-id: "{{ ec2_asg_instance_ids.instances[0].interfaces | map(attribute='id') }}"
**ERROR**
TASK [EC2 facts] ********************************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'list object' has no attribute 'instances'\n\nThe error appears to have been in '/root/ec2-asg.yml': line 25, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n ec2_asg_instance_ids: \"{{ ec2_asg_facts_results.results[0].instances | map(attribute='instance_id') | list }}\"\n - name: EC2 facts\n
You need to use with_items to access the result of the registered variable and then get the first item of "asg_instance_ids" when accessing it later:
- name: Create list of instance_ids
set_fact:
ec2_asg_instance_ids: "{{ item.instances | map(attribute='instance_id') | list }}"
with_items: "{{ ec2_asg_facts_results.results }}"
Also try debbuging the variable "ec2_asg_facts_results" to see if you actually have results in there:
- debug:
msg: "{{ ec2_asg_facts_results }}"
Related
I need to get the DNS server(s) from my network, I tried using:
- hosts: localhost
gather_facts: no
tasks:
- name: check resolv.conf exists
stat:
path: /etc/resolv.conf
register: resolv_conf
- name: check nameservers list in resolv.conf
debug:
msg: "{{ contents }}"
vars:
contents: "{{ lookup('file', '/etc/resolv.conf') | regex_findall('\\s*nameserver\\s*(.*)') }}"
when: resolv_conf.stat.exists == True
But this does not quite gives the result I need.
Will it be possible to write a playbook in such a way that the result looks like the below?
hostname;dns1;dns2;dnsN
The declaration below gives the list of nameservers
nameservers: "{{ lookup('file', '/etc/resolv.conf').splitlines()|
select('match', '^nameserver.*$')|
map('split', ' ')|
map('last')|list }}"
You can join the hostname and the items on the list
msg: "{{ inventory_hostname }};{{ nameservers|join(';') }}"
Notes
Example of a complete playbook for testing
- hosts: localhost
vars:
nameservers: "{{ lookup('file', '/etc/resolv.conf').splitlines()|
select('match', '^nameserver.*$')|
map('split', ' ')|
map('last')|list }}"
tasks:
- debug:
var: nameservers
- debug:
msg: |
{{ inventory_hostname }};{{ nameservers|join(';') }}
The simplified declaration below works fine if there is no nameserver.* in the comments
nameservers: "{{ lookup('file', '/etc/resolv.conf')|
regex_findall('\\s*nameserver\\s*(.*)') }}"
Unfortunately, the Linux default file /etc/resolv.conf contains the comment:
| # run "systemd-resolve --status" to see details about the actual nameservers.
This regex will match nameservers.
nameservers:
- s.
You can solve this problem by putting at least one space behind the keyword nameserver.
regex_findall('\\s*nameserver\\s+(.*)') }}"
However, this won't help if there is the keyword nameserver in the comment.
Q: "No filter named 'split'"
A: There is no filter split in Ansible less than 2.11. Use regex_replace instead
nameservers: "{{ lookup('file', '/etc/resolv.conf').splitlines()|
select('match', '^nameserver.*$')|
map('regex_replace', '^(.*) (.*)$', '\\2')|list }}"
Since your regex_findall already creates you a list with all DNS servers, you just need to add the hostname to that list and join the whole list with a semicolon.
- name: check nameservers list in resolv.conf
debug:
msg: >-
{{
(
[ ansible_hostname ] +
lookup('file', '/etc/resolv.conf', errors='ignore')
| regex_findall('\s*nameserver\s*(.*)')
) | join(';')
}}
Which will result in something like (b176263884e6 being the actual hostname of a container):
TASK [check nameservers list in resolv.conf] *****************************
ok: [localhost] =>
msg: b176263884e6;1.1.1.1;4.4.4.4;8.8.8.8
Note that you don't even need the stat task, as you can ignore errors of the lookup with errors='ignore'.
This will, then, give you only the hostname, along with a warning:
TASK [check nameservers list in resolv.conf] *****************************
[WARNING]: Unable to find '/etc/resolv.conf' in expected paths
(use -vvvvv to see paths)
ok: [localhost] =>
msg: b176263884e6
I have playbook as below:
- name: fetch host group name
set_fact:
group_name: '{{ group_names[0] }}'
- name: get memory and storage minimum requirements
set_fact:
min_memory: "{{ group_name.memory }}"
min_storage: "{{ group_name.storage }}"
In defaults/main.yml
#memory and storage settings
primary:
memory: 32
storage: 128
my inventory host is in primary group.
when I run playbook, I am seeing below error.
TASK [ansible-elastic-cloud-enterprise : get memory and storage minimum requirements] ****************************************************************************************************************************
fatal: [192.168.153.5]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'str object' has no attribute 'memory'\n\nThe error appears to be in '/cygdrive/c/Users/test/Downloads/ansible-elastic-cloud-enterprise-master/roles/ansible-elastic-cloud-enterprise/tasks/base/general/checkmemorystorage.yml': line 7, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: get memory and storage minimum requirements\n ^ here\n"}
you want to use the content of variable like another variable, so use lookup vars:
sample:
- name: dynamic var
hosts: localhost
gather_facts: no
vars:
groupname: ["primary", "secondary"]
primary:
memory: 32
storage: 128
tasks:
- set_fact:
id: "{{ lookup('vars', groupname[0]) }}"
- debug: msg="{{ id.memory }} -- {{ id.storage }} "
result:
ok: [localhost] => {
"msg": "32 -- 128 "
in your case you should write:
- name: fetch host group name
set_fact:
group_name: '{{ lookup("vars", group_names[0] }}'
I want to be able to reference the variable vpc_info registered by file create-public-vpc from file create-public-sunbet
/etc/ansible/roles/ec2/tasks/main.yml
# tasks file for ec2-provision
- name:
import_tasks: create-vpc.yml
import_tasks: create-public-subnet.yml
/etc/ansible/roles/ec2/vars/main.yml
---
# vars file for ec2-provision
################################### designate python interpreter ########################
ansible_python_interpreter: /usr/local/bin/python3.8
############################## VPC INFO #########################################
vpc_name: "My VPC"
vpc_cidr_block: "10.0.0.0/16"
aws_region: "us-east-1"
################################### VPC Subnet ###############################################
aws_zone: "us-east-1a"
# Subnets
vpc_public_subnet_cidr: "10.0.0.0/24"
# Subnet
vpc_private_subnet_cidr: "10.0.1.0/24"
create-vpc.yml
- name: Create AWS VPC
ec2_vpc_net:
name: "{{ vpc_name }}"
cidr_block: "{{ vpc_cidr_block }}"
region: "{{ aws_region }}"
aws_access_key: "{{ access_key }}"
aws_secret_key: "{{ secret_key }}"
state: present
register: vpc_info
- name: Set vpc_info as fact
set_fact:
vpc_info_fact: "{{ vpc_info }}"
create-public-sunbet.yml
- name: print vpc_info_fact
debug:
msg: "{{ hostvars['localhost']['vpc_info_fact'] }}"
- name: Create Public Subnet in VPC
ec2_vpc_subnet:
vpc_id: "{{ vpc_info['vpc']['id'] }}"
cidr: "{{ vpc_public_subnet_cidr }}"
region: "{{ aws_region }}"
az: "{{ aws_zone }}"
aws_access_key: "{{ access_key }}"
aws_secret_key: "{{ secret_key }}"
state: present
tags:
Name: Public Subnet
register: public_subnet_info
When I run ansible-playbook ec2-provision.yml, the error message is as follows:
[root#VM-0-14-centos tasks]# ansible-playbook ec2-provision.yml
[WARNING]: While constructing a mapping from /etc/ansible/roles/EC2/tasks/main.yml, line 4, column 3, found a duplicate dict key (import_tasks). Using last defined value
only.
PLAY [localhost] ************************************************************************************************************************************************************
TASK [Gathering Facts] ******************************************************************************************************************************************************
ok: [localhost]
TASK [EC2 : print vpc_info_fact] ********************************************************************************************************************************************
fatal: [localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'vpc_info_fact' is undefined\n\nThe error appears to be in '/etc/ansible/roles/EC2/tasks/create-public-subnet.yml': line 3, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: print vpc_info_fact\n ^ here\n"}
PLAY RECAP ******************************************************************************************************************************************************************
localhost : ok=1 changed=0 unreachable=0 failed=1 skipped=0 rescued=0 ignored=0
Try to set the variable value as a fact once the variable is created and then you'd access the corresponding fact via hostvars.
For example:
- name: Create AWS VPC
ec2_vpc_net:
name: "{{ vpc_name }}"
cidr_block: "{{ vpc_cidr_block }}"
region: "{{ aws_region }}"
aws_access_key: "{{ access_key }}"
aws_secret_key: "{{ secret_key }}"
state: present
register: vpc_info
- name: Set vpc_info as fact
set_fact: vpc_info_fact="{{ vpc_info }}"
To access it from a different file, we have the following task:
- name: Create Public Subnet in VPC
ec2_vpc_subnet:
vpc_id: "{{ hostvars['localhost']['vpc_info']['vpc']['id'] }}"
cidr: "{{ vpc_public_subnet_cidr }}"
region: "{{ aws_region }}"
az: "{{ aws_zone }}"
aws_access_key: "{{ access_key }}"
aws_secret_key: "{{ secret_key }}"
state: present
tags:
Name: Public Subnet
register: public_subnet_info
Your main.yml contains a tasks with two modules. It should be
- name: Create VPC
import_tasks: create-vpc.yml
- name: Create Public Subnets
import_tasks: create-public-subnet.yml
The running playbooks prints the warning about that issue.
[WARNING]: While constructing a mapping from /etc/ansible/roles/EC2/tasks/main.yml, line 4, column 3, found a duplicate dict key (import_tasks). Using last defined value
only.
Ansible cannot have more then one module per task - and include_tasks is a module. It picks the last module, if there are multiple modules in one task (after writing the warning message and not exiting).
This is the main problem of all your issues. Everything else looks ok to me.
How can I access a variable of other host? I'd like to access the slack_token varaiable of my localhost on the working_host.
- hosts: localhost
vars:
slack_token: 123123123
tasks:
- block:
- name: test
debug: msg="{{ slack_token }}"
- hosts: "{{ working_host }}"
vars:
slack_token: "{{ hostvars['localhost']['slack_token'] }}"
tasks:
- block:
- name: test2
debug: msg={{ slack_token }}
The error message:
fatal: [localhost]: FAILED! => {"failed": true, "msg": "the field
'args' has an invalid value, which appears to include a variable that
is undefined. The error was: {{ hostvars['localhost']['slack_token']
}}: 'dict object' has no attribute 'slack_token'
Any idea?
Just answered a somewhat same question in my previous post.
Here's what I used:
set_fact:
myVar: "{{ hostvars[groups['all'][0]]['slack_token'] | default(False) }}"
But you're using two plays in a playbook.
You can also try to copy a file to a machine stating the fact.
To access slack_token from everywhere, either:
pass it as extra variable with -e slack_token=zzzz
define it in your inventory under all group
I am iterating over yml file and filtering and keeping those microservice metadata in the list which is in the command line argument passed
ansible-playbook -i inventory/inventory sp-deployer.yml --ask-vault-pass --extra-vars '{"microservices_list":[iwan,csrservice]}'
Finally I need these three value from the yml file based on the criteria mentioned above. I have created ansible sp-deployer.yml for this purpose. I have used set_facts for creating dynamic list. First list works fine but the moment I create second one it fails.
name: "ms_service"
port: "830"
streams: "noti,jk-noti"
vars.yml
version: 1
name: user
jobs:
ns1:
ip: "1.1.1.1"
ns_version: "4.2"
f_packs:
- f-pack-1:
name: "pack1"
microservices:
- microservice-1:
name: "ms_service"
port: "830"
streams: "noti,jk-noti"
- microservice-2:
name: "ms_service1"
port: "830"
streams: "noti1,jk-noti1"
- f-pack-2:
name: "pack4"
microservices:
- microservice-1:
name: "ms_service3"
port: "830"
streams: "noti,jk-noti3"
- microservice-2:
name: "ms_service4"
port: "830"
streams: "noti,jk-noti4"
- microservice-3:
name: "ms_service5"
port: "830"
streams: "noti,jk-noti5"
Script:sp-deployer.yml
---
- hosts: localhost
vars_files:
- ./vars.yml
sudo: yes
tasks:
- name: Reading vars.yml file and preparing list of microservice with its metadata
set_fact: foo_item="{{ item.1 }}"
register: result
with_subelements:
- "{{ jobs.ns1.f_packs }}" ###item.0
- microservices ###item.1
- name: make first list
set_fact: foo="{{ result.results | map(attribute='ansible_facts.foo_item') | list }}"
- name: print register
debug: msg="{{ item }}" verbosity=3
with_items:
- "{{ foo }}"
- name: Filtering micro service list with match found from command line input
when: item[0].name == item[1]
set_fact: foo_item1="{{ item.0 }}"
register: result_final
with_nested:
- "{{ foo }}"
- "{{ microservices_list }}"
- name: make a list
set_fact: foo1="{{ result_final.results | map(attribute='ansible_facts.foo_item1') | list }}"
ERROR
TASK [make a list] *************************************************************
fatal: [localhost]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'dict object' has no attribute 'ansible_facts'\n\nThe error appears to have been in '/home/user/ansible/sp-deployer1.yml': line 40, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: make a list\n ^ here\n"}
to retry, use: --limit #/home/user/ansible/sp-deployer1.retry
PLAY RECAP *********************************************************************
localhost : ok=4 changed=0 unreachable=0 failed=1
Friendly advice: always check registered variables with debug if you bump on such errors.
The reason for your error is that set_fact don't yield ansible_facts dict if the loop iteration is skipped.
And I see you have when statement in your loop.
To overcome this error, you should select only those loop iterations, that have ansible_facts dict defined:
- name: make a list
set_fact: foo1="{{ result_final.results | selectattr('ansible_facts','defined') | map(attribute='ansible_facts.foo_item1') | list }}"