In my case, there are four nodes which runs ansible. I want to get each and every node ip address. Therefore i tried these.
In my playbook.yml
- name: Ansible
hosts: all
gather_facts: true
vars:
ansible_ec2_local_ipv4: "{{ ansible_default_ipv4.address }}"
roles:
- role: "ansible-mongo/roles/mongo"
- role: "ansible-mongo/roles/replication"
In my main.yml
- name: ensure file exists
copy:
content: ""
dest: /tmp/myconfig.cfg
force: no
group: "{{ mongodb_group }}"
owner: "{{ mongodb_user }}"
mode: 0555
- name: Create List of nodes to be added into Cluster
set_fact: nodelist={%for host in groups['all']%}"{{hostvars[host].ansible_eth0.ipv4.address}}"{% if not loop.last %},{% endif %}{% endfor %}
- debug: msg=[{{nodelist}}]
- name: Set Cluster node list in config file
lineinfile:
path: "/tmp/myconfig.cfg"
line: "hosts: [{{ nodelist }}]"
But as a result when i tried to view /tmp/myconfig.cfg file. I only get one IP.
cat /tmp/myconfig.cfg
hosts: ["10.1.49.149"]
Any idea on this?
Your set_fact loop is overwriting the value of 'nodelist' on each pass, effectively meaning you only ever end up with the last element in the loop. Try this:
- set_fact:
nodelist: "{{ ( nodelist | default([]) ) + [ hostvars[item].ansible_eth0.ipv4.address ] }}"
loop: "{{ groups['all'] }}"
- debug:
var: nodelist | join(',')
(nodelist | default([])) outputs the current value of 'nodelist' or an empty list if it is not set (first pass)
+ [] merges the existing list with a new list, containing a single element - the IP of the host
So 'nodelist' ultimately ends up containing a list of IP's. You can then use | join(',') to turn that into a CSV.
Related
I am performing a grep with multiple items.
---
- hosts: my_host
gather_facts: false
vars:
my_list:
- whatever
- something
tasks:
- name: grep for item in search path
shell: "grep -rIL {{ item }} /tmp"
register: the_grep
loop: "{{ my_list }}"
- debug:
msg: "{{ item.stdout_lines }}"
loop: "{{ the_grep.results }}"
Depending on the result, multiple files could match.
msg:
- /tmp/something.conf
- /tmp/folder/file.txt
Q: How would I configure Ansible to loop over the items in stdout_lines?
The use case I'm solving is to delete .ini sections based on the item, but in this case, Ansible doesn't loop over the stdout_lines.
- name: remove stanza from ini file
ini_file:
path: "{{ item.stdout_lines }}"
section: "{{ item.item }}"
mode: '0600'
state: absent
loop: "{{ the_grep.results }}"
when: item.stdout_lines | length > 0
It seems that this doesn't work, but configuring item.stdout_lines[0] gives the partially expected result, since Ansible will use only the first item in that list. But ofc, not the 2nd and so on.
Perhaps there's a prettier answer, but solved it by using with_nested and creating a json_query:
- name: remove stanza from ini file
ini_file:
path: "{{ item.0 }}"
section: "{{ item.1.item }}"
mode: '0600'
state: absent
with_nested:
- "{{ the_grep | json_query('results[].stdout_lines[]') }}"
- "{{ the_grep.results }}"
I have a playbook that looks like this
---
- hosts: localhost
gather_facts: false
connection: local
vars:
addresses: ['10.10.10.0/28', '10.11.11.0/28']
list_address: []
tasks:
- name: set empty list for cidr
set_fact:
ips_and_masks: []
- name: set up address fact
set_fact:
address: "{{ item.split('/')[0] }} {{ item | ipaddr('netmask') }}"
loop: "{{ item.addresses }}"
- name: create new list
set_fact:
list_address: "{{ list_address + [address] }}"
- name: debug new list
debug:
msg: "Addresses: {{ list_address }}"
I'm trying to get the output to be
"Address": [
"10.10.10.0 255.255.255.240",
"10.11.11.0 255.255.255.240"
]
But the second iteration of the loop overwrites the first so I end up with
"Address": [
"10.11.11.0 255.255.255.240"
]
Is there a way to append it rather than overwrite it?
You don't need address fact at all. Change your task to this:
- name: set up address fact
set_fact:
list_address: "{{ (list_address | default([])) + [ (item.split('/')[0]) + (item | ipaddr('netmask')) ] }}"
loop: "{{ addresses }}"
Then, you can remove create new list task.
You can remove list_address var declaration as well, because it's been initialized in set_fact (as #Zeitounator says in comments)
I pass dictionary from play to task. I use loop to call another task from separate yml file again passing the dictionary. From there I call Jinja2 template and pass the dictionary again. I cannot access the dictionary values from Jinja2.
I tried to pass the dictionary to template with_items and with_dict. Still the same problem.
play:
- role: example
vars:
brands:
brand_1:
name: "brand1"
brand_2:
name: "brand2"
brand_3:
name: "brand_3"
task in role with loop:
- name: Loop through configuration files
include_tasks: generate_config_files.yml
loop: "{{ lookup('dict', brands) }}"
loop_control:
loop_var: outer_item
generate_config_files.yml
- name: Generate the configuration files
template:
src: "consumer.properties.j2"
dest: "{{ kafka_location }}/{{ item.key }}/consumer.properties"
owner: "{{ kafka_user }}"
group: "{{ kafka_group }}"
mode: 0644
with_dict: "{{ outer_item }}"
consumer.properties.j2
{% for item in outer_item %}
Name: "{{ item.name }}"
{% endfor %}
I expect to access the dictionary value in template and generate the same file with different values based on number of brands in dictionary. So if there are 3 brands I expect to generate 3 files with different Name: inside.
Unfortunately I am getting:
"msg": "AnsibleUndefinedVariable: 'str object' has no attribute 'name'"
Any ideas?
1) Indentation of vars: is wrong.
2) The single loop does the job.
3) Iteration in the template is not necessary.
4) Numeric mode must be quoted mode: '0644'.
The playbook below
- hosts: localhost
roles:
- role: example
vars:
kafka_user: admin
kafka_group: admin
kafka_location: /scratch
brands:
brand_1:
name: "brand1"
brand_2:
name: "brand2"
brand_3:
name: "brand_3"
with tasks
$ cat roles/example/tasks/main.yml
- include_tasks: generate_config_files.yml
, with the included task
$ cat roles/example/tasks/generate_config_files.yml
- name: Generate the configuration files
template:
src: "consumer.properties.j2"
dest: "{{ kafka_location }}/{{ item.key }}/consumer.properties"
owner: "{{ kafka_user }}"
group: "{{ kafka_group }}"
mode: '0644'
loop: "{{ brands|dict2items }}"
, and with the template
$ cat roles/example/templates/consumer.properties.j2
Name: "{{ item.value.name }}"
gives
$ tree /scratch/brand_*
/scratch/brand_1
└── consumer.properties
/scratch/brand_2
└── consumer.properties
/scratch/brand_3
└── consumer.properties
$ cat /scratch/brand_*/consumer.properties
Name: "brand1"
Name: "brand2"
Name: "brand_3"
Is this what you're looking for?
I am trying to create a playbook to find out on which openstack server vm is running on. I have created a list of openstack servers in vars and used delegate_to with with_items to iterate through until find vm. I am using wc -l at the end of command and 1 will be success. The aim is, once os-server is found, store servername into a var so this can be used for rest of tasks in playbook. I am unable to get the os server name in a var from the list. I am not an ansible expert. Can anyone help to achieve this? Thanks
- hosts: localhost
vars:
openstack:
- reg1
- reg2
- reg3
- reg4
tasks:
- name: Command to find os server where vm exists
shell: somecommand-to-check-if-vm-exist | wc -l
delegate_to: "{{ item }}"
with_items: "{{ openstack }}"
register: found_server
retries: 1
delay: 1
until: found_server.stdout != "1"
- debug: var=found_server
- name: set fact
set_fact: os-server = "{{ item.item }}"
when: item.stdout == "1"
with_items: "{{ found_server.results }}"
register: var2
- name: debug var
debug: var=var2
- debug: var=os-server
There's no need to retry/until here and for the second loop as well.
Try this:
- hosts: localhost
vars:
openstack: [reg1, reg2, reg3, reg4]
tasks:
- name: Command to find os server where vm exists
shell: somecommand-to-check-if-vm-exist | wc -l
delegate_to: "{{ item }}"
with_items: "{{ openstack }}"
register: vm_check
- name: set fact
set_fact:
os_server: "{{ (vm_check.results | selectattr('stdout','equalto','1') | list | first).item }}"
- name: debug var
debug:
msg: "{{ os_server }}"
This will register results from every server into vm_check.results, and then just select elements with stdout set to 1, take first element of it it (I suppose you always have one server with VM), and get .item of this element which contains the item of original loop (in our case it is server's name).
Based on this question
Ansible recursive checks in playbooks
I have another one.
We need to go through this structure
Zone spec https://gist.github.com/git001/9230f041aaa34d22ec82eb17d444550c
Now I can adress the hostnames via the array index but can I also iterate over the array "hosts"?
playbook
--
- hosts: all
gather_facts: no
vars_files:
- "../doc/application-zone-spec.yml"
roles:
- { role: ingress_add, customers: "{{ application_zone_spec }}" }
role
- name: Print ingress hostnames
debug: msg="{{ item.hosts.0.hostname }} {{ item.hosts.1.hostname }}"
with_items: "{{ customers.ingress }}"
We use.
ansible-playbook --version
ansible-playbook 2.1.0.0
config file = /etc/ansible/ansible.cfg
configured module search path = Default w/o overrides
Use with_subelements:
- name: Print ingress hostnames
debug: msg="{{ item.0.type }} {{ item.1.hostname }}"
with_subelements:
- "{{ customers.ingress }}"
- "hosts"
There is quite a bit of examples for different loops in the Loops section of the documentation.