I'm trying to fetch the names of host groups in Ansible that have a specific prefix. Right now, I'm trying to delegate a template task to servers under host groups with the prefix "config_".
I'm using json_query which uses JMESPath expressions. The query however is incorrect. Can anyone guess what I'm missing?
- name: Create configsvr config file
template: src=mongod.conf.j2 dest={{ mongod.conf.path }} owner=mongod group=mongod mode=0600
delegate_to: "{{ groups|json_query([?starts_with(#, `config_`)]) }}"
Error msg:
FAILED! => {"failed": true, "msg": "template error while templating string: unexpected char u'?' at 22. String: {{ groups|json_query([?starts_with(#, `config_m`)]) }}"}
You should simply use built-in patterns to select your target hosts.
---
- hosts: conf_*
tasks:
- name: Create configsvr config file
template:
src: mongod.conf.j2
dest: "{{ mongod.conf.path }}"
owner: mongod
group: mongod
mode: 0600
You can improve your inventory by using groups of groups, like so:
[conf:children]
conf_a
conf_b
conf_c
[conf_a]
srv1
[conf_b]
srv2
[conf_c]
srv3
And then target conf group in your playbook:
---
- hosts: conf
tasks:
- name: Create configsvr config file
template:
src: mongod.conf.j2
dest: "{{ mongod.conf.path }}"
owner: mongod
group: mongod
mode: 0600
Related
I'm having the following jinja template:
# Configure static IP for Ubuntu 22.04 machine
network:
ethernets:
eth0:
addresses:
- {{ item.new_static_ip }}/24
nameservers:
addresses: [{{ item.netplan_name_servers }}] # Populate this list with the DNS servers necessary.
renderer: networkd
routes:
- to: default
via: {{ item.netplan_router_gateway }}
version: 2
In my task, I have the following:
- name: Copy the template 00-installer-config.yaml over
template:
src: 00-netplan-static-ip-config-ubuntu.j2
dest: /etc/netplan/00-installer-config.yaml
owner: root
group: root
mode: 0644
backup: yes
with_items:
- { new_static_ip: "{{ ansible_default_ipv4.address }}", netplan_name_servers: "1.1.1.1", netplan_router_gateway: "{{ router_gateway_address }}" }
I get an error like this:
FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'new_static_ip' is undefined
Is there anything that I'm missing here?
Fixed it by using vars like this:
# Set Static IP using netplan
- name: Copy the template 00-installer-config.yaml over
vars:
new_static_ip: "{{ ansible_default_ipv4.address }}"
netplan_name_servers: "1.1.1.1"
netplan_router_gateway: "{{ router_gateway_address }}"
template:
src: 00-netplan-static-ip-config-ubuntu.j2
dest: /etc/netplan/00-installer-config.yaml
owner: root
group: root
mode: 0644
backup: yes
Need to loop through the source files one by one for all hosts.
- hosts: epson*
become: yes
tasks:
- name: replace id
vars:
id: abc
template:
src: epson1.j2
dest: /home/epson.config
HOSTS FILE
[epson1]
1.1.1.1
[epson2]
1.1.1.1
[epson3]
1.1.1.1
and many more
epson1.j2
create element edge0 {
state="ENABLED"
id="{{ id }}"}
epson2.j2
create element edge1 {
state="ENABLED"
id="{{ id }}"}
I have many template files like epson1.j2, epson2.j2 and so on.
Right now i am able to do template variable replace for 1 host and for 1 file. How can I do for all files for all hosts.
like - host:epson1, src: epson1.j2, dest: /home/epson.config
host:epson2, src: epson2.j2, dest: /home/epson.config
host:epson3, src: epson3.j2, dest: /home/epson.config
need looping inside src for every hosts
You should be able to accomplish this simply by using the inventory_hostname magic variable.
- hosts: epson*
become: yes
tasks:
- name: replace id
vars:
id: abc
template:
src: {{ inventory_hostname }}.j2
dest: /home/epson.config
The Play will run once for each host and the correct .j2 will be used.
I am using the following ansible code to create multiple unix user accounts
---
- hosts: test
become: true
tasks:
- name: more complex items to add several users
user:
name: "{{ item.name }}"
uid: "{{ item.uid }}"
groups: "{{ item.groups }}"
state: present
with_items: "{{ user_details }}"
I am storing the user information by using a separate a variable file as below
`cat /etc/ansible/vars.yml
---
user_details:
- { name: testuser1, uid: 1002, groups: "admin, logs" }
- { name: testuser2, uid: 1003, groups: logs: }`
To execute above playbook , I tried with both the commands below
sudo ansible-playbook /etc/ansible/userloop.yml -e /etc/ansible/vars.yml
sudo ansible-playbook /etc/ansible/userloop.yml
but both commands are failing with below error
fatal: [host-003]: FAILED! => {"msg": "'user_details' is undefined"}
fatal: [host-004]: FAILED! => {"msg": "'user_details' is undefined"}
How to resolve the issue ? I want to maintain a separate variable file to store the user information rather then putting them in the same playbook file .
You can also refer the multiple variable files in playbooks like below
- hosts: all
become: true
vars_files:
- /etc/ansible/vars.yml
tasks:
- name: more complex items to add several users
user:
name: "{{ item.name }}"
uid: "{{ item.uid }}"
groups: "{{ item.groups }}"
state: present
with_items: "{{ user_details }}"
The type of variables is in the column "Parameter" of the module user. Try the structure of the data below
user_details:
- {name: 'testuser1', uid: 1002, groups: ['admin', 'logs']}
- {name: 'testuser2', uid: 1003, groups: ['logs']}
You are missing # while passing the vars.yml. Hence, the ansible is not reading the file. Try the below command. It works for me.
sudo ansible-playbook /etc/ansible/userloop.yml -e #/etc/ansible/vars.yml
I am stuck in iterating over the list of a dictionary. Sample vars.yml and the minimal playbook is bellow.
---
- hosts: localhost
connection: local
gather_facts: false
become: false
vars:
csvfile: "{{ lookup('file', 'vars/users.csv') }}"
tasks:
- name: Convert CSV to YAML
template:
src: "./users_csv.j2"
dest: "vars/users.yml"
run_once: true
- name: Include users from users.yml to users variable
include_vars:
file: vars/users.yml
name: users
- debug:
msg: "{{ users.value }}"
with_dict:
- "{{ users }}"
My Jinja2 template produces a list of dictionaries in YAML format as below:
--
users:
- username: Auser1
group: Admin
- username: Auser2
group: Admin
- username: Auser3
group: User
Anyhow, when I am iterating the dictionary, I am not able to get for example a username or group.
Most far I got is getting a fatal error message saying:
fatal: [localhost]: FAILED! => {"msg": "with_dict expects a dict"}
I know how to iterate over the list, but I don't have an idea why it fails here.
The users is not a dictionary, its a list variable of dictionaries.
if you want to parse this variable in a loop, you can use:
- debug:
msg: "username: {{ item.username }}, group: {{ item.group }}"
with_items:
- "{{ users.users }}"
hope it helps
UPDATE
i noticed now that when including the var file, you pass the name: users instruction as well. this cause all the variables of the file to be placed under the users variable. So to refer to the users list which is defined in the variable file, you need to use users.users.
updated the with_items to:
with_items:
- "{{ users.users }}"
I'm trying to use templates with different sets of variables for each itteration of a determined set of tasks. For example, in one of the tasks I'd like to set specific values for postgres:
- name: Define values for postgres-ds
template:
src: postgres-ds.xml.j2
dest: /opt/ear_{{ instance_control.value }}/postgres-ds.xml
vars: "{{ postgres_desenv }}"
notify: Restart Service
In role/vars/main.yaml, I defined:
postgres_desenv:
var1: somevalue
var2: someothervalue
...
Still, I get the following error:
fatal: [rmt]: FAILED! => {
"failed": true,
"reason": "Vars in a Task must be specified as a dictionary, or a list of dictionaries
...
When I try to use the same variable in another context, it works fine:
- debug:
msg: "{{ item.key }} - {{ item.value }}"
with_dict: "{{ postgres_desenv }}"
I tried following the answers to this question but I'm still stuck.
My next step is to use a variable to call the variable inside vars, something like:
- name: Define values for postgres-ds
template:
src: postgres-ds.xml.j2
dest: /opt/ear_{{ instance_control.value }}/postgres-ds.xml
vars: postgres_{{ another_var }}
notify: Restart Service
You can do something like this:
- name: Define values for postgres-ds
template:
src: postgres-ds.xml.j2
dest: /opt/ear_{{ instance_control.value }}/postgres-ds.xml
vars:
settings: "{{ postgres_desenv }}"
notify: Restart Service
Then within the template you could refer to, e.g.,
{{ settings.var1 }}
In my case, following the answer above, all i had to do is using {{ item.value.(mydictkey) }} and that's it
In my case i defined a global variable like so:
vars:
vhosts:
web1
port: 8080
dir: /mywebsite
web2:
...
Then in the task I used:
- name: Render template
template:
src: "../templates/httpd.vhost.conf.j2" # Local template
dest: "/etc/httpd/conf.d/{{ item.key }}.conf" # Remote destination
owner: root
group: root
mode: 644
with_dict: "{{ vhosts }}"
In the template I used:
<VirtualHost *:{{ item.value.port }}>
DocumentRoot /var/www/{{ item.value.dir }}
</VirtualHost>
If postgres_desenv is defined in vars/main.yml that will be loaded automatically and be available to the role and rest of the playbook. Why do you have to specify that again using "vars" option in the template module task?