Is there a command in Ansible in which I can see all the variables for a host. such as variables from the inventory and also from the host and group vars.
Ive tried ansible-inventory but that just provided inventory vars. The other options all seem to be printing via a playbook.
EDIT:
Ive tried the following.
ansible -m debug -i ../inventory.yaml -a "var=hostvars[inventory_hostname]" "spine1-nxos"
But this only works when Im within the folder of my host vars therefore ... the final questions are: how do I get the group vars and how do I provide it to the folder with the host and group vars.
Related
The hosts which I address in the Playbook maint-change.yml belong to two Groups (instancegroup1 & instancegroup2 with sveral hosts in each group) like this:
- hosts: "{{ server | default('instancegroup1 instancegroup2') }}"
So if I just want to run the Playbook against one host I will limit with (-e EXTRA_VARS) the variable server and the hostname from the instance:
ansible-playbook maint-change.yml -e server=test.instance2
In that Case the "test.instance2" is listet in the inventory file of instancegroup2 and the playbook will only run against the host "test.instance2" successfully.
But how is is that possible with awx? If I have created the template with the same Playbook "maint-change.yml" which is using the variable server as I mentioned above, it's not possible to paste the "server=test.instance2" in the EXTRA VARIABLES field of the Template. Is there any Solution to set the specific variable server from the Playbook in the EXTRA VARIABLES field from awx's Template?
I believe you are using AWX Job templates. You can use the limit check option in your templates. Here's a screenshot of that -
I have an ansible playbook that I run from below command line and it works fine.
ansible-playbook -e 'host_key_checking=False' -e 'num_serial=10' test.yml -u golden
It works on the hosts specified in /etc/ansible/hosts file. But is there any way to pass hostnames directly on the command line or generate new file with hostname line by line in it so that my ansible works on that hostnames instead of working from default /etc/ansible/hosts file?
Below is my ansible file:
# This will copy files
---
- hosts: servers
serial: "{{ num_serial }}"
tasks:
- name: copy files to server
shell: "(ssh -o StrictHostKeyChecking=no abc.host.com 'ls -1 /var/lib/workspace/data/*' | parallel -j20 'scp -o StrictHostKeyChecking=no abc.host.com:{} /data/holder/files/procs/')"
- name: sleep for 3 sec
pause: seconds=3
Now I wanted to generate new file which will have all the servers line by line and then my ansible play book work on that file instead? Is this possible?
I am running ansible 2.6.3 version.
The question has been answered probably but will just answer again to add more points.
Always look for command line for help related to the arguments or any info needed.
ansible-playbook --help | grep inventory
-i INVENTORY, --inventory=INVENTORY, --inventory-file=INVENTORY
specify inventory host path or comma separated host
list. --inventory-file is deprecated
The support of ansible inventory in file format is with two extensions:
yml
ini --> specifying ini extension is not mandatory.
The inventory link provides more info on the format and should be referred before choosing any format to implement.
Adding #HermanTheGermanHesse answer's so that all the possible points are covered.
In case the above is not used/you don't want to use. Ansible at last will refer the ansible.cfg for the hosts and variable definition.
[defaults]
inventory = path/to/hosts
From here:
The ansible.cfg file will be chosen in this order:
ANSIBLE_CONFIG environment variable
/ansible.cfg
~/.ansible.cfg
/etc/ansible/ansible.cfg
You can use the -i flag to specify the inventory to use. For example:
ansible-playbook -i hosts play.yml
A way to specify the inventory file to use is to set inventory in the ansible.cfg-file as such:
[defaults]
inventory = path/to/hosts
From here:
The ansible.cfg file will be chosen in this order:
ANSIBLE_CONFIG environment variable
./ansible.cfg
~/.ansible.cfg
/etc/ansible/ansible.cfg
EDIT
From your comment:
[WARNING]: Could not match supplied host pattern, ignoring: servers PLAY [servers]
It seems that ansible doesn't recognize hosts passed with the -i Flag as belonging to a group. Since you mentioned in chat that you generate a list with the passed hosts, I'd suggest creating a file where the list of hosts to passed is made to belong to a group callerd [servers] and passing the path to it with the -i Flag.
I am new to Ansible and trying to learn the basics. But apparently I already fail with setting up the inventory file.
For the setup:
1) Installed ansible via homebrew
2) as no ansible.cfg was created, I created one manually in /etc/ansible/ansible.cfg
ansible.cfg
[defaults]
inventory = /etc/ansible/hosts/;
3) a hosts file was also not there, so I created the same in /etc/ansible/hosts
hosts
Test1
Test2
When I run ansible all --list-hosts I get the error:
[WARNING]: Unable to parse /etc/ansible/hosts; as an inventory source
As the path is correctly reflected in the error, I at least assume, the cfg is read correctly. But still the target file hosts is not being recognized. I tried differennt paths. What do I need to change?
remove /; from the end of the inventory-line in /etc/ansible/ansible.cfg:
cat /etc/ansible/ansible.cfg
[defaults]
inventory = /etc/ansible/hosts
you could use ansible -i /etc/ansible/hosts to tell ansible use this inventory file.
So from what I gather, we can use ansible.cfg to set the default inventory file that ansible looks for when running a playbook.
We can also override that inventory by using the -i parameter when running an ansible playbook via the command line.
Is there a way for me to specify a specific special inventory file inside a playbook without using the command line or changing the ansible.cfg file?
You can form a dynamic inventory from inside your playbook using add_host module.
But you will have to write some inventory files parsers to feed correct parameters to add_host.
In general this is the wrong way to go. You should have playbooks and inventories separated.
I'm running an ansible playbook on a list of hosts with a host file:
[consul]
${HOST1} ansible_ssh_host=${HOST1} ansible_ssh_user=devops ansible_ssh_pass=blabla
${HOST2} ansible_ssh_host=${HOST2} ansible_ssh_user=devops ansible_ssh_pass=blabla
.......so on...
The thing is that I need to pass a different variable for each host.
I know of the flag -e that allows me to send a variable with the ansible-playbook command but it's not for each of the hosts.
I'm running the playbook with this:
ansible-playbook -vvvv site.yml
How can I pass a different var for each host?
Thanks!
Note: I'm using ansible 1.7.1
Two ways you should be able to do this:
1) Include the variable in your host file:
[consul]
${HOST1} ansible_ssh_host=${HOST1} .... myvar=x
${HOST2} ansible_ssh_host=${HOST2} .... myvar=y
2) Or use the include_vars task to load a file based on the host name
include_vars: "{{ ansible_ssh_host }}.yml"
The second method is good if you have a lot of variables to load for a host.
For more complex cases the lookups module might help:
http://docs.ansible.com/ansible/playbooks_lookups.html