I have complete access to ServerA (single server) [IP: 142.5.5.55] where I have my public key /app/serverA/mw.pub. This server has ansible from where i run my automation.
I have ssh passwordless connectivity to 3 servers [IP: 11.1.1.220, 11.1.1.221, 11.1.1.222] from ansible ServerA and we call these 3 servers as jump_nodes
Lastly, I have something called as target hosts [IP: 192.0.0.200, 192.0.0.201, 192.0.0.202] that we named dest_nodes where we wish to inject our public key mw.pub. Only the jump_nodes have connectivity to dest_nodes.
Thus:
ServerA(ansible) ---------------------> jump_nodes --------------------> dest_nodes
copy to ~/mw.pub inject ~/mw.pub
I'm able to copy my public key mw.pub to all jump_nodes under ~/mw.pub using the below playbook.
All good but below is what is failing:
I wish to now inject the ~/mw.pub from jump server to the target host i.e dest_nodes which ever has connectivity.
My playbook:
---
- name: "Play 1"
hosts: localhost
gather_facts: false
tags: always
tasks:
- name: Add host
debug:
msg: " hello "
- set_fact:
jump_server_list: "{{ JUMP_SERVER | trim }}"
- set_fact:
target_server_list: "{{ TARGET_SERVER | trim }}"
- add_host:
hostname: "{{ item }}"
groups: jump_nodes
with_items: "{{ jump_server_list.split('\n') }}"
- add_host:
hostname: "{{ item }}"
groups: dest_nodes
with_items: "{{ target_server_list.split('\n') }}"
- name: "Play 2"
hosts: dest_nodes
user: root
ignore_unreachable: yes
vars:
ansible_ssh_extra_args: -o StrictHostKeyChecking=no
ansible_ssh_private_key_file: /app/id_rsa
gather_facts: true
tasks:
- name: Copy ssh public key to a file on jump servers
raw: "echo {{ TARGET_KEY }}>~/mw.pub"
run_once: True
delegate_to: "{{ item }}"
with_items: "{{ groups['jump_nodes'] }}"
- name: Set authorized key taken from file
ignore_errors: yes
authorized_key:
user: "{{ TARGET_USER }}"
state: present
key: "{{ lookup('file', '~/mw.pub') }}"
register: keystatus
delegate_to: "{{ item }}"
with_items: "{{ groups['jump_nodes'] }}"
- debug:
msg: "CHECK STATUS {{ keystatus }}"
ignore_errors: yes
Output:
TASK [Copy ssh public key to a file on jump servers] *******************************************************************************************************************
task path: /app/injectkeys/injectsshkeys.yml:40
<11.1.1.220> ESTABLISH SSH CONNECTION FOR USER: root
<11.1.1.220> SSH: EXEC ssh -C -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/app/id_rsa"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o 'User="root"' -o ConnectTimeout=10 -o StrictHostKeyChecking=no -o ControlPath=/home/axmwapp/.ansible/cp/42c5d2e05f -tt 11.1.1.220 'echo ssh-rsa PPPPB3NzaC1yc2EPPPPDAQABAAABAQDQGeUOA0vJK1AXSp3UKK1KF4VnFzmcrCoM4Ha7jx49DGPkGuNgS4ZKYYGiAl7FDhwtysvUF6JSl1l3Gxrki3nLDmGYUHbzNCU0qghOw85gbr++W+b+VfEZEnzTE8VPjAgR/JvQItLd2F8PGGlZBwDUXOIvuw8Acqft0nErDkPkKApJcn302qHtOc9R1mFff/GuD6WL6gjPF0gZsEkxHq+FObdsuUzndon0SR3SPeoF/oKA2CVy15+ea6wZnAYqCCppbdgZYR9uSZlMnvwMGT2g3Au+kL2dls3aRYQm6ZH0IrOpfn8M+BaPCcpWppE64XSPZlkU+3mIe2riG4IyIE75 [email protected]>~/mw.pub'
<11.1.1.220> (0, '', 'Shared connection to 11.1.1.220 closed.\r\n')
changed: [192.0.0.200 -> 11.1.1.220] => (item=11.1.1.220) => {
"ansible_loop_var": "item",
"changed": true,
"item": "11.1.1.220",
"rc": 0,
"stderr": "Shared connection to 11.1.1.220 closed.\r\n",
"stderr_lines": [
"Shared connection to 11.1.1.220 closed."
],
"stdout": "",
"stdout_lines": []
}
TASK [Set authorized key taken from file] ******************************************************************************************************************************
task path: /app/injectkeys/injectsshkeys.yml:46
[WARNING]: Unable to find '~/mw.pub' in expected paths (use -vvvvv to see paths)
fatal: [192.0.0.200]: FAILED! => {
"msg": "An unhandled exception occurred while running the lookup plugin 'file'. Error was a <class 'ansible.errors.AnsibleError'>, original message: could not locate file in lookup: ~/mw.pub"
}
...ignoring
TASK [debug] ***********************************************************************************************************************************************************
task path: /app/injectkeys/injectsshkeys.yml:57
ok: [192.0.0.200] => {
"msg": "CHECK STATUS {'msg': u\"An unhandled exception occurred while running the lookup plugin 'file'. Error was a <class 'ansible.errors.AnsibleError'>, original message: could not locate file in lookup: ~/mw.pub\", 'failed': True}"
}
META: ran handlers
META: ran handlers
Below is how i run the playbook
ansible-playbook /app/injectkeys/injectsshkeys.yml -f 5 -e JUMP_SERVER='11.1.1.220' -e TARGET_SERVER='192.0.0.200' -e TARGET_USER='root' -e TARGET_KEY="'ssh-rsa PPPPB3NzaC1yc2EPPPPDAQABAAABAQDQGeUOA0vJK1AXSp3UKK1KF4VnFzmcrCoM4Ha7jx49DGPkGuNgS4ZKYYGiAl7FDhwtysvUF6JSl1l3Gxrki3nLDmGYUHbzNCU0qghOw85gbr++W+b+VfEZEnzTE8VPjAgR/JvQItLd2F8PGGlZBwDUXOIvuw8Acqft0nErDkPkKApJcn302qHtOc9R1mFff/GuD6WL6gjPF0gZsEkxHq+FObdsuUzndon0SR3SPeoF/oKA2CVy15+ea6wZnAYqCCppbdgZYR9uSZlMnvwMGT2g3Au+kL2dls3aRYQm6ZH0IrOpfn8M+BaPCcpWppE64XSPZlkU+3mIe2riG4IyIE75 [email protected]'" -vvv
As you can see from output it is looking for ~/mw.pub on the dest_nodes despite delegate_to: jump_nodes i.e it looks up for ~/mw.pub on dest_nodes 192.0.0.200 when it should have looked up on 11.1.1.220 where it is present and then injected it on 192.0.0.200.
Can you please suggest how can i fix this ?
From the documentation on lookup plugins
Like all templating, these plugins are evaluated on the Ansible control machine, not on the target/remote.
So it actually does not look on the target host but on the controller.
If you need to get a file from the target, you will have to use fetch prior to lookup the local copy or slurp the content into a variable.