K
Q

Ansible Error: "[Errno 2] No such file or directory"

1/14/2020

I'm not able to execute kubectl(v1.16.3) commands in the ansible command module.

For e.g. Creation of Namespace using ansible.

tasks:
   - name: "Creating Directory"
     file:
       path: ~/ansible\_ns/demo\_namespaces
       state: directory

   - name: "Creating Namespaces(1/2)"
     copy:
       content: "apiVersion: v1 \\nkind: Namespace \\nmetadata: \\n     name: {{item}} "
       dest: "~/ansible\_ns/demo\_namespaces/{{item}}.yml"
     with\_items:
       - "{{ namespace }}"

   - name: "Creating Namespaces(2/2)"
     command: "kubectl create -f {{item}}.yml --kubeconfig=/var/lib/kubernetes/kubeconfig.yaml"
     args:
       chdir: ~/ansible\_ns/demo\_namespaces/
     ignore\_errors: true
     with\_items:
       - "{{ namespace }}"

I'm ending up with the below error:

(item=ns) => { "ansible_loop_var": "item", "changed": false, "cmd": "kubectl create -f ns.yml --kubeconfig=/var/lib/kubernetes/kubeconfig.yaml", "invocation": { "module_args": { "_raw_params": "kubectl create -f ns.yml --kubeconfig=/var/lib/kubernetes/kubeconfig.yaml", "_uses_shell": false, "argv": null, "chdir": "/root/ansible_ns/demo_namespaces/", "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true } }, "item": "ns", "msg": "[Errno 2] No such file or directory", "rc": 2 }

NOTE: But I'm able to do "kubectl create -f .." manually..and it is creating the stuff.

My Ansible version:

$ ansible --version
ansible 2.9.2
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/mdupaguntla/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.5 (default, Aug  4 2017, 00:39:18) [GCC 4.8.5 20150623 (Red Hat 4.8.5-16)]

FYI, I also tried with Ansible - 2.4.2 as well. But No luck.

My System OS: CentOS 7

My queries:

  1. What is this error mean "[Errno 2] No such file or directory" in my context?

  2. I came to know that Ansible introduced kubectl & k8s module: Is there anyone in the community using these.. If Yes, please let me know how to use them. If they any prerequisites - please share them For kubectl Module: Came to know that the pre-requisite is kubectl go library.May I know where can I get this Library.

  3. when the kubectl version is 1.8 and ansible version is 2.4.2 - I'm able to get the K8s resources created using "kubectl create -f ..." using command module. But when I upgraded my cluster from v1.8 to v1.16.3 - I'm not able to create the resources using "kubectl create -f ..." using command module. Let me if I missed doing things.

Thanks in advance for the Community

-- manoj kumar
ansible
kubernetes

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3 Answers

1/14/2020

If you use ansible 2.9.2, it has k8s module available. It provides fully declarative approach ( versus issuing imperative commands ) which is more similar to what you can find in kubernetes itself.

For example if you want to create a new namespace, just use:

- name: Create a k8s namespace
  k8s:
    name: testing
    api_version: v1
    kind: Namespace
    state: present

You have to admit it looks much simpler.

-- mario
Source: StackOverflow
1/14/2020

Well, there are two ways to make this process better and functional.

You can try to use k8s module like this way.

- name: Create k8s catota namespace
  k8s:
    name: catota
    api_version: v1
    kind: Namespace
    state: present

Or you can use the shell module as well:

- name: Create k8s catota namespace
  shell: "kubectl create namespace catota"
  args:
    executable: /bin/bash
-- Daniel Marques
Source: StackOverflow
1/16/2020

You have to add the path for kubectl in the command module.

command: "/the/path/kubectl create -f {{item}}.yml .........."

This is because the $PATH is not updated with the path of kubectl. You can add the path to $PATH also instead of giving the path in command module.

-- Ash
Source: StackOverflow