Ansible ping not giving an output

[Eoghan O'Hara]

Hi,

I am learning to use Ansible, and am at the stage of pinging a remote host, an AWS EC2 instance in this case.

However, when I run ansible ping I get no output, as below:

$ ssh ec2-user@ec2-DNS

This system is not registered to Red Hat Insights. See https://cloud.redhat.com/

To register this system, run: insights-client --register

Last login: Fri Sep 11 15:10:27 2020 from **.**.**.**

[ec2-user@ip-bla ~]$ logout

Connection to ec2-DNS  closed.

$ ls

ansible.cfg  hosts

$ ansible -m ping all

$

Any ideas what I may be causing this? I have my ec2-DNS defined in my hosts file, and in ansible.cfg inventory is pointing at hosts in the current working directory. I also have remote_user = ec2-user in ansible.cfg

Thanks in advance,

Eoghan

[Eoghan O'Hara]

More information...

$ ansible --version

ansible 2.8.4

  config file = /home/eohara/ansible/ansible.cfg

  configured module search path = ['/home/eohara/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']

  ansible python module location = /usr/lib/python3.7/site-packages/ansible

  executable location = /usr/bin/ansible

  python version = 3.7.7 (default, Apr 10 2020, 07:59:19) [GCC 9.3.0]

I do not have Python installed on my EC2 instance yet, but if this was the issue I would expect an error message of some kind

[Luca 'remix_tj' Lorenzetto]

Run ansible with more verbosity (-vvv) and then we should have enough informations.

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[Eoghan O'Hara]

Hi Luca,

Thank you for the response!

$ ansible -vvv -m ping all

ansible 2.8.4

  config file = /home/eohara/ansible/ansible.cfg

  configured module search path = ['/home/eohara/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']

  ansible python module location = /usr/lib/python3.7/site-packages/ansible

  executable location = /usr/bin/ansible

  python version = 3.7.7 (default, Apr 10 2020, 07:59:19) [GCC 9.3.0]

Using /home/eohara/ansible/ansible.cfg as config file

host_list declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

script declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

auto declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

Parsed /home/eohara/ansible/hosts inventory source with ini plugin

[Luca 'remix_tj' Lorenzetto]

Looks like you're having an issue with your inventory file, please check if file specified in -i parameter is a valid inventory file.

Luca

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[Eoghan O'Hara]

The file specified in -i is hosts in the current working directory

See below

$ head -15 ansible.cfg

# config file for ansible -- https://ansible.com/

# ===============================================

# nearly all parameters can be overridden in ansible-playbook

# or with command line flags. ansible will read ANSIBLE_CONFIG,

# ansible.cfg in the current working directory, .ansible.cfg in

# the home directory or /etc/ansible/ansible.cfg, whichever it

# finds first

[defaults]

# some basic default values...

inventory      = hosts

#library        = /usr/share/my_modules/

$ cat hosts

[example]

public.IP.of.EC2instance

$

I can not see anything wrong with this 

[Eoghan O'Hara]

Any other suggestions would be greatly appreciated

[Tej Singh Rana]

You need to add the ICMP option in the security groups.

To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/714878ee-e1a6-442a-8129-60502f25e238n%40googlegroups.com.

--

---------------------

Tej Singh Rana

[Eoghan O'Hara]

Hi Tej,

I have tried that on my inbound rules, to no avail.

As a test, I set inbound and outbound rules in my security group to accept all traffic on all protocols. Still, I am seeing the same output

[Tej Singh Rana]

Are you able to ping other ec2 instances without ansible?

What is the output of the below command:----

ansible localhost -m ping

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[Tej Singh Rana]

Try to define under the absolute path 

inventory = /home/eohara/ansible/hosts

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[Raju Das]

Hi Eoghan,

Are you able to run it explicitly using ( -i hosts)? And are u able to check --list-host? permission of the hosts file? password less auth has been configured?

WIth Regards

Raju Das

 

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[Tej Singh Rana]

Try with 

ansible all -m ping -i hosts

It will work.

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[Eoghan O'Hara]

I can ping the current ec2 instance and another one without ansible.

The output of that command is below

eohara@LPTP630 ~/ansible

$ ansible -vvv localhost -m ping

ansible 2.8.4

  config file = /home/eohara/ansible/ansible.cfg

  configured module search path = ['/home/eohara/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']

  ansible python module location = /usr/lib/python3.7/site-packages/ansible

  executable location = /usr/bin/ansible

  python version = 3.7.7 (default, Apr 10 2020, 07:59:19) [GCC 9.3.0]

Using /home/eohara/ansible/ansible.cfg as config file

host_list declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

script declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

auto declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

Parsed /home/eohara/ansible/hosts inventory source with ini plugin

eohara@LPTP630 ~/ansible

$

[Eoghan O'Hara]

Tried this, no change

[Eoghan O'Hara]

Hi,

It does not work with -i hosts

eohara@LPTP630 ~/ansible

$ ansible all --list-hosts

  hosts (1):

    ec2-18-132-46-235.eu-west-2.compute.amazonaws.com

eohara@LPTP630 ~/ansible

$

eohara@LPTP630 ~/ansible

$ ls -lart

total 25

-rw-r--r--  1 eohara FD+Group(513)    50 Sep 14 10:46 hosts

-rw-r--r--  1 eohara FD+Group(513) 19983 Sep 14 11:25 ansible.cfg

By password-less auth, you mean I have an ssh key added and I can ssh to the instance without entering a password? Then yes that is configured

[Eoghan O'Hara]

Unfortunately,  ansible all -m ping -i hosts  still gives the same result 

[Tej Singh Rana]

Any special purpose to define this ec2-18-132-46-235.eu-west-2.compute.amazonaws.com instead of IP of the ec2 instance ?

To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/66374470-2c5a-492a-915b-6802c7d40eban%40googlegroups.com.

[Dick Visser]

As stated on https://docs.ansible.com/ansible/latest/modules/ping_module.html,
it is NOT ICMP ping, this is just a trivial test module that requires
Python on the remote-node.
If ansible ping fails, this means that your SSH config/setup is wrong.
This needs to be fixed before you can do anything.
It is covered in the 'getting started' pages:
https://docs.ansible.com/ansible/latest/user_guide/intro_getting_started.html#getting-started

> To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/CADBoQTpf4nHm0vHRQGmyeH8ixdNeXfdeCrSV0M-Q0cDHNJp10w%40mail.gmail.com.



--
Dick Visser
Trust & Identity Service Operations Manager
GÉANT

[Eoghan O'Hara]

Hi Tej,

No special purpose. I changed to IP now, no change

[Raju Das]

Hi ,

ansible -i hosts --private-key=urspemfile.pem -u username -m ping

Please check

With Regards

Raju Das

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[Eoghan O'Hara]

Hi Dick,

Thanks, I'll look through this again

Eoghan O'Hara | Data Scientist | Kx | +353 858398926 | eoh...@kx.com | Pronounced "own"

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[Eoghan O'Hara]

Hi Raju,

eohara@LPTP630 ~/ansible
$ ansible -vvv -i hosts exampleUBUNTU --private-key ~/.ssh/keypairfile.pem -u ubuntu -m ping

ansible 2.8.4
  config file = /home/eohara/ansible/ansible.cfg
  configured module search path = ['/home/eohara/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.7.7 (default, Apr 10 2020, 07:59:19) [GCC 9.3.0]
Using /home/eohara/ansible/ansible.cfg as config file
host_list declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method
script declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method
auto declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method
Parsed /home/eohara/ansible/hosts inventory source with ini plugin

eohara@LPTP630 ~/ansible
$

Eoghan O'Hara | Data Scientist | Kx | +353 858398926 | eoh...@kx.com | Pronounced "own"

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[Raju Das]

use this 

ansible  -i hosts --private-key=/home/eohara/.ssh/keypairfile.pem -u ubuntu -m ping

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[Eoghan O'Hara]

eohara@LPTP630 ~/ansible

$ ansible -vvv -i hosts --private-key=/home/eohara/.ssh/keypairfile.pem -u ubuntu -m ping

Usage: ansible <host-pattern> [options]

Define and run a single task 'playbook' against a set of hosts

Options:

  -a MODULE_ARGS, --args=MODULE_ARGS

                        module arguments

  --ask-vault-pass      ask for vault password

  -B SECONDS, --background=SECONDS

                        run asynchronously, failing after X seconds

                        (default=N/A)

  -C, --check           don't make any changes; instead, try to predict some

                        of the changes that may occur

  -D, --diff            when changing (small) files and templates, show the

                        differences in those files; works great with --check

  -e EXTRA_VARS, --extra-vars=EXTRA_VARS

                        set additional variables as key=value or YAML/JSON, if

                        filename prepend with @

  -f FORKS, --forks=FORKS

                        specify number of parallel processes to use

                        (default=5)

  -h, --help            show this help message and exit

  -i INVENTORY, --inventory=INVENTORY, --inventory-file=INVENTORY

                        specify inventory host path or comma separated host

                        list. --inventory-file is deprecated

  -l SUBSET, --limit=SUBSET

                        further limit selected hosts to an additional pattern

  --list-hosts          outputs a list of matching hosts; does not execute

                        anything else

  -m MODULE_NAME, --module-name=MODULE_NAME

                        module name to execute (default=command)

  -M MODULE_PATH, --module-path=MODULE_PATH

                        prepend colon-separated path(s) to module library (def

                        ault=~/.ansible/plugins/modules:/usr/share/ansible/plu

                        gins/modules)

  -o, --one-line        condense output

  --playbook-dir=BASEDIR

                        Since this tool does not use playbooks, use this as a

                        substitute playbook directory.This sets the relative

                        path for many features including roles/ group_vars/

                        etc.

  -P POLL_INTERVAL, --poll=POLL_INTERVAL

                        set the poll interval if using -B (default=15)

  --syntax-check        perform a syntax check on the playbook, but do not

                        execute it

  -t TREE, --tree=TREE  log output to this directory

  --vault-id=VAULT_IDS  the vault identity to use

  --vault-password-file=VAULT_PASSWORD_FILES

                        vault password file

  -v, --verbose         verbose mode (-vvv for more, -vvvv to enable

                        connection debugging)

  --version             show program's version number, config file location,

                        configured module search path, module location,

                        executable location and exit

  Privilege Escalation Options:

    control how and which user you become as on target hosts

    -b, --become        run operations with become (does not imply password

                        prompting)

    --become-method=BECOME_METHOD

                        privilege escalation method to use (default=sudo), use

                        `ansible-doc -t become -l` to list valid choices.

    --become-user=BECOME_USER

                        run operations as this user (default=root)

    -K, --ask-become-pass

                        ask for privilege escalation password

  Connection Options:

    control as whom and how to connect to hosts

    -k, --ask-pass      ask for connection password

    --private-key=PRIVATE_KEY_FILE, --key-file=PRIVATE_KEY_FILE

                        use this file to authenticate the connection

    -u REMOTE_USER, --user=REMOTE_USER

                        connect as this user (default=None)

    -c CONNECTION, --connection=CONNECTION

                        connection type to use (default=smart)

    -T TIMEOUT, --timeout=TIMEOUT

                        override the connection timeout in seconds

                        (default=10)

    --ssh-common-args=SSH_COMMON_ARGS

                        specify common arguments to pass to sftp/scp/ssh (e.g.

                        ProxyCommand)

    --sftp-extra-args=SFTP_EXTRA_ARGS

                        specify extra arguments to pass to sftp only (e.g. -f,

                        -l)

    --scp-extra-args=SCP_EXTRA_ARGS

                        specify extra arguments to pass to scp only (e.g. -l)

    --ssh-extra-args=SSH_EXTRA_ARGS

                        specify extra arguments to pass to ssh only (e.g. -R)

Some modules do not make sense in Ad-Hoc (include, meta, etc)

ERROR! Missing target hosts

eohara@LPTP630 ~/ansible

$ ansible -vvv -i hosts all --private-key=/home/eohara/.ssh/keypairfile.pem -u ubuntu -m ping

ansible 2.8.4

  config file = /home/eohara/ansible/ansible.cfg

  configured module search path = ['/home/eohara/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']

  ansible python module location = /usr/lib/python3.7/site-packages/ansible

  executable location = /usr/bin/ansible

  python version = 3.7.7 (default, Apr 10 2020, 07:59:19) [GCC 9.3.0]

Using /home/eohara/ansible/ansible.cfg as config file

host_list declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

script declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

auto declined parsing /home/eohara/ansible/hosts as it did not pass it's verify_file() method

Parsed /home/eohara/ansible/hosts inventory source with ini plugin

eohara@LPTP630 ~/ansible

$

[Raju Das]

See i think you have ssh config problem. either you have to do passwordless or using private keyfile(update inventory)

[server]
Pub_Private_IP ansible_user=username ansible_ssh_private_key_file=key.pem

With Regards

Raju Das

[Raju Das]

Hi Eoghan,

You can also check if it is plugin issue. As it is showing "Parsed /home/eohara/ansible/hosts inventory source with ini plugin"

Adding to ansible.cfg.

[inventory]
enable_plugins = host_list, script, auto, yaml, ini, toml

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[Eoghan O'Hara]

Hi Raju,

I tried that as well.

I am now investigating my ssh configuration.

Thank you all for the help!

Eoghan

Eoghan O'Hara | Data Scientist | Kx | +353 858398926 | eoh...@kx.com | Pronounced "own"

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[Tej Singh Rana]

Please let us know what is the actual cause.

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[Eoghan O'Hara]

Hi all,

Still investigating this issue. Does anyone have any experience of correcting such an ssh issue?

Dick, I looked at your second link. It doesn't have any tips on how to fix an issue unfortunately.

Thanks everyone,

Eoghan

Eoghan O'Hara | Data Scientist | Kx | +353 858398926 | eoh...@kx.com | Pronounced "own"

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