how to make ansible get access to an sshd container? - docker

Question

I use an ansible script to load & start the https://hub.docker.com/r/rastasheep/ubuntu-sshd/ container.
so it starts well of course :
bash-4.4$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8bedbd3b7d88 rastasheep/ubuntu-sshd "/usr/sbin/sshd -D" 37 minutes ago Up 36 minutes 0.0.0.0:49154->22/tcp test
bash-4.4$
so after ansible failure on ssh access to it I tested manually from shell
this is also ok.
bash-4.4$ ssh root#172.17.0.2
The authenticity of host '172.17.0.2 (172.17.0.2)' can't be established.
ECDSA key fingerprint is SHA256:YtTfuoRRR5qStSVA5UuznGamA/dvf+djbIT6Y48IYD0.
ECDSA key fingerprint is MD5:43:3f:41:e9:89:45:06:6f:f6:42:c4:6a:70:37:f8:1d.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.17.0.2' (ECDSA) to the list of known hosts.
root#172.17.0.2's password:
root#8bedbd3b7d88:~# logout
Connection to 172.17.0.2 closed.
bash-4.4$
so the step that failed is trying to get on it from ansible script & make access to ssh-copy-id
ansible error message is :
Fatal: [172.17.0.2]: UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: Warning: Permanently added '172.17.0.2' (ECDSA) to the list of known hosts.\r\nPermission denied (publickey,password).\r\n", "unreachable": true}
---
- hosts: 127.0.0.1
tasks:
- name: start docker service
service:
name: docker
state: started
- name: load and start the container we wanna use
docker_container:
name: test
image: rastasheep/ubuntu-sshd
state: started
ports:
- "49154:22"
- name: Wait maximum of 300 seconds for ports to be available
wait_for:
host: 0.0.0.0
port: 49154
state: started
- hosts: 172.17.0.2
vars:
passwordadmin: $6$pbE6yznA$AeFIdI.....K0
passwordroot: $6$TMrxQUxT$I8.JIzR.....TV1
ansible_ssh_extra_args: "-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
tasks:
- name: Build test container root user rsa ssh-key
shell: docker exec test ssh-keygen -b 2048 -t rsa -f /root/.ssh/id_rsa -q -N ""
so I cannot even run the needed step to build ssh
how to do then ??
1st step (ansible task) : load docker container
2cd step (ansible task on only 172.17.0.2) : connect to it & setup it
there will be 3rd step to run application on it after that.
the problem occurs only when starting the 2cd step

Answer 1

Ok after many trys on a second container
conclusion is my procedure was bad
what I have done to solve that :
build a diroctory tree separating ./ ./inventory ./includes
build 1 yaml file by host (local, docker, labo)
build 1 main yaml file on ./
build 1 new host file in ./inventory
connect forced by sshpass to docker on default password
changed it
add the host key on authorized key to a login dedicated usage
installed pyhton (needed to answer ansible host else it makes
randomly module errors or refused connections depending on current
action)
setup a ssh login user in sudoers
then I can un the docker.yaml actions
then only at last I can run the labo.yaml actions.
Thanks for help
now I'm able to build the missing tools.