Ansible Generate Ssh Key For Root

Posted By admin On 13.12.20

Ansible Ssh Keygen
Ansible Add Ssh Key To Root
Ansible Generate Ssh Key For Root Canal

Creating an SSH Key Pair for User Authentication. The simplest way to generate a key pair is to run ssh-keygen without arguments. In this case, it will prompt for the file in which to store keys. Here's an example: klar (11:39) ssh-keygen Generating public/private rsa key pair.
Oct 09, 2019 Ansible - Creating users and copying ssh keypair files to the remote server - main.yml. Authkey: ssh-rsa blahblahblah ansible-generated on default: keyfiles: keyfiles/plonebuildout: In your playbook root folder, create a folder `keyfiles`. In it, create.

May 23, 2018 ansible-playbook deploy-ssh.yml -ask-pass. Type your root password, and you will get the result as below. All tasks for deploying a new user and ssh key have been completed successfully. Step 6 - Testing. Test using ansible command. Ansible webserver -m ping ansible webserver -m shell -a id. Now you will get the green messages as below.

This module allows one to (re)generate OpenSSH private and public keys. It uses ssh-keygen to generate keys. One can generate rsa, dsa, rsa1, ed25519 or ecdsa private keys.

The below requirements are needed on the host that executes this module.

ssh-keygen

Parameter	Choices/Defaults	Comments
attributes string	The attributes the resulting file or directory should have. To get supported flags look at the man page for chattr on the target system. This string should contain the attributes in the same order as the one displayed by lsattr. The `=` operator is assumed as default, otherwise `+` or `-` operators need to be included in the string.
comment added in 2.9	Provides a new comment to the public key. When checking if the key is in the correct state this will be ignored.
force boolean	Choices: yes	Should the key be regenerated even if it already exists
group string	Name of the group that should own the file/directory, as would be fed to chown.
mode string	The permissions the resulting file or directory should have. For those used to /usr/bin/chmod remember that modes are actually octal numbers. You must either add a leading zero so that Ansible's YAML parser knows it is an octal number (like `0644` or `01777`) or quote it (like `'644'` or `'1777'`) so Ansible receives a string and can do its own conversion from string into number. Giving Ansible a number without following one of these rules will end up with a decimal number which will have unexpected results. As of Ansible 1.8, the mode may be specified as a symbolic mode (for example, `u+rwx` or `u=rw,g=r,o=r`). As of Ansible 2.6, the mode may also be the special string `preserve`. When set to `preserve` the file will be given the same permissions as the source file.
owner string	Name of the user that should own the file/directory, as would be fed to chown.
path path / required	Name of the files containing the public and private key. The file containing the public key will have the extension `.pub`.
selevel string	Default:	The level part of the SELinux file context. This is the MLS/MCS attribute, sometimes known as the `range`. When set to `_default`, it will use the `level` portion of the policy if available.
serole string	When set to `_default`, it will use the `role` portion of the policy if available.
setype string	When set to `_default`, it will use the `type` portion of the policy if available.
seuser string	By default it uses the `system` policy, where applicable. When set to `_default`, it will use the `user` portion of the policy if available.
size integer	Specifies the number of bits in the private key to create. For RSA keys, the minimum size is 1024 bits and the default is 4096 bits. Generally, 2048 bits is considered sufficient. DSA keys must be exactly 1024 bits as specified by FIPS 186-2. For ECDSA keys, size determines the key length by selecting from one of three elliptic curve sizes: 256, 384 or 521 bits. Attempting to use bit lengths other than these three values for ECDSA keys will cause this module to fail. Ed25519 keys have a fixed length and the size will be ignored.
state string	Choices: absent	Whether the private and public keys should exist or not, taking action if the state is different from what is stated.
type string	Choices: dsa rsa1 ecdsa ed25519	The algorithm used to generate the SSH private key. `rsa1` is for protocol version 1. `rsa1` is deprecated and may not be supported by every version of ssh-keygen.
unsafe_writes boolean	Choices: yes	Influence when to use atomic operation to prevent data corruption or inconsistent reads from the target file. By default this module uses atomic operations to prevent data corruption or inconsistent reads from the target files, but sometimes systems are configured or just broken in ways that prevent this. One example is docker mounted files, which cannot be updated atomically from inside the container and can only be written in an unsafe manner. This option allows Ansible to fall back to unsafe methods of updating files when atomic operations fail (however, it doesn't force Ansible to perform unsafe writes). IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption.

Common return values are documented here, the following are the fields unique to this module:

Key	Returned	Description
comment string	changed or success	Sample:
filename	changed or success	Path to the generated SSH private key file /tmp/id_ssh_rsa
fingerprint string	changed or success	Sample: SHA256:r4YCZxihVjedH2OlfjVGI6Y5xAYtdCwk8VxKyzVyYfM
public_key string	changed or success	Sample: ssh-rsa AAAAB3Nza(..omitted..)veL4E3Xcw test_key
size integer	changed or success	Sample:
type	changed or success	Algorithm used to generate the SSH private key rsa

This module is not guaranteed to have a backwards compatible interface. [preview]
This module is maintained by the Ansible Community. [community]

Authors¶

David Kainz (@lolcube)

Hint

If you notice any issues in this documentation, you can edit this document to improve it.

I need to run a Linux command over 20 servers using a root user and password in Ansible too. How do I pass a user and password in Ansible over ssh based session? How can I set a default Ansible username/password for ssh connection?
There are two ways to solve this problem.

Method #1: Force username and password while using ssh

The syntax is:
export ANSIBLE_HOST_KEY_CHECKING=false ansible --user {user} --ask-pass -i {inventory} {hostname} -a 'command' -c paramiko ansible --user root --ask-pass -i ~/myhosts www1 -a 'uptime' -c paramiko ansible --user root --ask-pass -i ~/myhosts cluster -a '/bin/date' -c paramiko
First create an inventory file using cat command:
$ cat inventory [cluster] ln.cbz01 ln.cbz01 ln.cbz01 ln.cbz01
For example, run date command on all hosts in cluster with root user and prompt for root user password, run:
$ export ANSIBLE_HOST_KEY_CHECKING=false $ ansible --user root --ask-pass -i inventory cluster -a '/bin/date' -c paramiko
Sample outputs:
Where,

Ansible Ssh Keygen

export ANSIBLE_HOST_KEY_CHECKING=false : Host key checking enabled by default and it can be disabled with this option. Otherwise you may get an error that read as ‘The authenticity of host ‘ln.cbz01’ can’t be established.‘
--user root :Connect as root user for ssh.
--ask-pass : Ask for connection password for ssh.
-i inventory : Set inventory file name.
cluster : Set host names or variable
-a '/bin/date' : Run /bin/date command all given hosts
-c paramiko : Use paramiko module for ssh connection.

Please note that SSH keys are recommended but password authentication can be used as explained earlier. See method #2 below for more info on how to setup ssh keys for login.

A note about setting up the connection type and user on a per host basis in inventory file

Ansible Add Ssh Key To Root

The syntax is:
$ cat inventory [cluster] ln.cbz01 ansible_connection=ssh ansible_user=vivek ln.cbz01 ansible_connection=ssh ansible_user=root ln.cbz01 ansible_connection=ssh ansible_user=root ############### WARNING ################# ## never do the following i.e. never store ## the root account ssh password to use in ## a text file ########################################## ln.cbz01 ansible_connection=ssh ansible_user=root ansible_ssh_pass=foo

Method #2: Set and use ssh keys (recommended)

Ansible Generate Ssh Key For Root Canal

Create ssh keys if not created, run:
## [ Set password for your keys ] ## $ ssh-keygen -t rsa ## [ Copy pub key to all remote boxes ] ## $ ssh-copy-id -i $HOME/.ssh/id_rsa.pub root@ln.cbz01 $ ssh-copy-id -i $HOME/.ssh/id_rsa.pub root@ln.cbz02 $ ssh-copy-id -i $HOME/.ssh/id_rsa.pub root@ln.cbz03 $ ssh-copy-id -i $HOME/.ssh/id_rsa.pub root@ln.cbz04 ## [ Test it ] ## $ ssh root@ln.cbz01 ## [ Set up SSH agent to avoid retyping passwords ] ## $ ssh-agent bash $ ssh-add ~/.ssh/id_rsa ## [ Run ansible ] ## $ ansible all -m ping $ ansible -i inventory cluster -a '/bin/date'

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