Fail2ban will run automatically after it is installed and is configured well-enough for our purposes by default. Most, if not all distributions of Linux have this version or greater installed by default. A server can exist in multiple groups without issue. There are a lot of capabilities in this module but, in this case, we are just going to ensure that the deploy account is added to the sudoers list on the server. In this case, we are ensuring the user exists and we are setting the password with the required variable. I work with a team of network engineers that are scared of linux, and I am trying to create a seamless user experience for my team.
Test Ansible Connection Now, we are going to test connectivity to your server. It lets you add, remove, or update a specific line in a file. We can log in to the remote server as user root using ssh keys. The - hosts: line indicates which host groups the playbook should evaluate. And I hope it illustrates the power of using a configuration management tool like Ansible to make this process easy to apply, repeatable and fast. If you are interested in learning more, is a great place to start. Your mileage may vary and I encourage you to tweak things to fit your own requirements.
The variable containing encrypted password will be de-crypted with vault. Making users in Linux isn't necessarily as simple as making a username, and giving it a password. Using an Inventory File Ansible uses an to decide what servers to operate against. So this post continues the tradition and automates the process using an Ansible playbook. It tries to use sudo but fails because sudo needs a password.
Generating Password Strings The one thing I left off here is how to make a valid password string. The way Ansible creates a user is more like useradd than the easier adduser. I am having difficulty understanding why said playbook, which is supposed to run on all servers that are members of a group, executes only on a single server in the group: --forks X runs on X servers at a time. Groups Users have a primary group, which is usually the same name as their username. Hence it is strongly recommended that you use the visudo command that will validate the syntax of the file before you save it. However, this introduces another issue.
Configure a firewall Now we are going to use the to create some firewall rules. Instead you need to generate one! Ansible Vault is the answer to this. So, we end up running debconf-set-selections with the question, value and vtype defined in each item. I added the ansible user to my. For information about the arguments accepted for the individual modules, see the documentation for that module. The playbook supports that by allowing you to configure a list of optional packages to install.
This is an interesting task as we are leveraging two powerful features in Ansible: and. For information about the arguments accepted for the individual modules, see the individual module documentation. First, some Linux distributions have the adduser command, wihch is a shortcut with sensible defaults to the useradd command. This task also uses the clever feature of Ansible. We will configure this later in the playbook.
Here is how we can use as a configuration manager, to manage the servers. There are a variety of ways you can specify your inventory but for this example, we are just going to pass in the path to a basic inventory file into the Ansible command. How do they expect us to diagnose issues with no error information from the server? This can consume a significant amount of time if you have a large number of hosts. Use a Vault File Another handy thing you can do is store a vault password in a file and use that. A basic Ansible function is the ability to run ad hoc commands.
Knowing these will make creating new users in Ansible easier. The recap shows it worked on all your servers. Do you want to sharpen your system administration or Linux skills? Further, it should ask for all passwords up front, rather than when it gets to the particular play, and only ask for the password for each user once. Provide details and share your research! The list functionality is new in 2. The provider parameter enables you to define the connection and authentication parameters for a number of devices in one place and easily pass those values to a module.
The server was reachable for each of the tasks. Lockdown ssh access We are approaching the end now. Prior to joining Red Hat, he spent several years in financial, automotive, and movie industries. Later in the playbook, we will configure it to send a daily email summary of activity on your server. This is really about asking about it per user in a play, which we can do because each play uses it's own Runner instances.
If you do not explicitly define the module arguments, the modules use the defaults defined in. Key management is an issue whenever access to servers must be controlled. The private key stays locked up in my home directory. How do you have your vault file structured? Is there a way to not have the playbook use the password for the second task? Truncated output for the ping command can be seen in Example 3. However, users can be assigned one or more secondary groups.