Skip to main content

Randomly Generating User Passwords Using Ansible

First, i would like to note that i have recently started using Ansible for configuration management. One of the things i need in my server environment is to implement a user password changing policy. Since the targets are numerous, i have to use randomly generated passwords for each host. Because passwords are sensitive, they should be generated in the encrypted form. Ansible documentation recommends using python passlib library and SHA512 hashing here.

With the following function passwords can be randomly generated in the form of strings that are 8 characters long and contain uppercase ascii characters, lowercase ascii characters and digits.

My aim is to create one playbook template for each host from the ansible hosts. On my own way getting ansible hosts can be achieved like this:

# ansible all -m ping |grep success |awk '{print $1}' |sort > server_list

And playbook templates can be created reading server_list file line by line (take note the randomly generated passwords):
That's it. Playbook templates can be run one by one:

# ansible-playbook <target_host>.yml

Or in a for loop:

# for yaml in $(ls *.yml); do ansible-playbook $yaml; done


Popular posts from this blog

Creating Multiple VLANs over Bonding Interfaces with Proper Routing on a Centos Linux Host

In this post, I am going to explain configuring multiple VLANs on a bond interface. First and foremost, I would like to describe the environment and give details of the infrastructure. The server has 4 Ethernet links to a layer 3 switch with names: enp3s0f0, enp3s0f1, enp4s0f0, enp4s0f1 There are two bond interfaces both configured as active-backup bond0, bond1 enp4s0f0 and enp4s0f1 interfaces are bonded as bond0. Bond0 is for making ssh connections and management only so corresponding switch ports are not configured in trunk mode. enp3s0f0 and enp3s0f1 interfaces are bonded as bond1. Bond1 is for data and corresponding switch ports are configured in trunk mode. Bond0 is the default gateway for the server and has IP address Bond1 has three subinterfaces with VLAN 4, 36, 41. IP addresses are,, respectively. Proper communication with other servers on the network we should use routing tables. There are three

PowerShell Script for Switching Between Multiple Windows

Windows PowerShell has strong capabilities. I have a separate computer with a big lcd screen in which I am watching regularly some web based monitoring applications. So I need those application windows switch between on a timely basis. Then I wrote this simple powershell script to achieve this. You can change it according to your needs.