Ansible: inventory and configuration tips
Ansible can execute commands in Linux hosts using ssh, powershell in Windows hosts and just plain bash commands when interacting with the…
cat ansible-inventory-and-configuration-tips.md →$ ls -lh ./posts
// also on this box: ./practice, ./tools and ./games
Ansible: ad-hoc commands
Ansible is not usefull only to run large complicated playbooks, its also usefull when you want to run simple commands on group of servers.
cat ansible-ad-hoc-commands.md →How to start with ansible
In this article i will show you how to install and configure ansible and how to run a basic playbook.
cat how-to-start-with-ansible.md →How to check if a port is open and you dont have telnet or nc installed
In some environments you might not be able to install telnet or nc to verify if a port is open, but still using standard linux commands…
cat how-to-check-if-a-port-is-open-and-you-dont-have-telnet-or-nc-installed.md →Docker swarm: overlay network encryption and MTLS
To encrypt application data, add --opt encrypted when creating the overlay network. This enables IPSEC encryption at the level of the…
cat docker-swarm-overlay-network-encryption-and-mtls.md →Docker content trust: how it works
Docket content trust is a security mechanism that allows only images with a specific sign to run to our docker environment. This ensures…
cat docker-content-trust-how-it-works.md →Docker networking explained
Docker utilizes n architecture called Container Network Model (CNM) to manage container networking.
cat docker-networking-explained.md →
rsync examples: how to resume your interrupted copy and how to copy over a third host
How to copy a file/directory from a host to another who can communicate only by a 3rd host (Jump Host)
cat rsync-examples-how-to-resume-your-interrupted-copy-and-how-to-copy-over-a-third-host.md →Docker swarm and remote filesystems, an ssh fs example
Scenario: we have a swarm of 3 servers and a 4th server which will be our storage, a directory on this host that will be mounted over ssh
cat docker-swarm-and-remote-filesystems-an-ssh-fs-example.md →Docker: see images size and how to clean-up
Docker images takes space in filesystem, lets do a test to get a better understanding, create the following Dockerfile
cat docker-see-images-size-and-how-to-clean-up.md →