Kubernetes Deployment with Terraform
Terraform is a very powerfull tool for creating compute, network, storage ressource on every public cloud provider. It have a declarative language, so what you write is what you get. For example if you remove a compte server from your terraform config file, the next time you apply your configuration, the server will be destroyed.…
Ansible AWX in Kubernetes
AWX Since one year now, Red Hat open sourced Tower as AWX, the Web UI to deploy with Ansible. Awx allow you to manage all your Ansible projects, with inventories, encrypted credentials, playbooks, etc, in a great Web UI. For example, you can create in AWX multiple credentials which are encrypted into Awx database to…
How to migrate from ansible vault to hashicorp vault
Ansible Vault Today, all our project passwords are stored in ansible vault files, on file per environnement, stored in a « passwords » directory They are loaded at the beginning of the main playbook : — – hosts: all:!localhost any_errors_fatal: true gather_facts: true pre_tasks: – include_vars: password/password_{{ env }}.yml connection: local no_log: True tags: – password -…
Ansible Mitogen
Today I discovered a new ansible strategy module that increase ansible performance a lot : Ansible Mitogen. Mitogen is a python library for writing distributed self-replicating programs. You can read a great article about this here : https://sweetness.hmmz.org/2018-03-06-quadrupling-ansible-performance-with-mitogen.html After some benchmark, I confirm : Mitogen is very fast ! I’ve divised my deployment by 2…
Prometheus : Monitor docker services with grafana
Here is a little tutorial to setup Prometheus monitoring for a local docker daemon and host metrics with docker-compose and : prometheus node exporter for system metrics cadvisor for docker metrics First create a prometheus.yml config file like this : global: alerting: alertmanagers: – static_configs: – targets: # – alertmanager:9093 rule_files: # – « first_rules.yml » #…
Ansible 2.5 grafana modules
At work, we needed to automatize grafana installation and grafana provisionning (datasources, plugins and dashboards). So I’ve created 3 new ansible modules that will be released with the next version of ansible 2.5 The first module is grafana_datasource. If you have to create a lot of different datsources for your grafana instance in multiples…
Zabbix – Send alerts to Slack
Today I’ve configured my Zabbix Server to automatically send alerts to the #alerting channel of my slack team. To to this, you have to create un new Incoming WebHook in your slack Team. Click on your team, select App and Integration. Search for Incoming Webhook Click « Add a configuration » Configure the webhook with the default…
Wetty : un terminal dans ton navigateur
J’avais déjà fait un article sur GateOne, il y a un moment déjà. Mais celui-ci était plutôt lourd et difficile à installer. Et la dernièrement je suis tombé sur Wetty, une web app codée en NodeJS permettant d’avoir un terminal dans le navigateur ! Idéal pour pouvoir accéder à son serveur depuis le boulot quand…
Traefik : HTTP reverse proxy / Load balancer pour Docker
Lors de ma formation Docker par @emilevauge, il nous avait rapidement montré son outil de reverse proxy et load balancer écrit en Go pour Docker : Træfɪk La conf est super simple, il suffit de lui donner accès a l’API Docker (socket / port) ou n’importe quel autre Backend (Kubernetes, Etcd, consul, etc..) et traefik…
Alpine Linux : A Tiny Tiny Docker Image
Do you know Alpine Linux ? It’s a Tiny Linux distribution based on busybox. Every one working with docker now that it takes a lot of disk space. That’s why here at ERDF Lyon we are using Docker-Alpine to build our own services.. It is very cool to have a very small containers, for example…