jairojunior

---
- hosts: all
  become: yes
  become_user: jboss
  vars:
    jboss_home: /opt/jboss-eap-6.4
    patch_file: jboss-eap-6.4.9-patch.zip
    patch_dest: /tmp
    patch_version: 6.4.9

jairojunior

find pod's host

oc describe po pod-name

interface index

oc exec pod-name cat /sys/devices/virtual/net/eth0/iflink

find vethx by index

ip a

finally

jairojunior

---
- hosts: 127.0.0.1
  connection: local
  environment:
    JBOSS_MANAGEMENT_USER: ansible
    JBOSS_MANAGEMENT_PASSWORD: ansible
    JBOSS_MANAGEMENT_HOST: "10.255.0.10"
    JBOSS_MANAGEMENT_PORT: 9990
  tasks:
    - name: Configure datasource

jairojunior

def missing_hours(vm_id, day)
  day_hours=*(0..23)

  present_hours = MetricRollup.where(:resource_id => vm_id, :resource_type => 'VmOrTemplate', :capture_interval_name => 'hourly').where("date_trunc('day', timestamp) = '#{day}'").group("resource_id").group("timestamp").select("timestamp").order("timestamp").collect { |rollup| rollup.timestamp.hour }

  day_hours - present_hours
end

def generate_missing(vm_id, day)
  objs = []

jairojunior

Testing Ansible Roles with Molecule

Tests techniques play an important role in software development, and it's no different when we are talking about Infrastructure as Code (IaC).

While developing you are always testing and constant feedback is necessary to drive your development. If you're taking to long to get feedback on a change, your steps might be too large, making errors hard to spot. Baby steps and fast feedback are the essence of TDD (Test Driven Development), but how do I apply this to the development of ad-hoc playbooks or roles?

When you're developing an automation, a typical workflow would start with a new virtual machine. We will use Vagrant to illustrate this idea, but it could be libvirt, Docker, VirtualBox or VMware used directly in your machine and even an instance in a private or public cloud or a virtual machine provisioned in your data center hypervisor (oVirt, Xen, VMware).

NOTE: When deciding which one to use you'll have to balance feedback speed and similarity with you

jairojunior

---
- hosts: nodes
  tasks:

    - name: Fix bridge
      lineinfile:
        path: /etc/sysconfig/docker
        regexp: '^OPTIONS='
        line: "OPTIONS='--selinux-enabled --log-driver=journald --bip 10.17.0.1/16'"

jairojunior

#!/bin/sh
sed -i -e "/^#*[\\s]*Port\\s.*/s//Port 2222/" /etc/ssh/sshd_config
semanage port -a -t ssh_port_t -p tcp 2222
systemctl restart sshd

jairojunior

Automating Deployment Strategies with Ansible - Part I

Why Deployment?

When you describe your technology stack, from the bottom to the top layer: hardware, OS, middleware and application - with their respective configurations - it is easy to notice that as we go up in the stack, more frequent are the changes. Your hardware will hardly change, your operating system has a long life cycle and your middleware will keep up with applications needs, the element the most changes, even if your release cycle is long (weeks or months), applications will be the volatile.

In "The Practice of System and Network Administration", the authors categorize the biggest "time sinkholes" in IT as: manual/non-standard provisioning of Operating Systems and application deployments. These time sink holes will consume your time, with either repetitive tasks or unplanned work.

jairojunior

# extract private registry CA or cert to a crt file

---           
- hosts: all
  become: yes

  vars:
    private_registry_fqdn: registry.example.com

  tasks:

jairojunior

---
  AWSTemplateFormatVersion: "2010-09-09"

  Description: "Template for ECS VPC in two AZ's"
  Parameters:
    VPCName:
      Description: The name of the VPC being created.
      Type: String
      Default: "vpc-ecs (VPC For ECS with Public and Private Subnets with a NATGW)"
    VPCCIDR: