archmangler

Terraform: Using JSON with JQ to filter and extract output values
=================================================================

- Sometimes we need clean, elegant extraction of values from the terraform output to pass data to a next stage pipeline.
- JSON and JQ make this reliable, simple and fun!

```
gmonkey@tfvm:~/Ship/5ncn$ terraform output -json cluster_slave_private_addresses| jq .value
[
  "192.168.101.6",

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FROM openshift/origin

MAINTAINER SRE Team <sre@local>

ENV HOME=/home/jenkins

USER root
# Install headless Java
RUN yum install -y centos-release-scl-rh && \
    x86_EXTRA_RPMS=$(if [ "$(uname -m)" == "x86_64" ]; then echo -n java-1.8.0-openjdk-headless.i686 ; fi) && \

archmangler

Quick Notes on installation Options for Ubuntu
==============================================

1. Directly on Ubuntu

(Note: This one is entangled with the Oracle licensing nonsense. Lately they've threatened to stop free downloads of Java, so Caveat Emptor)


```

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Book Summary notes: Implementing Azure Cloud Design Patterns
============================================================

- Commentary
- Summary
- Errata notes


Chapter 1:
==========

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Review of possible options for deploying Hashicorp Vault
========================================================


1. VM based
2. Containerised
3. AWS
4. Azure
5. DC/OS
6. Kubernetes

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(The following call is repeated over > 15 mins)

```
2019-01-24T18:33:18.472Z [DEBUG] plugin.terraform-provider-azurerm_v1.21.0_x4: 2019/01/24 18:33:18 [TRACE] Waiting 30s before next try
module.securitycenter.azurerm_security_center_workspace.sc: Still modifying... (ID: redacted3, 14m40s elapsed)
module.securitycenter.azurerm_security_center_workspace.sc: Still modifying... (ID: redacted3, 14m50s elapsed)
module.securitycenter.azurerm_security_center_workspace.sc: Still modifying... (ID: redacted3, 15m0s elapsed)
2019-01-24T18:33:48.472Z [DEBUG] plugin.terraform-provider-azurerm_v1.21.0_x4: 2019/01/24 18:33:48 [DEBUG] AzureRM Request:
2019-01-24T18:33:48.472Z [DEBUG] plugin.terraform-provider-azurerm_v1.21.0_x4: GET /subscriptions/redacted/providers/Microsoft.Security/workspaceSettings/default?api-version=2017-08-01-preview HTTP/1.1
2019-01-24T18:33:48.472Z [DEBUG] plugin.terraform-provider-azurerm_v1.21.0_x4: Host: management.azure.com

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Kubernetes Journey

(gist: https://gist.github.com/ded15819fd881acd3133b2f9c5c3b795)

Test Mod

0. Plan: "Scan the Space: Go Wide then Go Deep"

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Checklist before making changes on important systems

Most of the catastrophes on I.T systems occur because of human error. Put succinctly "If it aint broke don't fix it". Here is a list of questions you can process every change you want to make on a given system through before you make that change. It was gathered from years of painful experience and, if followed will keep you on the right side of a performance review if your job is to keep critical, complex systems running (especially ones you've inherited and are not yet completely familiar with). The faster you get at accurately answering these questions in response to every requirement for a systems change, the better.

• do you understand the configuration itself?

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apiVersion: v1
items:
- apiVersion: v1
  kind: Pod
  metadata:
    creationTimestamp: "2019-11-15T07:55:25Z"
    generateName: kube-state-metrics-549767c89b-
    labels:
      app: kube-state-metrics
      pod-template-hash: 549767c89b

archmangler

Propositions:

• Some topics of learning require foundational pre-requisites in other subjects and are inaccessible without first learning in these areas.

Stack #1

• L3: [Linux Kernel Development]
• L2: [C Programming][x86-assembly][Operating Systems Design]