naviat

###################################################
##
## Alertmanager YAML configuration for routing.
##
## Will route alerts with a code_owner label to the slack-code-owners receiver 
## configured above, but will continue processing them to send to both a
## central Slack channel (slack-monitoring) and PagerDuty receivers
## (pd-warning and pd-critical)
##

naviat

.......some config.....
alertmanager:

  ## Deploy alertmanager
  ##
  enabled: true

  ## Service account for Alertmanager to use.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/
  ##

naviat

Using Vagrant with Multi-Node MicroK8S to experiment with Kubernetes

This script (using Vagrant) is used to build a pair of Ubuntu based virtual machines that have the MicroK8S setup of Kubernetes.

It also installs docker, and sets up aliases for kubectl in line with the MicroK8S documentation.

Please note that this script relies on the fact that Vagrant transfers files in /vagrant to the host file system, which we can then use to setup the second node.

naviat

Using Vagrant with MicroK8S to experiment with Kubernetes

This Virtual Machine (using Vagrant) to build an Ubuntu based virtual machine that has the MicroK8S setup of Kubernetes.

It also installs docker, and sets up aliases for kubectl in line with the MicroK8S documentation.

Initially this should be functionally similar to MiniKube.

If you want a multi-node similar environment, here's a similar repository.

naviat

#!/usr/bin/env python
import argparse
import redis


def connect_redis(conn_dict):
    conn = redis.StrictRedis(host=conn_dict['host'],
                             port=conn_dict['port'],
                             db=conn_dict['db'])
    return conn

naviat

/*
  Migrate documents from one elasticsearch endpoint to another.

  To squeeze out extra performance, disable index refresh and replicas on the target cluster:

  curl -XPUT 'http://elasticsearch:9200/_settings' -d '{
    "index" : {
        "refresh_interval" : "-1",
        "number_of_replicas": "0"
    }

naviat

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

naviat

# Quick script to configure routes for a VPC peering connection
# Searches a region for all peering connection and prompts to choose one
# Configures routes between the peered networks for all routing tables
# STS/AssumeRole not implemented cross-account peering. Instead, 
# Choose accepter/requestor depending on which credentials are set in the environment
# Enter either IPv4 and IPv6 route destinations
# Example usage:
#  ( Assuming boto credentials are configured)
#   $ pip install boto3
#   $ python3.6 peer_routes.py

naviat

# eks.yml
on:
  pull_request:
  push:
    branches:         # array of glob patterns matching against refs/heads. Optional; defaults to all
    - master          # triggers on pushes that contain changes in master

name: Build and Deploy to EKS

env:

naviat

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "iam:CreateInstanceProfile",
                "iam:DeleteInstanceProfile",
                "iam:GetRole",
                "iam:GetInstanceProfile",