dejanu

version: '3.1'

services:

  db:
    image: mysql
    command: --default-authentication-plugin=mysql_native_password
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: example

dejanu

#!/bin/bash
## #####################################################################
## run concurrently command passed as argv on multiple remote servers ##
## UPDATE: servers array and user variable                            ##
########################################################################
# define an array of remote servers
servers=("server1.fqdn" "server2.fqdn" "server3.fqdn")
# Function to execute command on a remote server
execute_command() {
    server=$1

dejanu

# containers resource usage
docker stats [OPTIONS] [CONTAINER...]
docker stats --no-stream

# docker stats
docker system info

# check the container runtime
docker system info --format "{{ .DefaultRuntime }}"

dejanu

#!/usr/bin/env bash

#############################################################
# Purpose: wrapper for inspecting Requests/Limits for Pods ##
# @dejanualex                                              ##
#############################################################

# read namespace and po
echo -e "Available namespaces are:\n $(kubectl get ns -o=custom-columns=NAMESPACES:.metadata.name) \n"
echo -e "\n Please write the name of the namespace for which you want to know the resource status:\n"

dejanu

Metrics

• Information about Node:

# Gauge type metric

# CPU capacity <cores>
kube_node_status_capacity{resource="cpu"}

dejanu

#!/usr/bin/env bash

################################################################################################
# kubectl wrapper that generates a report concerning cluster state,                           ##
# which creates a dir with compiled information regarding:                                    ##
#  - control plane components status, cluster events, nodes description, and namespace events ##                        
################################################################################################

# Get nodes, componentsstatuses, and pods for control-plane
echo -e "\e[0;32m Cluster Nodes: \e[0m \n $(kubectl get nodes -owide)"

dejanu

# get available k8s versions for AKS, e.g. for location westeurope
az aks get-versions --location westeurope | jq ".orchestrators[] | .orchestratorVersion"

# get available versions for your AKS
az aks get-upgrades --resource-group <resourcegroup_name> --name <aks_name> --output table

# check your k8s version for control plane and woker node pool
az aks show -g <resourcegroup_name> -n <resourcegroup_name>| grep -E "orchestratorVersion|kubernetesVersion"

# update max-surge to 3 nodes, you can use percentage also e.g.50% (for a node surges half of the no of nodes from the node pool)

dejanu

# Informational Metadata: bundle name, version and description
name: whalesay
version: 0.1.2
description: "An example bundle that uses docker through the magic of whalespeak"
registry: getporter

# Required extensions: Docker access is required to run the bundle
required:
  - docker

dejanu

#!/usr/bin/bash

## Quick check cluster node health status as cluster-admin role

oc logout 2>/dev/null
echo "Select cluster ***********"
echo " 1) First cluster:"
echo " 2) Second cluster:"
read n
# add clusters here:

dejanu

import subprocess
import shlex

def run_command(command):
  """command: str"""
    process = subprocess.Popen(shlex.split(command), stdout=subprocess.PIPE)
    while True:
        output = process.stdout.readline()
        if output == '' and process.poll() is not None:
            break