developer-guy

kubectl get pods --all-namespaces | grep Evicted | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod

developer-guy

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

developer-guy

# non root user example for alpine
#
# usage:
# $ docker build --build-arg "USER=someuser" --tag test .
# $ docker run --rm test

FROM alpine

ARG USER=default
ENV HOME /home/$USER

developer-guy

+----------------------------------+---------+------------------------+----------------+
|               Col1               |  Col2   |          Col3          | Numeric Column |
+----------------------------------+---------+------------------------+----------------+
| Value 1                          | Value 2 | 123                    |           10.0 |
| Separate                         | cols    | with a tab or 4 spaces |       -2,027.1 |
| This is a row with only one cell |         |                        |                |
+----------------------------------+---------+------------------------+----------------+

developer-guy

#!/bin/bash

USAGE="Attach to Docker Container
--------------------------
Attach to Docker Container even if the container does not run
ssh daemon. This is accomplished by using linux containers
directly via 'nsenter' (see http://bit.ly/docker_nsenter).
To install 'nsenter', just execute:

    $ docker run -v /usr/local/bin:/target jpetazzo/nsenter

developer-guy

$ cat Makefile
cross-build:
	@docker buildx create --name mybuilder --use
	@docker buildx build --platform ${BUILDX_PLATFORMS} -t ${PROD_IMAGE} --push ./app

$ BUILDX_BINARY_URL="https://github.com/docker/buildx/releases/download/v0.4.2/buildx-v0.4.2.linux-amd64"
$ curl --output docker-buildx \
       --silent --show-error --location --fail --retry 3 \
        "$BUILDX_BINARY_URL"
$ mkdir -p ~/.docker/cli-plugins

developer-guy

$ cat <<EOF >> Dockerfile
FROM alpine
ARG TARGETPLATFORM
ARG TARGETOS
ARG TARGETARCH
ARG TARGETVARIANT

ARG BUILDPLATFORM
ARG BUILDOS
ARG BUILDARCH

developer-guy

package main

import (
	"context"
	"fmt"
	"golang.org/x/oauth2"
	"golang.org/x/oauth2/endpoints"
	"log"
	"net"
	"net/http"

developer-guy

package main

import (
   "context"
   "fmt"
   "github.com/google/go-github/v32/github"
)

func main() {
   client := github.NewClient(nil)

developer-guy

#!/usr/bin/env bash
set -e

# Get the distribution
mkdir istio
cd istio
curl -L https://istio.io/downloadIstio | sh -
cd istio-1.8.0

# Create a namespace for Istio