cxhercules

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cxhercules

I looked around and did not find an answer to this so just sharing.

I deployed a jenkins chart using below command:

helm install -n cd stable/jenkins -f jenkins/values.yaml --version 0.16.6 --wait

Then I wanted to remove external load balancer for a bit, just testing some things so removed it by:

cxhercules

#!/usr/bin/awk -f
#
# Take a PEM format file as input and split out certs and keys into separate files
#

BEGIN                          { n=0; cert=0; key=0; if ( ARGC < 2 ) { print "Usage: pem-split FILENAME"; exit 1 } }
/-----BEGIN PRIVATE KEY-----/  { key=1; cert=0 }
/-----BEGIN CERTIFICATE-----/  { cert=1; key=0 }
split_after == 1               { n++; split_after=0 }
/-----END CERTIFICATE-----/    { split_after=1 }

cxhercules

VBoxManage controlvm minikube natpf1 k8s-apiserver,tcp,127.0.0.1,8443,,8443
kubectl config set-cluster minikube-vpn --server=https://127.0.0.1:8443 --insecure-skip-tls-verify
kubectl config set-context minikube-vpn --cluster=minikube-vpn --user=minikube
kubectl config use-context minikube-vpn
VBoxManage controlvm minikube natpf1 k8s-dashboard,tcp,127.0.0.1,30000,,30000

VBoxManage controlvm minikube natpf1 docker,tcp,127.0.0.1,2376,,2376

minikube docker-env|sed 's/192.168.99.101/127.0.0.1/'

cxhercules

Read from vault without saving secret value

vault read -field=value "secret/gcp-creds/${SERVICE_ACCOUNT_PROJECT_ID}/${SERVICE_ACCOUNT_NAME}.json" \
  | gcloud auth activate-service-account "${SERVICE_ACCOUNT_EMAIL}" --key-file -

cxhercules

#!/bin/bash 

apt-get update
apt-get install -y git wget

# Install Docker
apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \

cxhercules

openssl x509 -in /etc/kubernetes/pki/ca.crt -noout -pubkey | openssl rsa -pubin -outform DER 2>/dev/null | sha256sum | cut -d' ' -f1

Reference:
https://github.com/kubernetes/kubeadm/issues/659#issuecomment-392822587

cxhercules

    # Drain and delete the nodes (for each node you have)
    kubectl drain kubenode1 --delete-local-data --force --ignore-daemonsets
    kubectl delete node kubenode1

    # Reset the deployment
    sudo kubeadm reset

    # On each node

    ## Reset the nodes and weave

cxhercules

#!/bin/bash

cat secrets-alone.yml |awk -F: '{ printf "export %s=",$1; system ("echo "$2"|base64 -d "); system("echo")}'

cxhercules

You need to use a tpl trick to interpolate the value, since helm variable in values are not processed, you have to update your deployment, for example:

In your values.yaml:

  tag: "{{ .Chart.AppVersion }}"

In your deployment:

 image: "{{ .Values.api.image.repository }}:{{ tpl .Values.api.image.tag . }}"