xsqian’s gists

xsqian / change a kubernetes object on the fly

Created February 26, 2021 18:40

	kubectl -n kube-system get deployment coredns -o yaml \| \
	sed 's/allowPrivilegeEscalation: false/allowPrivilegeEscalation: true/g' \| \
	kubectl apply -f -

xsqian / gist:d26eeda3da9ce2035010e6ad83a00346

Last active February 26, 2021 18:43

get the kubernetes secret and print on terminal

	kubectl -n kube-system describe secret $(kubectl -n kube-system get secret \| grep admin-user \| awk '{print $1}')

	export CLUSTER_IP=$(kubectl get services/webapp1-clusterip-svc -o go-template='{{(index .spec.clusterIP)}}')
	echo CLUSTER_IP=$CLUSTER_IP
	curl $CLUSTER_IP:80

	sed -i 's/HOSTIP/172.17.0.16/g' externalip.yaml

	export LoadBalancerIP=$(kubectl get services/webapp1-loadbalancer-svc -o go-template='{{(index .status.loadBalancer.ingress 0).ip}}')
	echo LoadBalancerIP=$LoadBalancerIP

xsqian / sed for file manipulation

Created September 11, 2020 19:58

delete a line from a file with a pattern

sed -i '' '/charset=latin1/d' ./not-appliable.sql

xsqian / find-file-contains-a-specific-string

Created July 25, 2018 21:53

find . -name '*.js' -exec grep -i 'NPM_TOKE' {} \; -print

xsqian / mongo-shell-prompt

Last active July 13, 2018 15:40

	host = db.serverStatus().host;

	prompt = function() {
	return db+"@"+host+"$ ";
	}

	or to get the uptime and total number of documents

	prompt = function() {
	return "Uptime:"+db.serverStatus().uptime+" Documents:"+db.stats().objects+" > ";

xsqian / find-process-from-port

Created July 12, 2018 21:05

sudo lsof -i :27017 # checks port 27017

xsqian / a sample device twin JSON document

Created April 14, 2018 18:00

	{
	"deviceId": "devA",
	"etag": "AAAAAAAAAAc=",
	"status": "enabled",
	"statusReason": "provisioned",
	"statusUpdateTime": "0001-01-01T00:00:00",
	"connectionState": "connected",
	"lastActivityTime": "2015-02-30T16:24:48.789Z",
	"cloudToDeviceMessageCount": 0,
	"authenticationType": "sas",

xsqian / datadog-agent.yaml

Created April 9, 2018 18:33

	apiVersion: extensions/v1beta1
	kind: DaemonSet
	metadata:
	name: datadog-agent
	spec:
	template:
	metadata:
	labels:
	app: datadog-agent
	name: datadog-agent

xsqian / deploy_airpal_env.json

Created April 3, 2018 00:39

	{
	"AWSTemplateFormatVersion": "2010-09-09",
	"Parameters": {
	"PrestoCoordinatorURL": {
	"Description": "URL of the Presto Server. example: http://ec2-xx-xx-xx-xx.compute-1.amazonaws.com:8889",
	"Type": "String"
	},
	"AirpalPort": {
	"Description": "Airpal Port",
	"Type": "String",

xsqian / terminal_title.sh

Created March 17, 2018 06:03

echo -n -e "\033]0;My Terminal Title\007"