Adrián Riobo Lorenzo adrianriobo

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adrianriobo / istio-requests-troubleshooting.sh

Created January 25, 2019 12:23

Troubleshooting istio requests

	#Access istio proxy for concrete pod
	kubectl -n $namespace $pod -c istio-proxy -- /bin/bash

	#Use TCP dump to troubleshooting the requests
	sudo tcpdump -vvv -i eth0 -A 'tcp[((tcp[12:1] & 0xf0) >> 2):4] = 0x47455420'

adrianriobo / kafka_message_check.sh

Last active October 16, 2019 07:17

Kafka tools related commands

	#List topics
	kafka-topics --zookeeper zk01.example.com:2181 --list

	#Get kafka offsets info from kafka internal topic with ssl configuration
	#included formatter to translate binary data
	kafka-console-consumer --bootstrap-server 10.180.48.138:19093 --topic __consumer_offsets \
	--formatter "kafka.coordinator.group.GroupMetadataManager\$OffsetsMessageFormatter" \
	--from-beginning --consumer-property bootstrap.servers=10.180.48.138:19093 \
	--consumer-property security.protocol=SSL \
	--consumer-property ssl.truststore.location=/etc/kafka/secrets/kafka.truststore.jks \

adrianriobo / Buildah with Dockerfile

Created April 22, 2020 14:02

Buildah with Dockerfile

	# Run container with docker context
	docker run -it --privileged -v $PWD:/opt quay.io/buildah/stable:v1.14.0 bash

	# Build image
	buildah bud --format oci --storage-driver=vfs --layers -t image:version .

	# Get ECR credentials
	aws ecr get-login
	export ECR_LOGIN=AWS
	export ECR_TOKEN=...

adrianriobo / kubectl-helper.sh

Last active May 20, 2020 07:05

Kubectl commands

	#Go templating with special characters:
	#Check ephemeral storage per node due to pod eviction
	kubectl get nodes $NODE_ID \
	-o go-template='{{ $ephemeral := index .status.allocatable "ephemeral-storage" }}{{ $ephemeral}}'

adrianriobo / certs_management.sh

Last active September 23, 2020 13:28

Some linux commands on troubleshooting

	#Download certs from site
	echo "" \| openssl s_client -host {HOST} -port 443 -showcerts \| awk '/BEGIN CERT/ {p=1} ; p==1; /END CERT/ {p=0}' > allcerts.pem

	#Import certs
	keytool -import -alias your-alias -keystore cacerts -file certificate.der

adrianriobo / bash-sample.sh

Last active December 18, 2020 06:31

Proper way to create bash scripts with set command included

	#!/bin/bash

	set -exuo pipefail

	[explanation](https://gist.github.com/mohanpedala/1e2ff5661761d3abd0385e8223e16425)

	# kill all the child processes for this script when it exits
	trap 'jobs=($(jobs -p)); ((${#jobs})) && kill "${jobs[@]}" \|\| true; exit 0' TERM

adrianriobo / podman-systemd-generator.sh

Created October 15, 2020 14:55

podman as systemd generator

	#!/bin/bash

	podman run -d --name=gvisor-tap-vsock --privileged --net=host -it quay.io/crcont/gvisor-tap-vsock:v3
	podman generate systemd --restart-policy=no gvisor-tap-vsock > /etc/systemd/system/gvisor-tap-vsock.service
	systemctl daemon-reload
	systemctl enable gvisor-tap-vsock.service

adrianriobo / Network.ps

Last active December 9, 2020 08:53

Powershell for DNS

	# Check rules
	Get-DnsClientNrptRule

	#Set metric to manage interface precedence order
	Set-NetIPInterface -InterfaceIndex 17 -InterfaceMetric 15

	# Check / Set DNS address
	Get-DnsClientServerAddress
	Set-DnsClientServerAddress -InterfaceIndex 17 -ServerAddresses ("172.17.167.38")
	Set-DnsClientServerAddress -InterfaceIndex 17 -ResetServerAddresses

adrianriobo / filesystem.sh

Created November 23, 2020 07:58

Linux troubleshooting

	# Check largest files
	sudo du -a /dir/ \| sort -n -r \| head -n 20

adrianriobo / export-import-gpg.sh

Last active August 5, 2024 11:05

gpg management

	# Get ID
	gpg --auto-key-locate keyserver --locate-keys [email protected]
	# Export
	gpg -ao mypub.key --export <MY_KEY_ID>
	gpg -ao myprivate.key --export-secret-keys <MY_KEY_ID>
	# Import
	gpg --import myprivate.key
	gpg --import mypub.key