gino geunho

download node_exporter binary to /usr/sbin/
add systemd config file vim /etc/systemd/system/node_exporter.service

[Unit]
Description=Node Exporter

[Service]
User=root
ExecStart=/usr/sbin/node_exporter

https://docs.spring.io/spring-boot/docs/current/reference/html/appendix-application-properties.html spring.kafka prefixed properties

Key	Default Value	Description
spring.kafka.admin.client-id		ID to pass to the server when making requests. Used for server-side logging.
spring.kafka.admin.fail-fast	false	Whether to fail fast if the broker is not available on startup.
spring.kafka.admin.properties.*		Additional admin-specific properties used to configure the client.
spring.kafka.admin.ssl.key-password		Password of the private key in the key store file.
spring.kafka.admin.ssl.key-store-location		Location of the key store file.

생성 시간 순으로 모든 이벤트 조회

kubectl get events --all-namespaces  --sort-by='.metadata.creationTimestamp'
NAMESPACE   LAST SEEN   TYPE      REASON              OBJECT                                        MESSAGE
default     59m         Warning   FailedMount         pod/kafka-connect-history-744c4cb5f9-br66z    MountVolume.SetUp failed for volume "config-file" : configmap "kafka-connect-history-default-config" not found
default     54m         Warning   FailedMount         pod/kafka-connect-history-744c4cb5f9-br66z    Unable to mount volumes for pod "kafka-connect-history-744c4cb5f9-br66z_default(38034b71-8a92-42ed-9afd-b3894f79bc56)": timeout expired waiting for volumes to attach or mount for pod "default"/"kafka-connect-history-744c4cb5f9-br66z". list of unmounted volumes=[nubes ep-volume timezone config-file default-token-zgztl]. list of unattached volumes=[nubes ep-volume timezone config-file default-token-zgztl]
default     46m         Normal    ScalingReplicaSet   deployment/kafka-connect-history

	REM test A - 001
	REM test B - 002
	REM get rid of last 6 characters

	SET title_a=test A - 001
	SET title_b=test B - 002

	SET first=%title_a:~0,-6%
	SET second=%title_b:~0,-6%

	# rm_directories.sh /path/of/root keyword
	#
	# 특정 파일과 폴더 목록을 가져와서 삭제하는 스크립트
	##################################################
	root_path=$1
	keyword=$2

	# 1. 전체 목록을 가져와서
	# 2. 키워드로 필터하고
	# 3. 마지막 파일, 폴더 이름을 가져와서

	# remove_old_files.sh /path/of/root 90
	#
	# 오래된 파일을 삭제한다.
	##########################################

	$root_path=$1
	$days_past=$2

	find $root_path -type d -ctime +$days_past \| xargs rm -rf

	listening() {
	if [ $# -eq 0 ]; then
	sudo lsof -iTCP -sTCP:LISTEN -n -P
	elif [ $# -eq 1 ]; then
	sudo lsof -iTCP -sTCP:LISTEN -n -P \| grep -i --color $1
	else
	echo "Usage: listening [pattern]"
	fi
	}

	import java.io.InputStream;
	import java.net.URL;
	import java.net.URLConnection;

	public class HttpClient {
	public static void main(String[] args) {
	if (args.length == 0) {
	System.err.println("Url must be specified.");
	return;
	}

	# Debian 7 “Wheezy” archived apt repository

	echo "deb http://archive.debian.org/debian wheezy main" >> /etc/apt/sources.list
	echo "deb http://archive.debian.org/debian-security wheezy/updates main" >> /etc/apt/sources.list