froop’s gists

froop / TestDnsQuotaByInetAddress.java

Last active March 26, 2022 07:41

[AWS][EC2][Java] AWSのDNSクォータをテスト

	// Command: java -Dsun.net.inetaddr.ttl=0 TestDnsQuotaByInetAddress 172.30.3.11
	// Metric: ethtool -S eth0 \| grep linklocal_allowance_exceeded
	public class TestDnsQuotaByInetAddress {
	private static final int TRIALS = 10_000;
	private static final int THREADS = 1_024;
	private static final int LOG_THRESHOLD = 1_000;

	public static void main(String[] args) throws InterruptedException, ExecutionException {
	final String host = args[0];
	final ExecutorService executor = Executors.newFixedThreadPool(THREADS);

froop / InstallHinemosAgent.ps1

Last active August 3, 2022 10:36

[Windows] Install Hinemos Agent

	Param($Major='6.2', $Minor='2', $Manager='172.30.3.10')

	$PackageZip = "hinemos-agent-${Major}.${Minor}-1.win.zip"
	$DownloadUrl = "https://github.com/hinemos/hinemos/releases/download/v${Major}.${Minor}/${PackageZip}"
	$PackageMsi = "C:\HinemosAgentInstaller-${Major}.${Minor}_win.msi"
	$InstallPath = "C:\Program Files (x86)\Hinemos\Agent${Major}.${Minor}"
	$ServiceName = "Hinemos_${Major}_Agent"

	(New-Object System.Net.WebClient).DownloadFile(${DownloadUrl}, "C:\${PackageZip}")
	Expand-Archive -Path "C:\${PackageZip}" -DestinationPath "C:\"

froop / TestRaceConditionOfArrayList.java

Last active February 22, 2022 11:41

[Java] ArrayListを複数スレッドから使用した場合に発生する競合のテスト

	public class TestRaceConditionOfArrayList {
	private static final int NUMBER_OF_TRIALS = 1_000_000;
	private static final int NUMBER_OF_THREADS = 8;
	private static final List<Integer> SOURCE_LIST = Arrays.asList(1, 2);

	public static void main(String[] args) throws InterruptedException, ExecutionException {
	ExecutorService executor = Executors.newFixedThreadPool(NUMBER_OF_THREADS);
	List<Future<String>> futures = new ArrayList<>();
	Testee testee = new Testee();
	for (int i = 0; i < NUMBER_OF_TRIALS; i++) {

froop / InstallSnmp.ps1

Created February 5, 2022 08:14

[Windows] Install SNMP Service

	Install-WindowsFeature SNMP-Service -IncludeAllSubFeature -IncludeManagementTools
	Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\ValidCommunities" -Name "public" -Value 4 -type DWord
	Remove-Item -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\PermittedManagers"
	#Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\PermittedManagers" -Name "1" -Value "localhost" -type String
	#Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\PermittedManagers" -Name "2" -Value "172.30.3.10" -type String
	Restart-Service -Name SNMP
	New-NetFirewallRule -DisplayName "SNMP Service" -Direction Inbound -Protocol UDP -LocalPort 161 -Action Allow

froop / InstallJava8Oracle.ps1

Last active August 3, 2022 10:56

[Windows] Insatall Oracle Java 8

	$URL = "https://javadl.oracle.com/webapps/download/AutoDL?BundleId=246808_424b9da4b48848379167015dcc250d8d" # 8u341
	#$URL = "https://javadl.oracle.com/webapps/download/AutoDL?BundleId=246474_2dee051a5d0647d5be72a7c0abff270e" # 8u333
	#$URL = "https://javadl.oracle.com/webapps/download/AutoDL?BundleId=245807_df5ad55fdd604472a86a45a217032c7d" # 8u321
	#$URL = "https://javadl.oracle.com/webapps/download/AutoDL?BundleId=245479_4d5417147a92418ea8b615e228bb6935" # 8u311
	(New-Object System.Net.WebClient).DownloadFile($URL, "C:\jre8.exe")
	cmd /C "C:\jre8.exe" /s
	[System.Environment]::SetEnvironmentVariable("JAVA_HOME", "C:\Program Files\Java\jre1.8.0_341", "Machine")
	Remove-Item "C:\jre8.exe"

froop / regex-sample.py

Created December 26, 2021 06:51

[Python] 正規表現サンプル

	import re
	with open('/content/drive/MyDrive/input.tsv') as file:
	for line in file:
	res = re.match('^([^\t]+)\t([^\t]+)\t.{3}([^\t]+)\t([^\t]+)$', line)
	print('%s\t%s\t%s' % (res.group(2), res.group(4), bytes.fromhex(res.group(3))))

froop / ec2-launch-template.bat

Last active November 29, 2021 22:18

[AWS][Windows] Launch EC2 instance from template

	set /P TEMPLATE_ID=Template ID:

	aws ec2 run-instances ^
	--launch-template LaunchTemplateId=%TEMPLATE_ID% ^
	> ec2-run-instance.log
	REM change instance type: --instance-type t3.nano ^

	aws ec2 describe-instances ^
	--filters ^
	"Name=tag:aws:ec2launchtemplate:id,Values=%TEMPLATE_ID%" ^

froop / cloud-config.yml

Last active December 23, 2021 23:17

[Linux][EC2] CentOS 7環境構築

	#cloud-config
	timezone: Asia/Tokyo
	runcmd:
	- cd /home/centos
	- curl -L -o init-os.sh https://gist.github.com/froop/224549dad2a39c584b571ee16ca66142/raw/init-centos7-ec2.sh
	- chmod +x init-os.sh
	- ./init-os.sh
	- rm init-os.sh

froop / configure-docker-centos7.sh

Last active December 23, 2021 23:17

[Linux] CentOS 7 + Docker

	#!/bin/bash -eu

	# locale
	localectl set-locale LANG=ja_JP.UTF-8

	# timezone
	echo 'ZONE="Asia/Tokyo"' > /etc/sysconfig/clock
	rm -f /etc/localtime
	ln -fs /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

froop / httplib.py

Created September 25, 2021 20:23

[Python] HTTP GET minimum (Python 2.7)