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<!DOCTYPE html>
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title="pfp by 中森 煙 @kemurismoke" /></a></div><h1 class="home-title">Oscar T.</h1><h2 class="home-subtitle">Nice to meetcha on the Kumo <3</h2><div class="links"><a href="https://github.com/LYTzeng" title="GitHub" target="_blank" rel="noopener noreffer me"><i class="fab fa-github-alt fa-fw"></i></a><a href="https://linkedin.com/in/li-yen-tseng" title="LinkedIn" target="_blank" rel="noopener noreffer me"><i class="fab fa-linkedin fa-fw"></i></a><a href="https://steamcommunity.com/id/yen-host" title="Steam" target="_blank" rel="noopener noreffer me"><i class="fab fa-steam fa-fw"></i></a><a href="https://www.twitch.tv/0scar0x0" title="Twitch" target="_blank" rel="noopener noreffer me"><i class="fab fa-twitch fa-fw"></i></a><a href="mailto:oscar@o3r.moe" title="Email" rel=" me"><i class="far fa-envelope fa-fw"></i></a><a href="https://discordapp.com/users/697020575989628989" title="Discord" target="_blank" rel="noopener noreffer me"><i class="fab fa-discord fa-fw"></i></a><a href="/index.xml" title="RSS" target="_blank" rel="noopener noreffer me"><i class="fas fa-rss fa-fw"></i></a></div></div>
<article class="single summary" itemscope itemtype="http://schema.org/Article"><div class="featured-image-preview">
<a href="/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/"><img
class="lazyload"
src="/svg/fox-loading.min.svg"
data-src="/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location.png"
data-srcset="/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location.png, /using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location.png 1.5x, /using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location.png 2x"
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alt="/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location.png"
title="/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location.png" /></a>
</div><h1 class="single-title" itemprop="name headline">
<a href="/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/">透過相同域名，將用戶依據地理位置路由至對應 S3 bucket</a>
</h1><div class="post-meta"><span class="post-author"><a href="/about/" title="Author" rel=" author" class="author"><i class="fas fa-user-circle fa-fw"></i>Oscar Tseng</a></span> <span class="post-publish">published on <time datetime="2022.09.01">2022.09.01</time></span> <span class="post-category">included in <a href="/categories/aws/"><i class="far fa-folder fa-fw"></i>AWS</a></span></div><div class="content">前言 最近遇到客戶有上傳至 S3 的應用，因為客戶希望使用同一個域名，依據用戶所在國家，自動路由到最接近的 region 的 S3 bucket 進行上傳，以增進用戶上傳速度體驗。</div><div class="post-footer">
<a href="/using-single-domain-routing-to-s3-buckets-in-different-regions-based-on-client-location/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw"></i> <a href="/tags/aws/">aws</a>, <a href="/tags/s3/">s3</a>, <a href="/tags/cloudfront/">cloudfront</a>, <a href="/tags/route53/">route53</a>, <a href="/tags/le/">l@e</a></div></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><div class="featured-image-preview">
<a href="/aaru-tkl/"><img
class="lazyload"
src="/svg/fox-loading.min.svg"
data-src="/aaru-tkl/22-04-16%2022-50-36%200271.jpg.webp"
data-srcset="/aaru-tkl/22-04-16%2022-50-36%200271.jpg.webp, /aaru-tkl/22-04-16%2022-50-36%200271.jpg.webp 1.5x, /aaru-tkl/22-04-16%2022-50-36%200271.jpg.webp 2x"
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alt="/aaru-tkl/22-04-16%2022-50-36%200271.jpg.webp"
title="/aaru-tkl/22-04-16%2022-50-36%200271.jpg.webp" /></a>
</div><h1 class="single-title" itemprop="name headline">
<a href="/aaru-tkl/">Helix Lab AARU TKL 客製化鍵盤，第一次組裝就上手</a>
</h1><div class="post-meta"><span class="post-author"><a href="/about/" title="Author" rel=" author" class="author"><i class="fas fa-user-circle fa-fw"></i>Oscar Tseng</a></span> <span class="post-publish">published on <time datetime="2022.04.18">2022.04.18</time></span> <span class="post-category">included in <a href="/categories/keyboards/"><i class="far fa-folder fa-fw"></i>Keyboards</a></span></div><div class="content">前言 第一次使用機械式鍵盤大約是在大學唸資工系時，因為寫程式需要爽感才寫得下去，因此入手一個雜牌青軸。 一直到研究所時，陸續換了 Ducky One 2 櫻桃紅軸和</div><div class="post-footer">
<a href="/aaru-tkl/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw"></i> <a href="/tags/peripherals/">Peripherals</a></div></div>
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<a href="/aws-internship-experience/"><img
class="lazyload"
src="/svg/fox-loading.min.svg"
data-src="/aws-internship-experience/P_20200828_133029.webp"
data-srcset="/aws-internship-experience/P_20200828_133029.webp, /aws-internship-experience/P_20200828_133029.webp 1.5x, /aws-internship-experience/P_20200828_133029.webp 2x"
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alt="/aws-internship-experience/P_20200828_133029.webp"
title="/aws-internship-experience/P_20200828_133029.webp" /></a>
</div><h1 class="single-title" itemprop="name headline">
<a href="/aws-internship-experience/">AWS Taiwan 實習感想 2020-2021</a>
</h1><div class="post-meta"><span class="post-author"><a href="/about/" title="Author" rel=" author" class="author"><i class="fas fa-user-circle fa-fw"></i>Oscar Tseng</a></span> <span class="post-publish">published on <time datetime="2022.02.21">2022.02.21</time></span> <span class="post-category">included in <a href="/categories/thoughts/"><i class="far fa-folder fa-fw"></i>Thoughts</a></span></div><div class="content">在 2020 年，剛好是我在臺北科技大學唸研究所的時候，經過重重關卡，很幸運能進入 AWS 做 Cloud Support Intern。 但是寫這篇感想文時，已經是 2022 了 (也已轉為正職)</div><div class="post-footer">
<a href="/aws-internship-experience/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw"></i> <a href="/tags/aws/">aws</a>, <a href="/tags/experiences/">Experiences</a>, <a href="/tags/interview/">Interview</a></div></div>
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<a href="/lambda-apigateway-mattermost-go-ec2/"><img
class="lazyload"
src="/svg/fox-loading.min.svg"
data-src="/lambda-apigateway-mattermost-go-ec2/lambda-apigateway-mattermost-go-ec2-1.jpg"
data-srcset="/lambda-apigateway-mattermost-go-ec2/lambda-apigateway-mattermost-go-ec2-1.jpg, /lambda-apigateway-mattermost-go-ec2/lambda-apigateway-mattermost-go-ec2-1.jpg 1.5x, /lambda-apigateway-mattermost-go-ec2/lambda-apigateway-mattermost-go-ec2-1.jpg 2x"
data-sizes="auto"
alt="/lambda-apigateway-mattermost-go-ec2/lambda-apigateway-mattermost-go-ec2-1.jpg"
title="目前我實習的公司使用 Mattermost 作為內部通訊軟體，且 Mattermost 支援 Webhook 和 Slash Command。為了方便隨時隨地可以快速開啟/關閉 EC2，因此想寫一個下 Slash Command 指令的工具，直接呼叫 API 來控制和查看 EC2，免去登入 console 的麻煩，一定會方便許多。我使用 Go 寫了一個程式處理 Mattermost 傳入的資料，並且透過 aws-sdk-go 對 EC2 進行操作。程式會在 Lambda 上執行，原始碼請參考我的 Github：https://github.com/LYTzeng/ec2ctl，日後考慮用 CloudFormation 讓需要的人快速佈署。這篇主要會介紹 API Gateway、Lambda 和部份 SDK 的使用。" /></a>
</div><h1 class="single-title" itemprop="name headline">
<a href="/lambda-apigateway-mattermost-go-ec2/">透過 AWS Lambda、API Gateway 和 AWS Go SDK，從 Mattermost 查看/開關 EC2 Instances</a>
</h1><div class="post-meta"><span class="post-author"><a href="/about/" title="Author" rel=" author" class="author"><i class="fas fa-user-circle fa-fw"></i>Oscar Tseng</a></span> <span class="post-publish">published on <time datetime="2020.04.21">2020.04.21</time></span> <span class="post-category">included in <a href="/categories/aws/"><i class="far fa-folder fa-fw"></i>AWS</a></span></div><div class="content">目前我實習的公司使用 Mattermost 作為內部通訊軟體，且 Mattermost 支援 Webhook 和 Slash Command。為了方便隨時隨地可以快速開啟/關閉 EC2，因此想寫一個下 Slash Command 指令的工具</div><div class="post-footer">
<a href="/lambda-apigateway-mattermost-go-ec2/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw"></i> <a href="/tags/go/">go</a>, <a href="/tags/aws-lambda/">aws lambda</a>, <a href="/tags/aws-ec2/">aws ec2</a>, <a href="/tags/aws-api-gateway/">aws api gateway</a></div></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><div class="featured-image-preview">
<a href="/monitoring-pfsense-via-kibana/"><img
class="lazyload"
src="/svg/fox-loading.min.svg"
data-src="/monitoring-pfsense-via-kibana/monitoring-pfsense-via-kibana.png"
data-srcset="/monitoring-pfsense-via-kibana/monitoring-pfsense-via-kibana.png, /monitoring-pfsense-via-kibana/monitoring-pfsense-via-kibana.png 1.5x, /monitoring-pfsense-via-kibana/monitoring-pfsense-via-kibana.png 2x"
data-sizes="auto"
alt="/monitoring-pfsense-via-kibana/monitoring-pfsense-via-kibana.png"
title="Kibana 能夠將資料視覺化成各種圖表並進行分析，同時提供 ELK Stack 的管理介面，架設完成的 ELK Stack 之後只需進入 Kibana，就可以透過這個 portal 瀏覽一切 Elastic 的服務。之前我將 pfSense 的 pfBlockerNG 防火牆阻擋紀錄透過 syslog 送給 Logstash，並且使用 Elasticsearch 接收已結構化的資料來提供全文搜尋服務，最後一步就是架設 Kibana 進行視覺化。" /></a>
</div><h1 class="single-title" itemprop="name headline">
<a href="/monitoring-pfsense-via-kibana/">ELK Stack 整合 pfSense (三)：Kibana Dashboard</a>
</h1><div class="post-meta"><span class="post-author"><a href="/about/" title="Author" rel=" author" class="author"><i class="fas fa-user-circle fa-fw"></i>Oscar Tseng</a></span> <span class="post-publish">published on <time datetime="2020.03.14">2020.03.14</time></span> <span class="post-category">included in <a href="/categories/infra/"><i class="far fa-folder fa-fw"></i>Infra</a></span></div><div class="content">Kibana 能夠將資料視覺化成各種圖表並進行分析，同時提供 ELK Stack 的管理介面，架設完成的 ELK Stack 之後只需進入 Kibana，就可以透過這個 portal 瀏覽一切 Elastic 的服務。之</div><div class="post-footer">
<a href="/monitoring-pfsense-via-kibana/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw"></i> <a href="/tags/elk/">ELK</a>, <a href="/tags/pfsense/">pfSense</a></div></div>
</article><article class="single summary" itemscope itemtype="http://schema.org/Article"><div class="featured-image-preview">
<a href="/sending-logs-from-pfsense-2-logstash/"><img
class="lazyload"
src="/svg/fox-loading.min.svg"
data-src="/sending-logs-from-pfsense-2-logstash/sending-logs-from-pfsense-2-logstash.png"
data-srcset="/sending-logs-from-pfsense-2-logstash/sending-logs-from-pfsense-2-logstash.png, /sending-logs-from-pfsense-2-logstash/sending-logs-from-pfsense-2-logstash.png 1.5x, /sending-logs-from-pfsense-2-logstash/sending-logs-from-pfsense-2-logstash.png 2x"
data-sizes="auto"
alt="/sending-logs-from-pfsense-2-logstash/sending-logs-from-pfsense-2-logstash.png"
title="Logstash 的功能像是一個接收器，支援從許多種 Protocol 接收 Log，如 Syslog、Netflow等，並且透過 Parser 將非結構化資料轉換成半結構化資料。Parser 方便的是使用 Grok Pattern，可以避免自行撰寫複雜的 Regex，不過他也支援 Regex 讓我們可以自訂 Pattern，因此 logstash 的 parsing 是很彈性的。本系列文章介紹 pfSense 與 ELK Stack (7.6 版) 的整合，藉此分析與收集阻擋的連接紀錄。" /></a>
</div><h1 class="single-title" itemprop="name headline">
<a href="/sending-logs-from-pfsense-2-logstash/">ELK Stack 整合 pfSense (一)：將 pfSense 防火牆阻擋紀錄傳送到 Logstash</a>
</h1><div class="post-meta"><span class="post-author"><a href="/about/" title="Author" rel=" author" class="author"><i class="fas fa-user-circle fa-fw"></i>Oscar Tseng</a></span> <span class="post-publish">published on <time datetime="2020.03.13">2020.03.13</time></span> <span class="post-category">included in <a href="/categories/infra/"><i class="far fa-folder fa-fw"></i>Infra</a></span></div><div class="content">Logstash 的功能像是一個接收器，支援從許多種 Protocol 接收 Log，如 Syslog、Netflow等，並且透過 Parser 將非結構化資料轉換成半結構化資料。Parser</div><div class="post-footer">
<a href="/sending-logs-from-pfsense-2-logstash/">Read More</a><div class="post-tags">
<i class="fas fa-tags fa-fw"></i> <a href="/tags/elk/">ELK</a>, <a href="/tags/pfsense/">pfSense</a></div></div>
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