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<h3 class="title"><a href="/">MCの飄狂山莊㊣</a></h3>
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<span class="subtitle">What’s the Worst That Could Happen?</span>
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<h3><a href="/post/recommended-ulauncher-in-ubuntu-1804/">[推薦] ulauncher ubuntu 18.04 底下，好用的 app launcher / Recommended Ulauncher in Ubuntu 1804</a></h3>
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<span class="date moment">2019-10-04</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>這兩天在找關於在 ubuntu 中做搜尋的軟體</p>
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<p>意外找到一個非常好用的工具 ulauncher</p>
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<p></p>
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<a href="/tags/launcher">launcher</a>
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<h3><a href="/post/pg_auto_failover_in_ubuntu_1804_psql_11/">[筆記] 在ubuntu 18.04安裝psql 11 以及 pg_auto_failover / install psql 11 and pg_auto_failover in ubuntu 18.04</a></h3>
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<div class="meta">
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<span class="date moment">2019-09-20</span>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>最近都在弄postgresql</p>
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<p>備份、還原測試得差不多了，就等著看到時候要用什麼方式</p>
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<p>前幾天看到 pg_auto_failover 這個postgresql 的extension</p>
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<p><a href="https://github.com/citusdata/pg_auto_failover">https://github.com/citusdata/pg_auto_failover</a></p>
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<p>感覺挺不錯的，看起來設定很簡單，雖然之前已經測試了 keepalived 做 HA</p>
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<p>不過，反正當作練功嘛，多測試一套也不錯！</p>
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<p></p>
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<a href="/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/">
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<div class="content">
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<h3><a href="/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/">[筆記] 測試 USB 3.1 Gen2 NVME SSD 外接盒 & 內建pci-e ssd & 外接SATA SSD / Bencmark With External Internal Nvme Ssd and External Sata Ssd</a></h3>
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<div class="meta">
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<span class="date moment">2019-09-10</span>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>前幾天在淘寶上買了個 SSK 的USB 3.1 Gen2 (type-c) NVME SSD 外接盒
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手邊也剛好有一條多的intel 600p nvme ssd 就順手來做個比較
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目標是看看有沒有可能直接用外接的SSD來跑postgresql</p>
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<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">
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<h3><a href="/post/postgresql-backup-restore-using-zfs-snapshot/">[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</a></h3>
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<div class="meta">
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<span class="date moment">2019-09-06</span>
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</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>前面測試了用pgbarman / pgbackrest 來備份 postgresql</p>
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<p>這次改從system file level 來下手</p>
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<p>採用zfs 的快照來備份、還原postgresql 資料庫</p>
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<p></p>
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<a href="/tags/backup">backup</a>
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<a href="/tags/restore">restore</a>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">
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<div class="content">
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<h3><a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a></h3>
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<div class="meta">
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<span class="date moment">2019-09-05</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>這兩天在測試pgbackrest ，簡單筆記一下測試狀況</p>
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<p></p>
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<div class="content">
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<h3><a href="/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/">[筆記] 在Ubuntu 18.04 下 透過 pgbarman rsync/ssh backup 備份 postgresql 10 / backup postgresql 10 with pgbarman via ssh/rsync in ubuntu 18.04</a></h3>
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<div class="meta">
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<span class="date moment">2019-08-23</span>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>這篇繼續講 pgbarman 透過 rsync/ssh 來備份 postgresql 資料庫的方式</p>
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<div class="content">
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<h3><a href="/post/pgbarman-in-ubuntu-1804-postgresql-10/">[筆記] 在Ubuntu 18.04 下 透過 pgbarman streaming backup 備份 postgresql 10/ backup postgresql 10 with pgbarman straming backup in ubuntu 18.04</a></h3>
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<div class="meta">
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<span class="date moment">2019-08-23</span>
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<span class="categories">
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>很久以前就有看到這個用來備份postgresql 的 pgbarman</p>
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<p><a href="https://www.pgbarman.org/">https://www.pgbarman.org/</a></p>
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<p>前幾天老闆在slack 上面又提到，所以這次就花了點時間來玩玩看</p>
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<p>不過呢，雖然有弄起來，但是還真不知道有些問題是怎麼解決的…</p>
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<p></p>
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<a href="/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/">
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<h3><a href="/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/">[筆記] 在ubuntu 18.04 下安裝nvidia 顯示卡驅動程式以及 pgstrom / Install Nvidia Driver Cuda Pgstrom in Ubuntu 1804</a></h3>
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<div class="meta">
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<span class="date moment">2019-08-20</span>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>因為老闆說要試試看用GPU 來跑postgresql 威力</p>
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<p>手邊剛好有一張 geforce gt 720</p>
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<p>一開始沒想太多，看到有這張卡的驅動程式，然後CUDA也有支援</p>
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<p>就直接從桌機拔下來，接去LAB Server ，然後就開始一連串的難關了…</p>
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<p></p>
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<a class="bubble" href="/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/">
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<h3><a href="/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/">[筆記] 在gcp 中用wireguard建立VPN時，不要用 10.0.0.0/16 網段/Do No Use 10 0 0 0 Private Ipaddr in GCP</a></h3>
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<div class="meta">
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<span class="date moment">2019-08-16</span>
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<span class="categories">
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>最近一直在玩 wireguard ，先前把各個分公司和總部的VPN 改用 wireguard 建立</p>
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<p>想說再打個VPN tunnel 來當跳板連 ptt 好了</p>
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<p>因為wireguard 建立很簡單，而且又可以指定想要繞出去的路由，不會影響原本的網路環境</p>
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<p>本來是在vultr 的VPS上面建立這個tunnel</p>
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<p>但是那台VPS連去ptt 很頓，卡卡的</p>
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<p>所以改用google cloud platform 的free tier 來做</p>
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<p>反正只是拿來當跳板，不會有什麼流量、運算產生，可以一直保持免費的狀態</p>
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<p></p>
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<div class="content">
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<h3><a href="/post/multiple-site-to-site-vpn-using-wireguard/">[筆記] 透過 wireguard 建立多點 site to site VPN / Multiple Site to Site VPN Using Wireguard</a></h3>
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<div class="meta">
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<span class="date moment">2019-08-13</span>
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<span class="categories">
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>因為實在受夠了現在用的 openwrt + strongswan 建立 IPSec VPN</p>
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<p>雖然說其實沒有什麼不好，但是畢竟不是我建立的，而當初的文件也都不見了</p>
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<p>完全沒辦法了解當時設計的邏輯，造成後續debug 困難</p>
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<p>可以想像一下，一台VPN router ping 不到remote、ping不到internet、甚至ping不到自己 是要怎麼debug !?(翻桌</p>
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<p>之前買了兩台edgerouter X 拿來玩了一下 wireguard，感覺還不錯，不過只有測試到點對點</p>
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<p>這次試試看躲在gateway後面，看看能不能建立多點的VPN環境</p>
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<p></p>
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<a href="/post/recommended-ulauncher-in-ubuntu-1804/">[推薦] ulauncher ubuntu 18.04 底下，好用的 app launcher / Recommended Ulauncher in Ubuntu 1804</a>
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<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</a>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/">[筆記] 在Ubuntu 18.04 下 透過 pgbarman rsync/ssh backup 備份 postgresql 10 / backup postgresql 10 with pgbarman via ssh/rsync in ubuntu 18.04</a>
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<a href="/post/pgbarman-in-ubuntu-1804-postgresql-10/">[筆記] 在Ubuntu 18.04 下 透過 pgbarman streaming backup 備份 postgresql 10/ backup postgresql 10 with pgbarman straming backup in ubuntu 18.04</a>
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