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colmmacc's profile
Colm MacCárthaigh
Colm MacCárthaigh
Colm MacCárthaigh
@colmmacc

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Colm MacCárthaigh

@colmmacc

AWS, Apache, Crypto, Irish Music, Haiku, Photography

Seattle
notesfromthesound.com
Joined April 2008

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    1. Nathan Peck‏ @nathankpeck 8 Mar 2019
      • Report Tweet
      • Report NetzDG Violation

      Nathan Peck Retweeted Abby Fuller

      Oooh yeah I forgot to mention "the timeout value between sigterm and sigkill on a per-container basis" This is super useful if you want to close connections gracefully in a web server to let existing connections complete when rolling out an update to your applicationhttps://twitter.com/abbyfuller/status/1104086145934123008 …

      Nathan Peck added,

      Abby Fuller @abbyfuller
      more goodies for #aws #ecs! you can now control the order in which your containers start and stop, and the timeout value between sigterm and sigkill on a per-container basis! https://twitter.com/nickcoult/status/1103836780879523841 …
      2 replies 2 retweets 27 likes
      Show this thread
    2. Nathan Peck‏ @nathankpeck 8 Mar 2019
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      Here is how that works in Node.js I can trap the "SIGTERM" signal that Docker sends to my container when ECS is shutting down the task and respond by closing the server. This keeps existing connections and lets them end gracefully while halting accepting any new connectionspic.twitter.com/oa5qRQhDkZ

      3 replies 4 retweets 17 likes
      Show this thread
    3. Colm MacCárthaigh‏ @colmmacc 8 Mar 2019
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      Replying to @nathankpeck

      This put a real smile on my face! Adding graceful "stop listening, but keep going" shutdown to Apache was one of my gnarliest contributions. Many didn't even believe it could be done! It ended up being in my nomination statement to become an ASF member. </braggingandIdontcare>

      2 replies 0 retweets 17 likes
    4. Justin Liew‏ @justin_liew 8 Mar 2019
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      Replying to @colmmacc @nathankpeck

      We used this sort of pattern when using containers for game servers. We captured the SIGTERM, set a timeout to the length of a typical game session, then stopped matchmaking users to that server, then shut it down once existing players left.

      1 reply 0 retweets 3 likes
      Colm MacCárthaigh‏ @colmmacc 8 Mar 2019
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      Replying to @justin_liew @nathankpeck

      Funny story: on one of the SunOS platforms we ran out of signals and had to overload SIGWINCH. Apache would shutdown if the admin resized their terminal.

      7:43 PM - 8 Mar 2019 from Seattle, WA
      • 8 Likes
      • Jake Rullman Toby Heighway tinyrobots Sam Peter Stephens ☕ 🚀 Paul Maddox AlanC Justin Liew
      1 reply 0 retweets 8 likes
        1. Nathan Peck‏ @nathankpeck 8 Mar 2019
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          Replying to @colmmacc @justin_liew

          Oh god that sounds incredibly hacky 😂

          0 replies 0 retweets 1 like
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