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unicorn-worker-killer の設定例

Last updated at Posted at 2018-01-10

Gemfile

gem 'unicorn-worker-killer' を追記して bundle install

設定例

config.ru
require 'unicorn/worker_killer'
use Unicorn::WorkerKiller::MaxRequests, 3072, 4096, true #ワーカーが処理したリクエストの数に基づいて、Unicornワーカーを自動的に再起動します。 trueオプションでunicorn.stderr.logにログを出力します。
use Unicorn::WorkerKiller::Oom, (192*(1024**2)), (256*(1024**2)) # メモリサイズに基づいてUnicornワーカーを自動的に再起動します。


require ::File.expand_path('../config/environment', __FILE__) # この記述の上に書くこと!
run Rails.application

こんなログが出ます

INFO -- : #<Unicorn::HttpServer:0x0055ad705e4c78>: worker (pid: 3057) has 1 left before being killed
WARN -- : #<Unicorn::HttpServer:0x0055ad705e4c78>: worker (pid: 3057) exceeds max number of requests (limit: 10)
WARN -- : Unicorn::WorkerKiller send SIGQUIT (pid: 3057) alive: 213 sec (trial 1)
INFO -- : reaped #<Process::Status: pid 3057 exit 0> worker=3
INFO -- : worker=3 ready

参考

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