我正在嘗試使用 Heroku nginx buildpack，我的問題是 nginx 不會將 sigterm 處理為正常關閉，因此我正在嘗試修改運行 nginx 的 bash 腳本來做到這一點。我也想了解更多關于 bash 的資訊。
這是腳本：
#!/usr/bin/env bash
psmgr=/tmp/nginx-buildpack-wait
rm -f $psmgr
mkfifo $psmgr
# Evaluate config to get $PORT
erb config/nginx.conf.erb > config/nginx.conf
n=1
while getopts :f option ${@:1:2}
do
case "${option}"
in
f) FORCE=$OPTIND; n=$((n 1));;
esac
done
# Initialize log directory.
mkdir -p logs/nginx
touch logs/nginx/access.log logs/nginx/error.log
echo 'buildpack=nginx at=logs-initialized'
# Start log redirection.
(
# Redirect nginx logs to stdout.
tail -qF -n 0 logs/nginx/*.log
echo 'logs' >$psmgr
) &
# Start App Server
(
# Take the command passed to this bin and start it.
# E.g. bin/start-nginx bundle exec unicorn -c config/unicorn.rb
COMMAND=${@:$n}
echo "buildpack=nginx at=start-app cmd=$COMMAND"
$COMMAND
echo 'app' >$psmgr
) &
if [[ -z "$FORCE" ]]
then
FILE="/tmp/app-initialized"
# We block on app-initialized so that when nginx binds to $PORT
# are app is ready for traffic.
while [[ ! -f "$FILE" ]]
do
echo 'buildpack=nginx at=app-initialization'
sleep 1
done
echo 'buildpack=nginx at=app-initialized'
fi
# Start nginx
(
# We expect nginx to run in foreground.
# We also expect a socket to be at /tmp/nginx.socket.
echo 'buildpack=nginx at=nginx-start'
bin/nginx -p . -c config/nginx.conf
echo 'nginx' >$psmgr
) &
# This read will block the process waiting on a msg to be put into the fifo.
# If any of the processes defined above should exit,
# a msg will be put into the fifo causing the read operation
# to un-block. The process putting the msg into the fifo
# will use it's process name as a msg so that we can print the offending
# process to stdout.
read exit_process <$psmgr
echo "buildpack=nginx at=exit process=$exit_process"
exit 1
目的是以節點服務器和 nginx 應該關閉的方式處理 SIGTERM 信號，使用此腳本，一切都會立即被殺死。我的節點服務器正在正確處理信號。
感謝幫助。
編輯 1：我已經修補了 nginx 以使用 SIGTERM 代替 SIGQUIT。我知道我必須捕獲 SIGTERM 以便它不會殺死腳本，但腳本永遠不會退出，它只會在 30 秒后被殺死，這是 Heroku 超時導致行程死亡。
uj5u.com熱心網友回復：
這是我的實作，https://github.com/nenadfilipovic/heroku-buildpack-nginx。它在生產中表現出色。
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