這腳本啓動RabbitMQ作爲後臺進程(使用'&'),這會導致更新/創建pid文件(請參閱http://www.rabbitmq.com/man/rabbitmqctl.1.man.html下的'wait')。
兔子啓動後,會使用循環來驗證pid是否仍在運行。如果兔子崩潰或手動關閉(在supervisord之外),那麼腳本將以1退出並且supervisord接管。
echo >> ./rmq。txt文件用於調試目的,可以在生產中註釋掉(我用它來監視啓動/關閉/死亡狀態)。
supervisord很高興,因爲它可以看到正在運行的進程,並且EXIT將觸發stop_rmq函數,該函數會調用'rabbitmqctl stop'來進行乾淨關閉。
#!/bin/bash
# Script to manage RMQ with supervisord
# Shut down rmq
function stop_rmq {
echo "Stopping RabbitMQ..."
echo "Stopping RabbitMQ..." >> ./rmq.txt
rabbitmqctl stop
echo "RabbitMQ stopped"
echo "RabbitMQ stopped" >> ./rmq.txt
#exit 0
}
# Set up the trap
#trap stop_rabbit TERM KILL HUP INT SIGTERM SIGKILL SIGHUP SIGINT
trap stop_rmq exit
# Start rmq
echo "Starting RabbitMQ..."
echo "Starting RabbitMQ..." >> ./rmq.txt
# Start Rabbitmq in the background (causes the pid file to be updated)
# Note that the pid file location can be overridden with the rmq 'RABBITMQ_PID_FILE' variable
/usr/sbin/rabbitmq-server &
rabbitmqctl wait /var/lib/rabbitmq/mnesia/[email protected]$HOSTNAME.pid
echo "RabbitMQ Started"
echo "RabbitMQ Started" >> ./rmq.txt
while true; do
#ps $(cat /var/lib/rabbitmq/mnesia/[email protected]$HOSTNAME.pid)
ps -o pid,cmd,etime $(cat /var/lib/rabbitmq/mnesia/[email protected]$HOSTNAME.pid)
if (($? > 0)); then
echo "RabbitMQ Died"
echo "RabbitMQ Died" >> ./rmq.txt
exit 1
fi
#echo "Sleeping..."
sleep 10
done
下面是由腳本生成到supervisord輸出:
[email protected]:/# supervisorctl tail rmq
Starting RabbitMQ...
Waiting for [email protected] ...
pid is 45220 ...
RabbitMQ 3.3.5. Copyright (C) 2007-2014 GoPivotal, Inc.
## ## Licensed under the MPL. See http://www.rabbitmq.com/
## ##
########## Logs: /var/log/rabbitmq/[email protected]
###### ## /var/log/rabbitmq/[email protected]
##########
Starting broker... completed with 0 plugins.
...done.
RabbitMQ Started
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 00:05
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 00:15
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 00:25
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 00:35
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 00:45
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 00:55
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 01:05
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 01:15
PID CMD ELAPSED
45220 /usr/lib/erlang/erts-6.1/bi 01:25
這部分工作對我來說。我用我的最終解決方案創建了一個要點:https://gist.github.com/caioariede/342a583f75467509ad42 – caio
@ caio儘管我的解決方案適用於我,但我應該感謝您的支持。 –