linux - ubuntu:启动( Upstart )mongodb的第二个实例

Question

mongodb 自带的标准 upstart 脚本运行良好:

# Ubuntu upstart file at /etc/init/mongodb.conf

limit nofile 20000 20000

kill timeout 300 # wait 300s between SIGTERM and SIGKILL.

pre-start script
    mkdir -p /var/lib/mongodb/
    mkdir -p /var/log/mongodb/
end script

start on runlevel [2345]
stop on runlevel [06]

script
  ENABLE_MONGODB="yes"
  if [ -f /etc/default/mongodb ]; then . /etc/default/mongodb; fi
  if [ "x$ENABLE_MONGODB" = "xyes" ]; then exec start-stop-daemon --start --quiet --chuid mongodb --exec  /usr/bin/mongod -- --config /etc/mongodb.conf; fi
end script

如果我想运行第二个 mongod 实例，我想我只需复制 /etc/mongodb.conf -> /etc/mongodb2.conf 和 >/etc/init/mongodb.conf -> /etc/init/mongodb2.conf 并更改第一个conf文件中的std端口。然后调整上面的脚本，从新创建的/etc/mongodb2.conf开始。

然后我可以说 start mongodb2 并且服务启动......但它在启动后立即被杀死。为了让两个进程都启动并运行，我应该做些什么改变？

 # Ubuntu upstart file at /etc/init/mongodb2.conf

limit nofile 20000 20000

kill timeout 300 # wait 300s between SIGTERM and SIGKILL.

pre-start script
    mkdir -p /var/lib/mongodb2/
    mkdir -p /var/log/mongodb2/
end script

start on runlevel [2345]
stop on runlevel [06]

script
  ENABLE_MONGODB="yes"
  if [ -f /etc/default/mongodb ]; then . /etc/default/mongodb; fi
  if [ "x$ENABLE_MONGODB" = "xyes" ]; then exec start-stop-daemon --start --quiet --chuid mongodb --exec  /usr/bin/mongod -- --config /etc/mongodb2.conf; fi
end script

Answer 1

我无法让“标准” Upstart 脚本工作(如上所述)，所以我将其更改为:

# Ubuntu upstart file at /etc/init/mongodb.conf

limit nofile 20000 20000

kill timeout 300 # wait 300s between SIGTERM and SIGKILL.

pre-start script
    mkdir -p /var/lib/mongodb/
    mkdir -p /var/log/mongodb/
end script

start on runlevel [2345]
stop on runlevel [06]

script

  exec sudo -u mongodb /usr/bin/mongod --config /etc/mongodb.conf

end script

如果您想运行其他 mongodb 实例，只需复制 *.conf 文件并对 /etc/mongodb2.conf 和 /etc/init/mongodb2.conf 进行更改

# Ubuntu upstart file at /etc/init/mongodb2.conf

limit nofile 20000 20000

kill timeout 300 # wait 300s between SIGTERM and SIGKILL.

pre-start script
    mkdir -p /var/lib/mongodb2/
    mkdir -p /var/log/mongodb2/
end script

start on runlevel [2345]
stop on runlevel [06]

script

  exec sudo -u mongodb /usr/bin/mongod --config /etc/mongodb2.conf

end script

我认为唯一不起作用的是 restart mongodb - 你必须 stop 然后再次 start ...