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  1. Core Server
  2. SERVER-26600

mongod should fail to start on macOS when it can't listen port on all interfaces

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Minor - P4 Minor - P4
    • None
    • Affects Version/s: None
    • Component/s: Networking
    • Labels:
      None
    • Fully Compatible
    • OS X
    • Platforms 2016-10-31

      On macOS you can have two different mongod's listening on same port: one with a specific IP addresses to bind to and second one with an empty list. Can't reproduce this behavior on Linux.

      $ uname -mprs
Darwin 16.0.0 x86_64 i386
$ ifconfig|grep 'inet '
	inet 127.0.0.1 netmask 0xff000000
	inet 10.5.17.205 netmask 0xffff0000 broadcast 10.5.255.255
	inet 10.211.55.2 netmask 0xffffff00 broadcast 10.211.55.255
	inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
$ ps -p $(pgrep mongod)
  PID TTY           TIME CMD
90084 ??         0:04.49 /usr/local/opt/mongodb/bin/mongod --config /usr/local/etc/mongod.conf
90613 ttys006    0:03.70 /usr/local/m/versions/3.4.0-rc0/bin/mongod
$ lsof -i :27017 -a -sTCP:LISTEN
COMMAND   PID USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
mongod  90084  abr    6u  IPv4 0x11850b417b6b6f43      0t0  TCP localhost:27017 (LISTEN)
mongod  90084  abr    8u  IPv4 0x11850b4177f2b64b      0t0  TCP 10.211.55.2:27017 (LISTEN)
mongod  90613  abr    6u  IPv4 0x11850b417dcb864b      0t0  TCP *:27017 (LISTEN)
$ grep bindIp /usr/local/etc/mongod.conf
  bindIp: 127.0.0.1,10.211.55.2

      There are no warnings or errors for mongod running with default configuration (PID 90613):

      2016-10-12T08:38:33.061-0700 I NETWORK  [thread1] waiting for connections on port 27017

      $ mongo --port 27017
MongoDB shell version v3.4.0-rc0
connecting to: mongodb://127.0.0.1:27017/
MongoDB server version: 3.2.10
WARNING: shell and server versions do not match
>
bye
$ mongo --port 27017 --host 10.37.129.2
MongoDB shell version v3.4.0-rc0
connecting to: mongodb://10.37.129.2:27017/
MongoDB server version: 3.4.0-rc0
Server has startup warnings:
2016-10-12T08:38:32.868-0700 I CONTROL  [initandlisten]
2016-10-12T08:38:32.868-0700 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
2016-10-12T08:38:32.868-0700 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
2016-10-12T08:38:32.869-0700 I CONTROL  [initandlisten]
>

            Assignee:
            mira.carey@mongodb.com Mira Carey
            Reporter:
            andrey.brindeyev@mongodb.com Andrey Brindeyev
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              Created:
              Updated:
              Resolved: