MongoDB bind() failed errno:99 Cannot assign requested address for socket

Review the server environment, we need to allow Server B to access the Server A MongoDB database.

Server A - MongoDB server
Private IP - 192.168.162.129 / 17
Server B - Application Server
Private IP - 192.168.204.205 / 17

Update the bind_ip, but unable to start mongod process anymore.

#$ vim /etc/mongod.conf
# Listen to local interface only. Comment out to listen on all interfaces.
bind_ip = 127.0.0.1, 192.168.162.129, 192.168.204.205

E NETWORK  [initandlisten] listen(): bind() failed errno:99 Cannot assign requested address for socket: 192.168.204.205:27017
E STORAGE  [initandlisten] Failed to set up sockets during startup.

Solution

The bind_ip is for “local interface only”, put 192.168.162.129 (Server A private ip) is enough for clients (like Server B) on the same LAN to access.

#$ vim /etc/mongod.conf
# Listen to local interface only. Comment out to listen on all interfaces.
bind_ip = 127.0.0.1, 192.168.162.129

References

1. MongoDB – Allow remote access
2. MongoDB – bind_ip documentation