This post is a combination of information gathered from perusing the Docker forums, Github issues, Stack Overflow and Docker docs. Note: If you have multiple applications, just bind to a specific address and follow the same steps for all applications: docker run -p 192.100.200.1:80:80 nginx You should be able to access it now at nginx.local. Sudo vi /etc/hosts and add a line for your service, for example: 172.17.0.4 nginx.local Start the container docker run -d -p 80:80 nginxĪdd the alias to the loopback0 interface: sudo ifconfig lo0 alias 172.17.0.4 Simply publishing the ports is the easiest route to go, but if you can’t mess around with ports and are facing port conflicts, do the following: OpenVPN by OpenVPN to access internal Docker networks from the host machine.Docker for Mac host bridge by tuntap to add a tap interface to the Docker VM for routing traffic back and forth between the containers and the host machine.There are a few interesting hacks that I’ve yet to try, but that are worth taking a look at: The most recent solution outlined in the docs recommends the following, from version 17.06 onwards:Ĭonnect to the special Mac-only DNS name which will resolve to the internal IP address used by the host. The host can be accessed from the container using the address 192.168.65.1.Īs far as I know this is the address of the VM’s eth0 interface, but it isn’t very well documented (or documented at all, in that case). You can use any unused IP address for this, but using the container IP is a personal preference of mine for easily keeping tabs. It’s a quick and easy option and works well for most use cases I’ve come across. The most reliable solution I’ve come across so far is to alias to the loopback 0 interface: sudo ifconfig lo0 alias $CONTAINER_IP Add the container IP to the lo0 interface.Although this produces the expected results it’s not an optimal solution, given the possibility of constantly changing IP addresses, or of no connection at all. Connecting from a container to the hostĪttempting to connect to the host’s en0 interface address was the first breakthrough we had. In summary, this means it’s pretty much impossible to directly reach a container via its internal address, while containers cannot access services on the host. The VM uses VPNKit for exposing container ports to localhost, but the network settings and adapters are not configurable, meaning that containers cannot be accessed via their IPs and there is no network interface which bridges between the physical machine and the virtual machine. The problemĭocker for Mac uses Hyperkit to run a xhyve VM for the Docker daemon. It wasn’t the first time I had experienced service-container communication issues and a huge hint was of course the fact that this seemed to work seamlessly on Linux.Īfter many headaches, investigation, trial and error here are a few solutions I’ve gathered and tested that could be of help to you too. Producers and consumers could be started easily from within the containers and communicate between themselves at that level.Īs soon as I attempted to establish a connection between the local UPS instance and the Kafka broker, however, all communication seemed to come to a standstill.Īlthough the application could connect to the broker on its published port and the topics were being created, the messages sent from the UPS were not being properly published and the consumer wasn’t reading anything back. The most straightforward and uncomplicated solution was running the UPS locally, while Zookeeper and the Kafka broker would run in two separate Docker containers.įrom the very beginning I ran into loads of issues. When Google Summer of Code first began, one of our first tasks was describing the steps for the required Kafka-Zookeeper setup. usr/bin/docker run -shm-size=512m -d -restart=always -e LANG=en_US.UTF-8 -e RAILS_ENV=production -e UNICORN_WORKERS=8 -e UNICORN_SIDEKIQS=1 -e RUBY_GLOBAL_METHOD_CACHE_SIZE=131072 -e RUBY_GC_HEAP_GROWTH_MAX_SLOTS=40000 -e RUBY_GC_HEAP_INIT_SLOTS=400000 -e RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR=1.5 -e DISCOURSE_DB_SOCKET= -e DISCOURSE_DB_HOST=10.201.0.116 -e DISCOURSE_DB_PORT=5432 -e LC_ALL=en_US.UTF-8 -e LANGUAGE=en_US.UTF-8 -e DISCOURSE_HOSTNAME=10.201.0.115 -e -e DISCOURSE_SMTP_ADDRESS= for Mac networking ←Home Subscribe Docker for Mac networking
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |