thelabdude commented on a change in pull request #1769: URL: https://github.com/apache/lucene-solr/pull/1769#discussion_r479380781
########## File path: solr/docker/docs/docker-networking.md ########## @@ -0,0 +1,249 @@ +Example of Zookeeper and Solr cluster with Docker networking +------------------------------------------------------------ + +_Note: this article dates from Jan 2016. While this approach would still work, in Jan 2019 this would typically done with Docker cluster and orchestration tools like Kubernetes. See for example [this blog post](https://lucidworks.com/2019/02/07/running-solr-on-kubernetes-part-1/)._ + +In this example I'll create a cluster with 3 ZooKeeper nodes and 3 Solr nodes, distributed over 3 machines (trinity10, trinity20, trinity30). +I'll use an overlay network, specify fixed IP addresses when creating containers, and I'll pass in explicit `/etc/hosts` entries to make sure they are available even when nodes are down. +I won't show the configuration of the key-value store to configuration to enable networking, see [the docs](https://docs.docker.com/engine/userguide/networking/get-started-overlay/) for that. +I'll not use Docker Swarm in this example, but specifically place and configure containers where I want them by ssh'ing into the appropriate Docker host. + +To make this example easier to understand I'll just use shell commands. +For actual use you may want to use a fancier deployment tool like [Fabric](http://www.fabfile.org). + +Note: this example requires Docker 1.10. + +I'll run these commands from the first machine, trinity10. + +Create a network named "netzksolr" for this cluster. The `--ip-range` specifies the range of +addresses to use for containers, whereas the `--subnet` specifies all possible addresses in this +network. So effectively, addresses in the subnet but outside the range are reserved for containers +that specifically use the `--ip` option. + +``` +docker network create --driver=overlay --subnet 192.168.22.0/24 --ip-range=192.168.22.128/25 netzksolr +``` + +As a simple test, check the automatic assignment and specific assignment work: + +``` +mak@trinity10:~$ docker run -i --rm --net=netzksolr busybox ip -4 addr show eth0 | grep inet Review comment: let's remove `mak@trinity10:~$` from the commands ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
