adoroszlai commented on issue #238: HDDS-2588. Consolidate compose environments URL: https://github.com/apache/hadoop-ozone/pull/238#issuecomment-560268499 Changes in last two commits besides README update: 1. fix `freon-*.yaml`: * versions need to match other yamls * monitoring config is required for getting Freon spans 2. set `safemode.min.datanode` and `ozone.replication` to value of `OZONE_REPLICATION_FACTOR` environment variable 3. add `run.sh` to make startup simpler (`--scale` datanodes based on `OZONE_REPLICATION_FACTOR`) So `docker-compose up` without `--scale` still starts a cluster with 1 datanode, but `ozone sh key put` works OK, whereas previously it required explicit `-r ONE`. And getting a 3-datanode cluster is as simple as `OZONE_REPLICATION_FACTOR=3 ./run.sh`.
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