ETCD Scheduler for DC/OS

Etcd scheduler for DC/OS

• etcd client endpoint: client.<etcd-frameworkname>.l4lb.thisdcos.directory:2379
• If service is running under the sub group, endpoint is: client.<subgroup><servicename>.l4lb.thisdcos.directory:2379

How to use

Build

$ cd frameworks/etcd/
$ ./build.sh

Use Universe

• Serve frameworks/etcd/build/distributions/*.zip files in httpd.
• Serve sdk/bootstrap/bootstrap file in httpd.
• Copy frameworks/etcd/universe/* to universe/repo/B/beta-etcd/0/*
• Replace file assets in resource.json with:

    {
      "jre-tar-gz": "https://downloads.mesosphere.com/java/jre-8u131-linux-x64-jce-unlimited.tar.gz",
      "libmesos-bundle-tar-gz": "https://downloads.mesosphere.io/libmesos-bundle/libmesos-bundle-1.10-1.4-63e0814.tar.gz"
    }

• Replace bootstrap asset in resource.json with proper location.

• Replcae scheduler-zip asset in resource.json with proper location.

• Replcae executor-zip asset in resource.json with proper location.

• Build local universe.

Use pre-built docker image

• Use minyk/dcos-etcd:v0.1 from Docker hub, and marathon.json(frameworks/etcd/docker/marathon.json).
• See also marathon-subgroup.json
• Dockerfile:

FROM centos:7.3.1611

RUN yum install -y unzip tar && mkdir -p /usr/share/dcos

COPY etcd-scheduler.zip /usr/local/dcos/etcd-scheduler.zip
COPY executor.zip /usr/local/dcos/executor.zip
COPY bootstrap.zip /usr/local/dcos/bootstrap.zip
COPY libmesos-bundle-1.10-1.4-63e0814.tar.gz /usr/local/dcos/libmesos-bundle-1.10-1.4-63e0814.tar.gz
COPY jre-8u131-linux-x64-jce-unlimited.tar.gz /usr/local/dcos/jre-8u131-linux-x64-jce-unlimited.tar.gz
COPY entrypoint.sh /entrypoint.sh

ENV JAVA_URI http://api.etcd.marathon.l4lb.thisdcos.directory/v1/files/jre-8u131-linux-x64-jce-unlimited.tar.gz
ENV LIBMESOS_URI http://api.etcd.marathon.l4lb.thisdcos.directory/v1/files/libmesos-bundle-1.10-1.4-63e0814.tar.gz
ENV EXECUTOR_URI http://api.etcd.marathon.l4lb.thisdcos.directory/v1/files/executor.zip
ENV BOOTSTRAP_URI http://api.etcd.marathon.l4lb.thisdcos.directory/v1/files/bootstrap.zip

ENTRYPOINT ["/entrypoint.sh"]

Limitations

• ETCD Docker image is static: quay.io/coreos/etcd:v3.2
• ETCD node count is static: 3
• Scheduler does not provide cli extension.
• Scheduler does not provide endpoint to etcd. You can find etcd at etcd-0-node.<framework-name>.autoip.dcos.thisdcos.directory.
• Scheduler does not provide a way to configure etcd servers.