fix ambari

ambari/Dockerfile

@@ -11,7 +11,7 @@ ENV JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
 
 RUN set -xe \
     && apt-get update \
-    && apt-get install -y curl gnupg libpostgresql-jdbc-java openjdk-8-jdk \
+    && apt-get install -y curl gnupg libpostgresql-jdbc-java openjdk-8-jdk openssh-client \
     && curl -sSL ${AMBARI_SOURCE} > /etc/apt/sources.list.d/ambari.list \
     && apt-key adv --recv-keys --keyserver keyserver.ubuntu.com B9733A7A07513CAD \
     && apt-get update \
@@ -23,4 +23,7 @@ VOLUME /etc/ambari-server/conf
 
 EXPOSE 8080
 
-CMD ["sleep", "inf"]
+CMD set -ex \
+    && ambari-server start \
+    && sleep 5 \
+    && tail --pid=$(cat /var/run/ambari-server/ambari-server.pid) -f /var/log/ambari-server/ambari-server.log

ambari/README.md

@@ -3,17 +3,15 @@ ambari
 
 The [Apache Ambari][1] project is aimed at making Hadoop management simpler by
 developing software for provisioning, managing, and monitoring Apache Hadoop
-clusters. Ambari provides an intuitive, easy-to-use Hadoop management web UI
+clusters. [Ambari][2] provides an intuitive, easy-to-use Hadoop management web UI
 backed by its RESTful APIs.
 
-Make sure that ambari-server is reachable by ambari-agents.
+Make sure that ambari-server is reachable by ambari-agents via DNS.
 
 ## Up and Running
 
 ```bash
-$ docker-compose up -d
-
-$ docker-compose exec ambari bash
+$ docker-compose run --rm server bash
 >>> ambari-server setup
 Customize user account for ambari-server daemon [y/n] (n)?
 Do you want to change Oracle JDK [y/n] (n)?
@@ -30,12 +28,12 @@ Proceed with configuring remote database connection properties [y/n] (y)?
 CREATE TABLE ...
 CREATE INDEX ...
 
-$ docker-compose exec ambari ambari-server start
-Waiting for server start........................
-Server started listening on 8080
-Ambari Server 'start' completed successfully.
+$ docker-compose up -d
+Starting ambari_postgres_1 ... done
+Starting ambari_server_1 ... done
 
 $ curl http://localhost:8080/
 ```
 
 [1]: https://ambari.apache.org/
+[2]: https://docs.cloudera.com/HDPDocuments/Ambari/Ambari-2.7.4.0/index.html

ambari/docker-compose.yml

@@ -2,7 +2,7 @@ version: "3.7"
 
 services:
 
-  ambari:
+  server:
     image: vimagick/ambari
     hostname: ambari-server
     ports:
@@ -11,6 +11,7 @@ services:
       - "8441:8441"
     volumes:
       - ./data/ambari:/etc/ambari-server/conf
+      - ./data/log:/var/log/ambari-server
     extra_hosts:
       - ambari-agent1:172.16.1.101
       - ambari-agent2:172.16.1.102