add zookeeper

README.md

@@ -263,6 +263,7 @@ A collection of delicious docker recipes.
     - [x] standalone-firefox
 - [x] tutum/builder
 - [x] wekanteam/wekan
+- [x] zookeeper
 
 ## auto-completion
 

zookeeper/README.md

@@ -0,0 +1,40 @@
+zookeeper
+=========
+
+![](http://zookeeper.apache.org/images/zookeeper_small.gif)
+
+Apache [ZooKeeper][1] is an effort to develop and maintain an open-source server
+which enables highly reliable distributed coordination.
+
+
+## docker-compose.yml
+
+```yaml
+zookeeper:
+  image: zookeeper
+  ports:
+    - "2181:2181"
+  volumes:
+    - ./data:/data
+    - ./datalog:/datalog
+  restart: always
+```
+
+## Standalone Mode
+
+```bash
+$ docker-compose up -d
+$ docker-compose exec zookeeper zkCli.sh
+>>> help
+>>> create /hello world
+>>> get /hello
+>>> delete /hello
+>>> quit
+```
+
+Click [this][2] to learn more.
+
+## Cluster Mode [TODO]
+
+[1]: http://zookeeper.apache.org/
+[2]: https://zookeeper.apache.org/doc/trunk/zookeeperStarted.html

zookeeper/arm/Dockerfile

@@ -0,0 +1,59 @@
+#
+# Dockerfile for zookeeper-arm
+#
+
+FROM easypi/alpine-arm
+MAINTAINER EasyPi Software Foundation
+
+# Install required packages
+RUN apk add --no-cache \
+    bash \
+    openjdk8-jre \
+    su-exec
+
+ENV ZOO_USER=zookeeper \
+    ZOO_CONF_DIR=/conf \
+    ZOO_DATA_DIR=/data \
+    ZOO_DATA_LOG_DIR=/datalog \
+    ZOO_PORT=2181 \
+    ZOO_TICK_TIME=2000 \
+    ZOO_INIT_LIMIT=5 \
+    ZOO_SYNC_LIMIT=2 \
+    ZOO_MAX_CLIENT_CNXNS=60
+
+# Add a user and make dirs
+RUN set -ex; \
+    adduser -D "$ZOO_USER"; \
+    mkdir -p "$ZOO_DATA_LOG_DIR" "$ZOO_DATA_DIR" "$ZOO_CONF_DIR"; \
+    chown "$ZOO_USER:$ZOO_USER" "$ZOO_DATA_LOG_DIR" "$ZOO_DATA_DIR" "$ZOO_CONF_DIR"
+
+ARG GPG_KEY=C823E3E5B12AF29C67F81976F5CECB3CB5E9BD2D
+ARG DISTRO_NAME=zookeeper-3.4.10
+
+# Download Apache Zookeeper, verify its PGP signature, untar and clean up
+RUN set -ex; \
+    apk add --no-cache --virtual .build-deps \
+        gnupg wget; \
+    wget -q "http://www.apache.org/dist/zookeeper/$DISTRO_NAME/$DISTRO_NAME.tar.gz"; \
+    wget -q "http://www.apache.org/dist/zookeeper/$DISTRO_NAME/$DISTRO_NAME.tar.gz.asc"; \
+    export GNUPGHOME="$(mktemp -d)"; \
+    gpg --keyserver ha.pool.sks-keyservers.net --recv-key "$GPG_KEY" || \
+    gpg --keyserver pgp.mit.edu --recv-keys "$GPG_KEY" || \
+    gpg --keyserver keyserver.pgp.com --recv-keys "$GPG_KEY"; \
+    gpg --batch --verify "$DISTRO_NAME.tar.gz.asc" "$DISTRO_NAME.tar.gz"; \
+    tar -xzf "$DISTRO_NAME.tar.gz"; \
+    mv "$DISTRO_NAME/conf/"* "$ZOO_CONF_DIR"; \
+    rm -rf "$GNUPGHOME" "$DISTRO_NAME.tar.gz" "$DISTRO_NAME.tar.gz.asc"; \
+    apk del .build-deps
+
+WORKDIR $DISTRO_NAME
+VOLUME ["$ZOO_DATA_DIR", "$ZOO_DATA_LOG_DIR"]
+
+EXPOSE $ZOO_PORT 2888 3888
+
+ENV PATH=$PATH:/$DISTRO_NAME/bin \
+    ZOOCFGDIR=$ZOO_CONF_DIR
+
+COPY docker-entrypoint.sh /
+ENTRYPOINT ["/docker-entrypoint.sh"]
+CMD ["zkServer.sh", "start-foreground"]

zookeeper/arm/docker-compose-cluster.yml

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+zookeeper:
+  image: easypi/zookeeper-arm
+  volumes:
+    - ./data:/data
+    - ./datalog:/datalog
+  environment:
+    - ZOO_MY_ID=1
+    - ZOO_SERVERS=server.1=192.168.1.106:2888:3888
+                  server.2=192.168.1.107:2888:3888
+                  server.3=192.168.1.108:2888:3888
+  net: host
+  restart: always

zookeeper/arm/docker-compose.yml

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+zookeeper:
+  image: easypi/zookeeper-arm
+  ports:
+    - "2181:2181"
+  volumes:
+    - ./data:/data
+    - ./datalog:/datalog
+  restart: always

zookeeper/arm/docker-entrypoint.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+set -e
+
+# Allow the container to be started with `--user`
+if [ "$1" = 'zkServer.sh' -a "$(id -u)" = '0' ]; then
+    chown -R "$ZOO_USER" "$ZOO_DATA_DIR" "$ZOO_DATA_LOG_DIR"
+    exec su-exec "$ZOO_USER" "$0" "$@"
+fi
+
+# Generate the config only if it doesn't exist
+if [ ! -f "$ZOO_CONF_DIR/zoo.cfg" ]; then
+    CONFIG="$ZOO_CONF_DIR/zoo.cfg"
+
+    echo "clientPort=$ZOO_PORT" >> "$CONFIG"
+    echo "dataDir=$ZOO_DATA_DIR" >> "$CONFIG"
+    echo "dataLogDir=$ZOO_DATA_LOG_DIR" >> "$CONFIG"
+
+    echo "tickTime=$ZOO_TICK_TIME" >> "$CONFIG"
+    echo "initLimit=$ZOO_INIT_LIMIT" >> "$CONFIG"
+    echo "syncLimit=$ZOO_SYNC_LIMIT" >> "$CONFIG"
+
+    echo "maxClientCnxns=$ZOO_MAX_CLIENT_CNXNS" >> "$CONFIG"
+
+    for server in $ZOO_SERVERS; do
+        echo "$server" >> "$CONFIG"
+    done
+fi
+
+# Write myid only if it doesn't exist
+if [ ! -f "$ZOO_DATA_DIR/myid" ]; then
+    echo "${ZOO_MY_ID:-1}" > "$ZOO_DATA_DIR/myid"
+fi
+
+exec "$@"

zookeeper/docker-compose.yml

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+zookeeper:
+  image: zookeeper
+  ports:
+    - "2181:2181"
+  volumes:
+    - ./data:/data
+    - ./datalog:/datalog
+  restart: always