#11 gid and uid as a variable as well

Author: FRosner

README.md

@@ -14,8 +14,10 @@ You can either start the image directly with Docker, or use the [Nomad-Docker-Wr
 docker run -p 8080:8080 \
   -e ZEPPELIN_SPARK_MASTER="local[*]" \
   -e ZEPPELIN_PASSWORD="secret" \
-  -e ZEPPELIN_PROCESS_USER="zeppelinu" \
-  -e ZEPPELIN_PROCESS_GROUP="zeppeling" \
+  -e ZEPPELIN_PROCESS_USER_NAME="zeppelinu" \
+  -e ZEPPELIN_PROCESS_USER_ID=12345 \
+  -e ZEPPELIN_PROCESS_GROUP_NAME="zeppeling" \
+  -e ZEPPELIN_PROCESS_GROUP_ID=12340 \
   -v $(pwd)/notebooks:/usr/local/zeppelin/notebooks \
   frosner/zeppelin
 ```
@@ -28,5 +30,7 @@ The docker image requires some environment variables to be set. They are used to
 | -------- | ----------- |
 | `ZEPPELIN_SPARK_MASTER` | URL of the Spark master that Zeppelin should use. |
 | `ZEPPELIN_PASSWORD` | Password to use for authenticating as `zeppelin` user on the UI. |
-| `ZEPPELIN_PROCESS_USER` | User to execute the Zeppelin process as. |
-| `ZEPPELIN_PROCESS_GROUP` | Group to assign to the Zeppelin user. |
+| `ZEPPELIN_PROCESS_USER_NAME` | User name to execute the Zeppelin process as. |
+| `ZEPPELIN_PROCESS_USER_ID` | User ID to execute the Zeppelin process as. |
+| `ZEPPELIN_PROCESS_GROUP_NAME` | Group name to assign to the Zeppelin user. |
+| `ZEPPELIN_PROCESS_GROUP_ID` | Group ID to assign to the Zeppelin user. |

start-zeppelin.sh

@@ -1,30 +1,30 @@
 #!/bin/bash
 cd /usr/local/zeppelin
 
-# fill configuration templates
+echo "Filling Zeppelin configuration templates"
 cat conf/interpreter.json.template | envsubst > conf/interpreter.json
 cat conf/zeppelin-env.sh.template | envsubst > conf/zeppelin-env.sh
 cat conf/zeppelin-site.xml.template | envsubst > conf/zeppelin-site.xml
 cat conf/shiro.ini.template | envsubst > conf/shiro.ini
 
 # add zeppelin group if not exists
-if getent group $ZEPPELIN_PROCESS_GROUP; then
-  echo "Group $ZEPPELIN_PROCESS_GROUP already exists"
+if getent group $ZEPPELIN_PROCESS_GROUP_NAME; then
+  echo "Group $ZEPPELIN_PROCESS_GROUP_NAME already exists"
 else
-  echo "Group $ZEPPELIN_PROCESS_GROUP does not exist, creating it"
-  addgroup $ZEPPELIN_PROCESS_GROUP
+  echo "Group $ZEPPELIN_PROCESS_GROUP_NAME does not exist, creating it with gid=$ZEPPELIN_PROCESS_GROUP_ID"
+  addgroup -gid $ZEPPELIN_PROCESS_GROUP_ID $ZEPPELIN_PROCESS_GROUP_NAME
 fi
 
 # add zeppelin user if not exists
-if id -u $ZEPPELIN_PROCESS_USER 2>/dev/null; then
-  echo "User $ZEPPELIN_PROCESS_USER already exists"
+if id -u $ZEPPELIN_PROCESS_USER_NAME 2>/dev/null; then
+  echo "User $ZEPPELIN_PROCESS_USER_NAME already exists"
 else
-  echo "User $ZEPPELIN_PROCESS_USER does not exist, creating it"
-  adduser $ZEPPELIN_PROCESS_USER --gecos "" --ingroup $ZEPPELIN_PROCESS_GROUP --disabled-login --disabled-password
+  echo "User $ZEPPELIN_PROCESS_USER_NAME does not exist, creating it with uid=$ZEPPELIN_PROCESS_USER_ID"
+  adduser $ZEPPELIN_PROCESS_USER_NAME --uid $ZEPPELIN_PROCESS_USER_ID --gecos "" --ingroup $ZEPPELIN_PROCESS_GROUP_NAME --disabled-login --disabled-password
 fi 
 
 # adjust ownership of the zeppelin folder
-chown -R $ZEPPELIN_PROCESS_USER *
-chgrp -R $ZEPPELIN_PROCESS_GROUP *
+chown -R $ZEPPELIN_PROCESS_USER_NAME *
+chgrp -R $ZEPPELIN_PROCESS_GROUP_NAME *
 
-exec sudo -u $ZEPPELIN_PROCESS_USER bin/zeppelin.sh
+exec sudo -u $ZEPPELIN_PROCESS_USER_NAME bin/zeppelin.sh