Connect to ZooKeeper image container and run zookeeper commands - docker

Question

I am running ZooKeeper image on Docker via docker-compose.
My files are:
--repo
----script.zk (contains zookeeper script commands such as `create`
----docker-compose.yaml
----Dockerfile.zookeeper
----zoo.cfg
docker-compose.yaml contains names and properties:
services:
zoo1:
restart: always
hostname: zoo1
container_name: zoo1
build:
context: .
dockerfile: Dockerfile.zookeeper
volumes:
- $PWD/kyc_zookeeper.cfg:/conf/zoo.cfg
ports:
- 2181:2181
environment:
.... and two more nodes
Dockerfile.zookeeper currently contains only image
FROM zookeeper:3.4
Locally I can run zkCli.sh and communicate with zookeeper, but i wish to do it automatically when Dockerfile.zookeeper runs.
do I need to create a container with a vm, install zookeeper and copy the zkCli.sh into the container in order to run commands?
Or is it possible to run zookeeper commands via Dockerfile?
I've tried too attach to the container and using CMD in dockerfile but it's not working.
any idea how I can do it?
Thank you

Answer 1

In order to resolve that I wrote bash script, who gets zookeeper host and a zookeeper script (file with zookeeper commands line-by-line)
and run all the commands on the remote docker who contains zookeeper image:
config_script_file="$2"
zookeeper_host_url="$1"
#Retrieve all commands from file
TMPVAR=""
while read -r line
do
if [ -z "$TMPVAR" ]; then
TMPVAR="$line"
else
TMPVAR="$TMPVAR\n$line"
fi
done < "$config_script_file"
#Run ZooKeeper commands on remote machine
docker exec -i $zookeeper_host_url bash << EOF
./bin/zkCli.sh -server localhost:2181
$(echo -e ${TMPVAR})
quit
exit
EOF
example of a zookeeper script:
create /x 1
create /y 2
Usage:
./zkCliHelper.sh <zookeeper_url> <script.zk file>