ReplicaSet via mongod.conf in Docker causes Init Issues

Ops and Admin Containers and Orchestration
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2

Use bash script. (bitnami - for example)

#init_replicaset.sh

#!/bin/bash

if mongosh --eval 'rs.status().ok == 1'; then
  echo "Replica set already initialized, skipping."
else
  echo "Initializing replica set..."
  mongosh --eval 'rs.initiate({
  _id: "replicaset",
  members: [
    { _id: 0, host: "mongodb-primary:27017" },
  ]
})'
fi

#docker-compose.yml

    volumes:
      - ./mongod.conf:/opt/bitnami/mongodb/conf/mongod.conf
      - ./init-replicaset.sh:/docker-entrypoint-initdb.d/init-replicaset.sh
      - mongo_primary:/bitnami/mongodb
    entrypoint: [ "bash", "-c",
                  "mongod --config /opt/bitnami/mongodb/conf/mongod.conf & \
                  sleep 3 && /docker-entrypoint-initdb.d/init-replicaset.sh && wait" ]