# Fscrawler in docker Exception in thread "main" java.util.NoSuchElementException

**URL:** <https://discuss.elastic.co/t/fscrawler-in-docker-exception-in-thread-main-java-util-nosuchelementexception/330398>\
**Category:** Elasticsearch\
**Tags:** docker\
**Created:** [April 20, 2023, 2:35pm UTC](https://discuss.elastic.co/t/fscrawler-in-docker-exception-in-thread-main-java-util-nosuchelementexception/330398 "2023-04-20T14:35:54Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![lenchester](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@lenchester](https://discuss.elastic.co/u/lenchester)\
**Post date:** [April 20, 2023, 2:35pm UTC](https://discuss.elastic.co/t/fscrawler-in-docker-exception-in-thread-main-java-util-nosuchelementexception/330398/1 "2023-04-20T14:35:54Z")

</div>

Hi I am launching Fscrawler with Elasticsearch and kibana inside docker containers and I am getting following error

```auto
| Exception in thread "main" java.util.NoSuchElementException
fscrawler | at java.base/java.util.Scanner.throwFor(Scanner.java:937)
fscrawler | at java.base/java.util.Scanner.next(Scanner.java:1478)
fscrawler | at fr.pilato.elasticsearch.crawler.fs.cli.FsCrawlerCli.main(FsCrawlerCli.java:254)

```

I have following docker-compose.yml file

```auto
---
version: "2.2"

services:
  setup:
    image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
    user: "0"
    command: >
      bash -c '
        if [x${ELASTIC_PASSWORD} == x]; then
          echo "Set the ELASTIC_PASSWORD environment variable in the .env file";
          exit 1;
        elif [x${KIBANA_PASSWORD} == x]; then
          echo "Set the KIBANA_PASSWORD environment variable in the .env file";
          exit 1;
        fi;
        if [! -f certs/ca.zip]; then
          echo "Creating CA";
          bin/elasticsearch-certutil ca --silent --pem -out config/certs/ca.zip;
          unzip config/certs/ca.zip -d config/certs;
        fi;
        if [! -f certs/certs.zip]; then
          echo "Creating certs";
          echo -ne \
          "instances:\n"\
          " - name: elasticsearch\n"\
          " dns:\n"\
          " - elasticsearch\n"\
          " - localhost\n"\
          " ip:\n"\
          " - 127.0.0.1\n"\
          > config/certs/instances.yml;
          bin/elasticsearch-certutil cert --silent --pem -out config/certs/certs.zip --in config/certs/instances.yml --ca-cert config/certs/ca/ca.crt --ca-key config/certs/ca/ca.key;
          unzip config/certs/certs.zip -d config/certs;
        fi;
        echo "Setting file permissions"
        chown -R root:root config/certs;
        find . -type d -exec chmod 750 \{\} \;;
        find . -type f -exec chmod 640 \{\} \;;
        echo "Waiting for Elasticsearch availability";
        until curl -s --cacert config/certs/ca/ca.crt https://elasticsearch:9200 | grep -q "missing authentication credentials"; do sleep 30; done;
        echo "Setting kibana_system password";
        until curl -s -X POST --cacert config/certs/ca/ca.crt -u elastic:${ELASTIC_PASSWORD} -H "Content-Type: application/json" https://elasticsearch:9200/_security/user/kibana_system/_password -d "{\"password\":\"${KIBANA_PASSWORD}\"}" | grep -q "^{}"; do sleep 10; done;
        echo "All done!";
      '
    healthcheck:
      test: ["CMD-SHELL", "[-f config/certs/elasticsearch/elasticsearch.crt]"]
      interval: 1s
      timeout: 5s
      retries: 120

  elasticsearch:
    depends_on:
      setup:
        condition: service_healthy
    image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
      - esdata:/usr/share/elasticsearch/data
    ports:
      - ${ES_PORT}:9200
    environment:
      - node.name=elasticsearch
      - cluster.name=${CLUSTER_NAME}
      - cluster.initial_master_nodes=elasticsearch
      - ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
      - bootstrap.memory_lock=true
      - xpack.security.enabled=true
      - xpack.security.http.ssl.enabled=true
      - xpack.security.http.ssl.key=certs/elasticsearch/elasticsearch.key
      - xpack.security.http.ssl.certificate=certs/elasticsearch/elasticsearch.crt
      - xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.http.ssl.verification_mode=certificate
      - xpack.security.transport.ssl.enabled=true
      - xpack.security.transport.ssl.key=certs/elasticsearch/elasticsearch.key
      - xpack.security.transport.ssl.certificate=certs/elasticsearch/elasticsearch.crt
      - xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.transport.ssl.verification_mode=certificate
      - xpack.license.self_generated.type=${LICENSE}
    mem_limit: ${MEM_LIMIT}
    ulimits:
      memlock:
        soft: -1
        hard: -1
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
        ]
      interval: 10s
      timeout: 10s
      retries: 120

  kibana:
    depends_on:
      elasticsearch:
        condition: service_healthy
    image: docker.elastic.co/kibana/kibana:${STACK_VERSION}
    volumes:
      - certs:/usr/share/kibana/config/certs
      - kibanadata:/usr/share/kibana/data
    ports:
      - ${KIBANA_PORT}:5601
    environment:
      - SERVERNAME=kibana
      - ELASTICSEARCH_HOSTS=https://elasticsearch:9200
      - ELASTICSEARCH_USERNAME=kibana_system
      - ELASTICSEARCH_PASSWORD=${KIBANA_PASSWORD}
      - ELASTICSEARCH_SSL_CERTIFICATEAUTHORITIES=config/certs/ca/ca.crt
      - ENTERPRISESEARCH_HOST=http://enterprisesearch:${ENTERPRISE_SEARCH_PORT}
    mem_limit: ${MEM_LIMIT}
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "curl -s -I http://localhost:5601 | grep -q 'HTTP/1.1 302 Found'",
        ]
      interval: 10s
      timeout: 10s
      retries: 120

  # FSCrawler
  fscrawler:
    image: dadoonet/fscrawler:${FSCRAWLER_VERSION}
    container_name: fscrawler
    restart: always
    volumes:
      - ../../test-documents/src/main/resources/documents/:/tmp/es:ro
      - ${PWD}/config:/root/.fscrawler
      - ${PWD}/logs:/usr/share/fscrawler/logs
    depends_on:
      elasticsearch:
        condition: service_healthy
    ports:
      - ${FSCRAWLER_PORT}:8080
    command: fscrawler idx --restart --rest

volumes:
  certs:
    driver: local
  esdata:
    driver: local
  kibanadata:
    driver: local

```

Project structure is according docs

```auto
/
├── docker-compose.yml
├── config/
│ ├── idx/
│ ├──_settings.yml
└── logs/
    ├── ...
   

```

my .env

```auto
# FSCrawler Settings
FSCRAWLER_VERSION=2.10-SNAPSHOT
FSCRAWLER_PORT=8080

# Password for the 'elastic' user (at least 6 characters)
ELASTIC_PASSWORD=changeme

# Password for the 'kibana_system' user (at least 6 characters)
KIBANA_PASSWORD=changeme

# Version of Elastic products
STACK_VERSION=8.6.2

# Set the cluster name
CLUSTER_NAME=docker-cluster

# Set to 'basic' or 'trial' to automatically start the 30-day trial
#LICENSE=basic
LICENSE=trial

# Port to expose Elasticsearch HTTP API to the host
ES_PORT=9200

# Port to expose Kibana to the host
KIBANA_PORT=5601

# Enterprise Search settings
ENTERPRISE_SEARCH_PORT=3002
ENCRYPTION_KEYS=q3t6w9z$C&F)J@McQfTjWnZr4u7x!A%D

# Increase or decrease based on the available host memory (in bytes)
MEM_LIMIT=1073741824

# Project namespace (defaults to the current folder name if not set)
COMPOSE_PROJECT_NAME=fscrawler

PWD='.'

```

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [April 20, 2023, 2:58pm UTC](https://discuss.elastic.co/t/fscrawler-in-docker-exception-in-thread-main-java-util-nosuchelementexception/330398/2 "2023-04-20T14:58:37Z")

</div>

Welcome!

I think you are hitting [Windows Docker compose · Issue #1545 · dadoonet/fscrawler · GitHub](https://github.com/dadoonet/fscrawler/issues/1545#issuecomment-1328082702)

On which OS are you running?

---

<div class="post-metadata">

**Author:** ![lenchester](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@lenchester](https://discuss.elastic.co/u/lenchester)\
**Post date:** [April 21, 2023, 8:07am UTC](https://discuss.elastic.co/t/fscrawler-in-docker-exception-in-thread-main-java-util-nosuchelementexception/330398/3 "2023-04-21T08:07:27Z")

</div>

I seem to be really facing the same issue. I am running on windows. But I can't start container manually, because if I remove command: fscrawler idx --restart --rest from docker-compose.yml it's excites immediately

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [April 21, 2023, 9:00am UTC](https://discuss.elastic.co/t/fscrawler-in-docker-exception-in-thread-main-java-util-nosuchelementexception/330398/4 "2023-04-21T09:00:20Z")

</div>

Sounds like I need a Windows machine to debug this... ☹  
Or a contributor who wants to explore this... 🙂  
The only workaround I can see for now is to install Java and use the standard distribution of FSCrawler (not Docker)...

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 19, 2023, 9:00am UTC](https://discuss.elastic.co/t/fscrawler-in-docker-exception-in-thread-main-java-util-nosuchelementexception/330398/5 "2023-05-19T09:00:45Z")

</div>

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