# Problem configuring netflow in elk stack

**URL:** <https://discuss.elastic.co/t/problem-configuring-netflow-in-elk-stack/116661>\
**Category:** Logstash\
**Created:** [January 23, 2018, 11:56am UTC](https://discuss.elastic.co/t/problem-configuring-netflow-in-elk-stack/116661 "2018-01-23T11:56:52Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![BoffinPanda](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/boffinpanda/32/26225_2.png) [@BoffinPanda](https://discuss.elastic.co/u/BoffinPanda)\
**Post date:** [January 23, 2018, 11:56am UTC](https://discuss.elastic.co/t/problem-configuring-netflow-in-elk-stack/116661/1 "2018-01-23T11:56:52Z")

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Hello. I've configured the elk stack and now I want to add netflow to logstash.

I've made the necessary configuration files and even edited the modules in logstash.yml to enable netflow.

However, I continue to get Timelion: Error: in cell #1: Elasticsearch index not found: netflow-\*  
and visualize: Error: in cell #1: Elasticsearch index not found: netflow-\*

The following can be seen in the dashboard: No data is being shown.

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/3/3/33796470c01d25efb69203375211957a18f35893.png)

Please tell me if I am missing something. Should I do something with Elastic search as well?

I binded netflow with 2055 port with the following command:

/usr/share/logstash/bin# ./logstash --modules netflow -M netflow.var.input.udp.port=2055 --path.settings=/etc/logstash  
Sending Logstash's logs to /usr/share/logstash/logs which is now configured via log4j2.properties

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<div class="post-metadata">

**Author:** ![BoffinPanda](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/boffinpanda/32/26225_2.png) [@BoffinPanda](https://discuss.elastic.co/u/BoffinPanda)\
**Post date:** [January 24, 2018, 2:44pm UTC](https://discuss.elastic.co/t/problem-configuring-netflow-in-elk-stack/116661/2 "2018-01-24T14:44:00Z")

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Bump. Can anyone assist me on this problem?

I can give the config files that will be asked.

I see the problem with elastic search indices for netflow.

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**Author:** ![sarlacpit](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sarlacpit/32/22567_2.png) [@sarlacpit](https://discuss.elastic.co/u/sarlacpit)\
**Post date:** [February 6, 2018, 4:50pm UTC](https://discuss.elastic.co/t/problem-configuring-netflow-in-elk-stack/116661/3 "2018-02-06T16:50:28Z")

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I have been having a identical problem whereas there is no netflow index being created and never found an answer.

Did port 2055 open up?  
Can you show your config from logstash.yml please? (remember to use the code formatting)

Thanks

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<div class="post-metadata">

**Author:** ![BoffinPanda](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/boffinpanda/32/26225_2.png) [@BoffinPanda](https://discuss.elastic.co/u/BoffinPanda)\
**Post date:** [February 7, 2018, 9:16am UTC](https://discuss.elastic.co/t/problem-configuring-netflow-in-elk-stack/116661/4 "2018-02-07T09:16:28Z")

</div>

No, the port didnt open up.

I did netstat -an|grep 2055 only to find no results.

Below is my logstash.yml

# Settings file in YAML

# 

# Settings can be specified either in hierarchical form, e.g.:

# 

# pipeline:

# batch:

# size: 125

# delay: 5

# 

# Or as flat keys:

# 

# pipeline.batch.size: 125

# pipeline.batch.delay: 5

# 

# ------------ Node identity ------------

# 

# Use a descriptive name for the node:

# 

# node.name: test

# 

# If omitted the node name will default to the machine's host name

# 

# ------------ Data path ------------------

# 

# Which directory should be used by logstash and its plugins

# for any persistent needs. Defaults to LOGSTASH\_HOME/data

# 

path.data: /var/lib/logstash

# 

# ------------ Pipeline Settings --------------

# 

# Set the number of workers that will, in parallel, execute the filters+outputs

# stage of the pipeline.

# 

# This defaults to the number of the host's CPU cores.

# 

# pipeline.workers: 2

# 

# How many workers should be used per output plugin instance

# 

# pipeline.output.workers: 1

# 

# How many events to retrieve from inputs before sending to filters+workers

# 

# pipeline.batch.size: 125

# 

# How long to wait before dispatching an undersized batch to filters+workers

# Value is in milliseconds.

# 

# pipeline.batch.delay: 5

# 

# Force Logstash to exit during shutdown even if there are still inflight

# events in memory. By default, logstash will refuse to quit until all

# received events have been pushed to the outputs.

# 

# WARNING: enabling this can lead to data loss during shutdown

# 

# pipeline.unsafe\_shutdown: false

# 

# ------------ Pipeline Configuration Settings --------------

# 

# Where to fetch the pipeline configuration for the main pipeline

# 

path.config: /etc/logstash/conf.d/\*.conf

# 

# Pipeline configuration string for the main pipeline

# 

# config.string:

# 

# At startup, test if the configuration is valid and exit (dry run)

# 

# config.test\_and\_exit: false

# 

# Periodically check if the configuration has changed and reload the pipeline

# This can also be triggered manually through the SIGHUP signal

# 

# config.reload.automatic: false

# 

# How often to check if the pipeline configuration has changed (in seconds)

# 

# config.reload.interval: 3s

# 

# Show fully compiled configuration as debug log message

# NOTE: --log.level must be 'debug'

# 

# config.debug: false

# 

# When enabled, process escaped characters such as \n and " in strings in the

# pipeline configuration files.

# 

# config.support\_escapes: false

# 

# ------------ Module Settings ---------------

# Define modules here. Modules definitions must be defined as an array.

# The simple way to see this is to prepend each `name` with a `-`, and keep

# all associated variables under the `name` they are associated with, and

# above the next, like this:

# 

modules:  
- name: netflow  
var.input.udp.port: 2055

# var.PLUGINTYPE1.PLUGINNAME1.KEY2: VALUE

# var.PLUGINTYPE2.PLUGINNAME1.KEY1: VALUE

# var.PLUGINTYPE3.PLUGINNAME3.KEY1: VALUE

# 

# Module variable names must be in the format of

# 

# var.PLUGIN\_TYPE.PLUGIN\_NAME.KEY

# 

# modules:

#- name: netflow

# var.input.udp.port: 2055

# 

# ------------ Cloud Settings ---------------

# Define Elastic Cloud settings here.

# Format of cloud.id is a base64 value e.g. dXMtZWFzdC0xLmF3cy5mb3VuZC5pbyRub3RhcmVhbCRpZGVudGlmaWVy

# and it may have an label prefix e.g. staging:dXMtZ...

# This will overwrite 'var.elasticsearch.hosts' and 'var.kibana.host'

# cloud.id:

# 

# Format of cloud.auth is: :

# This is optional

# If supplied this will overwrite 'var.elasticsearch.username' and 'var.elasticsearch.password'

# If supplied this will overwrite 'var.kibana.username' and 'var.kibana.password'

# cloud.auth: elastic:

# 

# ------------ Queuing Settings --------------

# 

# Internal queuing model, "memory" for legacy in-memory based queuing and

# "persisted" for disk-based acked queueing. Defaults is memory

# 

# queue.type: memory

# 

# If using queue.type: persisted, the directory path where the data files will be stored.

# Default is path.data/queue

# 

# path.queue:

# 

# If using queue.type: persisted, the page data files size. The queue data consists of

# append-only data files separated into pages. Default is 250mb

# 

# queue.page\_capacity: 250mb

# 

# If using queue.type: persisted, the maximum number of unread events in the queue.

# Default is 0 (unlimited)

# 

# queue.max\_events: 0

# 

# If using queue.type: persisted, the total capacity of the queue in number of bytes.

# If you would like more unacked events to be buffered in Logstash, you can increase the

# capacity using this setting. Please make sure your disk drive has capacity greater than

# the size specified here. If both max\_bytes and max\_events are specified, Logstash will pick

# whichever criteria is reached first

# Default is 1024mb or 1gb

# 

# queue.max\_bytes: 1024mb

# 

# If using queue.type: persisted, the maximum number of acked events before forcing a checkpoint

# Default is 1024, 0 for unlimited

# 

# queue.checkpoint.acks: 1024

# 

# If using queue.type: persisted, the maximum number of written events before forcing a checkpoint

# Default is 1024, 0 for unlimited

# 

# queue.checkpoint.writes: 1024

# 

# If using queue.type: persisted, the interval in milliseconds when a checkpoint is forced on the head page

# Default is 1000, 0 for no periodic checkpoint.

# 

# queue.checkpoint.interval: 1000

# 

# ------------ Dead-Letter Queue Settings --------------

# Flag to turn on dead-letter queue.

# 

# dead\_letter\_queue.enable: false

# If using dead\_letter\_queue.enable: true, the maximum size of each dead letter queue. Entries

# will be dropped if they would increase the size of the dead letter queue beyond this setting.

# Default is 1024mb

# dead\_letter\_queue.max\_bytes: 1024mb

# If using dead\_letter\_queue.enable: true, the directory path where the data files will be stored.

# Default is path.data/dead\_letter\_queue

# 

# path.dead\_letter\_queue:

# 

# ------------ Metrics Settings --------------

# 

# Bind address for the metrics REST endpoint

# 

# http.host: "127.0.0.1"

# 

# Bind port for the metrics REST endpoint, this option also accept a range

# (9600-9700) and logstash will pick up the first available ports.

# 

# http.port: 9600-9700

# 

# ------------ Debugging Settings --------------

# 

# Options for log.level:

# \* fatal

# \* error

# \* warn

# \* info (default)

# \* debug

# \* trace

# 

# log.level: info

path.logs: /var/log/logstash

# 

# ------------ Other Settings --------------

# 

# Where to find custom plugins

# path.plugins: []

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<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:** [March 7, 2018, 9:16am UTC](https://discuss.elastic.co/t/problem-configuring-netflow-in-elk-stack/116661/5 "2018-03-07T09:16:31Z")

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