I can't connect my Logstash to ES Stack Monitoring please help

I check the status of metricbeat, it says node_stats/node_stats.go:73 json: cannot unmarshal object into Go struct field .version of type string and could not fetch node pipelines: HTTP error 405 in : 405 Method Not Allowed

I stuck several days fixing this error please help.
Here is my metricbeat config:

# =========================== Modules configuration ============================


metricbeat.config.modules:
  # Glob pattern for configuration loading
  path: ${path.config}/modules.d/*.yml

  # Set to true to enable config reloading
  reload.enabled: false

  # Period on which files under path should be checked for changes
  #reload.period: 10s

# ======================= Elasticsearch template setting =======================

setup.template.settings:
  index.number_of_shards: 1
  #index.codec: best_compression
  #_source.enabled: false
# =================================== Kibana ===================================

# Starting with Beats version 6.0.0, the dashboards are loaded via the Kibana API.
# This requires a Kibana endpoint configuration.
setup.kibana:

  # Kibana Host
  # Scheme and port can be left out and will be set to the default (http and 5601)
  # In case you specify and additional path, the scheme is required: http://localhost:5601/path
  # IPv6 addresses should always be defined as: https://[2001:db8::1]:5601
  host: "172.16.7.75:5601"

  # Kibana Space ID
  # ID of the Kibana Space into which the dashboards should be loaded. By default,
  # the Default Space will be used.
  #space.id:
# Configure what output to use when sending the data collected by the beat.

# ---------------------------- Elasticsearch Output ----------------------------
output.elasticsearch:
  # Array of hosts to connect to.
  hosts: ["172.16.7.75:9200"]

  # Protocol - either `http` (default) or `https`.
  #protocol: "https"

  # Authentication credentials - either API key or username/password.
  #api_key: "id:api_key"
  username: "elastic"
  password: "pass"

# ------------------------------ Logstash Output -------------------------------
#output.logstash:
  # The Logstash hosts
  #hosts: ["172.16.7.75:5044"]

  # Optional SSL. By default is off.
  # List of root certificates for HTTPS server verifications
  #ssl.certificate_authorities: ["/etc/pki/root/ca.pem"]

  # Certificate for SSL client authentication
  #ssl.certificate: "/etc/pki/client/cert.pem"

  # Client Certificate Key
  #ssl.key: "/etc/pki/client/cert.key"


# ================================= Processors =================================

# Configure processors to enhance or manipulate events generated by the beat.

processors:
  - add_host_metadata: ~
  - add_cloud_metadata: ~
  - add_docker_metadata: ~
  - add_kubernetes_metadata: ~

/>

also this is the contents of my logstash-xpack under /etc/metricbeat/modules.d/logstash-xpack.yml

logstash-xpack config:

# Module: logstash
# Docs: https://www.elastic.co/guide/en/beats/metricbeat/7.17/metricbeat-module-logstash.html

- module: logstash
  xpack.enabled: true
  metricsets: ["node", "node_stats"]
  period: 10s
  hosts: ["172.16.7.75:9200"]
  username: "elastic"
  password: "pass"

logstash config:

# 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: Logstash Node
#
# 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 --------------
#
# The ID of the pipeline.
#
# pipeline.id: main
#
# 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 events to retrieve from inputs before sending to filters+workers
#
# pipeline.batch.size: 125
#
# How long to wait in milliseconds while polling for the next event
# before dispatching an undersized batch to filters+outputs
#
# pipeline.batch.delay: 50
#
# 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
#
# Set the pipeline event ordering. Options are "auto" (the default), "true" or "false".
# "auto" will  automatically enable ordering if the 'pipeline.workers' setting
# is also set to '1'.
# "true" will enforce ordering on the pipeline and prevent logstash from starting
# if there are multiple workers.
# "false" will disable any extra processing necessary for preserving ordering.
#
# pipeline.ordered: auto
#
# Sets the pipeline's default value for `ecs_compatibility`, a setting that is
# available to plugins that implement an ECS Compatibility mode for use with
# the Elastic Common Schema.
# Possible values are:
# - disabled (default)
# - v1
# - v8
# The default value will be `v8` in Logstash 8, making ECS on-by-default. To ensure a
# migrated pipeline continues to operate as it did before your upgrade, opt-OUT
# of ECS for the individual pipeline in its `pipelines.yml` definition. Setting
# it here will set the default for _all_ pipelines, including new ones.
#
# pipeline.ecs_compatibility: disabled
#
# ------------ Pipeline Configuration Settings --------------
#
# Where to fetch the pipeline configuration for the main pipeline
#
# path.config:
#
# 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: true
#
# How often to check if the pipeline configuration has changed (in seconds)
# Note that the unit value (s) is required. Values without a qualifier (e.g. 60)
# are treated as nanoseconds.
# Setting the interval this way is not recommended and might change in later versions.
#
# 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
#
# ------------ API Settings -------------
# Define settings related to the HTTP API here.
#
# The HTTP API is enabled by default. It can be disabled, but features that rely
# on it will not work as intended.
#
 api.enabled: true
#
# By default, the HTTP API is not secured and is therefore bound to only the
# host's loopback interface, ensuring that it is not accessible to the rest of
# the network.
# When secured with SSL and Basic Auth, the API is bound to _all_ interfaces
# unless configured otherwise.
#
 api.http.host: "0.0.0.0"
#
# The HTTP API web server will listen on an available port from the given range.
# Values can be specified as a single port (e.g., `9600`), or an inclusive range
# of ports (e.g., `9600-9700`).
#
 api.http.port: 9600-9700
#
# The HTTP API includes a customizable "environment" value in its response,
# which can be configured here.
#
# api.environment: "production"
#
# The HTTP API can be secured with SSL (TLS). To do so, you will need to provide
# the path to a password-protected key
# api.ssl.enabled: false
# api.ssl.keystore.path: /path/to/keystore.jks
# api.ssl.keystore.password: "y0uRp4$$w0rD"
#
# The HTTP API can be configured to require authentication. Acceptable values are
#  - `none`:  no auth is required (default)
#  - `basic`: clients must authenticate with HTTP Basic auth, as configured
#             with `api.auth.basic.*` options below
# api.auth.type: none
#
# When configured with `api.auth.type` `basic`, you must provide the credentials
# that requests will be validated against. Usage of Environment or Keystore
# variable replacements is encouraged (such as the value `"${HTTP_PASS}"`, which
# resolves to the value stored in the keystore's `HTTP_PASS` variable if present
# or the same variable from the environment)
#
# api.auth.basic.username: "logstash-user"
# api.auth.basic.password: "s3cUreP4$$w0rD"
#
# ------------ 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: MODULE_NAME
#     var.PLUGINTYPE1.PLUGINNAME1.KEY1: VALUE
#     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:
#
# ------------ 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: <identifier>
#
# Format of cloud.auth is: <user>:<pass>
# 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:<password>
#
# ------------ Queuing Settings --------------
#
root@logstash:~# nano /etc/logstash/logstash.yml
  GNU nano 4.8                                                                               /etc/logstash/logstash.yml
# Format of cloud.auth is: <user>:<pass>
# 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:<password>
#
# ------------ 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 64mb
#
# queue.page_capacity: 64mb
#
# 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 interval in milliseconds where if no further events eligible for the DLQ
# have been created, a dead letter queue file will be written. A low value here will mean that more, smaller, queue files
# may be written, while a larger value will introduce more latency between items being "written" to the dead letter queue, and
# being available to be read by the dead_letter_queue input when items are are written infrequently.
# Default is 5000.
#
# dead_letter_queue.flush_interval: 5000

# 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:
#
# ------------ 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: []
#
# Flag to output log lines of each pipeline in its separate log file. Each log filename contains the pipeline.name
# Default is false
# pipeline.separate_logs: false
#
# ------------ X-Pack Settings (not applicable for OSS build)--------------
#
# X-Pack Monitoring
# https://www.elastic.co/guide/en/logstash/current/monitoring-logstash.html
#xpack.monitoring.enabled: true
#xpack.monitoring.elasticsearch.username: elastic
#xpack.monitoring.elasticsearch.password: pass
#xpack.monitoring.elasticsearch.proxy: ["http://proxy:port"]
#xpack.monitoring.elasticsearch.hosts: ["http://172.16.7.75:9200"]
# an alternative to hosts + username/password settings is to use cloud_id/cloud_auth
#xpack.monitoring.elasticsearch.cloud_id: monitoring_cluster_id:xxxxxxxxxx
#xpack.monitoring.elasticsearch.cloud_auth: logstash_system:password
# another authentication alternative is to use an Elasticsearch API key
#xpack.monitoring.elasticsearch.api_key: "id:api_key"
#xpack.monitoring.elasticsearch.ssl.certificate_authority: [ "/path/to/ca.crt" ]
#xpack.monitoring.elasticsearch.ssl.truststore.path: path/to/file
#xpack.monitoring.elasticsearch.ssl.truststore.password: password
#xpack.monitoring.elasticsearch.ssl.keystore.path: /path/to/file
#xpack.monitoring.elasticsearch.ssl.keystore.password: password
#xpack.monitoring.elasticsearch.ssl.verification_mode: certificate
#xpack.monitoring.elasticsearch.sniffing: false
#xpack.monitoring.collection.interval: 10s
#xpack.monitoring.collection.pipeline.details.enabled: true
#
# X-Pack Management
# https://www.elastic.co/guide/en/logstash/current/logstash-centralized-pipeline-management.html
xpack.management.enabled: true
#xpack.management.pipeline.id: ["main", "apache_logs"]
xpack.management.elasticsearch.username: elastic
xpack.management.elasticsearch.password: pass
#xpack.management.elasticsearch.proxy: ["http://proxy:port"]
xpack.management.elasticsearch.hosts: ["http://172.16.7.75:9200"]
# an alternative to hosts + username/password settings is to use cloud_id/cloud_auth
#xpack.management.elasticsearch.cloud_id: management_cluster_id:xxxxxxxxxx
#xpack.management.elasticsearch.cloud_auth: logstash_admin_user:password
# another authentication alternative is to use an Elasticsearch API key
#xpack.management.elasticsearch.api_key: "id:api_key"
#xpack.management.elasticsearch.ssl.certificate_authority: [ "/path/to/ca.crt" ]
#xpack.management.elasticsearch.ssl.truststore.path: /path/to/file
#xpack.management.elasticsearch.ssl.truststore.password: password
#xpack.management.elasticsearch.ssl.keystore.path: /path/to/file
#xpack.management.elasticsearch.ssl.keystore.password: password
#xpack.management.elasticsearch.ssl.verification_mode: certificate
#xpack.management.elasticsearch.sniffing: false
#xpack.management.logstash.poll_interval: 5s

# X-Pack GeoIP plugin
# https://www.elastic.co/guide/en/logstash/current/plugins-filters-geoip.html#plugins-filters-geoip-manage_update
#xpack.geoip.download.endpoint: "https://geoip.elastic.co/v1/database"

hello @Cruz , welcome to the Elastic community!

could you please provide the version of metricbeat and logstash you are running?

especially for metricbeat this in need to reference the proper version to check of the source file node_stats/node_stats.go reported in your error

it seems anyway that you are using the elasticsearch address instead of the logstash one in your logstash-xpack.yml:

- module: logstash
  xpack.enabled: true
  metricsets: ["node", "node_stats"]
  period: 10s
  hosts: ["172.16.7.75:9200"] # 9200 is ES port

Most likely you want to set something like

  hosts: ["172.16.7.75:9600"] # Note 9600 as port

Beware that in your logstash config you set a port range for the api http settings:

api.http.port: 9600-9700

You might probably want to set a single port, so you can reference it in logstash-xpack.yml

Thank you so much for your reply! @Andrea_Spacca
This is the version of logstash and metricbeat that I am using.

Logstash 7.17.8
Metricbeat 7.17.8

I did what you said.

logstash.yml:
api.http.port: 9600

logstash-xpack.yml:

# Module: logstash
# Docs: https://www.elastic.co/guide/en/beats/metricbeat/7.17/metricbeat-module-logstash.html

- module: logstash
  xpack.enabled: true
  metricsets: ["node", "node_stats"]
  period: 10s
  hosts: ["172.16.7.75:9600"]
  username: "elastic"
  password: "pass"

Now this is the error that I get.

node_stats/node_stats.go:73        error making http request: Get "http://172.16.7.75:9600/": dial tcp 172.16.7.75:9600: connect: connection refused
node_stats/node_stats.go:73        error making http request: Get "http://172.16.7.75:9600/": dial tcp 172.16.7.75:9600: connect: connection refused
node/node.go:79        could not fetch node pipelines: error making http request: Get "http://172.16.7.75:9600/_node/pipelines?graph=true": dial tcp 172.16.7.75:9600: connect: connection refused

I don't get it the 9600 port. :smiling_face_with_tear:
is port 5044 different from 9600?

I see in the logs of logstash that the api endpoint has successfully start using port 9600.
I also add 9600 in my ufw and this error still appears

9600 is the default port for the logstash monitoring APIs

You use this port in the logstash-xpack module configuration on metricbet to collect metrics from logstash

5044 is the default port for the logstash beats input plugin

You use this in port for output.logstash in the main configuration on metricbeat to send metrics events to logstash, as different from sending them directly to elasticsearch (output.elasticsearch)

What about the bound address? Is logstash listening on port 9600 on 172.16.7.75 or some other IP?

Could you try to execute and share the output of the following command?

$ curl -v -XGET 'localhost:9600/?pretty'
1 Like

YESSS :rofl:

After I use this curl --v -XGET 'localhost:9600/?pretty'
It turns out the bind IP Address is 127.0.0.1:9600 so the metricbeat can't connect
I was wondering why the api.http.port: 172.16.7.75 I put in the logstash.yml can't be bind?

So what I did was I changed it in /etc/environment

from 127.0.0.1 localhost
to 172.16.7.75 localhost

Thank you so much @Andrea_Spacca
You're so helpful :grinning:

it is api.http.host, without setting it, logstash should bound to all the interfaces, as well as setting it to "0.0.0.0"

1 Like