Kibana: Getting error of ‘Server not ready’ on browser side

Hello Team,

Someone can help me with an error because when I load the Kibana by the following url http://192.168.18.56:5601/ I get the following error "Kibana server is not ready yet" and in the lower left part I get another notification.

Configuration recommended

"In a production environment, it is recommended that you configure server.publicBaseUrl. Learn more"

Here is my Elasticsearch.yml configuration:

# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
#cluster.name: my-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: SRV-ELK
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /var/lib/elasticsearch
#
# Path to log files:
#
path.logs: /var/log/elasticsearch
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# By default Elasticsearch is only accessible on localhost. Set a different
# address here to expose this node on the network:
#

network.host: 192.168.18.56
#
# By default Elasticsearch listens for HTTP traffic on the first free port it
# finds starting at 9200. Set a specific HTTP port here:
#
http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when this node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
#discovery.seed_hosts: ["host1", "host2"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
#cluster.initial_master_nodes: ["node-1", "node-2"]
#
# For more information, consult the discovery and cluster formation module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Allow wildcard deletion of indices:
#
#action.destructive_requires_name: false

#----------------------- BEGIN SECURITY AUTO CONFIGURATION -----------------------
#
# The following settings, TLS certificates, and keys have been automatically
# generated to configure Elasticsearch security features on 13-06-2024 15:51:42
#
# --------------------------------------------------------------------------------

# Enable security features
xpack.security.enabled: true

xpack.security.enrollment.enabled: true

# Enable encryption for HTTP API client connections, such as Kibana, Logstash, and Agents
xpack.security.http.ssl:
  enabled: true
  keystore.path: certs/http.p12

# Enable encryption and mutual authentication between cluster nodes
xpack.security.transport.ssl:
  enabled: true
  verification_mode: certificate
  keystore.path: certs/transport.p12
  truststore.path: certs/transport.p12
# Create a new cluster with the current node only
# Additional nodes can still join the cluster later
cluster.initial_master_nodes: ["SRV-ELK"]

# Allow HTTP API connections from anywhere
# Connections are encrypted and require user authentication
http.host: 0.0.0.0

# Allow other nodes to join the cluster from anywhere
# Connections are encrypted and mutually authenticated
#transport.host: 0.0.0.0

#----------------------- END SECURITY AUTO CONFIGURATION -------------------------

Here I share my kibana.yml configuration:

# For more configuration options see the configuration guide for Kibana in
# https://www.elastic.co/guide/index.html

# =================== System: Kibana Server ===================
# Kibana is served by a back end server. This setting specifies the port to use.
server.port: 5601

# Specifies the address to which the Kibana server will bind. IP addresses and host names are both valid values.
# The default is 'localhost', which usually means remote machines will not be able to connect.
# To allow connections from remote users, set this parameter to a non-loopback address.
server.host: 192.168.18.56

# Enables you to specify a path to mount Kibana at if you are running behind a proxy.
# Use the `server.rewriteBasePath` setting to tell Kibana if it should remove the basePath
# from requests it receives, and to prevent a deprecation warning at startup.
# This setting cannot end in a slash.
#server.basePath: ""

# Specifies whether Kibana should rewrite requests that are prefixed with
# `server.basePath` or require that they are rewritten by your reverse proxy.
# Defaults to `false`.
#server.rewriteBasePath: false

# Specifies the public URL at which Kibana is available for end users. If
# `server.basePath` is configured this URL should end with the same basePath.
server.publicBaseUrl: 192.168.18.56:5601

# The maximum payload size in bytes for incoming server requests.
#server.maxPayload: 1048576

# The Kibana server's name. This is used for display purposes.
#server.name: "your-hostname"

# =================== System: Kibana Server (Optional) ===================
# Enables SSL and paths to the PEM-format SSL certificate and SSL key files, respectively.
# These settings enable SSL for outgoing requests from the Kibana server to the browser.
#server.ssl.enabled: false
#server.ssl.certificate: /path/to/your/server.crt
#server.ssl.key: /path/to/your/server.key

# =================== System: Elasticsearch ===================
# The URLs of the Elasticsearch instances to use for all your queries.
elasticsearch.hosts: https://192.168.18.56:9200

# If your Elasticsearch is protected with basic authentication, these settings provide
# the username and password that the Kibana server uses to perform maintenance on the Kibana
# index at startup. Your Kibana users still need to authenticate with Elasticsearch, which
# is proxied through the Kibana server.
#elasticsearch.username: "kibana_system"
#elasticsearch.password: "password"

# Kibana can also authenticate to Elasticsearch via "service account tokens".
# Service account tokens are Bearer style tokens that replace the traditional username/password based configuration.
# Use this token instead of a username/password.
# elasticsearch.serviceAccountToken: "my_token"

# Time in milliseconds to wait for Elasticsearch to respond to pings. Defaults to the value of
# the elasticsearch.requestTimeout setting.
#elasticsearch.pingTimeout: 1500

# Time in milliseconds to wait for responses from the back end or Elasticsearch. This value
# must be a positive integer.
#elasticsearch.requestTimeout: 30000

# The maximum number of sockets that can be used for communications with elasticsearch.
# Defaults to `Infinity`.
#elasticsearch.maxSockets: 1024

# Specifies whether Kibana should use compression for communications with elasticsearch
# Defaults to `false`.
#elasticsearch.compression: false

# List of Kibana client-side headers to send to Elasticsearch. To send *no* client-side
# headers, set this value to [] (an empty list).
#elasticsearch.requestHeadersWhitelist: [ authorization ]

# Header names and values that are sent to Elasticsearch. Any custom headers cannot be overwritten
# by client-side headers, regardless of the elasticsearch.requestHeadersWhitelist configuration.
#elasticsearch.customHeaders: {}

# Time in milliseconds for Elasticsearch to wait for responses from shards. Set to 0 to disable.
#elasticsearch.shardTimeout: 30000

# =================== System: Elasticsearch (Optional) ===================
# These files are used to verify the identity of Kibana to Elasticsearch and are required when
# xpack.security.http.ssl.client_authentication in Elasticsearch is set to required.
#elasticsearch.ssl.certificate: /path/to/your/client.crt
#elasticsearch.ssl.key: /path/to/your/client.key

# Enables you to specify a path to the PEM file for the certificate
# authority for your Elasticsearch instance.
#elasticsearch.ssl.certificateAuthorities: [ "/etc/kibana/certs/http_ca.crt" ]

# To disregard the validity of SSL certificates, change this setting's value to 'none'.
#elasticsearch.ssl.verificationMode: full

# =================== System: Logging ===================
# Set the value of this setting to off to suppress all logging output, or to debug to log everything. Defaults to 'info'
#logging.root.level: debug

# Enables you to specify a file where Kibana stores log output.
logging:
  appenders:
    file:
      type: file
      fileName: /var/log/kibana/kibana.log
      layout:
        type: json
  root:
    appenders:
      - default
      - file
#  policy:
#    type: size-limit
#    size: 256mb
#  strategy:
#    type: numeric
#    max: 10
#  layout:
#    type: json

# Logs queries sent to Elasticsearch.
#logging.loggers:
#  - name: elasticsearch.query
#    level: debug

# Logs http responses.
#logging.loggers:
#  - name: http.server.response
#    level: debug

# Logs system usage information.
#logging.loggers:
#  - name: metrics.ops
#    level: debug

# Enables debug logging on the browser (dev console)
#logging.browser.root:
#  level: debug

# =================== System: Other ===================
# The path where Kibana stores persistent data not saved in Elasticsearch. Defaults to data
#path.data: data

# Specifies the path where Kibana creates the process ID file.
pid.file: /run/kibana/kibana.pid

# Set the interval in milliseconds to sample system and process performance
# metrics. Minimum is 100ms. Defaults to 5000ms.
#ops.interval: 5000

# Specifies locale to be used for all localizable strings, dates and number formats.
# Supported languages are the following: English (default) "en", Chinese "zh-CN", Japanese "ja-JP", French "fr-FR".
#i18n.locale: "en"

# =================== Frequently used (Optional)===================

# =================== Saved Objects: Migrations ===================
# Saved object migrations run at startup. If you run into migration-related issues, you might need to adjust these settings.

# The number of documents migrated at a time.
# If Kibana can't start up or upgrade due to an Elasticsearch `circuit_breaking_exception`,
# use a smaller batchSize value to reduce the memory pressure. Defaults to 1000 objects per batch.
#migrations.batchSize: 1000

# The maximum payload size for indexing batches of upgraded saved objects.
# To avoid migrations failing due to a 413 Request Entity Too Large response from Elasticsearch.
# This value should be lower than or equal to your Elasticsearch cluster’s `http.max_content_length`
# configuration option. Default: 100mb
#migrations.maxBatchSizeBytes: 100mb

# The number of times to retry temporary migration failures. Increase the setting
# if migrations fail frequently with a message such as `Unable to complete the [...] step after
# 15 attempts, terminating`. Defaults to 15
#migrations.retryAttempts: 15

# =================== Search Autocomplete ===================
# Time in milliseconds to wait for autocomplete suggestions from Elasticsearch.
# This value must be a whole number greater than zero. Defaults to 1000ms
#unifiedSearch.autocomplete.valueSuggestions.timeout: 1000

# Maximum number of documents loaded by each shard to generate autocomplete suggestions.
# This value must be a whole number greater than zero. Defaults to 100_000
#unifiedSearch.autocomplete.valueSuggesti192.168.18.56:5601ons.terminateAfter: 100000

Errors at kibana logs level:

{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2024-06-13T16:04:45.792-05:00","message":"Server is NOT enabled","log":{"level":"INFO","logger":"plugins.assetManager"},"process":{"pid":32513,"uptime":28.777329101},"trace":{"id":"0ebeaf13301d92a91af1765033ec5137"},"transaction":{"id":"579438045fbef525"}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2024-06-13T16:04:47.065-05:00","message":"Unable to retrieve version information from Elasticsearch nodes. self-signed certificate in certificate chain","log":{"level":"ERROR","logger":"elasticsearch-service"},"process":{"pid":32513,"uptime":30.06136275},"trace":{"id":"0ebeaf13301d92a91af1765033ec5137"},"transaction":{"id":"579438045fbef525"}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2024-06-13T16:04:52.079-05:00","message":"Browser executable: /usr/share/kibana/node_modules/@kbn/screenshotting-plugin/chromium/headless_shell-linux_x64/headless_shell","log":{"level":"INFO","logger":"plugins.screenshotting.chromium"},"process":{"pid":32513,"uptime":35.064798315},"trace":{"id":"0ebeaf13301d92a91af1765033ec5137"},"transaction":{"id":"579438045fbef525"}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2024-06-13T16:24:35.043-05:00","message":"Timeout: it took more than 1200000ms","error":{"message":"Timeout: it took more than 1200000ms","type":"Error","stack_trace":"Error: Timeout: it took more than 1200000ms\n    at Timeout._onTimeout (/usr/share/kibana/node_modules/@kbn/alerting-plugin/server/alerts_service/lib/install_with_timeout.js:43:18)\n    at listOnTimeout (node:internal/timers:573:17)\n    at processTimers (node:internal/timers:514:7)"},"log":{"level":"ERROR","logger":"plugins.ruleRegistry"},"process":{"pid":32513,"uptime":1218.032861729},"trace":{"id":"0ebeaf13301d92a91af1765033ec5137"},"transaction":{"id":"579438045fbef525"}}

Errors at journalctl -u kibana level:

Jun 13 16:01:21 SRV-ELK kibana[32418]: Kibana is currently running with legacy OpenSSL providers enabled! For details and instructions on how to disable see>
Jun 13 16:01:21 SRV-ELK kibana[32418]: {"log.level":"info","@timestamp":"2024-06-13T21:01:21.995Z","log.logger":"elastic-apm-node","ecs.version":"8.10.0","a>
Jun 13 16:01:22 SRV-ELK kibana[32418]: Native global console methods have been overridden in production environment.
Jun 13 16:01:23 SRV-ELK kibana[32418]: [2024-06-13T16:01:23.296-05:00][INFO ][root] Kibana is starting
Jun 13 16:01:23 SRV-ELK kibana[32418]: [2024-06-13T16:01:23.350-05:00][INFO ][root] Kibana is shutting down
Jun 13 16:01:23 SRV-ELK kibana[32418]: [2024-06-13T16:01:23.355-05:00][FATAL][root] Reason: [config validation of [server].publicBaseUrl]: expected URI with>
Jun 13 16:01:23 SRV-ELK kibana[32418]: Error: [config validation of [server].publicBaseUrl]: expected URI with scheme [http|https].
Jun 13 16:01:23 SRV-ELK kibana[32418]:     at ObjectType.validate (/usr/share/kibana/node_modules/@kbn/config-schema/src/types/type.js:112:13)
Jun 13 16:01:23 SRV-ELK kibana[32418]:     at ConfigService.validateAtPath (/usr/share/kibana/node_modules/@kbn/config/src/config_service.js:251:19)
Jun 13 16:01:23 SRV-ELK kibana[32418]:     at /usr/share/kibana/node_modules/@kbn/config/src/config_service.js:261:189
Jun 13 16:01:23 SRV-ELK kibana[32418]:     at /usr/share/kibana/node_modules/rxjs/dist/cjs/internal/operators/map.js:10:37
Jun 13 16:01:23 SRV-ELK kibana[32418]:     at OperatorSubscriber._this._next (/usr/share/kibana/node_modules/rxjs/dist/cjs/internal/operators/OperatorSubscr>
Jun 13 16:01:23 SRV-ELK kibana[32418]:     at OperatorSubscriber.Subscriber.next (/usr/share/kibana/node_modules/rxjs/dist/cjs/internal/Subscriber.js:51:18)
Jun 13 16:01:23 SRV-ELK kibana[32418]:     at /usr/share/kibana/node_modules/rxjs/dist/cjs/internal/operators/distinctUntilChanged.js:18:28

You need to fix publicBaseUrl in kibana.yml to smth like server.publicBaseUrl: "http://your-public-kibana-domain.com"

Best regards, Dima

Hi Dzmitry,

I have this IP configured on my Server 192.168.18.56 and the hostname SRV-ELK.

[root@SRV-ELK ~]# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.18.56  netmask 255.255.255.0  broadcast 192.168.18.255
        inet6 fe80::a00:27ff:fe1a:2455  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:1a:24:55  txqueuelen 1000  (Ethernet)
        RX packets 76  bytes 10504 (10.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 67  bytes 9488 (9.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 84  bytes 6540 (6.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 84  bytes 6540 (6.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@SRV-ELK ~]#
[root@SRV-ELK ~]# hostname
SRV-ELK
[root@SRV-ELK ~]#

Hey @rleiva

I pointed the error expected URI with scheme [http|https]

If that IP is a static address and accessible from your network, you can add in kibana.yml

server.publicBaseUrl: http://192.168.18.56:5601

Regards, Dima