I can't access Kibana

[cassiocesarps (Cássio Santos)]

Hi guys, after updating Kibana to version 6.3 I can not access it.
The following error message appears.

Does anyone know how to solve this?

[azasypkin]

Hey @cassiocesarps,

Could you please provide more details:

• How do you run Elasticsearch (e.g. command line arguments)?
• How do you run Kibana (e.g. command line arguments)?
• How does your kibana.yml look like (if you modified that, exlcuding sensitive info)?
• How does your elasticsearch.yml look like (if you modified that, exlcuding sensitive info)?
• Maybe you have Kibana/Elasticsearch logs that you can attach or at least notice something suspicious there?

Thanks,
Oleg

[cassiocesarps (Cássio Santos)]

What happened was that Kibana was working normally in the browser, after upgrading to 6.3 unable to access it anymore.
I'm running Elasticsearch and Kibana on a Fedora 28 server

[cassiocesarps (Cássio Santos)]

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: 0.0.0.0

Enables you to specify a path to mount Kibana at if you are running behind a proxy. This only affects

the URLs generated by Kibana, your proxy is expected to remove the basePath value before forwarding requests

to Kibana. This setting cannot end in a slash.

#server.basePath: ""

The maximum payload size in bytes for incoming server requests.

#server.maxPayloadBytes: 1048576

The Kibana server's name. This is used for display purposes.

#server.name: "your-hostname"

The URL of the Elasticsearch instance to use for all your queries.

#elasticsearch.url: "http://localhost:9200"

When this setting's value is true Kibana uses the hostname specified in the server.host

setting. When the value of this setting is false, Kibana uses the hostname of the host

that connects to this Kibana instance.

#elasticsearch.preserveHost: true

Kibana uses an index in Elasticsearch to store saved searches, visualizations and

dashboards. Kibana creates a new index if the index doesn't already exist.

#kibana.index: ".kibana"

The default application to load.

#kibana.defaultAppId: "home"

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: "user"
#elasticsearch.password: "pass"

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

Optional settings that provide the paths to the PEM-format SSL certificate and key files.

These files validate that your Elasticsearch backend uses the same key files.

#elasticsearch.ssl.certificate: /path/to/your/client.crt
#elasticsearch.ssl.key: /path/to/your/client.key

Optional setting that enables you to specify a path to the PEM file for the certificate

authority for your Elasticsearch instance.

#elasticsearch.ssl.certificateAuthorities: [ "/path/to/your/CA.pem" ]

To disregard the validity of SSL certificates, change this setting's value to 'none'.

#elasticsearch.ssl.verificationMode: full

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

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: 0

Time in milliseconds to wait for Elasticsearch at Kibana startup before retrying.

#elasticsearch.startupTimeout: 5000

Specifies the path where Kibana creates the process ID file.

#pid.file: /var/run/kibana.pid

Enables you specify a file where Kibana stores log output.

#logging.dest: stdout

Set the value of this setting to true to suppress all logging output.

#logging.silent: false

Set the value of this setting to true to suppress all logging output other than error messages.

#logging.quiet: false

Set the value of this setting to true to log all events, including system usage information

and all requests.

#logging.verbose: false

Set the interval in milliseconds to sample system and process performance

metrics. Minimum is 100ms. Defaults to 5000.

#ops.interval: 5000

The default locale. This locale can be used in certain circumstances to substitute any missing

translations.

#i18n.defaultLocale: "en"

[cassiocesarps (Cássio Santos)]

======================== 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: node-1

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 -----------------------------------

Set the bind address to a specific IP (IPv4 or IPv6):

#network.host: 192.168.0.1

Set a custom port for HTTP:

#http.port: 9200

For more information, consult the network module documentation.

--------------------------------- Discovery ----------------------------------

Pass an initial list of hosts to perform discovery when new node is started:

The default list of hosts is ["127.0.0.1", "[::1]"]

#discovery.zen.ping.unicast.hosts: ["host1", "host2"]

Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):

#discovery.zen.minimum_master_nodes:

For more information, consult the zen discovery module documentation.

---------------------------------- Gateway -----------------------------------

Block initial recovery after a full cluster restart until N nodes are started:

#gateway.recover_after_nodes: 3

For more information, consult the gateway module documentation.

---------------------------------- Various -----------------------------------

Require explicit names when deleting indices:

#action.destructive_requires_name: true

[azasypkin]

Hmm, so security plugin is enabled (since you see login page), but your kibana.yml doesn't include username and password for internal Kibana user:

#elasticsearch.username: "user"
#elasticsearch.password: "pass"

Can you please set these and make sure they are correct? If that's the reason you should see something like this in Kibana logs: security_exception\",\"reason\":\"failed to authenticate user ....

Best,
Oleg

[cassiocesarps (Cássio Santos)]

How do I disable the security plugin? Because before updating kibana this page did not appear

[azasypkin]

You can set xpack.security.enabled: false in elasticsearch.yml to disable x-pack security plugin.

[cassiocesarps (Cássio Santos)]

Even when entering the command, the login page continues to appear

[azasypkin]

Okay, so we need Elasticsearch and Kibana logs then, otherwise it's really hard to say what's the reason.

Can you share those?

[cassiocesarps (Cássio Santos)]

Could you tell me where the logs are?

[azasypkin]

I guess you didn't configure logging-to-file, so logs should be output to console/terminal window where you run elasticsearch and kibana. So this content should be enough to debug the issue.