Kibana unable to start

[dinon]

ELK stack was not touched with no changes made whatsoever. all is running on centos7

When starting kibana it is now unable to connect to elasticsearch.
log [20:12:09.065] [info][status][plugin:kibana@6.1.1] Status changed from uninitialized to green - Ready
log [20:12:09.196] [info][status][plugin:elasticsearch@6.1.1] Status changed from uninitialized to yellow - Waiting for Elasticsearch
log [20:12:09.257] [info][status][plugin:console@6.1.1] Status changed from uninitialized to green - Ready
log [20:12:09.311] [info][status][plugin:metrics@6.1.1] Status changed from uninitialized to green - Ready
log [20:12:09.985] [info][status][plugin:timelion@6.1.1] Status changed from uninitialized to green - Ready
log [20:12:09.994] [info][listening] Server running at http://192.168.0.17:5601
log [20:12:39.991] [error][status][plugin:elasticsearch@6.1.1] Status changed from yellow to red - Request Timeout after 30000ms

at the same time elasticsearch is working and curl can access it

[root@elk-stack bin]# curl -i http://localhost:9200
HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 432

{
"name" : "s8O4rRA",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "sIHzw9UxQUaa819c8WE-Ew",
"version" : {
"number" : "6.1.1",
"build_hash" : "bd92e7f",
"build_date" : "2017-12-17T20:23:25.338Z",
"build_snapshot" : false,
"lucene_version" : "7.1.0",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}

Please help in troubleshooting the issue

[timroes]

Hey,

thanks for your question. Could you please post your kibana.yml configuration, what is your configured elasticsearch.url.

Are you running inside any (docker) containers? Has the curl be executed from within the Kibana container in that case?

Cheers,
Tim

[dinon]

# 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: "192.168.0.17"
#server.host: "localhost"

# 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://127.0.0.1:9200"

# 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
logging.dest: /var/log/kibana.log

# 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
This is kibana.yml

# 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"

[dinon]

Kibana is running on standard server, not in container, so curl output is from the same server.

here is output of what is displayed when opening the url on port 5601