To secure the communication between Metricbeat and Elasticsearch, you can use HTTPS and basic authentication. Here is a sample configuration:
The username to use for authenticating to Elasticsearch.
The password to use for authenticating to Elasticsearch.
This setting enables the HTTPS protocol.
The IP and port of the Elasticsearch nodes.
Elasticsearch doesn’t have built-in basic authentication, but you can achieve it either by using a web proxy or by using X-Pack to secure Elasticsearch. For more information, see the X-Pack documentation about securing Elasticsearch, including the topic about Beats and security.
Metricbeat verifies the validity of the server certificates and only accepts trusted certificates. Creating a correct SSL/TLS infrastructure is outside the scope of this document.
By default Metricbeat uses the list of trusted certificate authorities from the operating system where Metricbeat is running. You can configure Metricbeat to use a specific list of CA certificates instead of the list from the OS. You can also configure it to use client authentication by specifying the certificate and key to use when the server requires the Beat to authenticate. Here is an example configuration:
The list of CA certificates to trust
The path to the certificate for SSL client authentication
The client certificate key
For any given connection, the SSL/TLS certificates must have a subject
that matches the value specified for
hosts, or the SSL handshake fails.
For example, if you specify
hosts: ["foobar:9200"], the certificate MUST
foobar in the subject (
CN=foobar) or as a subject alternative name
(SAN). Make sure the hostname resolves to the correct IP address. If no DNS is available, then
you can associate the IP address with your hostname in
(on Unix) or
C:\Windows\System32\drivers\etc\hosts (on Windows).