Secure communication with Elasticsearch
editSecure communication with Elasticsearch
editTo secure the communication between Heartbeat and Elasticsearch, you can use HTTPS and basic authentication. Basic authentication for Elasticsearch is available when you enable X-Pack security (see Secure a cluster and Use security features). If you aren’t using X-Pack security, you can use a web proxy instead.
Here is a sample configuration:
output.elasticsearch: username: heartbeat password: verysecret protocol: https hosts: ["elasticsearch.example.com:9200"]
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The username to use for authenticating to Elasticsearch. |
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The password to use for authenticating to Elasticsearch. |
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This setting enables the HTTPS protocol. |
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The IP and port of the Elasticsearch nodes. |
To obfuscate passwords and other sensitive settings, use the secrets keystore.
Heartbeat 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 Heartbeat uses the list of trusted certificate authorities from the operating system where Heartbeat is running. You can configure Heartbeat 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 Heartbeat to authenticate. Here is an example configuration:
output.elasticsearch: username: heartbeat password: verysecret protocol: https hosts: ["elasticsearch.example.com:9200"] ssl.certificate_authorities: - /etc/pki/my_root_ca.pem - /etc/pki/my_other_ca.pem ssl.certificate: "/etc/pki/client.pem" ssl.key: "/etc/pki/key.pem"
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The list of CA certificates to trust |
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The path to the certificate for SSL client authentication |
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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
include 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 /etc/hosts
(on Unix) or C:\Windows\System32\drivers\etc\hosts (on Windows).