Configure InfluxDB Enterprise meta nodes

• Meta node configuration settings
  • Global options
  • Enterprise license [enterprise]
  • Meta node [meta]
  • TLS [tls]

Meta node configuration settings

Global options

reporting-disabled

Default is false.

InfluxData, the company, relies on reported data from running nodes primarily to track the adoption rates of different InfluxDB versions. These data help InfluxData support the continuing development of InfluxDB.

The reporting-disabled option toggles the reporting of data every 24 hours to usage.influxdata.com. Each report includes a randomly-generated identifier, OS, architecture, InfluxDB version, and the number of databases, measurements, and unique series. To disable reporting, set this option to true.

Note: No data from user databases are ever transmitted.

bind-address

Default is "".

This setting is not intended for use. It will be removed in future versions.

hostname

Default is "".

The hostname of the meta node. This must be resolvable and reachable by all other members of the cluster.

Environment variable: INFLUXDB_HOSTNAME

Enterprise license settings

[enterprise]

The [enterprise] section contains the parameters for the meta node’s registration with the InfluxData portal.

license-key

Default is "".

The license key created for you on InfluxData portal. The meta node transmits the license key to portal.influxdata.com over port 80 or port 443 and receives a temporary JSON license file in return. The server caches the license file locally. If your server cannot communicate with https://portal.influxdata.com, you must use the license-path setting.

Use the same key for all nodes in the same cluster.

Note: You must restart meta nodes to update your configuration. For more information, see how to renew or update your license key.

Environment variable: INFLUXDB_ENTERPRISE_LICENSE_KEY

license-path

Default is "".

The local path to the permanent JSON license file that you received from InfluxData for instances that do not have access to the internet. To obtain a license file, contact sales@influxdb.com.

The license file must be saved on every server in the cluster, including meta nodes and data nodes. The file contains the JSON-formatted license, and must be readable by the influxdb user. Each server in the cluster independently verifies its license.

Note: You must restart meta nodes to update your configuration. For more information, see how to renew or update your license key.

Environment variable: INFLUXDB_ENTERPRISE_LICENSE_PATH

Meta node settings

[meta]

dir

Default is "/var/lib/influxdb/meta".

The directory where cluster meta data is stored.

Environment variable: INFLUXDB_META_DIR

bind-address

Default is ":8089".

The bind address(port) for meta node communication. For simplicity, InfluxData recommends using the same port on all meta nodes, but this is not necessary.

Environment variable: INFLUXDB_META_BIND_ADDRESS

http-bind-address

Default is ":8091".

The default address to bind the API to.

Environment variable: INFLUXDB_META_HTTP_BIND_ADDRESS

https-enabled

Default is false.

Determines whether meta nodes use HTTPS to communicate with each other. By default, HTTPS is disabled. We strongly recommend enabling HTTPS.

To enable HTTPS, set https-enabled to true, specify the path to the SSL certificate https-certificate = " ", and specify the path to the SSL private key https-private-key = "".

Environment variable: INFLUXDB_META_HTTPS_ENABLED

https-certificate

Default is "".

If HTTPS is enabled, specify the path to the SSL certificate.
Use either:

• PEM-encoded bundle with both the certificate and key ([bundled-crt-and-key].pem)
• Certificate only ([certificate].crt)

Environment variable: INFLUXDB_META_HTTPS_CERTIFICATE

https-private-key

Default is "".

If HTTPS is enabled, specify the path to the SSL private key. Use either:

• PEM-encoded bundle with both the certificate and key ([bundled-crt-and-key].pem)
• Private key only ([private-key].key)

Environment variable: INFLUXDB_META_HTTPS_PRIVATE_KEY

https-insecure-tls

Default is false.

Whether meta nodes will skip certificate validation communicating with each other over HTTPS. This is useful when testing with self-signed certificates.

Environment variable: INFLUXDB_META_HTTPS_INSECURE_TLS

data-use-tls

Default is false.

Whether to use TLS to communicate with data nodes.

Environment variable: INFLUXDB_META_DATA_USE_TLS

data-insecure-tls

Default is false.

Whether meta nodes will skip certificate validation communicating with data nodes over TLS. This is useful when testing with self-signed certificates.

Environment variable: INFLUXDB_META_DATA_INSECURE_TLS

gossip-frequency

Default is "5s".

The default frequency with which the node will gossip its known announcements.

announcement-expiration

Default is "30s".

The default length of time an announcement is kept before it is considered too old.

retention-autocreate

Default is true.

Automatically create a default retention policy when creating a database.

election-timeout

Default is "1s".

The amount of time in candidate state without a leader before we attempt an election.

heartbeat-timeout

Default is "1s".

The amount of time in follower state without a leader before we attempt an election.

leader-lease-timeout

Default is "500ms".

The leader lease timeout is the amount of time a Raft leader will remain leader if it does not hear from a majority of nodes. After the timeout the leader steps down to the follower state. Clusters with high latency between nodes may want to increase this parameter to avoid unnecessary Raft elections.

Environment variable: INFLUXDB_META_LEADER_LEASE_TIMEOUT

commit-timeout

Default is "50ms".

The commit timeout is the interval that the leader waits between sending messages with the leader’s commit index to followerers. The default setting should work for most systems.

Environment variable: INFLUXDB_META_COMMIT_TIMEOUT

consensus-timeout

Default is "30s".

Timeout waiting for consensus before getting the latest Raft snapshot.

Environment variable: INFLUXDB_META_CONSENSUS_TIMEOUT

cluster-tracing

Default is false.

Log all HTTP requests made to meta nodes. Prints sanitized POST request information to show actual commands.

Sample log output:

ts=2021-12-08T02:00:54.864731Z lvl=info msg=weblog log_id=0YHxBFZG001 service=meta-http host=172.18.0.1 user-id= username=admin method=POST uri=/user protocol=HTTP/1.1 command="{'{\"action\":\"create\",\"user\":{\"name\":\"fipple\",\"password\":[REDACTED]}}': ''}" status=307 size=0 referrer= user-agent=curl/7.68.0 request-id=ad87ce47-57ca-11ec-8026-0242ac120004 execution-time=63.571ms execution-time-readable=63.570738ms
ts=2021-12-08T02:01:00.070137Z lvl=info msg=weblog log_id=0YHxBEhl001 service=meta-http host=172.18.0.1 user-id= username=admin method=POST uri=/user protocol=HTTP/1.1 command="{'{\"action\":\"create\",\"user\":{\"name\":\"fipple\",\"password\":[REDACTED]}}': ''}" status=200 size=0 referrer= user-agent=curl/7.68.0 request-id=b09eb13a-57ca-11ec-800d-0242ac120003 execution-time=85.823ms execution-time-readable=85.823406ms
ts=2021-12-08T02:01:29.062313Z lvl=info msg=weblog log_id=0YHxBEhl001 service=meta-http host=172.18.0.1 user-id= username=admin method=POST uri=/user protocol=HTTP/1.1 command="{'{\"action\":\"create\",\"user\":{\"name\":\"gremch\",\"hash\":[REDACTED]}}': ''}" status=200 size=0 referrer= user-agent=curl/7.68.0 request-id=c1f3614a-57ca-11ec-8015-0242ac120003 execution-time=1.722ms execution-time-readable=1.722089ms
ts=2021-12-08T02:01:47.457607Z lvl=info msg=weblog log_id=0YHxBEhl001 service=meta-http host=172.18.0.1 user-id= username=admin method=POST uri=/user protocol=HTTP/1.1 command="{'{\"action\":\"create\",\"user\":{\"name\":\"gremchy\",\"hash\":[REDACTED]}}': ''}" status=400 size=37 referrer= user-agent=curl/7.68.0 request-id=ccea84b7-57ca-11ec-8019-0242ac120003 execution-time=0.154ms execution-time-readable=154.417µs
ts=2021-12-08T02:02:05.522571Z lvl=info msg=weblog log_id=0YHxBEhl001 service=meta-http host=172.18.0.1 user-id= username=admin method=POST uri=/user protocol=HTTP/1.1 command="{'{\"action\":\"create\",\"user\":{\"name\":\"thimble\",\"password\":[REDACTED]}}': ''}" status=400 size=37 referrer= user-agent=curl/7.68.0 request-id=d7af0082-57ca-11ec-801f-0242ac120003 execution-time=0.227ms execution-time-readable=227.853µs

Environment variable: INFLUXDB_META_CLUSTER_TRACING

logging-enabled

Default is true.

Meta logging toggles the logging of messages from the meta service.

Environment variable: INFLUXDB_META_LOGGING_ENABLED

pprof-enabled

Default is true.

Enables the /debug/pprof endpoint for troubleshooting. To disable, set the value to false.

Environment variable: INFLUXDB_META_PPROF_ENABLED

lease-duration

Default is "1m0s".

The default duration of the leases that data nodes acquire from the meta nodes. Leases automatically expire after the lease-duration is met.

Leases ensure that only one data node is running something at a given time. For example, continuous queries (CQs) use a lease so that all data nodes aren’t running the same CQs at once.

For more details about lease-duration and its impact on continuous queries, see Configuration and operational considerations on a cluster.

Environment variable: INFLUXDB_META_LEASE_DURATION

auth-enabled

Default is false.

If true, HTTP endpoints require authentication. This setting must have the same value as the data nodes’ meta.meta-auth-enabled configuration.

Environment variable: INFLUXDB_META_AUTH_ENABLED

ldap-allowed

Default is false.

Whether LDAP is allowed to be set. If true, you will need to use influxd ldap set-config and set enabled=true to use LDAP authentication.

shared-secret

Default is "".

The shared secret to be used by the public API for creating custom JWT authentication. If you use this setting, set auth-enabled to true.

Environment variable: INFLUXDB_META_SHARED_SECRET

internal-shared-secret

Default is "".

The shared secret used by the internal API for JWT authentication for inter-node communication within the cluster. Set this to a long pass phrase. This value must be the same value as the [meta] meta-internal-shared-secret in the data node configuration file. To use this option, set auth-enabled to true.

Environment variable: INFLUXDB_META_INTERNAL_SHARED_SECRET

password-hash

Default is "bcrypt".

Specifies the password hashing scheme and its configuration.

FIPS-readiness is achieved by specifying an appropriate password hashing scheme, such as pbkdf2-sha256 or pbkdf2-sha512. The configured password hashing scheme and its FIPS readiness are logged on startup of influxd and influxd-meta for verification and auditing purposes.

The configuration is a semicolon delimited list. The first section specifies the password hashing scheme. Optional sections after this are key=value password hash configuration options. Each scheme has its own set of options. Any options not specified default to reasonable values as specified below.

This setting must have the same value as the data node option meta.password-hash.

Environment variable: INFLUXDB_META_PASSWORD_HASH

Example hashing configurations:

Supported password hashing schemes and options:

bcrypt

bcrypt is the default hashing scheme. It is not a FIPS-ready password hashing scheme.

Options:

• cost
  • Specifies the cost of hashing. Number of rounds performed is 2^cost. Higher cost gives greater security at the expense of execution time.
  • Default value: 10
  • Valid range: [4, 31]

pbkdf2-sha256

pbkdf2-sha256 uses the PBKDF2 scheme with SHA-256 as the HMAC function. It is FIPS-ready according to NIST Special Publication 800-132 §5.3 when used with appropriate rounds and salt_len options.

Options:

• rounds
  • Specifies the number of rounds to perform. Higher cost gives greater security at the expense of execution time.
  • Default value: 29000
  • Valid range: [1, 4294967295]
  • Must be greater than or equal to 1000 for FIPS-readiness according to NIST Special Publication 800-132 §5.2.
• salt_len
  • Specifies the salt length in bytes. The longer the salt, the more difficult it is for an attacker to generate a table of password hashes.
  • Default value: 16
  • Valid range: [1, 1024]
  • Must be greater than or equal to 16 for FIPS-readiness according to NIST Special Publication 800-132 §5.1.

pbkdf2-sha512

pbkdf2-sha512 uses the PBKDF2 scheme with SHA-256 as the HMAC function. It is FIPS-ready according to NIST Special Publication 800-132 §5.3 when used with appropriate rounds and salt_len options.

Options:

• rounds
  • Specifies the number of rounds to perform. Higher cost gives greater security at the expense of execution time.
  • Default value: 29000
  • Valid range: [1, 4294967295]
  • Must be greater than or equal to 1000 for FIPS-readiness according to NIST Special Publication 800-132 § 5.2.
• salt_len
  • Specifies the salt length in bytes. The longer the salt, the more difficult it is for an attacker to generate a table of password hashes.
  • Default value: 16
  • Valid range: [1, 1024]
  • Must be greater than or equal to 16 for FIPS-readiness according to NIST Special Publication 800-132 § 5.1.

ensure-fips

Default is false.

If ensure-fips is set to true, then influxd and influxd-meta will refuse to start if they are not configured in a FIPS-ready manner. For example, password-hash = "bcrypt" would not be allowed if ensure-fips = true. ensure-fips gives the administrator extra confidence that their instances are configured in a FIPS-ready manner.

Environment variable: INFLUXDB_META_ENSURE_FIPS

TLS settings

For more information, see TLS settings for data nodes.

Recommended “modern compatibility” cipher settings

ciphers = [ "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305",
            "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305",
            "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
            "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
            "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384"
]

min-version = "tls1.3"

max-version = "tls1.3"