Configure InfluxDB OSS

The InfluxDB open source (OSS) configuration file contains configuration settings specific to a local node.

Content

• Configuration overview
• Environment variables
  • InfluxDB environment variables (INFLUXDB_*)
  • GOMAXPROCS environment variable
• Using the configuration file
• Configuration settings
  • Global settings
  • Metastore [meta]
  • Data [data]
  • Query management [coordinator]
  • Retention policies [retention]
  • Shard precreation [shard-precreation]
  • Monitoring [monitor]
  • HTTP endpoints [http]
  • Subscriptions [subscriber]
  • Graphite [[graphite]]
  • CollectD [[collectd]]
  • OpenTSB [[opentsdb]]
  • UDP [[udp]]
  • Continuous queries [continuous_queries]
  • TLS [tls]

Configuration overview

InfluxDB is configured using the configuration file (influxdb.conf) and environment variables. If you do not uncomment a configuration option, the system uses its default setting. The configuration settings in this document are set to their default settings.

Configuration settings that specify a duration support the following duration units:

• ns (nanoseconds)
• us or µs (microseconds)
• ms (milliseconds)
• s (seconds)
• m (minutes)
• h (hours)
• d (days)
• w (weeks)

Note: Configuration file settings are documented here for the latest official release - the sample configuration file on GitHub might be slightly newer.

Environment variables

All of the configuration settings in the configuration file can be specified either in the configuration file or in an environment variable. The environment variable overrides the equivalent option in the configuration file. If a configuration option is not specified in either the configuration file or in an environment variable, InfluxDB uses its internal default configuration.

Note: If an environment variable has already been set, the equivalent configuration setting in the configuration file is ignored.

InfluxDB environment variables (INFLUXDB_*)

The InfluxDB environment variables are documented below with the corresponding configuration file settings. All of the InfluxDB-specific environment variables are prefixed with INFLUXDB_.

GOMAXPROCS environment variable

Note: The GOMAXPROCS environment variable cannot be set using the InfluxDB configuration file settings, like other environment variables.

The GOMAXPROCS Go language environment variable can be used to set the maximum number of CPUs that can execute simultaneously.

The default value of GOMAXPROCS is the number of CPUs (whatever your operating system considers to be a CPU) that are visible to the program on startup. For a 32-core machine, the GOMAXPROCS value would be 32. You can override this value to be less than the maximum value, which can be useful in cases where you are running the InfluxDB along with other processes on the same machine and want to ensure that the database doesn’t completely starve those processes.

Note: Setting GOMAXPROCS=1 will eliminate all parallelization.

Using the configuration file

The InfluxDB system has internal defaults for all of the settings in the configuration file. To view the default configuration settings, use the influxd config command.

The local InfluxDB configuration file is located here:

• Linux: /etc/influxdb/influxdb.conf
• macOS: /usr/local/etc/influxdb.conf
• Windows: Same directory as influxd.exe

Settings that are commented out are set to the internal system defaults. Uncommented settings override the internal defaults. Note that the local configuration file does not need to include every configuration setting.

There are two ways to launch InfluxDB with your configuration file:

• Point the process to the configuration file by using the -config option. For example:

  influxd -config /etc/influxdb/influxdb.conf
  

• Set the environment variable INFLUXDB_CONFIG_PATH to the path of your configuration file and start the process. For example:

  echo $INFLUXDB_CONFIG_PATH
  /etc/influxdb/influxdb.conf
  
  influxd
  

InfluxDB first checks for the -config option and then for the environment variable.

Configuration settings

Note: To set or override settings in a config section that allows multiple configurations (any section with [[double_brackets]] in the header supports multiple configurations), the desired configuration must be specified by ordinal number. For example, for the first set of [[graphite]] environment variables, prefix the configuration setting name in the environment variable with the relevant position number (in this case: 0):

INFLUXDB_GRAPHITE_0_BATCH_PENDING
INFLUXDB_GRAPHITE_0_BATCH_SIZE
INFLUXDB_GRAPHITE_0_BATCH_TIMEOUT
INFLUXDB_GRAPHITE_0_BIND_ADDRESS
INFLUXDB_GRAPHITE_0_CONSISTENCY_LEVEL
INFLUXDB_GRAPHITE_0_DATABASE
INFLUXDB_GRAPHITE_0_ENABLED
INFLUXDB_GRAPHITE_0_PROTOCOL
INFLUXDB_GRAPHITE_0_RETENTION_POLICY
INFLUXDB_GRAPHITE_0_SEPARATOR
INFLUXDB_GRAPHITE_0_TAGS
INFLUXDB_GRAPHITE_0_TEMPLATES
INFLUXDB_GRAPHITE_0_UDP_READ_BUFFER

For the Nth Graphite configuration in the configuration file, the relevant environment variables would be of the form INFLUXDB_GRAPHITE_(N-1)_BATCH_PENDING. For each section of the configuration file the numbering restarts at zero.

Global settings

reporting-disabled = false

InfluxData uses voluntarily reported data from running InfluxDB nodes primarily to track the adoption rates of different InfluxDB versions. This data helps 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. Setting this option to true will disable reporting.

Note: No data from user databases is ever transmitted.

Environment variable: INFLUXDB_REPORTING_DISABLED

bind-address = "127.0.0.1:8088"

The bind address to use for the RPC service for backup and restore.

Environment variable: INFLUXDB_BIND_ADDRESS

Metastore settings

[meta]

This section controls parameters for the InfluxDB metastore, which stores information on users, databases, retention policies, shards, and continuous queries.

dir = "/var/lib/influxdb/meta"

The directory where the metadata/raft database is stored. Files in the meta directory include meta.db, the InfluxDB metastore file.

Note: The default directory for macOS installations is /Users/<username>/.influxdb/meta

Environment variable: INFLUXDB_META_DIR

retention-autocreate = true

Enables the automatic creation of the DEFAULT retention policy autogen when a database is created. The retention policy autogen has an infinite duration and is also set as the database’s DEFAULT retention policy, which is used when a write or query does not specify a retention policy. Disable this setting to prevent the creation of this retention policy when creating databases.

Environment variable: INFLUXDB_META_RETENTION_AUTOCREATE

logging-enabled = true

Enables the logging of messages from the meta service.

Environment variable: INFLUXDB_META_LOGGING_ENABLED

Data settings

[data]

The [data] settings control where the actual shard data for InfluxDB lives and how it is flushed from the Write-Ahead Log (WAL). dir may need to be changed to a suitable place for your system, but the WAL settings are an advanced configuration. The defaults should work for most systems.

dir = "/var/lib/influxdb/data"

The InfluxDB directory where the TSM engine stores TSM files. This directory may be changed.

Note: The default directory for macOS installations is /Users/<username>/.influxdb/data.

Environment variable: INFLUXDB_DATA_DIR

wal-dir = "/var/lib/influxdb/wal"

The location of the directory for write ahead log (WAL) files.

Note: For macOS installations, the default WAL directory is /Users/<username>/.influxdb/wal.

Environment variable: INFLUXDB_DATA_WAL_DIR

wal-fsync-delay = "0s"

The amount of time that a write waits before fsyncing. Use a duration greater than 0 to batch up multiple fsync calls. This is useful for slower disks or when experiencing WAL write contention. The default value of 0s fsyncs every write to the WAL.

Note: For non-SSD disks, InfluxData recommends values in the range of 0ms-100ms.

Environment variable: INFLUXDB_DATA_WAL_FSYNC_DELAY

index-version = "inmem"

The type of shard index to use for new shards. The default (inmem) index is an in-memory index that is recreated at startup. To enable the Time Series Index (TSI) disk-based index, set the value to tsi1.

Environment variable: INFLUXDB_DATA_INDEX_VERSION

trace-logging-enabled = false

Enables verbose logging of additional debug information within the TSM engine and WAL. The trace logging provide more useful output for debugging TSM engine issues.

Environment variable: INFLUXDB_DATA_TRACE_LOGGING_ENABLED

query-log-enabled = true

Enables the logging of parsed queries before execution. The query log can be useful for troubleshooting, but logs any sensitive data contained within a query.

Environment variable: INFLUXDB_DATA_QUERY_LOG_ENABLED

validate-keys = false

Validates incoming writes to ensure measurement keys and tag keys only have valid Unicode characters. This setting will incur a small overhead because every key must be checked. This will not validate field keys.

Settings for the TSM engine

cache-max-memory-size = "1g"

The maximum size that a shard cache can reach before it starts rejecting writes.

Valid memory size suffixes are: k, m, or g (case-insensitive, 1024 = 1k). Values without a size suffix are in bytes.

Environment variable: INFLUXDB_DATA_CACHE_MAX_MEMORY_SIZE

cache-snapshot-memory-size = "25m"

The size at which the engine will snapshot the cache and write it to a TSM file, freeing up memory.

Valid memory size suffixes are: k, m, or g (case-insensitive, 1024 = 1k). Values without a size suffix are in bytes.

Environment variable: INFLUXDB_DATA_CACHE_SNAPSHOT_MEMORY_SIZE

cache-snapshot-write-cold-duration = "10m"

The time interval at which the engine will snapshot the cache and write it to a new TSM file if the shard hasn’t received writes or deletes.

Environment variable: INFLUXDB_DATA_CACHE_SNAPSHOT_WRITE_COLD_DURATION

compact-full-write-cold-duration = "4h"

The time interval at which the TSM engine will compact all TSM files in a shard if it hasn’t received a write or delete.

Environment variable: INFLUXDB_DATA_COMPACT_FULL_WRITE_COLD_DURATION

max-concurrent-compactions = 0

The maximum number of concurrent full and level compactions that can run at one time. The default value of 0 results in 50% of the CPU cores being used at runtime for compactions. If explicitly set, the number of cores used for compaction is limited to the specified value. This setting does not apply to cache snapshotting. For more information on GOMAXPROCS environment variable, see GOMAXPROCS environment variable on this page.

Environment variable: INFLUXDB_DATA_MAX_CONCURRENT_COMPACTIONS

compact-throughput = "48m"

The maximum number of bytes per seconds TSM compactions write to disk. Default is "48m" (48 million). Note that short bursts are allowed to happen at a possibly larger value, set by compact-throughput-burst.

Environment variable: INFLUXDB_DATA_COMPACT_THROUGHPUT

compact-throughput-burst = "48m"

The maximum number of bytes per seconds TSM compactions write to disk during brief bursts. Default is "48m" (48 million).

Environment variable: INFLUXDB_DATA_COMPACT_THROUGHPUT_BURST

tsm-use-madv-willneed = false

If true, then the MMap Advise value MADV_WILLNEED advises the kernel about how to handle the mapped memory region in terms of input/output paging and to expect access to the mapped memory region in the near future, with respect to TSM files. Because this setting has been problematic on some kernels (including CentOS and RHEL ), the default is false. Changing the value to true might help users who have slow disks in some cases.

Environment variable: INFLUXDB_DATA_TSM_USE_MADV_WILLNEED

In-memory (inmem) index settings

max-series-per-database = 1000000

The maximum number of series allowed per database before writes are dropped. The default setting is 1000000 (one million). Change the setting to 0 to allow an unlimited number of series per database.

If a point causes the number of series in a database to exceed max-series-per-database, InfluxDB will not write the point, and it returns a 500 with the following error:

{"error":"max series per database exceeded: <series>"}

Note: Any existing databases with a series count that exceeds max-series-per-database will continue to accept writes to existing series, but writes that create a new series will fail.

Environment variable: INFLUXDB_DATA_MAX_SERIES_PER_DATABASE

max-values-per-tag = 100000

The maximum number of tag values allowed per tag key. The default value is 100000 (one hundred thousand). Change the setting to 0 to allow an unlimited number of tag values per tag key. If a tag value causes the number of tag values of a tag key to exceed max-values-per-tag, then InfluxDB will not write the point, and it returns a partial write error.

Any existing tag keys with tag values that exceed max-values-per-tag will continue to accept writes, but writes that create a new tag value will fail.

Environment variable: INFLUXDB_DATA_MAX_VALUES_PER_TAG

TSI (tsi1) index settings

max-index-log-file-size = "1m"

The threshold, in bytes, when an index write-ahead log (WAL) file will compact into an index file. Lower sizes will cause log files to be compacted more quickly and result in lower heap usage at the expense of write throughput. Higher sizes will be compacted less frequently, store more series in-memory, and provide higher write throughput. Valid size suffixes are k, m, or g (case-insensitive, 1024 = 1k). Values without a size suffix are in bytes.

Environment variable: INFLUXDB_DATA_MAX_INDEX_LOG_FILE_SIZE

series-id-set-cache-size = 100

The size of the internal cache used in the TSI index to store previously calculated series results. Cached results will be returned quickly from the cache rather than needing to be recalculated when a subsequent query with a matching tag key-value predicate is executed. Setting this value to 0 will disable the cache, which may lead to query performance issues. This value should only be increased if it is known that the set of regularly used tag key-value predicates across all measurements for a database is larger than 100. An increase in cache size may lead to an increase in heap usage.

Environment variable: INFLUXDB_DATA_SERIES_ID_SET_CACHE_SIZE

Query management settings

[coordinator]

This section contains configuration settings for query management. For more on managing queries, see Query Management.

write-timeout = "10s"

The duration a write request waits until a “timeout” error is returned to the caller. The default value is 10 seconds.

Environment variable: INFLUXDB_COORDINATOR_WRITE_TIMEOUT

max-concurrent-queries = 0

The maximum number of running queries allowed on your instance. The default setting (0) allows for an unlimited number of queries.

Environment variable: INFLUXDB_COORDINATOR_MAX_CONCURRENT_QUERIES

query-timeout = "0s"

The maximum duration that a query is allowed to execute before InfluxDB kills the query. The default setting (0) allows queries to run with no time restrictions. This setting is a duration.

Environment variable: INFLUXDB_COORDINATOR_QUERY_TIMEOUT

log-queries-after = "0s"

The maximum duration that a query can until InfluxDB logs the query with a Detected slow query message. The default setting ("0") will never tell InfluxDB to log the query. This setting is a duration.

Environment variable: INFLUXDB_COORDINATOR_LOG_QUERIES_AFTER

max-select-point = 0

The maximum number of points that a SELECT statement can process. The default setting (0) allows the SELECT statement to process an unlimited number of points.

Environment variable: INFLUXDB_COORDINATOR_MAX_SELECT_POINT

max-select-series = 0

The maximum number of series that a SELECT statement can process. The default setting (0) allows the SELECT statement to process an unlimited number of series.

Environment variable: INFLUXDB_COORDINATOR_MAX_SELECT_SERIES

max-select-buckets = 0

The maximum number of GROUP BY time() buckets that a query can process. The default setting (0) allows a query to process an unlimited number of buckets.

Environment variable: INFLUXDB_COORDINATOR_MAX_SELECT_BUCKETS

Retention policy settings

[retention]

The [retention] settings control the enforcement of retention policies for evicting old data.

enabled = true

Set to false to prevent InfluxDB from enforcing retention policies.

Environment variable: INFLUXDB_RETENTION_ENABLED

check-interval = "30m0s"

The time interval at which InfluxDB checks to enforce a retention policy.

Environment variable: INFLUXDB_RETENTION_CHECK_INTERVAL

Shard precreation settings

[shard-precreation]

The [shard-precreation] settings control the precreation of shards so that shards are available before data arrive. Only shards that, after creation, will have both a start- and end-time in the future are ever created. Shards that would be wholly or partially in the past are never precreated.

enabled = true

Determines whether the shard precreation service is enabled.

Environment variable: INFLUXDB_SHARD_PRECREATION_ENABLED

check-interval = "10m"

The time interval when the check to precreate new shards runs.

Environment variable: INFLUXDB_SHARD_PRECREATION_CHECK_INTERVAL

advance-period = "30m"

The maximum period in the future for which InfluxDB precreates shards. The 30m default should work for most systems. Increasing this setting too far in the future can cause inefficiencies.

Environment variable: INFLUXDB_SHARD_PRECREATION_ADVANCE_PERIOD

Monitoring settings

[monitor]

The [monitor] section settings control the InfluxDB system self-monitoring.

By default, InfluxDB writes the data to the _internal database. If that database does not exist, InfluxDB creates it automatically. The DEFAULT retention policy on the _internal database is seven days. If you want to use a retention policy other than the seven-day retention policy, you must create it.

store-enabled = true

Set to false to disable recording statistics internally. If set to false it will make it substantially more difficult to diagnose issues with your installation.

Environment variable: INFLUXDB_MONITOR_STORE_ENABLED

store-database = "_internal"

The destination database for recorded statistics.

Environment variable: INFLUXDB_MONITOR_STORE_DATABASE

store-interval = "10s"

The time interval at which InfluxDB records statistics. The default value is every ten seconds (10s).

Environment variable: INFLUXDB_MONITOR_STORE_INTERVAL

HTTP endpoints settings

[http]

The [http] section settings control how InfluxDB configures the HTTP endpoints. These are the primary mechanisms for getting data into and out of InfluxDB. Edit the settings in this section to enable HTTPS and authentication.

For details on enabling HTTPS and authentication, see Authentication and Authorization.

enabled = true

Determines whether the HTTP endpoints are enabled. To disable access to the HTTP endpoints, set the value to false. Note that the InfluxDB command line interface (CLI) connects to the database using the InfluxDB API.

Environment variable: INFLUXDB_HTTP_ENABLED

flux-enabled = false

Determines whether the Flux query endpoint is enabled. To enable the use of Flux queries, set the value to true.

Environment variable: INFLUXDB_HTTP_FLUX_ENABLED

bind-address = ":8086"

The bind address (port) used by the HTTP service.

Environment variable: INFLUXDB_HTTP_BIND_ADDRESS

auth-enabled = false

Determines whether user authentication is enabled over HTTP and HTTPS. To require authentication, set the value to true.

Environment variable: INFLUXDB_HTTP_AUTH_ENABLED

realm = "InfluxDB"

The default realm sent back when issuing a basic authentication challenge. The realm is the JWT realm used by the HTTP endpoints.

Environment variable: INFLUXDB_HTTP_REALM

log-enabled = true

Determines whether HTTP request logging is enabled. To disable logging, set the value to false.

Environment variable: INFLUXDB_HTTP_LOG_ENABLED

suppress-write-log = false

Determines whether the HTTP write request logs should be suppressed when the log is enabled.

access-log-path = ""

The path to the access log, which determines whether detailed write logging is enabled using log-enabled = true. Specifies whether HTTP request logging is written to the specified path when enabled. If influxd is unable to access the specified path, it will log an error and fall back to stderr. When HTTP request logging is enabled, this option specifies the path where log entries should be written. If unspecified, the default is to write to stderr, which intermingles HTTP logs with internal InfluxDB logging. If influxd is unable to access the specified path, it will log an error and fall back to writing the request log to stderr.

Environment variable: INFLUXDB_HTTP_ACCESS_LOG_PATH

access-log-status-filters = []

Filters which requests should be logged. Each filter is of the pattern nnn, nnx, or nxx where n is a number and x is the wildcard for any number. To filter all 5xx responses, use the string 5xx. If multiple filters are used, then only one has to match. The default value is no filters, with every request being printed.

Environment variable: INFLUXDB_HTTP_ACCESS_LOG_STATUS_FILTERS_x

Examples

Setting access log status filters using configuration settings

access-log-status-filters = ["4xx", "5xx"]

"4xx" is in array position 0 "5xx" is in array position 1

Setting access log status filters using environment variables

The input values for the access-log-status-filters is an array. When using environment variables, the values can be supplied as follows.

INFLUXDB_HTTP_ACCESS_LOG_STATUS_FILTERS_0=4xx

INFLUXDB_HTTP_ACCESS_LOG_STATUS_FILTERS_1=5xx

The _n at the end of the environment variable represents the array position of the entry.

write-tracing = false

Determines whether detailed write logging is enabled. Set to true to enable logging for the write payload. If set to true, this will duplicate every write statement in the logs and is thus not recommended for general use.

Environment variable: INFLUXDB_HTTP_WRITE_TRACING

pprof-enabled = true

Determines whether the /net/http/pprof HTTP endpoint is enabled. Useful for troubleshooting and monitoring.

Environment variable: INFLUXDB_HTTP_PPROF_ENABLED

pprof-auth-enabled = false

Enables authentication on /debug endpoints. If enabled, users need admin permissions to access the following endpoints:

• /debug/pprof
• /debug/requests
• /debug/vars

This setting has no effect if either auth-enabled or pprof-enabled are set to false.

Environment variable: INFLUXDB_HTTP_PPROF_AUTH_ENABLED

debug-pprof-enabled = false

Enable the default /pprof endpoint and bind against localhost:6060. Useful for debugging startup performance issues.

Environment variable: INFLUXDB_HTTP_DEBUG_PPROF_ENABLED

ping-auth-enabled = false

Enables authentication on the /ping, /metrics, and deprecated /status endpoints. This setting has no effect if auth-enabled is set to false.

Environment variable: INFLUXDB_HTTP_PING_AUTH_ENABLED

http-headers

User-supplied HTTP response headers. Configure this section to return security headers such as X-Frame-Options or Content Security Policy where needed.

Example:

[http.headers]
  X-Frame-Options = "DENY"

https-enabled = false

Determines whether HTTPS is enabled. To enable HTTPS, set the value to true.

Environment variable: INFLUXDB_HTTP_HTTPS_ENABLED

https-certificate = "/etc/ssl/influxdb.pem"

The path of the SSL certificate file to use when HTTPS is enabled.

Environment variable: INFLUXDB_HTTP_HTTPS_CERTIFICATE

https-private-key = ""

Use a separate private key location. If only the https-certificate is specified, the httpd service will try to load the private key from the https-certificate file. If a separate https-private-key file is specified, the httpd service will load the private key from the https-private-key file.

Environment variable: INFLUXDB_HTTP_HTTPS_PRIVATE_KEY

shared-secret = ""

The shared secret used to validate public API requests using JWT tokens.

Environment variable: INFLUXDB_HTTP_SHARED_SECRET

max-row-limit = 0

The maximum number of rows that the system can return in a non-chunked query. The default setting (0) allows for an unlimited number of rows. If the query results exceed a specified value, then InfluxDB includes a "partial":true tag in the response body.

Environment variable: INFLUXDB_HTTP_MAX_ROW_LIMIT

max-connection-limit = 0

The maximum number of connections that may be open at once. New connections that would exceed the limit are dropped.
The default value of 0 disables the limit.

Environment variable: INFLUXDB_HTTP_MAX_CONNECTION_LIMIT

unix-socket-enabled = false

Enable HTTP service over the UNIX domain socket. To enable HTTP service over the UNIX domain socket, set the value to true.

Environment variable: INFLUXDB_HTTP_UNIX_SOCKET_ENABLED

bind-socket = "/var/run/influxdb.sock"

The path of the UNIX domain socket.

Environment variable: INFLUXDB_HTTP_UNIX_BIND_SOCKET

max-body-size = 25000000

The maximum size, in bytes, of a client request body. When a HTTP client sends data that exceeds the configured maximum size, a 413 Request Entity Too Large HTTP response is returned. To disable the limit, set the value to 0.

Environment variable: INFLUXDB_HTTP_MAX_BODY_SIZE

max-concurrent-write-limit = 0

The maximum number of writes that can be processed concurrently. To disable the limit, set the value to 0.

Environment variable: INFLUXDB_HTTP_MAX_CONCURRENT_WRITE_LIMIT

max-enqueued-write-limit = 0

The maximum number of writes queued for processing. To disable the limit, set the value to 0.

Environment variable: INFLUXDB_HTTP_MAX_ENQUEUED_WRITE_LIMIT

enqueued-write-timeout = 0

The maximum duration for a write to wait in the queue to be processed. To disable the limit, set this to 0 or set the max-concurrent-write-limit value to 0.

Environment variable: INFLUXDB_HTTP_ENQUEUED_WRITE_TIMEOUT

[http.headers]

Use the [http.headers] section to configure user-supplied HTTP response headers.

# [http.headers]
#   X-Header-1 = "Header Value 1"
#   X-Header-2 = "Header Value 2"

Logging settings

[logging]

Controls how the logger emits logs to the output.

format = "auto"

Determines which log encoder to use for logs. Valid values are auto(default), logfmt, and json. With the default auto option, if the output is to a TTY device (e.g., a terminal), a more user-friendly console encoding is used. If the output is to files, the auto option uses the logfmt encoding. The logfmt and json options are useful for integration with external tools.

Environment variable: INFLUXDB_LOGGING_FORMAT

level = "info"

The log level to be emitted. Valid values are error, warn, info(default), and debug. Logs that are equal to, or above, the specified level will be emitted.

Environment variable: INFLUXDB_LOGGING_LEVEL

suppress-logo = false

Suppresses the logo output that is printed when the program is started. The logo is always suppressed if STDOUT is not a TTY.

Environment variable: INFLUXDB_LOGGING_SUPPRESS_LOGO

Subscription settings

[subscriber]

The [subscriber] section controls how Kapacitor will receive data.

enabled = true

Determines whether the subscriber service is enabled. To disable the subscriber service, set the value to false.

Environment variable: INFLUXDB_SUBSCRIBER_ENABLED

http-timeout = "30s"

The duration that an HTTP write to a subscriber runs until it times out.

Environment variable: INFLUXDB_SUBSCRIBER_HTTP_TIMEOUT

insecure-skip-verify = false

Determines whether to allow insecure HTTPS connections to subscribers. This is useful when testing with self-signed certificates.

Environment variable: INFLUXDB_SUBSCRIBER_INSECURE_SKIP_VERIFY

ca-certs = ""

The path to the PEM-encoded CA certs file. If the value is an empty string (""), the default system certs will be used.

Environment variable: INFLUXDB_SUBSCRIBER_CA_CERTS

write-concurrency = 40

The number of writer goroutines processing the write channel.

Environment variable: INFLUXDB_SUBSCRIBER_WRITE_CONCURRENCY

write-buffer-size = 1000

The number of in-flight writes buffered in the write channel.

Environment variable: INFLUXDB_SUBSCRIBER_WRITE_BUFFER_SIZE

Graphite settings

[[graphite]]

This section controls one or many listeners for Graphite data. For more information, see Graphite protocol support in InfluxDB.

enabled = false

Set to true to enable Graphite input.

Environment variable: INFLUXDB_GRAPHITE_0_ENABLED

database = "graphite"

The name of the database that you want to write to.

Environment variable: INFLUXDB_GRAPHITE_0_DATABASE

retention-policy = ""

The relevant retention policy. An empty string is equivalent to the database’s DEFAULT retention policy.

Environment variable: INFLUXDB_GRAPHITE_0_RETENTION_POLICY

bind-address = ":2003"

The default port.

Environment variable: INFLUXDB_GRAPHITE_0_BIND_ADDRESS

protocol = "tcp"

Set to tcp or udp.

Environment variable: INFLUXDB_GRAPHITE_PROTOCOL

consistency-level = "one"

The number of nodes that must confirm the write. If the requirement is not met the return value will be either partial write if some points in the batch fail or write failure if all points in the batch fail. For more information, see the Query String Parameters for Writes section in the InfluxDB line protocol syntax reference.

Environment variable: INFLUXDB_GRAPHITE_CONSISTENCY_LEVEL

The next three settings control how batching works. You should have this enabled otherwise you could get dropped metrics or poor performance. Batching will buffer points in memory if you have many coming in.

batch-size = 5000

The input will flush if this many points get buffered.

Environment variable: INFLUXDB_GRAPHITE_BATCH_SIZE

batch-pending = 10

The number of batches that may be pending in memory.

Environment variable: INFLUXDB_GRAPHITE_BATCH_PENDING

batch-timeout = "1s"

The input will flush at least this often even if it hasn’t reached the configured batch-size.

Environment variable: INFLUXDB_GRAPHITE_BATCH_TIMEOUT

udp-read-buffer = 0

UDP Read buffer size, 0 means OS default. UDP listener will fail if set above OS max.

Environment variable: INFLUXDB_GRAPHITE_UDP_READ_BUFFER

separator = "."

This string joins multiple matching ‘measurement’ values providing more control over the final measurement name.

Environment variable: INFLUXDB_GRAPHITE_SEPARATOR

CollectD settings

[[collectd]]

The [[collectd]] settings control the listener for collectd data. For more information, see CollectD protocol support in InfluxDB.

enabled = false

Set to true to enable collectd writes.

Environment variable: INFLUXDB_COLLECTD_ENABLED

bind-address = ":25826"

The port.

Environment variable: INFLUXDB_COLLECTD_BIND_ADDRESS

database = "collectd"

The name of the database that you want to write to. This defaults to collectd.

Environment variable: INFLUXDB_COLLECTD_DATABASE

retention-policy = ""

The relevant retention policy. An empty string is equivalent to the database’s DEFAULT retention policy.

Environment variable: INFLUXDB_COLLECTD_RETENTION_POLICY

typesdb = "/usr/local/share/collectd"

The collectd service supports either scanning a directory for multiple types db files, or specifying a single db file. A sample types.db file can be found here.

Environment variable: INFLUXDB_COLLECTD_TYPESDB

security-level = "none"

Environment variable: INFLUXDB_COLLECTD_SECURITY_LEVEL

auth-file = "/etc/collectd/auth_file"

Environment variable: INFLUXDB_COLLECTD_AUTH_FILE

The next three settings control how batching works. You should have this enabled otherwise you could get dropped metrics or poor performance. Batching will buffer points in memory if you have many coming in.

batch-size = 5000

The input will flush if this many points get buffered.

Environment variable: INFLUXDB_COLLECTD_BATCH_SIZE

batch-pending = 10

The number of batches that may be pending in memory.

Environment variable: INFLUXDB_COLLECTD_BATCH_PENDING

batch-timeout = "10s"

The input will flush at least this often even if it hasn’t reached the configured batch-size.

Environment variable: INFLUXDB_COLLECTD_BATCH_TIMEOUT

read-buffer = 0

UDP Read buffer size, 0 means OS default. UDP listener will fail if set above OS max.

Environment variable: INFLUXDB_COLLECTD_READ_BUFFER

parse-multivalue-plugin = "split"

When set to split, multi-value plugin data (e.g. df free:5000,used:1000) will be split into separate measurements (e.g., (df_free, value=5000) (df_used, value=1000)). When set to join, multi-value plugin will be stored as a single multi-value measurement (e.g., (df, free=5000,used=1000)). Defaults to split.

OpenTSDB settings

[[opentsdb]]

Controls the listener for OpenTSDB data. For more information, see OpenTSDB protocol support in InfluxDB.

enabled = false

Set to true to enable openTSDB writes.

Environment variable: INFLUXDB_OPENTSDB_0_ENABLED

bind-address = ":4242"

The default port.

Environment variable: INFLUXDB_OPENTSDB_BIND_ADDRESS

database = "opentsdb"

The name of the database that you want to write to. If the database does not exist, it will be created automatically when the input is initialized.

Environment variable: INFLUXDB_OPENTSDB_DATABASE

retention-policy = ""

The relevant retention policy. An empty string is equivalent to the database’s DEFAULT retention policy.

Environment variable: INFLUXDB_OPENTSDB_RETENTION_POLICY

consistency-level = "one"

Sets the write consistency level: any, one, quorum, or all for writes.

Environment variable: INFLUXDB_OPENTSDB_CONSISTENCY_LEVEL

tls-enabled = false

Environment variable: INFLUXDB_OPENTSDB_TLS_ENABLED

certificate = "/etc/ssl/influxdb.pem"

Environment variable: INFLUXDB_OPENTSDB_CERTIFICATE

log-point-errors = true

Log an error for every malformed point.

Environment variable: INFLUXDB_OPENTSDB_0_LOG_POINT_ERRORS

The next three settings control how batching works. You should have this enabled otherwise you could get dropped metrics or poor performance. Only points metrics received over the telnet protocol undergo batching.

batch-size = 1000

The input will flush if this many points get buffered.

Environment variable: INFLUXDB_OPENTSDB_BATCH_SIZE

batch-pending = 5

The number of batches that may be pending in memory.

Environment variable: INFLUXDB_OPENTSDB_BATCH_PENDING

batch-timeout = "1s"

The input will flush at least this often even if it hasn’t reached the configured batch-size.

Environment variable: INFLUXDB_OPENTSDB_BATCH_TIMEOUT

UDP settings

[[udp]]

The [[udp]] settings control the listeners for InfluxDB line protocol data using UDP. For more information, see UDP protocol support in InfluxDB.

enabled = false

Determines whether UDP listeners are enabled. To enable writes over UDP, set the value to true.

Environment variable: INFLUXDB_UDP_ENABLED

bind-address = ":8089"

An empty string is equivalent to 0.0.0.0.

Environment variable: INFLUXDB_UDP_BIND_ADDRESS

database = "udp"

The name of the database that you want to write to.

Environment variable: INFLUXDB_UDP_DATABASE

retention-policy = ""

The relevant retention policy for your data. An empty string is equivalent to the database’s DEFAULT retention policy.

Environment variable: INFLUXDB_UDP_RETENTION_POLICY

The next three settings control how batching works. You should have this enabled otherwise you could get dropped metrics or poor performance. Batching will buffer points in memory if you have many coming in.

batch-size = 5000

The input will flush if this many points get buffered.

Environment variable: INFLUXDB_UDP_0_BATCH_SIZE

batch-pending = 10

The number of batches that may be pending in memory.

Environment variable: INFLUXDB_UDP_0_BATCH_PENDING

batch-timeout = "1s"

The input will flush at least this often even if it hasn’t reached the configured batch-size.

Environment variable: INFLUXDB_UDP_BATCH_TIMEOUT

read-buffer = 0

UDP read buffer size, 0 means OS default. UDP listener will fail if set above OS max.

Environment variable: INFLUXDB_UDP_BATCH_SIZE

precision = ""

Time precision used when decoding time values. Defaults to nanoseconds which is the default of the database.

Environment variable: INFLUXDB_UDP_PRECISION

Continuous queries settings

[continuous_queries]

The [continuous_queries] settings control how continuous queries (CQs) run within InfluxDB. Continuous queries are automated batches of queries that execute over recent time intervals. InfluxDB executes one auto-generated query per GROUP BY time() interval.

enabled = true

Set to false to disable CQs.

Environment variable: INFLUXDB_CONTINUOUS_QUERIES_ENABLED

log-enabled = true

Set to false to disable logging for CQ events.

Environment variable: INFLUXDB_CONTINUOUS_QUERIES_LOG_ENABLED

query-stats-enabled = false

When set to true, continuous query execution statistics are written to the default monitor store.

Environment variable: INFLUXDB_CONTINUOUS_QUERIES_QUERY_STATS_ENABLED

run-interval = "1s"

The interval at which InfluxDB checks to see if a CQ needs to run. Set this option to the lowest interval at which your CQs run. For example, if your most frequent CQ runs every minute, set run-interval to 1m.

Environment variable: INFLUXDB_CONTINUOUS_QUERIES_RUN_INTERVAL

Transport Layer Security (TLS) settings

[tls]

Global configuration settings for Transport Layer Security (TLS) in InfluxDB. For more information, see Enabling HTTPS.

If the TLS configuration settings is not specified, InfluxDB supports all of the cipher suite IDs listed and all TLS versions implemented in the Constants section of the Go crypto/tls package documentation, depending on the version of Go used to build InfluxDB. Use the SHOW DIAGNOSTICS command to see the version of Go used to build InfluxDB.

Recommended server configuration for “modern compatibility”

InfluxData recommends configuring your InfluxDB server’s TLS settings for “modern compatibility.” This provides a higher level of security and assumes that backward compatibility is not required. Our recommended TLS configuration settings for ciphers, min-version, and max-version are based on Mozilla’s “modern compatibility” TLS server configuration described in Security/Server Side TLS.

InfluxData’s recommended TLS settings for “modern compatibility” are specified in the following configuration settings example:

ciphers = [ "TLS_AES_128_GCM_SHA256",
            "TLS_AES_256_GCM_SHA384",
            "TLS_CHACHA20_POLY1305_SHA256"
]

min-version = "tls1.3"

max-version = "tls1.3"

Important: The order of the cipher suite IDs in the ciphers setting determines which algorithms are selected by priority. The TLS min-version and the max-version settings restrict support to TLS 1.3.

ciphers = [ "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305", "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256", ]

Specifies the set of cipher suite IDs to negotiate. If not specified, ciphers supports all existing cipher suite IDs listed in the Go crypto/tls package. This is consistent with the behavior within previous releases. In this example, only the two specified cipher suite IDs would be supported.

Environment variable: INFLUXDB_TLS_CIPHERS

min-version = "tls1.0"

Minimum version of the TLS protocol that will be negotiated. Valid values include: tls1.0, tls1.1, tls1.2, and tls1.3. If not specified, min-version is the minimum TLS version specified in the Go crypto/tls package. In this example, tls1.0 specifies the minimum version as TLS 1.0, which is consistent with the behavior of previous InfluxDB releases.

Environment variable: INFLUXDB_TLS_MIN_VERSION

max-version = "tls1.3"

The maximum version of the TLS protocol that will be negotiated. Valid values include: tls1.0, tls1.1, tls1.2, and tls1.3. If not specified, max-version is the maximum TLS version specified in the Go crypto/tls package. In this example, tls1.3 specifies the maximum version as TLS 1.3, which is consistent with the behavior of previous InfluxDB releases.

Environment variable: INFLUXDB_TLS_MAX_VERSION