01-初识InfluxDB

初识InfluxDB

1. InfluxDB介绍

时间序列数据库，简称时序数据库，Time Series Database，一个全新的领域，最大的特点就是每个条数据都带有Time列。

时序数据库到底能用到什么业务场景，答案是：监控系统。

InfluxDB是一个当下比较流行的时序数据库，InfluxDB使用 Go 语言编写，无需外部依赖，安装配置非常方便，适合构建大型分布式系统的监控系统。

2. 安装方法

2.1 linux版本

软件包：influxdb-1.7.7.x86_64.rpm

安装命令：yum localinstall influxdb-1.7.7.x86_64.rpm

2.2 常用命令

/usr/bin/influxd influxdb服务器

/usr/bin/influx influxdb命令行客户端

/usr/bin/influx_inspect 查看工具

/usr/bin/influx_stress 压力测试工具

/usr/bin/influx_tsm 数据库转换工具（将数据库从b1或bz1格式转换为tsm1格式）

2.3 常用目录

/var/lib/influxdb/data 存放最终存储的数据，文件以.tsm结尾

/var/lib/influxdb/meta 存放数据库元数据

/var/lib/influxdb/wal 存放预写日志文件

2.4 配置文件

路径 /etc/influxdb/influxdb.conf 

### Welcome to the InfluxDB configuration file.

# The values in this file override the default values used by the system if
# a config option is not specified. The commented out lines are the configuration
# field and the default value used. Uncommenting a line and changing the value
# will change the value used at runtime when the process is restarted.

# Once every 24 hours InfluxDB will report usage data to usage.influxdata.com
# The data includes a random ID, os, arch, version, the number of series and other
# usage data. No data from user databases is ever transmitted.
# Change this option to true to disable reporting.
# 该选项用于上报influxdb的使用信息给InfluxData公司，默认值为false
# reporting-disabled = false

# Bind address to use for the RPC service for backup and restore.
# 备份恢复时使用，默认值为8088
# bind-address = "127.0.0.1:8088"

###
### [meta]
###
### Controls the parameters for the Raft consensus group that stores metadata
### about the InfluxDB cluster.
###

[meta]
  # Where the metadata/raft database is stored
  # meta数据存放目录，默认值：/var/lib/influxdb/meta
  dir = "/var/lib/influxdb/meta"

  # Automatically create a default retention policy when creating a database.
  # 用于控制默认存储策略，数据库创建时，会自动生成autogen的存储策略，默认值：true
  # retention-autocreate = true

  # If log messages are printed for the meta service
  # 是否开启日志，默认值：true
  # logging-enabled = true

###
### [data]
###
### Controls where the actual shard data for InfluxDB lives and how it is
### flushed from the 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.
###

[data]
  # The directory where the TSM storage engine stores TSM files.
  # 最终数据（TSM文件）存储目录，默认值：/var/lib/influxdb/data
  dir = "/var/lib/influxdb/data"

  # The directory where the TSM storage engine stores WAL files.
  # 预写日志存储目录，默认值：/var/lib/influxdb/wal
  wal-dir = "/var/lib/influxdb/wal"

  # The amount of time that a write will wait before fsyncing.  A duration
  # greater than 0 can be used to batch up multiple fsync calls.  This is useful for slower
  # disks or when WAL write contention is seen.  A value of 0s fsyncs every write to the WAL.
  # Values in the range of 0-100ms are recommended for non-SSD disks.
  # wal-fsync-delay = "0s"


  # The type of shard index to use for new shards.  The default is an in-memory index that is
  # recreated at startup.  A value of "tsi1" will use a disk based index that supports higher
  # cardinality datasets.
  # index-version = "inmem"

  # Trace logging provides more verbose output around the tsm engine. Turning
  # this on can provide more useful output for debugging tsm engine issues.
  # 是否开启trace日志，默认值： false
  # trace-logging-enabled = false

  # Whether queries should be logged before execution. Very useful for troubleshooting, but will
  # log any sensitive data contained within a query.
  # query-log-enabled = true

  # Validates incoming writes to ensure keys only have valid unicode characters.
  # This setting will incur a small overhead because every key must be checked.
  # validate-keys = false

  # Settings for the TSM engine

  # CacheMaxMemorySize is the maximum size a shard's cache can
  # reach before it starts rejecting writes.
  # Valid size suffixes are k, m, or g (case insensitive, 1024 = 1k).
  # Values without a size suffix are in bytes.
  # 用于限定shard最大值，大于该值时会拒绝写入，默认值：
  # DefaultCacheMaxMemorySize = 1024 * 1024 * 1024 // 1GB
  # cache-max-memory-size = "1g"

  # CacheSnapshotMemorySize is the size at which the engine will
  # snapshot the cache and write it to a TSM file, freeing up memory
  # Valid size suffixes are k, m, or g (case insensitive, 1024 = 1k).
  # Values without a size suffix are in bytes.
  # 用于设置快照大小，大于该值时数据会刷新到tsm文件，默认值：
  # DefaultCacheSnapshotMemorySize = 25 * 1024 * 1024 // 25MB
  # cache-snapshot-memory-size = "25m"

  # CacheSnapshotWriteColdDuration is the length of time 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
  # tsm1引擎 snapshot写盘延迟，默认值：10m
  # cache-snapshot-write-cold-duration = "10m"

  # CompactFullWriteColdDuration is the duration at which the engine
  # will compact all TSM files in a shard if it hasn't received a
  # write or delete
  #tsm文件在压缩前可以存储的最大时间，默认值：4h
  # compact-full-write-cold-duration = "4h"

  # The maximum number of concurrent full and level compactions that can run at one time.  A
  # value of 0 results in 50% of runtime.GOMAXPROCS(0) used at runtime.  Any number greater
  # than 0 limits compactions to that value.  This setting does not apply
  # to cache snapshotting.
  # max-concurrent-compactions = 0

  # CompactThroughput is the rate limit in bytes per second that we
  # will allow TSM compactions to write to disk. Note that short bursts are allowed
  # to happen at a possibly larger value, set by CompactThroughputBurst
  # compact-throughput = "48m"

  # CompactThroughputBurst is the rate limit in bytes per second that we
  # will allow TSM compactions to write to disk.
  # compact-throughput-burst = "48m"

  # If true, then the mmap advise value MADV_WILLNEED will be provided to the kernel with respect to
  # TSM files. This setting has been found to be problematic on some kernels, and defaults to off.
  # It might help users who have slow disks in some cases.
  # tsm-use-madv-willneed = false

  # Settings for the inmem index

  # The maximum series allowed per database before writes are dropped.  This limit can prevent
  # high cardinality issues at the database level.  This limit can be disabled by setting it to
  # 0.
  # 限制数据库的级数，该值为0时取消限制，默认值：1000000
  # max-series-per-database = 1000000

  # The maximum number of tag values per tag that are allowed before writes are dropped.  This limit
  # can prevent high cardinality tag values from being written to a measurement.  This limit can be
  # disabled by setting it to 0.
  # 一个tag最大的value数，0取消限制，默认值：100000
  # max-values-per-tag = 100000

  # Settings for the tsi1 index

  # The threshold, in bytes, when an index write-ahead log 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.
  # max-index-log-file-size = "1m"

  # 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.
  series-id-set-cache-size = 100

###
### [coordinator]
###
### Controls the clustering service configuration.
###

[coordinator]
  # The default time a write request will wait until a "timeout" error is returned to the caller.
  # 写操作超时时间，默认值： 10s
  # write-timeout = "10s"

  # The maximum number of concurrent queries allowed to be executing at one time.  If a query is
  # executed and exceeds this limit, an error is returned to the caller.  This limit can be disabled
  # by setting it to 0.
  # 最大并发查询数，0无限制，默认值： 0
  # max-concurrent-queries = 0

  # The maximum time a query will is allowed to execute before being killed by the system.  This limit
  # can help prevent run away queries.  Setting the value to 0 disables the limit.
  # 查询操作超时时间，0无限制，默认值：0s
  # query-timeout = "0s"

  # The time threshold when a query will be logged as a slow query.  This limit can be set to help
  # discover slow or resource intensive queries.  Setting the value to 0 disables the slow query logging.
  # 慢查询超时时间，0无限制，默认值：0s
  # log-queries-after = "0s"

  # The maximum number of points a SELECT can process.  A value of 0 will make
  # the maximum point count unlimited.  This will only be checked every second so queries will not
  # be aborted immediately when hitting the limit.
  # SELECT语句可以处理的最大点数（points），0无限制，默认值：0
  # max-select-point = 0

  # The maximum number of series a SELECT can run.  A value of 0 will make the maximum series
  # count unlimited.
  # SELECT语句可以处理的最大级数（series），0无限制，默认值：0
  # max-select-series = 0

  # The maximum number of group by time bucket a SELECT can create.  A value of zero will max the maximum
  # number of buckets unlimited.
  # SELECT语句可以处理的最大"GROUP BY time()"的时间周期，0无限制，默认值：0
  # max-select-buckets = 0

###
### [retention]
###
### Controls the enforcement of retention policies for evicting old data.
###

[retention]
  # Determines whether retention policy enforcement enabled.
  # 是否启用该模块，默认值 ： true
  # enabled = true

  # The interval of time when retention policy enforcement checks run.
  # 检查时间间隔，默认值 ："30m"
  # check-interval = "30m"

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

[shard-precreation]
  # Determines whether shard pre-creation service is enabled.
  # enabled = true

  # The interval of time when the check to pre-create new shards runs.
  # check-interval = "10m"

  # The default period ahead of the endtime of a shard group that its successor
  # group is created.
  # advance-period = "30m"

###
### Controls the system self-monitoring, statistics and diagnostics.
###
### The internal database for monitoring data is created automatically if
### if it does not already exist. The target retention within this database
### is called 'monitor' and is also created with a retention period of 7 days
### and a replication factor of 1, if it does not exist. In all cases the
### this retention policy is configured as the default for the database.

[monitor]
  # Whether to record statistics internally.
  # 是否启用该模块，默认值 ：true
  # store-enabled = true

  # The destination database for recorded statistics
  # 默认数据库："_internal"
  # store-database = "_internal"

  # The interval at which to record statistics
  # 统计间隔，默认值："10s"
  # store-interval = "10s"

###
### [http]
###
### Controls how the HTTP endpoints are configured. These are the primary
### mechanism for getting data into and out of InfluxDB.
###

[http]
  # Determines whether HTTP endpoint is enabled.
  # 是否启用该模块，默认值 ：true
   enabled = true

  # Determines whether the Flux query endpoint is enabled.
  # flux-enabled = false

  # Determines whether the Flux query logging is enabled.
  # flux-log-enabled = false

  # The bind address used by the HTTP service.
  # 绑定地址，默认值：":8086"
   bind-address = ":8086"

  # Determines whether user authentication is enabled over HTTP/HTTPS.
  # 是否开启认证，默认值：false
  # auth-enabled = false

  # The default realm sent back when issuing a basic auth challenge.
  # realm = "InfluxDB"

  # Determines whether HTTP request logging is enabled.
  # 是否开启日志，默认值：true
  # log-enabled = true

  # Determines whether the HTTP write request logs should be suppressed when the log is enabled.
  # suppress-write-log = false

  # 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.
  # access-log-path = ""

  # Filters which requests should be logged. Each filter is of the pattern NNN, NNX, or NXX where N is
  # a number and X is a 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 is to have no filters which
  # will cause every request to be printed.
  # access-log-status-filters = []

  # Determines whether detailed write logging is enabled.
  # 是否开启写操作日志，如果置成true，每一次写操作都会打日志，默认值：false
  # write-tracing = false

  # Determines whether the pprof endpoint is enabled.  This endpoint is used for
  # troubleshooting and monitoring.
  # 是否开启pprof，默认值：true
  # pprof-enabled = true

  # Enables a pprof endpoint that binds to localhost:6060 immediately on startup.
  # This is only needed to debug startup issues.
  # debug-pprof-enabled = false

  # Determines whether HTTPS is enabled.
  # 是否开启https，默认值：false
  # https-enabled = false

  # The SSL certificate to use when HTTPS is enabled.
  # 设置https证书路径，默认值："/etc/ssl/influxdb.pem"
  # https-certificate = "/etc/ssl/influxdb.pem"

  # Use a separate private key location.
  # 设置https私钥，无默认值
  # https-private-key = ""

  # The JWT auth shared secret to validate requests using JSON web tokens.
  # 用于JWT签名的共享密钥，无默认值
  # shared-secret = ""

  # The default chunk size for result sets that should be chunked.
  # 配置查询返回最大行数，默认值：0
  # max-row-limit = 0

  # The maximum number of HTTP connections that may be open at once.  New connections that
  # would exceed this limit are dropped.  Setting this value to 0 disables the limit.
  # 配置最大连接数，0无限制，默认值：0
  # max-connection-limit = 0

  # Enable http service over unix domain socket
  # unix-socket-enabled = false

  # The path of the unix domain socket.
  # unix-socket路径，默认值："/var/run/influxdb.sock"
  # bind-socket = "/var/run/influxdb.sock"

  # The maximum size of a client request body, in bytes. Setting this value to 0 disables the limit.
  # max-body-size = 25000000

  # The maximum number of writes processed concurrently.
  # Setting this to 0 disables the limit.
  # max-concurrent-write-limit = 0

  # The maximum number of writes queued for processing.
  # Setting this to 0 disables the limit.
  # max-enqueued-write-limit = 0

  # The maximum duration for a write to wait in the queue to be processed.
  # Setting this to 0 or setting max-concurrent-write-limit to 0 disables the limit.
  # enqueued-write-timeout = 0

###
### [logging]
###
### Controls how the logger emits logs to the output.
###

[logging]
  # Determines which log encoder to use for logs. Available options
  # are auto, logfmt, and json. auto will use a more a more user-friendly
  # output format if the output terminal is a TTY, but the format is not as
  # easily machine-readable. When the output is a non-TTY, auto will use
  # logfmt.
  # format = "auto"

  # Determines which level of logs will be emitted. The available levels
  # are error, warn, info, and debug. Logs that are equal to or above the
  # specified level will be emitted.
  # level = "info"

  # Suppresses the logo output that is printed when the program is started.
  # The logo is always suppressed if STDOUT is not a TTY.
  # suppress-logo = false

###
### [subscriber]
###
### Controls the subscriptions, which can be used to fork a copy of all data
### received by the InfluxDB host.
###

[subscriber]
  # Determines whether the subscriber service is enabled.
  # 是否启用该模块，默认值 ：true
  # enabled = true

  # The default timeout for HTTP writes to subscribers.
  # http超时时间，默认值："30s"
  # http-timeout = "30s"

  # Allows insecure HTTPS connections to subscribers.  This is useful when testing with self-
  # signed certificates.
  # 是否允许不安全的证书，当测试自己签发的证书时比较有用。默认值： false
  # insecure-skip-verify = false

  # The path to the PEM encoded CA certs file. If the empty string, the default system certs will be used
  # 设置CA证书，无默认值
  # ca-certs = ""

  # The number of writer goroutines processing the write channel.
  # 设置并发数目，默认值：40
  # write-concurrency = 40

  # The number of in-flight writes buffered in the write channel.
  # 设置buffer大小，默认值：1000
  # write-buffer-size = 1000


###
### [[graphite]]
###
### Controls one or many listeners for Graphite data.
###

[[graphite]]
  # Determines whether the graphite endpoint is enabled.
  # 是否启用该模块，默认值 ：false
  # enabled = false
  # 数据库名称，默认值："graphite"
  # database = "graphite"
  # 存储策略，无默认值
  # retention-policy = ""
  # 绑定地址，默认值：":2003"
  # bind-address = ":2003"
  # 协议，默认值："tcp"
  # protocol = "tcp"
  # 一致性级别，默认值："one"
  # consistency-level = "one"

  # These next lines 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.

  # Flush if this many points get buffered
  # 批量size，默认值：5000
  # batch-size = 5000

  # number of batches that may be pending in memory
  # 配置在内存中等待的batch数，默认值：10
  # batch-pending = 10

  # Flush at least this often even if we haven't hit buffer limit
  # 超时时间，默认值："1s"
  # batch-timeout = "1s"

  # UDP Read buffer size, 0 means OS default. UDP listener will fail if set above OS max.
  # udp读取buffer的大小，0表示使用操作系统提供的值，如果超过操作系统的默认配置则会出错。 该配置的默认值：0
  # udp-read-buffer = 0

  ### This string joins multiple matching 'measurement' values providing more control over the final measurement name.
  #多个measurement间的连接符，默认值： "."
  # separator = "."

  ### Default tags that will be added to all metrics.  These can be overridden at the template level
  ### or by tags extracted from metric
  # tags = ["region=us-east", "zone=1c"]

  ### Each template line requires a template pattern.  It can have an optional
  ### filter before the template and separated by spaces.  It can also have optional extra
  ### tags following the template.  Multiple tags should be separated by commas and no spaces
  ### similar to the line protocol format.  There can be only one default template.
  # templates = [
  #   "*.app env.service.resource.measurement",
  #   # Default template
  #   "server.*",
  # ]

###
### [collectd]
###
### Controls one or many listeners for collectd data.
###

[[collectd]]
  # 是否启用该模块，默认值 ：false
  # enabled = false
  # 绑定地址，默认值： ":25826"
  # bind-address = ":25826"
  # 数据库名称，默认值："collectd"
  # database = "collectd"
  # 存储策略，无默认值
  # retention-policy = ""
  #
  # The collectd service supports either scanning a directory for multiple types
  # db files, or specifying a single db file.
  # 路径，默认值："/usr/share/collectd/types.db"
  # typesdb = "/usr/local/share/collectd"
  #
  # security-level = "none"
  # auth-file = "/etc/collectd/auth_file"

  # These next lines 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.

  # Flush if this many points get buffered
  # batch-size = 5000

  # Number of batches that may be pending in memory
  # batch-pending = 10

  # Flush at least this often even if we haven't hit buffer limit
  # batch-timeout = "10s"

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

  # Multi-value plugins can be handled two ways.
  # "split" will parse and store the multi-value plugin data into separate measurements
  # "join" will parse and store the multi-value plugin as a single multi-value measurement.
  # "split" is the default behavior for backward compatibility with previous versions of influxdb.
  # parse-multivalue-plugin = "split"
###
### [opentsdb]
###
### Controls one or many listeners for OpenTSDB data.
###

[[opentsdb]]
  # 是否启用该模块，默认值：false
  # enabled = false
  # 绑定地址，默认值：":4242"
  # bind-address = ":4242"
  # 默认数据库："opentsdb"
  # database = "opentsdb"
  # 存储策略，无默认值
  # retention-policy = ""
  # 一致性级别，默认值："one"
  # consistency-level = "one"
  # 是否开启tls，默认值：false
  # tls-enabled = false
  # 证书路径，默认值："/etc/ssl/influxdb.pem"
  # certificate= "/etc/ssl/influxdb.pem"

  # Log an error for every malformed point.
  # 出错时是否记录日志，默认值：true
  # log-point-errors = true

  # These next lines 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.

  # Flush if this many points get buffered
  # batch-size = 1000

  # Number of batches that may be pending in memory
  # batch-pending = 5

  # Flush at least this often even if we haven't hit buffer limit
  # batch-timeout = "1s"

###
### [[udp]]
###
### Controls the listeners for InfluxDB line protocol data via UDP.
###

[[udp]]
  # 是否启用该模块，默认值：false
  # enabled = false
  # 绑定地址，默认值：":8089"
  # bind-address = ":8089"
  # 数据库名称，默认值："udp"
  # database = "udp"
  # 存储策略，无默认值
  # retention-policy = ""

  # InfluxDB precision for timestamps on received points ("" or "n", "u", "ms", "s", "m", "h")
  # 时间精度，无默认值
  # precision = ""

  # These next lines 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.

  # Flush if this many points get buffered
  # batch-size = 5000

  # Number of batches that may be pending in memory
  # batch-pending = 10

  # Will flush at least this often even if we haven't hit buffer limit
  # batch-timeout = "1s"

  # UDP Read buffer size, 0 means OS default. UDP listener will fail if set above OS max.
  # udp读取buffer的大小，0表示使用操作系统提供的值，如果超过操作系统的默认配置则会出错。 该配置的默认值：0
  # read-buffer = 0

###
### [continuous_queries]
###
### Controls how continuous queries are run within InfluxDB.
###

[continuous_queries]
  # Determines whether the continuous query service is enabled.
  # enabled = true

  # Controls whether queries are logged when executed by the CQ service.
  # 是否开启日志，默认值：true
  # log-enabled = true

  # Controls whether queries are logged to the self-monitoring data store.
  # query-stats-enabled = false

  # interval for how often continuous queries will be checked if they need to run
  # 时间间隔，默认值："1s"
  # run-interval = "1s"

###
### [tls]
###
### Global configuration settings for TLS in InfluxDB.
###

[tls]
  # Determines the available set of cipher suites. See https://golang.org/pkg/crypto/tls/#pkg-constants
  # for a list of available ciphers, which depends on the version of Go (use the query
  # SHOW DIAGNOSTICS to see the version of Go used to build InfluxDB). If not specified, uses
  # the default settings from Go's crypto/tls package.
  # ciphers = [
  #   "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305",
  #   "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
  # ]

  # Minimum version of the tls protocol that will be negotiated. If not specified, uses the
  # default settings from Go's crypto/tls package.
  # min-version = "tls1.2"

  # Maximum version of the tls protocol that will be negotiated. If not specified, uses the
  # default settings from Go's crypto/tls package.
  # max-version = "tls1.2"

 3 登陆说明

使用命令influx

Usage of influx:
  -version
       Display the version and exit.
  -host 'host name'
       Host to connect to.
  -port 'port #'
       Port to connect to.
  -socket 'unix domain socket'
       Unix socket to connect to.
  -database 'database name'
       Database to connect to the server.
  -password 'password'
      Password to connect to the server.  Leaving blank will prompt for password (--password '').
  -username 'username'
       Username to connect to the server.
  -ssl
        Use https for requests.
  -unsafeSsl
        Set this when connecting to the cluster using https and not use SSL verification.
  -execute 'command'
       Execute command and quit.
  -type 'influxql|flux'
       Type specifies the query language for executing commands or when invoking the REPL.
  -format 'json|csv|column'
       Format specifies the format of the server responses:  json, csv, or column.
  -precision 'rfc3339|h|m|s|ms|u|ns'
       Precision specifies the format of the timestamp:  rfc3339, h, m, s, ms, u or ns.
  -consistency 'any|one|quorum|all'
       Set write consistency level: any, one, quorum, or all
  -pretty
       Turns on pretty print for the json format.
  -import
       Import a previous database export from file
  -pps
       How many points per second the import will allow.  By default it is zero and will not throttle importing.
  -path
       Path to file to import
  -compressed
       Set to true if the import file is compressed

 范例：

# 连接本机的IfluxDB
influx

# 连接指定主机的InfluxDB
influx -host localhost

# 连接指定主机指定端口的InfluxDB
influx -host localhost -port 8086

# 连接指定主机指定端口的InfluxDB的指定数据库
influx -host localhost -port 8086 -database testdb

# 使用指定用户连接指定主机指定端口的InfluxDB的指定数据库
influx -host localhost -port 8086 -database testdb -username root

# 使用指定用户密码连接指定主机指定端口的InfluxDB的指定数据库
influx -host localhost -port 8086 -database testdb -username root -password root

# 远程执行命令
influx -execute 'show databases;'

# 使用指定用户密码连接指定主机指定端口的InfluxDB的指定数据库执行命令，返回结果为json格式
influx -host localhost -port 8086 -database testdb -username root -password root -execute 'select * from win' -format 'json'

# 使用指定用户密码连接指定主机指定端口的InfluxDB的指定数据库执行命令，返回结果为json格式，并进行格式优化
influx -host localhost -port 8086 -database testdb -username root -password root -execute 'select * from win' -format 'json' -pretty