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4.1
4.1
  • Developer Documentation
  • Install HarperDB
    • On Linux
  • Getting Started
  • Full API Documentation
  • HarperDB Studio
    • Create an Account
    • Log In & Password Reset
    • Resources (Marketplace, Drivers, Tutorials, & Example Code)
    • Organizations
    • Instances
    • Query Instance Data
    • Manage Schemas / Browse Data
    • Manage Charts
    • Manage Clustering
    • Manage Instance Users
    • Manage Instance Roles
    • Manage Functions
    • Instance Metrics
    • Instance Configuration
    • Instance Example Code
    • Enable Mixed Content
  • HarperDB Cloud
    • IOPS Impact on Performance
    • Instance Size Hardware Specs
    • Alarms
    • Verizon 5G Wavelength
  • Security
    • JWT Authentication
    • Basic Authentication
    • Configuration
    • Users & Roles
  • Clustering
    • Requirements and Definitions
    • Creating A Cluster User
    • Naming A Node
    • Enabling Clustering
    • Establishing Routes
    • Subscription Overview
    • Managing Subscriptions
    • Things Worth Knowing
  • Custom Functions
    • Requirements and Definitions
    • Create a Project
    • Define Routes
    • Define Helpers
    • Host A Static Web UI
    • Using NPM and GIT
    • Custom Functions Operations
    • Restarting the Server
    • Debugging a Custom Function
    • Custom Functions Templates
    • Example Projects
  • Add-ons and SDKs
    • Google Data Studio
  • SQL Guide
    • SQL Features Matrix
    • Insert
    • Update
    • Delete
    • Select
    • Joins
    • SQL Date Functions
    • SQL Reserved Word
    • SQL Functions
    • SQL JSON Search
    • SQL Geospatial Functions
      • geoArea
      • geoLength
      • geoDifference
      • geoDistance
      • geoNear
      • geoContains
      • geoEqual
      • geoCrosses
      • geoConvert
  • HarperDB CLI
  • Configuration File
  • Logging
  • Transaction Logging
  • Audit Logging
  • Jobs
  • Upgrade a HarperDB Instance
  • Reference
    • Storage Algorithm
    • Dynamic Schema
    • Data Types
    • Content Types/Data Formats
    • HarperDB Headers
    • HarperDB Limits
  • Support
  • Release Notes
    • HarperDB Tucker (Version 4)
      • 4.1.0
      • 4.0.6
      • 4.0.5
      • 4.0.4
      • 4.0.3
      • 4.0.2
      • 4.0.1
      • 4.0.0
    • HarperDB Monkey (Version 3)
      • 3.3.0
      • 3.2.1
      • 3.2.0
      • 3.1.5
      • 3.1.4
      • 3.1.3
      • 3.1.2
      • 3.1.1
      • 3.1.0
      • 3.0.0
    • HarperDB Penny (Version 2)
      • 2.3.1
      • 2.3.0
      • 2.2.3
      • 2.2.2
      • 2.2.0
      • 2.1.1
    • HarperDB Alby (Version 1)
      • 1.3.1
      • 1.3.0
      • 1.2.0
      • 1.1.0
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On this page
  • Installing HarperDB
  • Starting HarperDB
  • Stopping HarperDB
  • Restarting HarperDB
  • Managing HarperDB Service(s)
  • Getting the HarperDB Version
  • Get all available CLI commands
  • Get the status of HarperDB and clustering
  • Backups
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HarperDB CLI

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Last updated 1 year ago

The HarperDB command line interface (CLI) is used to administer .

Installing HarperDB

To install HarperDB with CLI prompts, run the following command:

harperdb install

Alternatively, HarperDB installations can be automated with environment variables or command line arguments; . Note, when used in conjunction, command line arguments will override environment variables.

Environment Variables

#minimum required parameters for no additional CLI prompts
export TC_AGREEMENT=yes
export HDB_ADMIN_USERNAME=HDB_ADMIN
export HDB_ADMIN_PASSWORD=password
export ROOTPATH=/tmp/hdb/
export OPERATIONSAPI_NETWORK_PORT=9925
harperdb install

Command Line Arguments

#minimum required parameters for no additional CLI prompts
harperdb install --TC_AGREEMENT yes --HDB_ADMIN_USERNAME HDB_ADMIN --HDB_ADMIN_PASSWORD password --ROOTPATH /tmp/hdb/ --OPERATIONSAPI_NETWORK_PORT 9925

Starting HarperDB

To start HarperDB after it is installed, run the following command:

harperdb start

Stopping HarperDB

To stop HarperDB once it is running, run the following command:

harperdb stop

Restarting HarperDB

To restart HarperDB once it is running, run the following command:

harperdb restart

Managing HarperDB Service(s)

The following commands are used to start, restart, or stop one or more HarperDB service without restarting the full application:

harperdb start --service harperdb,"custom functions",ipc
harperdb stop --service harperdb
harperdb restart --service "custom functions"

The following services are managed via the above commands:

  • HarperDB

  • Custom Functions

  • IPC

  • Clustering

Getting the HarperDB Version

To check the version of HarperDB that is installed run the following command:

harperdb version

Get all available CLI commands

To display all available HarperDB CLI commands along with a brief description run:

harperdb help

Get the status of HarperDB and clustering

To display the status of the HarperDB process, the clustering hub and leaf processes, the clustering network and replication statuses, run:

harperdb status

Backups

HarperDB uses a transactional commit process that ensures that data on disk is always transactionally consistent with storage. This means that HarperDB maintains safety of database integrity in the event of a crash. It also means that you can use any standard volume snapshot tool to make a backup of a HarperDB database. Database files are stored in the hdb/schemas directory (organized schema directories). As long as the snapshot is an atomic snapshot of these database files, the data can be copied/movied back into the schemas directory to restore a previous backup (with HarperDB shut down) , and database integrity will be preserved. Note that simply copying an in-use database file (using cp, for example) is not a snapshot, and this would progressively read data from the database at different points in time, which yields unreliable copy that likely will not be usable. Standard copying is only reliable for a database file that is not in use.

self-installed HarperDB instances
see a full list of configuration parameters here