mirror of https://github.com/hashicorp/consul
89 lines
2.7 KiB
Markdown
89 lines
2.7 KiB
Markdown
---
|
|
layout: docs
|
|
page_title: Store and access key/value data
|
|
description: >-
|
|
Consul includes a key/value store for that you can use to dynamically configure apps. Learn how to add and manage data in the Consul KV store using the Consul
|
|
command-line interface.
|
|
---
|
|
|
|
# Store and access key/value data
|
|
|
|
This page describes the processes for interacting with Consul's KV store. You can interact with the KV store using the [`consul kv` CLI command](/consul/commands/kv) or the [`/kv` endpoint](/consul/api-docs/kv).
|
|
|
|
## Add data to KV store
|
|
|
|
To insert values into the KV store or update an existing value, use the `consul kv put` command. The first entry after the command is the key and the second entry is the value.
|
|
|
|
```shell-session
|
|
$ consul kv put redis/config/minconns 1
|
|
Success! Data written to: redis/config/minconns
|
|
```
|
|
|
|
In the following example, the key is `redis/config/maxconns` and the value is set to `25`.
|
|
|
|
```shell-session
|
|
$ consul kv put redis/config/maxconns 25
|
|
Success! Data written to: redis/config/maxconns
|
|
```
|
|
|
|
In the following example, the command includes a `flags` value of 42. Keys support setting a 64-bit integer flag value that is not used internally by Consul but can be used by clients to add metadata to a KV pair.
|
|
|
|
```shell-session
|
|
$ consul kv put -flags=42 redis/config/users/admin zaphod
|
|
Success! Data written to: redis/config/users/admin
|
|
```
|
|
|
|
## Query data from KV store
|
|
|
|
To query for the value of one of the keys in the KV store, use the `consul kv get` command.
|
|
|
|
```shell-session
|
|
$ consul kv get redis/config/minconns
|
|
1
|
|
```
|
|
|
|
To retrieve metadata you included as `flags`, using the `-detailed` command line flag.
|
|
|
|
```shell-session
|
|
$ consul kv get -detailed redis/config/users/admin
|
|
```
|
|
|
|
```plaintext hideClipboard
|
|
CreateIndex 14
|
|
Flags 42
|
|
Key redis/config/users/admin
|
|
LockIndex 0
|
|
ModifyIndex 14
|
|
Session -
|
|
Value zaphod
|
|
```
|
|
|
|
To list all the keys in the store, use the `recurse` option. Results return in lexicographical order.
|
|
|
|
```shell-session
|
|
$ consul kv get -recurse
|
|
```
|
|
|
|
```plaintext hideClipboard
|
|
redis/config/maxconns:25
|
|
redis/config/minconns:1
|
|
redis/config/users/admin:zaphod
|
|
```
|
|
|
|
## Delete data
|
|
|
|
To delete the value of one of the keys in the KV store, use the `consul kv delete` command.
|
|
|
|
```shell-session
|
|
$ consul kv delete redis/config/minconns
|
|
Success! Deleted key: redis/config/minconns
|
|
```
|
|
|
|
Although the keys in the KV store are stored in a flat structure, you can manipulate keys that share a prefix as a group, as if they were in folders or subfolders, by using the `-recurse` flag.
|
|
|
|
The following example deletes all the keys with the `redis` prefix using the `-recurse` option.
|
|
|
|
```shell-session
|
|
$ consul kv delete -recurse redis
|
|
Success! Deleted keys with prefix: redis
|
|
``` |