183 lines
4.9 KiB
Plaintext
183 lines
4.9 KiB
Plaintext
---
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layout: commands
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page_title: 'Commands: KV Get'
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---
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# Consul KV Get
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Command: `consul kv get`
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Corresponding HTTP API Endpoint: [\[GET\] /v1/kv/:key](/api-docs/kv#read-key)
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The `kv get` command is used to retrieve the value from Consul's KV
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store at the given key name. If no key exists with that name, an error is
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returned. If a key exists with that name but has no data, nothing is returned.
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A key name or prefix is required.
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-> **Note**: When reading many entries under a given prefix, it may be worth
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considering [`kv export`](/commands/kv/export) instead. The kv export output
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can be used with [`kv import`](/commands/kv/import) to move entire trees between
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Consul clusters. Alternatively, the [transaction API](/api-docs/txn) provides
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support for performing up to 64 KV operations atomically.
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The table below shows this command's [required ACLs](/api#authentication). Configuration of
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[blocking queries](/api-docs/features/blocking) and [agent caching](/api-docs/features/caching)
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are not supported from commands, but may be from the corresponding HTTP endpoint.
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| ACL Required |
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| ------------ |
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| `key:read` |
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## Usage
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Usage: `consul kv get [options] [KEY_OR_PREFIX]`
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#### Command Options
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- `-base64` - Base 64 encode the value. The default value is false.
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- `-detailed` - Provide additional metadata about the key in addition to the
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value such as the ModifyIndex and any flags that may have been set on the key.
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The default value is false.
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- `-keys` - List keys which start with the given prefix, but not their values.
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This is especially useful if you only need the key names themselves. This
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option is commonly combined with the -separator option. The default value is
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false.
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- `-recurse` - Recursively look at all keys prefixed with the given path. The
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default value is false.
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- `-separator=<string>` - String to use as a separator for recursive lookups. The
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default value is "/", and only used when paired with the `-keys` flag. This will
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limit the prefix of keys returned, only up to the given separator.
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#### Enterprise Options
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@include 'http_api_partition_options.mdx'
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@include 'http_api_namespace_options.mdx'
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#### API Options
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@include 'http_api_options_client.mdx'
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@include 'http_api_options_server.mdx'
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## Examples
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To retrieve the value for the key named "redis/config/connections" in the
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KV store:
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```shell-session hideClipboard
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$ consul kv get redis/config/connections
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5
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```
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This will return the original raw value stored in Consul.
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If the key with the given name does not exist, an error is returned.
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```shell-session hideClipboard
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$ consul kv get not-a-real-key
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Error! No key exists at: not-a-real-key
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```
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### Detailed Output
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To view detailed information about the key, specify the `-detailed` flag.
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This will output all known metadata about the key including `ModifyIndex`
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and any user-supplied flags:
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```shell-session hideClipboard
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$ consul kv get -detailed redis/config/connections
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CreateIndex 336
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Flags 0
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Key redis/config/connections
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LockIndex 0
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ModifyIndex 336
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Session -
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Value 5
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```
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### Recursively Reading By Prefix
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To treat the path as a prefix and list all entries which start with the given
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prefix, specify the `-recurse` flag:
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```shell-session hideClipboard
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$ consul kv get -recurse redis/
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redis/config/connections:5
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redis/config/cpu:128
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redis/config/memory:512
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```
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Alternatively, combine with the `-detailed` flag to list detailed information
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about all entries under a prefix:
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```shell-session hideClipboard
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$ consul kv get -recurse -detailed redis
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CreateIndex 336
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Flags 0
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Key redis/config/connections
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LockIndex 0
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ModifyIndex 336
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Session -
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Value 5
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CreateIndex 472
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Flags 0
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Key redis/config/cpu
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LockIndex 0
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ModifyIndex 472
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Session -
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Value 128
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CreateIndex 471
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Flags 0
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Key redis/config/memory
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LockIndex 0
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ModifyIndex 471
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Session -
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Value 512
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```
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### Listing Keys
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To just list the keys which start with the specified prefix, use the `-keys`
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option instead. This is more performant and results in a smaller payload:
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```shell-session hideClipboard
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$ consul kv get -keys redis/config/
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redis/config/connections
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redis/config/cpu
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redis/config/memory
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```
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By default, the `-keys` operation uses a separator of "/", meaning it will not
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recurse beyond that separator. You can choose a different separator by setting
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`-separator="<string>"`.
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```shell-session hideClipboard
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$ consul kv get -keys -separator="c" redis
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redis/c
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```
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Alternatively, you can disable the separator altogether by setting it to the
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empty string:
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```shell-session hideClipboard
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$ consul kv get -keys -separator="" redis
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redis/config/connections
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redis/config/cpu
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redis/config/memory
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```
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To list all keys at the root, simply omit the prefix parameter:
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```shell-session hideClipboard
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$ consul kv get -keys
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memcached/
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redis/
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```
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