bc29610124
* Updates Raft library to get new snapshot/restore API. * Basic backup and restore working, but need some cleanup. * Breaks out a snapshot module and adds a SHA256 integrity check. * Adds snapshot ACL and fills in some missing comments. * Require a consistent read for snapshots. * Make sure snapshot works if ACLs aren't enabled. * Adds a bit of package documentation. * Returns an empty response from restore to avoid EOF errors. * Adds API client support for snapshots. * Makes internal file names match on-disk file snapshots. * Adds DC and token coverage for snapshot API test. * Adds missing documentation. * Adds a unit test for the snapshot client endpoint. * Moves the connection pool out of the client for easier testing. * Fixes an incidental issue in the prepared query unit test. I realized I had two servers in bootstrap mode so this wasn't a good setup. * Adds a half close to the TCP stream and fixes panic on error. * Adds client and endpoint tests for snapshots. * Moves the pool back into the snapshot RPC client. * Adds a TLS test and fixes half-closes for TLS connections. * Tweaks some comments. * Adds a low-level snapshot test. This is independent of Consul so we can pull this out into a library later if we want to. * Cleans up snapshot and archive and completes archive tests. * Sends a clear error for snapshot operations in dev mode. Snapshots require the Raft snapshots to be readable, which isn't supported in dev mode. Send a clear error instead of a deep-down Raft one. * Adds docs for the snapshot endpoint. * Adds a stale mode and index feedback for snapshot saves. This gives folks a way to extract data even if the cluster has no leader. * Changes the internal format of a snapshot from zip to tgz. * Pulls in Raft fix to cancel inflight before a restore. * Pulls in new Raft restore interface. * Adds metadata to snapshot saves and a verify function. * Adds basic save and restore snapshot CLI commands. * Gets rid of tarball extensions and adds restore message. * Fixes an incidental bad link in the KV docs. * Adds documentation for the snapshot CLI commands. * Scuttle any request body when a snapshot is saved. * Fixes archive unit test error message check. * Allows for nil output writers in snapshot RPC handlers. * Renames hash list Decode to DecodeAndVerify. * Closes the client connection for snapshot ops. * Lowers timeout for restore ops. * Updates Raft vendor to get new Restore signature and integrates with Consul. * Bounces the leader's internal state when we do a restore.
84 lines
1.9 KiB
Markdown
84 lines
1.9 KiB
Markdown
---
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layout: "docs"
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page_title: "Commands: KV"
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sidebar_current: "docs-commands-kv"
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---
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# Consul KV
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Command: `consul kv`
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The `kv` command is used to interact with Consul's key-value store via the
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command line. It exposes top-level commands for inserting, updating, reading,
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and deleting from the store. This command is available in Consul 0.7.1 and
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later.
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The key-value store is also accessible via the
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[HTTP API](/docs/agent/http/kv.html).
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## Usage
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Usage: `consul kv <subcommand>`
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For the exact documentation for your Consul version, run `consul kv -h` to view
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the complete list of subcommands.
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```text
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Usage: consul kv <subcommand> [options] [args]
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# ...
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Subcommands:
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delete Removes data from the KV store
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get Retrieves or lists data from the KV store
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put Sets or updates data in the KV store
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```
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For more information, examples, and usage about a subcommand, click on the name
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of the subcommand in the sidebar or one of the links below:
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- [delete](/docs/commands/kv/delete.html)
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- [get](/docs/commands/kv/get.html)
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- [put](/docs/commands/kv/put.html)
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## Basic Examples
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To create or update the key named "redis/config/connections" to the value "5" in
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Consul's key-value store:
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```text
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$ consul kv put redis/config/connections 5
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Success! Data written to: redis/config/connections
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```
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To read a value back from Consul:
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```text
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$ consul kv get redis/config/connections
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5
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```
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Or you can query for detailed information:
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```text
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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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Finally, deleting a key is just as easy:
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```text
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$ consul kv delete redis/config/connections
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Success! Data deleted at key: redis/config/connections
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```
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For more examples, ask for subcommand help or view the subcommand documentation
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by clicking on one of the links in the sidebar.
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