Install Vault on macOS, Linux, or WSL2. Windows is not officially supported for plugin development.
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In this long-form article, we will dissect every aspect of vault plugin new —from basic syntax and use cases to a complete step-by-step tutorial on building, registering, and running your first custom plugin.
| Requirement | Description | |-------------|-------------| | | Version 1.11.0 or higher. Check with vault -v . | | Go (1.21+) | Vault plugins are written in Go. | | Make / GCC | For compiling the plugin binary. | | Git | For fetching dependencies. | | Vault Dev Server | For testing (recommended). | vault plugin new
While Vault supports mainstream databases, "new" plugins allow integration with proprietary in-house databases or niche SaaS products that lack official support.
You can create new Secrets Engines, Auth Methods, or Database Plugins . Development Workflow:
package main import ( "context" "fmt" "strings" "://github.com" "://github.com" ) // Factory returns a new instance of your backend func Factory(ctx context.Context, conf *logical.BackendConfig) (logical.Backend, error) { b := &Backend{} b.Backend = &framework.Backend{ Help: "A brand new custom Vault plugin example.", BackendType: logical.TypeLogical, PathsSpecial: &logical.Paths{ SealUnwrapStorageAddresses: []string{}, }, Paths: []*framework.Path Pattern: "hello/?", Fields: map[string]*framework.FieldSchema "name": Type: framework.TypeString, Default: "World", Description: "The name to greet.", , , Operations: map[logical.Operation]framework.OperationHandler logical.ReadOperation: &framework.PathOperation Callback: b.pathHelloRead, , , , , } if err := b.Setup(ctx, conf); err != nil return nil, err return b, nil } type Backend struct *framework.Backend func (b *Backend) pathHelloRead(ctx context.Context, req *logical.Request, data *framework.FieldData) (*logical.Response, error) { name := data.Get("name").(string) return &logical.Response{ Data: map[string]interface{} "greeting": fmt.Sprintf("Hello, %s! Welcome to your new Vault plugin.", strings.Title(name)), , }, nil } Use code with caution. The Main Entry Point ( main.go ) Install Vault on macOS, Linux, or WSL2
vault write sys/plugins/catalog/ \ sha_256=" " \ command=" " Use code with caution. Step 3: Enable and Configure
Move the plugin binary to the plugin_directory specified in your Vault configuration file ( vault.hcl ).
return nil, nil
: Improved retry handling during the creation of service principals.
Proper versioning is now a core part of the plugin ecosystem. Vault uniquely identifies plugins based on their type, name, and version. This allows you to run different versions of the same plugin on different mount paths, enabling safer, rolling upgrades.
: The plugin handles meta-tags and descriptions based on your file's frontmatter. | | Make / GCC | For compiling the plugin binary
Always download the plugin binary from trusted sources (HashiCorp, GitHub) and verify its checksum. Step 2: Register the Plugin You must register the plugin in your Vault configuration: plugin_directory = "/path/to/plugins" Use code with caution.