vaultlib

Lightweight, simple Go library for Vault secret reading (http API).

Connect to Vault through app role or token.

Reads kv secret values

Features

• Connect to Vault through app role
• Read Vault secret, kv type (v1 or v2 "versioned")
• Automatically renew token
• Execute any HTTP request on Vault (RawRequest)

Config

Configuration can be done through env variables or programmatically through the Config object The following env variables are supported:

VAULT_ADDR            # Vault server URL (default "http://localhost:8200")
VAULT_CACERT          # Path to CA file
VAULT_TOKEN           # Vault Token
VAULT_ROLEID          # Vault app role id
VAULT_SECRETID        # Vault app role secret id
VAULT_MOUNTPOINT      # Vault app role mountpoint (default "approle")
VAULT_CLIENT_TIMEOUT  # Client timeout
VAULT_SKIP_VERIFY     # Do not check SSL

If not set, vaultlib will fallback to safe default values.

vautlib will automatically use the http_proxy environment variable to connect to Vault

Getting Started

For a simple, working example, check the sample folder.

package main

import (
    "fmt"
    "log"
    "os"

    vault "github.com/mch1307/vaultlib"
)

func main() {
    // Config can be set through ENV before invoking NewConfig
    os.Setenv("VAULT_ADDR", "http://localhost:8200")

    // Create a new config. Reads env variables, fallback to default value if needed
    vcConf := vault.NewConfig()

    // Config can also be done programmtically
    vcConf.Address = "http://localhost:8200"

    // set app role credentials (ie after reading from docker secret)
    // vcConf.AppRoleCredentials.RoleID = "myRoleID"
    // vcConf.AppRoleCredentials.SecretID = "mySecretID"
    // if you have set a different mountpoint from "approle" :
    // vcConf.AppRoleCredentials.MountPoint = "myCustomMountPoint"

    // Create new client
    vaultCli, err := vault.NewClient(vcConf)
    if err != nil {
        log.Fatal(err)
    }

    // Get the Vault secret data
    kv, err := vaultCli.GetSecret("my_kv/my_org/my_secret")
    if err != nil {
        fmt.Println(err)
    }
    for k, v := range kv.KV {
        fmt.Printf("secret %v: %v\n", k, v)
    }
}