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util: allow configuring VAULT_BACKEND for Vault connection
It seems that the version of the key/value engine can not always be detected for Hashicorp Vault. In certain cases, it is required to configure the `VAULT_BACKEND` (or `vaultBackend`) option so that a successful connection to the service can be made. The `kv-v2` is the current default for development deployments of Hashicorp Vault (what we use for automated testing). Production deployments default to version 1 for now. Signed-off-by: Niels de Vos <ndevos@redhat.com>
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@ -9,6 +9,7 @@ data:
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"vaultAddress": "http://vault.default.svc.cluster.local:8200",
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"vaultAuthPath": "/v1/auth/kubernetes/login",
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"vaultRole": "csi-kubernetes",
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"vaultBackend": "kv-v2",
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"vaultPassphraseRoot": "/v1/secret",
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"vaultPassphrasePath": "ceph-csi/",
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"vaultCAVerify": "false"
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@ -16,6 +17,7 @@ data:
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"vault-tokens-test": {
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"encryptionKMSType": "vaulttokens",
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"vaultAddress": "http://vault.default.svc.cluster.local:8200",
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"vaultBackend": "kv-v2",
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"vaultBackendPath": "secret/",
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"vaultTLSServerName": "vault.default.svc.cluster.local",
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"vaultCAVerify": "false",
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@ -34,6 +36,7 @@ data:
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"vault-tenant-sa-test": {
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"encryptionKMSType": "vaulttenantsa",
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"vaultAddress": "http://vault.default.svc.cluster.local:8200",
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"vaultBackend": "kv-v2",
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"vaultBackendPath": "shared-secrets",
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"vaultTLSServerName": "vault.default.svc.cluster.local",
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"vaultCAVerify": "false",
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@ -7,6 +7,7 @@ metadata:
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name: ceph-csi-kms-config
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data:
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vaultAddress: "http://vault.default.svc.cluster.local:8200"
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vaultBackend: "kv-v1"
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vaultBackendPath: "secret/"
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vaultTLSServerName: "vault.default.svc.cluster.local"
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vaultCAVerify: "false"
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@ -21,7 +21,7 @@ data:
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vault login ${VAULT_DEV_ROOT_TOKEN_ID}
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# create a secret store for the tenant
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vault secrets enable -path="tenant" kv
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vault secrets enable -version=2 -path="tenant" kv
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# create a policy for the tenant
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vault policy write "${TENANT_NAMESPACE}" - << EOS
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@ -19,5 +19,6 @@ kind: ConfigMap
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metadata:
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name: ceph-csi-kms-config
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data:
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vaultBackend: kv-v2
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vaultBackendPath: tenant
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vaultRole: ceph-csi-tenant
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@ -132,6 +132,16 @@ func (vc *vaultConnection) initConnection(config map[string]interface{}) error {
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}
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// default: !firstInit
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vaultBackend := "" // optional
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err = setConfigString(&vaultBackend, config, "vaultBackend")
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if errors.Is(err, errConfigOptionInvalid) {
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return err
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}
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// set the option if the value was not invalid
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if !errors.Is(err, errConfigOptionMissing) {
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vaultConfig[vault.VaultBackendKey] = vaultBackend
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}
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vaultBackendPath := "" // optional
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err = setConfigString(&vaultBackendPath, config, "vaultBackendPath")
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if errors.Is(err, errConfigOptionInvalid) {
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@ -57,6 +57,7 @@ const (
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type standardVault struct {
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KmsPROVIDER string `json:"KMS_PROVIDER"`
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VaultADDR string `json:"VAULT_ADDR"`
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VaultBackend string `json:"VAULT_BACKEND"`
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VaultBackendPath string `json:"VAULT_BACKEND_PATH"`
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VaultCACert string `json:"VAULT_CACERT"`
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VaultTLSServerName string `json:"VAULT_TLS_SERVER_NAME"`
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@ -69,6 +70,7 @@ type standardVault struct {
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type vaultTokenConf struct {
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EncryptionKMSType string `json:"encryptionKMSType"`
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VaultAddress string `json:"vaultAddress"`
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VaultBackend string `json:"vaultBackend"`
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VaultBackendPath string `json:"vaultBackendPath"`
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VaultCAFromSecret string `json:"vaultCAFromSecret"`
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VaultTLSServerName string `json:"vaultTLSServerName"`
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@ -81,6 +83,7 @@ type vaultTokenConf struct {
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func (v *vaultTokenConf) convertStdVaultToCSIConfig(s *standardVault) {
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v.EncryptionKMSType = s.KmsPROVIDER
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v.VaultAddress = s.VaultADDR
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v.VaultBackend = s.VaultBackend
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v.VaultBackendPath = s.VaultBackendPath
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v.VaultCAFromSecret = s.VaultCACert
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v.VaultClientCertFromSecret = s.VaultClientCert
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@ -147,6 +150,7 @@ Example JSON structure in the KMS config is,
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"vault-with-tokens": {
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"encryptionKMSType": "vaulttokens",
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"vaultAddress": "http://vault.default.svc.cluster.local:8200",
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"vaultBackend": "kv-v2",
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"vaultBackendPath": "secret/",
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"vaultTLSServerName": "vault.default.svc.cluster.local",
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"vaultCAFromSecret": "vault-ca",
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@ -515,6 +519,7 @@ func (vtc *vaultTenantConnection) getCertificate(tenant, secretName, key string)
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func isTenantConfigOption(opt string) bool {
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switch opt {
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case "vaultAddress":
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case "vaultBackend":
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case "vaultBackendPath":
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case "vaultTLSServerName":
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case "vaultCAFromSecret":
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@ -125,6 +125,7 @@ func TestStdVaultToCSIConfig(t *testing.T) {
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vaultConfigMap := `{
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"KMS_PROVIDER":"vaulttokens",
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"VAULT_ADDR":"https://vault.example.com",
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"VAULT_BACKEND":"kv-v2",
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"VAULT_BACKEND_PATH":"/secret",
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"VAULT_CACERT":"",
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"VAULT_TLS_SERVER_NAME":"vault.example.com",
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@ -150,6 +151,8 @@ func TestStdVaultToCSIConfig(t *testing.T) {
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t.Errorf("unexpected value for EncryptionKMSType: %s", v.EncryptionKMSType)
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case v.VaultAddress != "https://vault.example.com":
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t.Errorf("unexpected value for VaultAddress: %s", v.VaultAddress)
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case v.VaultBackend != "kv-v2":
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t.Errorf("unexpected value for VaultBackend: %s", v.VaultBackend)
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case v.VaultBackendPath != "/secret":
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t.Errorf("unexpected value for VaultBackendPath: %s", v.VaultBackendPath)
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case v.VaultCAFromSecret != "":
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@ -172,6 +175,7 @@ func TestTransformConfig(t *testing.T) {
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cm := make(map[string]interface{})
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cm["KMS_PROVIDER"] = "vaulttokens"
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cm["VAULT_ADDR"] = "https://vault.example.com"
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cm["VAULT_BACKEND"] = "kv-v2"
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cm["VAULT_BACKEND_PATH"] = "/secret"
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cm["VAULT_CACERT"] = ""
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cm["VAULT_TLS_SERVER_NAME"] = "vault.example.com"
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@ -184,6 +188,7 @@ func TestTransformConfig(t *testing.T) {
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require.NoError(t, err)
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assert.Equal(t, config["encryptionKMSType"], cm["KMS_PROVIDER"])
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assert.Equal(t, config["vaultAddress"], cm["VAULT_ADDR"])
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assert.Equal(t, config["vaultBackend"], cm["VAULT_BACKEND"])
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assert.Equal(t, config["vaultBackendPath"], cm["VAULT_BACKEND_PATH"])
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assert.Equal(t, config["vaultCAFromSecret"], cm["VAULT_CACERT"])
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assert.Equal(t, config["vaultTLSServerName"], cm["VAULT_TLS_SERVER_NAME"])
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