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Bring in safe mode support (#8478)

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This PR refactors object layer handling such
that upon failure in sub-system initialization
server reaches a stage of safe-mode operation
wherein only certain API operations are enabled
and available.

This allows for fixing many scenarios such as

 - incorrect configuration in vault, etcd,
   notification targets
 - missing files, incomplete config migrations
   unable to read encrypted content etc
 - any other issues related to notification,
   policies, lifecycle etc
This commit is contained in:
Harshavardhana
2019-11-09 09:27:23 -08:00
committed by kannappanr
parent 1c90a6bd49
commit 822eb5ddc7
41 changed files with 1129 additions and 830 deletions
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530
cmd/admin-handlers.go
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@@ -22,7 +22,6 @@ import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"os"
@@ -42,7 +41,6 @@ import (
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/cpu"
"github.com/minio/minio/pkg/handlers"
iampolicy "github.com/minio/minio/pkg/iam/policy"
"github.com/minio/minio/pkg/madmin"
"github.com/minio/minio/pkg/mem"
xnet "github.com/minio/minio/pkg/net"
@@ -94,7 +92,7 @@ func updateServer(updateURL, sha256Hex string, latestReleaseTime time.Time) (us
return us, nil
}
// ServerUpdateHandler - POST /minio/admin/v1/update?updateURL={updateURL}
// ServerUpdateHandler - POST /minio/admin/v2/update?updateURL={updateURL}
// ----------
// updates all minio servers and restarts them gracefully.
func (a adminAPIHandlers) ServerUpdateHandler(w http.ResponseWriter, r *http.Request) {
@@ -173,7 +171,7 @@ func (a adminAPIHandlers) ServerUpdateHandler(w http.ResponseWriter, r *http.Req
}
}
// ServiceActionHandler - POST /minio/admin/v1/service?action={action}
// ServiceActionHandler - POST /minio/admin/v2/service?action={action}
// ----------
// restarts/stops minio server gracefully. In a distributed setup,
func (a adminAPIHandlers) ServiceActionHandler(w http.ResponseWriter, r *http.Request) {
@@ -262,7 +260,7 @@ type ServerInfo struct {
Data *ServerInfoData `json:"data"`
}
// ServerInfoHandler - GET /minio/admin/v1/info
// ServerInfoHandler - GET /minio/admin/v2/info
// ----------
// Get server information
func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Request) {
@@ -303,7 +301,7 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
writeSuccessResponseJSON(w, jsonBytes)
}
// ServerInfoHandler - GET /minio/admin/v1/storageinfo
// ServerInfoHandler - GET /minio/admin/v2/storageinfo
// ----------
// Get server information
func (a adminAPIHandlers) StorageInfoHandler(w http.ResponseWriter, r *http.Request) {
@@ -355,7 +353,7 @@ type ServerNetReadPerfInfo struct {
Error string `json:"error,omitempty"`
}
// PerfInfoHandler - GET /minio/admin/v1/performance?perfType={perfType}
// PerfInfoHandler - GET /minio/admin/v2/performance?perfType={perfType}
// ----------
// Get all performance information based on input type
// Supported types = drive
@@ -561,7 +559,7 @@ type StartProfilingResult struct {
Error string `json:"error"`
}
// StartProfilingHandler - POST /minio/admin/v1/profiling/start?profilerType={profilerType}
// StartProfilingHandler - POST /minio/admin/v2/profiling/start?profilerType={profilerType}
// ----------
// Enable server profiling
func (a adminAPIHandlers) StartProfilingHandler(w http.ResponseWriter, r *http.Request) {
@@ -643,7 +641,7 @@ func (f dummyFileInfo) ModTime() time.Time { return f.modTime }
func (f dummyFileInfo) IsDir() bool { return f.isDir }
func (f dummyFileInfo) Sys() interface{} { return f.sys }
// DownloadProfilingHandler - POST /minio/admin/v1/profiling/download
// DownloadProfilingHandler - POST /minio/admin/v2/profiling/download
// ----------
// Download profiling information of all nodes in a zip format
func (a adminAPIHandlers) DownloadProfilingHandler(w http.ResponseWriter, r *http.Request) {
@@ -725,7 +723,7 @@ func extractHealInitParams(vars map[string]string, qParms url.Values, r io.Reade
return
}
// HealHandler - POST /minio/admin/v1/heal/
// HealHandler - POST /minio/admin/v2/heal/
// -----------
// Start heal processing and return heal status items.
//
@@ -927,8 +925,8 @@ func (a adminAPIHandlers) BackgroundHealStatusHandler(w http.ResponseWriter, r *
func validateAdminReq(ctx context.Context, w http.ResponseWriter, r *http.Request) ObjectLayer {
// Get current object layer instance.
objectAPI := globalObjectAPI
if objectAPI == nil || globalNotificationSys == nil || globalIAMSys == nil {
objectAPI := newObjectLayerWithoutSafeModeFn()
if objectAPI == nil || globalNotificationSys == nil {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
return nil
}
@@ -992,492 +990,19 @@ func toAdminAPIErr(ctx context.Context, err error) APIError {
HTTPStatusCode: e.StatusCode,
}
default:
apiErr = errorCodes.ToAPIErr(toAdminAPIErrCode(ctx, err))
if err == errConfigNotFound {
apiErr = APIError{
Code: "XMinioConfigError",
Description: err.Error(),
HTTPStatusCode: http.StatusNotFound,
}
} else {
apiErr = errorCodes.ToAPIErr(toAdminAPIErrCode(ctx, err))
}
}
return apiErr
}
// RemoveUser - DELETE /minio/admin/v1/remove-user?accessKey=<access_key>
func (a adminAPIHandlers) RemoveUser(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "RemoveUser")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL)
return
}
vars := mux.Vars(r)
accessKey := vars["accessKey"]
if err := globalIAMSys.DeleteUser(accessKey); err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other MinIO peers to delete user.
for _, nerr := range globalNotificationSys.DeleteUser(accessKey) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// ListUsers - GET /minio/admin/v1/list-users
func (a adminAPIHandlers) ListUsers(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ListUsers")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
allCredentials, err := globalIAMSys.ListUsers()
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
data, err := json.Marshal(allCredentials)
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
password := globalActiveCred.SecretKey
econfigData, err := madmin.EncryptData(password, data)
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
writeSuccessResponseJSON(w, econfigData)
}
// GetUserInfo - GET /minio/admin/v1/user-info
func (a adminAPIHandlers) GetUserInfo(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "GetUserInfo")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
vars := mux.Vars(r)
name := vars["accessKey"]
userInfo, err := globalIAMSys.GetUserInfo(name)
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
data, err := json.Marshal(userInfo)
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
writeSuccessResponseJSON(w, data)
}
// UpdateGroupMembers - PUT /minio/admin/v1/update-group-members
func (a adminAPIHandlers) UpdateGroupMembers(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "UpdateGroupMembers")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
defer r.Body.Close()
data, err := ioutil.ReadAll(r.Body)
if err != nil {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
return
}
var updReq madmin.GroupAddRemove
err = json.Unmarshal(data, &updReq)
if err != nil {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
return
}
if updReq.IsRemove {
err = globalIAMSys.RemoveUsersFromGroup(updReq.Group, updReq.Members)
} else {
err = globalIAMSys.AddUsersToGroup(updReq.Group, updReq.Members)
}
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other MinIO peers to load group.
for _, nerr := range globalNotificationSys.LoadGroup(updReq.Group) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// GetGroup - /minio/admin/v1/group?group=mygroup1
func (a adminAPIHandlers) GetGroup(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "GetGroup")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
vars := mux.Vars(r)
group := vars["group"]
gdesc, err := globalIAMSys.GetGroupDescription(group)
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
body, err := json.Marshal(gdesc)
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
writeSuccessResponseJSON(w, body)
}
// ListGroups - GET /minio/admin/v1/groups
func (a adminAPIHandlers) ListGroups(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ListGroups")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
groups, err := globalIAMSys.ListGroups()
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
body, err := json.Marshal(groups)
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
writeSuccessResponseJSON(w, body)
}
// SetGroupStatus - PUT /minio/admin/v1/set-group-status?group=mygroup1&status=enabled
func (a adminAPIHandlers) SetGroupStatus(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "SetGroupStatus")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
vars := mux.Vars(r)
group := vars["group"]
status := vars["status"]
var err error
if status == statusEnabled {
err = globalIAMSys.SetGroupStatus(group, true)
} else if status == statusDisabled {
err = globalIAMSys.SetGroupStatus(group, false)
} else {
err = errInvalidArgument
}
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other MinIO peers to reload user.
for _, nerr := range globalNotificationSys.LoadGroup(group) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// SetUserStatus - PUT /minio/admin/v1/set-user-status?accessKey=<access_key>&status=[enabled|disabled]
func (a adminAPIHandlers) SetUserStatus(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "SetUserStatus")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL)
return
}
vars := mux.Vars(r)
accessKey := vars["accessKey"]
status := vars["status"]
// Custom IAM policies not allowed for admin user.
if accessKey == globalActiveCred.AccessKey {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidRequest), r.URL)
return
}
if err := globalIAMSys.SetUserStatus(accessKey, madmin.AccountStatus(status)); err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other MinIO peers to reload user.
for _, nerr := range globalNotificationSys.LoadUser(accessKey, false) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// AddUser - PUT /minio/admin/v1/add-user?accessKey=<access_key>
func (a adminAPIHandlers) AddUser(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "AddUser")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
// Deny if WORM is enabled
if globalWORMEnabled {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL)
return
}
vars := mux.Vars(r)
accessKey := vars["accessKey"]
// Custom IAM policies not allowed for admin user.
if accessKey == globalActiveCred.AccessKey {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAddUserInvalidArgument), r.URL)
return
}
if r.ContentLength > maxEConfigJSONSize || r.ContentLength == -1 {
// More than maxConfigSize bytes were available
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminConfigTooLarge), r.URL)
return
}
password := globalActiveCred.SecretKey
configBytes, err := madmin.DecryptData(password, io.LimitReader(r.Body, r.ContentLength))
if err != nil {
logger.LogIf(ctx, err)
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminConfigBadJSON), r.URL)
return
}
var uinfo madmin.UserInfo
if err = json.Unmarshal(configBytes, &uinfo); err != nil {
logger.LogIf(ctx, err)
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminConfigBadJSON), r.URL)
return
}
if err = globalIAMSys.SetUser(accessKey, uinfo); err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other Minio peers to reload user
for _, nerr := range globalNotificationSys.LoadUser(accessKey, false) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// InfoCannedPolicy - GET /minio/admin/v1/info-canned-policy?name={policyName}
func (a adminAPIHandlers) InfoCannedPolicy(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "InfoCannedPolicy")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
data, err := globalIAMSys.InfoPolicy(mux.Vars(r)["name"])
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
w.Write(data)
w.(http.Flusher).Flush()
}
// ListCannedPolicies - GET /minio/admin/v1/list-canned-policies
func (a adminAPIHandlers) ListCannedPolicies(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "ListCannedPolicies")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
policies, err := globalIAMSys.ListPolicies()
if err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
if err = json.NewEncoder(w).Encode(policies); err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
w.(http.Flusher).Flush()
}
// RemoveCannedPolicy - DELETE /minio/admin/v1/remove-canned-policy?name=<policy_name>
func (a adminAPIHandlers) RemoveCannedPolicy(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "RemoveCannedPolicy")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
vars := mux.Vars(r)
policyName := vars["name"]
// Deny if WORM is enabled
if globalWORMEnabled {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL)
return
}
if err := globalIAMSys.DeletePolicy(policyName); err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other MinIO peers to delete policy
for _, nerr := range globalNotificationSys.DeletePolicy(policyName) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// AddCannedPolicy - PUT /minio/admin/v1/add-canned-policy?name=<policy_name>
func (a adminAPIHandlers) AddCannedPolicy(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "AddCannedPolicy")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
vars := mux.Vars(r)
policyName := vars["name"]
// Deny if WORM is enabled
if globalWORMEnabled {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL)
return
}
// Error out if Content-Length is missing.
if r.ContentLength <= 0 {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMissingContentLength), r.URL)
return
}
// Error out if Content-Length is beyond allowed size.
if r.ContentLength > maxBucketPolicySize {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrEntityTooLarge), r.URL)
return
}
iamPolicy, err := iampolicy.ParseConfig(io.LimitReader(r.Body, r.ContentLength))
if err != nil {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMalformedPolicy), r.URL)
return
}
// Version in policy must not be empty
if iamPolicy.Version == "" {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMalformedPolicy), r.URL)
return
}
if err = globalIAMSys.SetPolicy(policyName, *iamPolicy); err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other MinIO peers to reload policy
for _, nerr := range globalNotificationSys.LoadPolicy(policyName) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// SetPolicyForUserOrGroup - PUT /minio/admin/v1/set-policy?policy=xxx&user-or-group=?[&is-group]
func (a adminAPIHandlers) SetPolicyForUserOrGroup(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "SetPolicyForUserOrGroup")
objectAPI := validateAdminReq(ctx, w, r)
if objectAPI == nil {
return
}
vars := mux.Vars(r)
policyName := vars["policyName"]
entityName := vars["userOrGroup"]
isGroup := vars["isGroup"] == "true"
// Deny if WORM is enabled
if globalWORMEnabled {
writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrMethodNotAllowed), r.URL)
return
}
if err := globalIAMSys.PolicyDBSet(entityName, policyName, isGroup); err != nil {
writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
return
}
// Notify all other MinIO peers to reload policy
for _, nerr := range globalNotificationSys.LoadPolicyMapping(entityName, isGroup) {
if nerr.Err != nil {
logger.GetReqInfo(ctx).SetTags("peerAddress", nerr.Host.String())
logger.LogIf(ctx, nerr.Err)
}
}
}
// Returns true if the trace.Info should be traced,
// false if certain conditions are not met.
// - input entry is not of the type *trace.Info*
@@ -1495,7 +1020,7 @@ func mustTrace(entry interface{}, trcAll, errOnly bool) bool {
return trace
}
// TraceHandler - POST /minio/admin/v1/trace
// TraceHandler - POST /minio/admin/v2/trace
// ----------
// The handler sends http trace to the connected HTTP client.
func (a adminAPIHandlers) TraceHandler(w http.ResponseWriter, r *http.Request) {
@@ -1519,13 +1044,16 @@ func (a adminAPIHandlers) TraceHandler(w http.ResponseWriter, r *http.Request) {
// Use buffered channel to take care of burst sends or slow w.Write()
traceCh := make(chan interface{}, 4000)
peers := getRestClients(getRemoteHosts(globalEndpoints))
peers := getRestClients(globalEndpoints)
globalHTTPTrace.Subscribe(traceCh, doneCh, func(entry interface{}) bool {
return mustTrace(entry, trcAll, trcErr)
})
for _, peer := range peers {
if peer == nil {
continue
}
peer.Trace(traceCh, doneCh, trcAll, trcErr)
}
@@ -1583,12 +1111,14 @@ func (a adminAPIHandlers) ConsoleLogHandler(w http.ResponseWriter, r *http.Reque
defer close(doneCh)
logCh := make(chan interface{}, 4000)
remoteHosts := getRemoteHosts(globalEndpoints)
peers := getRestClients(remoteHosts)
peers := getRestClients(globalEndpoints)
globalConsoleSys.Subscribe(logCh, doneCh, node, limitLines, logKind, nil)
for _, peer := range peers {
if peer == nil {
continue
}
if node == "" || strings.EqualFold(peer.host.Name, node) {
peer.ConsoleLog(logCh, doneCh)
}
@@ -1620,7 +1150,7 @@ func (a adminAPIHandlers) ConsoleLogHandler(w http.ResponseWriter, r *http.Reque
}
}
// KMSKeyStatusHandler - GET /minio/admin/v1/kms/key/status?key-id=<master-key-id>
// KMSKeyStatusHandler - GET /minio/admin/v2/kms/key/status?key-id=<master-key-id>
func (a adminAPIHandlers) KMSKeyStatusHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "KMSKeyStatusHandler")
@@ -1702,7 +1232,7 @@ func (a adminAPIHandlers) KMSKeyStatusHandler(w http.ResponseWriter, r *http.Req
writeSuccessResponseJSON(w, resp)
}
// ServerHardwareInfoHandler - GET /minio/admin/v1/hardwareinfo?Type={hwType}
// ServerHardwareInfoHandler - GET /minio/admin/v2/hardwareinfo?Type={hwType}
// ----------
// Get all hardware information based on input type
// Supported types = cpu