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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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10
cmd/admin-heal-ops.go
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@@ -660,7 +660,7 @@ func (h *healSequence) traverseAndHeal() {
func (h *healSequence) healMinioSysMeta(metaPrefix string) func() error {
return func() error {
// Get current object layer instance.
objectAPI := globalObjectAPI
objectAPI := newObjectLayerWithoutSafeModeFn()
if objectAPI == nil {
return errServerNotInitialized
}
@@ -692,7 +692,7 @@ func (h *healSequence) healDiskFormat() error {
}
// Get current object layer instance.
objectAPI := globalObjectAPI
objectAPI := newObjectLayerWithoutSafeModeFn()
if objectAPI == nil {
return errServerNotInitialized
}
@@ -712,7 +712,7 @@ func (h *healSequence) healBuckets() error {
}
// Get current object layer instance.
objectAPI := globalObjectAPI
objectAPI := newObjectLayerWithoutSafeModeFn()
if objectAPI == nil {
return errServerNotInitialized
}
@@ -734,7 +734,7 @@ func (h *healSequence) healBuckets() error {
// healBucket - traverses and heals given bucket
func (h *healSequence) healBucket(bucket string) error {
// Get current object layer instance.
objectAPI := globalObjectAPI
objectAPI := newObjectLayerWithoutSafeModeFn()
if objectAPI == nil {
return errServerNotInitialized
}
@@ -771,7 +771,7 @@ func (h *healSequence) healObject(bucket, object string) error {
}
// Get current object layer instance.
objectAPI := globalObjectAPI
objectAPI := newObjectLayerWithoutSafeModeFn()
if objectAPI == nil {
return errServerNotInitialized
}