The `csi_plugins` and `csi_volumes` tables were missing support for
snapshot persist and restore. This means restoring a snapshot would
result in missing information for CSI.
In tests where the logger is a test logger, emitting a trace log in a
background thread while it's shutting down may trigger a panic. Thus
avoid logging Trace if err != nil. Note that we already log an error
when err isn't a trace.
This fixes cases where tests panic with a trace like:
```
panic: Log in goroutine after TestAllocGarbageCollector_MakeRoomFor_MaxAllocs has completed
goroutine 30 [running]:
testing.(*common).logDepth(0xc000aa9e60, 0xc000c4a000, 0xab, 0x3)
/usr/local/Cellar/go/1.14/libexec/src/testing/testing.go:680 +0x4d3
testing.(*common).log(...)
/usr/local/Cellar/go/1.14/libexec/src/testing/testing.go:662
testing.(*common).Logf(0xc000aa9e60, 0x690b941, 0x4, 0xc001366c00, 0x2, 0x2)
/usr/local/Cellar/go/1.14/libexec/src/testing/testing.go:701 +0x7e
github.com/hashicorp/nomad/helper/testlog.(*writer).Write(0xc000a82a60, 0xc0000b48c0, 0xab, 0x13f, 0x0, 0x0, 0x0)
/Users/notnoop/go/src/github.com/hashicorp/nomad/helper/testlog/testlog.go:34 +0x106
github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog.(*writer).Flush(0xc000a80900, 0xbf9870f000000001, 0x20a87556e, 0x8b12bc0)
/Users/notnoop/go/src/github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog/writer.go:29 +0x14f
github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog.(*intLogger).log(0xc000e2c180, 0xc0003b6880, 0x17, 0x1, 0x6974edc, 0x22, 0xc000db57a0, 0x6, 0x6)
/Users/notnoop/go/src/github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog/intlogger.go:139 +0x15d
github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog.(*intLogger).Trace(0xc000e2c180, 0x6974edc, 0x22, 0xc000db57a0, 0x6, 0x6)
/Users/notnoop/go/src/github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog/intlogger.go:446 +0x7a
github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog.(*interceptLogger).Trace(0xc0002f1ad0, 0x6974edc, 0x22, 0xc000db57a0, 0x6, 0x6)
/Users/notnoop/go/src/github.com/hashicorp/nomad/vendor/github.com/hashicorp/go-hclog/interceptlogger.go:48 +0x9c
github.com/hashicorp/nomad/nomad/drainer.(*drainingJobWatcher).watch(0xc0002f2380)
/Users/notnoop/go/src/github.com/hashicorp/nomad/nomad/drainer/watch_jobs.go:147 +0x1125
created by github.com/hashicorp/nomad/nomad/drainer.NewDrainingJobWatcher
/Users/notnoop/go/src/github.com/hashicorp/nomad/nomad/drainer/watch_jobs.go:89 +0x1e3
FAIL github.com/hashicorp/nomad/client 10.605s
FAIL
```
* added method to retrieve all scaling policies for use in snapshotting, plus test
* better testing for ScalingPoliciesByNamespace
* added scaling policy snapshot persist and restore (and test of restore)
manually tested snapshot restore.
resolves#7539
* nomad/structs/csi: delete just one plugin type from a node
* nomad/structs/csi: add DeleteAlloc
* nomad/state/state_store: add deleteJobFromPlugin
* nomad/state/state_store: use DeleteAlloc not DeleteNodeType
* move CreateTestCSIPlugin to state to avoid an import cycle
* nomad/state/state_store_test: delete a plugin by deleting its jobs
* nomad/*_test: move CreateTestCSIPlugin to state
* nomad/state/state_store: update one plugin per transaction
* command/plugin_status_test: move CreateTestCSIPlugin
* nomad: csi: handle nils CSIPlugin methods, clarity
If not in use and not changing external ids, it should not be an error to register a volume again.
* nomad/state/state_store: make volume registration idempotent
TestStateStore_Indexes specifically tests for `nodes` index, but asserts
on the exact number of indexes present in the state. This is fragile
and will break almost everytime we add a state index.
Plugins track the client nodes where they are placed. On client
updates, remove the client from the plugin tracking if the client is
no longer running an instance of that controller/node plugin.
Extends the state store tests to ensure deregistration works as
expected and that controllers and nodes are being tracked
independently.
- tg.Count defaults to tg.Scaling.Min if present (falls back on previous default of 1 if Scaling is absent)
- Validate() enforces tg.Scaling.Min <= tg.Count <= tg.Scaling.Max
modification in ApiScalingPolicyToStructs, api.TaskGroup.Validate so that defaults are handled for TaskGroup.Count and
* nomad/structs/csi: split CanWrite into health, in use
* scheduler/scheduler: expose AllocByID in the state interface
* nomad/state/state_store_test
* scheduler/stack: SetJobID on the matcher
* scheduler/feasible: when a volume writer is in use, check if it's us
* scheduler/feasible: remove SetJob
* nomad/state/state_store: denormalize allocs before Claim
* nomad/structs/csi: return errors on claim, with context
* nomad/csi_endpoint_test: new alloc doesn't look like an update
* nomad/state/state_store_test: change test reference to CanWrite
Add mount_options to both the volume definition on registration and to the volume block in the group where the volume is requested. If both are specified, the options provided in the request replace the options defined in the volume. They get passed to the NodePublishVolume, which causes the node plugin to actually mount the volume on the host.
Individual tasks just mount bind into the host mounted volume (unchanged behavior). An operator can mount the same volume with different options by specifying it twice in the group context.
closes#7007
* nomad/structs/volumes: add MountOptions to volume request
* jobspec/test-fixtures/basic.hcl: add mount_options to volume block
* jobspec/parse_test: add expected MountOptions
* api/tasks: add mount_options
* jobspec/parse_group: use hcl decode not mapstructure, mount_options
* client/allocrunner/csi_hook: pass MountOptions through
client/allocrunner/csi_hook: add a VolumeMountOptions
client/allocrunner/csi_hook: drop Options
client/allocrunner/csi_hook: use the structs options
* client/pluginmanager/csimanager/interface: UsageOptions.MountOptions
* client/pluginmanager/csimanager/volume: pass MountOptions in capabilities
* plugins/csi/plugin: remove todo 7007 comment
* nomad/structs/csi: MountOptions
* api/csi: add options to the api for parsing, match structs
* plugins/csi/plugin: move VolumeMountOptions to structs
* api/csi: use specific type for mount_options
* client/allocrunner/csi_hook: merge MountOptions here
* rename CSIOptions to CSIMountOptions
* client/allocrunner/csi_hook
* client/pluginmanager/csimanager/volume
* nomad/structs/csi
* plugins/csi/fake/client: add PrevVolumeCapability
* plugins/csi/plugin
* client/pluginmanager/csimanager/volume_test: remove debugging
* client/pluginmanager/csimanager/volume: fix odd merging logic
* api: rename CSIOptions -> CSIMountOptions
* nomad/csi_endpoint: remove a 7007 comment
* command/alloc_status: show mount options in the volume list
* nomad/structs/csi: include MountOptions in the volume stub
* api/csi: add MountOptions to stub
* command/volume_status_csi: clean up csiVolMountOption, add it
* command/alloc_status: csiVolMountOption lives in volume_csi_status
* command/node_status: display mount flags
* nomad/structs/volumes: npe
* plugins/csi/plugin: npe in ToCSIRepresentation
* jobspec/parse_test: expand volume parse test cases
* command/agent/job_endpoint: ApiTgToStructsTG needs MountOptions
* command/volume_status_csi: copy paste error
* jobspec/test-fixtures/basic: hclfmt
* command/volume_status_csi: clean up csiVolMountOption
* acl/policy: add the volume ACL policies
* nomad/csi_endpoint: enforce ACLs for volume access
* nomad/search_endpoint_oss: volume acls
* acl/acl: add plugin read as a global policy
* acl/policy: add PluginPolicy global cap type
* nomad/csi_endpoint: check the global plugin ACL policy
* nomad/mock/acl: PluginPolicy
* nomad/csi_endpoint: fix list rebase
* nomad/core_sched_test: new test since #7358
* nomad/csi_endpoint_test: use correct permissions for list
* nomad/csi_endpoint: allowCSIMount keeps ACL checks together
* nomad/job_endpoint: check mount permission for jobs
* nomad/job_endpoint_test: need plugin read, too
* nomad/state/schema: use the namespace compound index
* scheduler/scheduler: CSIVolumeByID interface signature namespace
* scheduler/stack: SetJob on CSIVolumeChecker to capture namespace
* scheduler/feasible: pass the captured namespace to CSIVolumeByID
* nomad/state/state_store: use namespace in csi_volume index
* nomad/fsm: pass namespace to CSIVolumeDeregister & Claim
* nomad/core_sched: pass the namespace in volumeClaimReap
* nomad/node_endpoint_test: namespaces in Claim testing
* nomad/csi_endpoint: pass RequestNamespace to state.*
* nomad/csi_endpoint_test: appropriately failed test
* command/alloc_status_test: appropriately failed test
* node_endpoint_test: avoid notTheNamespace for the job
* scheduler/feasible_test: call SetJob to capture the namespace
* nomad/csi_endpoint: ACL check the req namespace, query by namespace
* nomad/state/state_store: remove deregister namespace check
* nomad/state/state_store: remove unused CSIVolumes
* scheduler/feasible: CSIVolumeChecker SetJob -> SetNamespace
* nomad/csi_endpoint: ACL check
* nomad/state/state_store_test: remove call to state.CSIVolumes
* nomad/core_sched_test: job namespace match so claim gc works
This changeset implements the remaining controller detach RPCs: server-to-client and client-to-controller. The tests also uncovered a bug in our RPC for claims which is fixed here; the volume claim RPC is used for both claiming and releasing a claim on a volume. We should only submit a controller publish RPC when the claim is new and not when it's being released.
Nomad clients will push node updates during client restart which can
cause an extra claim for a volume by the same alloc. If an alloc
already claims a volume, we can allow it to be treated as a valid
claim and continue.
* nomad/structs/csi: new RemoteID() uses the ExternalID if set
* nomad/csi_endpoint: pass RemoteID to volume request types
* client/pluginmanager/csimanager/volume: pass RemoteID to NodePublishVolume
* api/allocations: GetTaskGroup finds the taskgroup struct
* command/node_status: display CSI volume names
* nomad/state/state_store: new CSIVolumesByNodeID
* nomad/state/iterator: new SliceIterator type implements memdb.ResultIterator
* nomad/csi_endpoint: deal with a slice of volumes
* nomad/state/state_store: CSIVolumesByNodeID return a SliceIterator
* nomad/structs/csi: CSIVolumeListRequest takes a NodeID
* nomad/csi_endpoint: use the return iterator
* command/agent/csi_endpoint: parse query params for CSIVolumes.List
* api/nodes: new CSIVolumes to list volumes by node
* command/node_status: use the new list endpoint to print volumes
* nomad/state/state_store: error messages consider the operator
* command/node_status: include the Provider
