* Fix plugin capability sorting.
The `sort.StringSlice` method in the stdlib doesn't actually sort, but
instead constructs a sorting type which you call `Sort()` on.
* Sort allocations for plugins by modify index.
Present allocations in modify index order so that newest allocations
show up at the top of the list. This results in sorted allocs in
`nomad plugin status :id`, just like `nomad job status :id`.
* Sort allocations for volumes in HTTP response.
Present allocations in modify index order so that newest allocations
show up at the top of the list. This results in sorted allocs in
`nomad volume status :id`, just like `nomad job status :id`.
This is implemented in the HTTP response and not in the state store
because the state store maintains two separate lists of allocs that
are merged before sending over the API.
* Fix length of alloc IDs in `nomad volume status` output
The `related` query param is used to indicate that the request should
return a list of related (next, previous, and blocked) evaluations.
Co-authored-by: Jasmine Dahilig <jasmine@hashicorp.com>
CSI `CreateVolume` RPC is idempotent given that the topology,
capabilities, and parameters are unchanged. CSI volumes have many
user-defined fields that are immutable once set, and many fields that
are not user-settable.
Update the `Register` RPC so that updating a volume via the API merges
onto any existing volume without touching Nomad-controlled fields,
while validating it with the same strict requirements expected for
idempotent `CreateVolume` RPCs.
Also, clarify that this state store method is used for everything, not just
for the `Register` RPC.
The `CSIPlugin.List` RPC was intended to accept a prefix to filter the
list of plugins being listed. This was being accidentally being done
in the state store instead, which contributed to incorrect filtering
behavior for plugins in the `volume plugin status` command.
Move the prefix matching into the RPC so that it calls the
prefix-matching method in the state store if we're looking for a
prefix.
Update the `plugin status command` to accept a prefix for the plugin
ID argument so that it matches the expected behavior of other commands.
When using a prefix value and the * wildcard for namespace, the endpoint
would not take the prefix value into consideration due to the order in
which the checks were executed but also the logic for retrieving volumes
from the state store.
This commit changes the order to check for a prefix first and wraps the
result iterator of the state store query in a filter to apply the
prefix.
The paginator logic was built when go-memdb iterators would return items
ordered lexicographically by their ID prefixes, but #12054 added the
option for some tables to return results ordered by their `CreateIndex`
instead, which invalidated the previous paginator assumption.
The iterator used for pagination must still return results in some order
so that the paginator can properly handle requests where the next_token
value is not present in the results anymore (e.g., the eval was GC'ed).
In these situations, the paginator will start the returned page in the
first element right after where the requested token should've been.
This commit moves the logic to generate pagination tokens from the
elements being paginated to the iterator itself so that callers can have
more control over the token format to make sure they are properly
ordered and stable.
It also allows configuring the paginator as being ordered in ascending
or descending order, which is relevant when looking for a token that may
not be present anymore.
If a plugin job fails before successfully fingerprinting the plugins,
the plugin will not exist when we try to delete the job. Tolerate
missing plugins.
These API endpoints now return results in chronological order. They
can return results in reverse chronological order by setting the
query parameter ascending=true.
- Eval.List
- Deployment.List
When an allocation is updated, the job summary for the associated job
is also updated. CSI uses the job summary to set the expected count
for controller and node plugins. We incorrectly used the allocation's
server status instead of the job status when deciding whether to
update or remove the job from the plugins. This caused a node drain or
other terminal state for an allocation to clear the expected count for
the entire plugin.
Use the job status to guide whether to update or remove the expected
count.
The existing CSI tests for the state store incorrectly modeled the
updates we received from servers vs those we received from clients,
leading to test assertions that passed when they should not.
Rework the tests to clarify each step in the lifecycle and rename CSI state
store functions for clarity
* The volume claim GC method and volumewatcher both have logic
collecting terminal allocations that duplicates most of the logic
that's now in the state store's `CSIVolumeDenormalize` method. Copy
this logic into the state store so that all code paths have the same
view of the past claims.
* Remove logic in the volume claim GC that now lives in the state
store's `CSIVolumeDenormalize` method.
* Remove logic in the volumewatcher that now lives in the state
store's `CSIVolumeDenormalize` method.
* Remove logic in the node unpublish RPC that now lives in the state
store's `CSIVolumeDenormalize` method.
In the client's `(*csiHook) Postrun()` method, we make an unpublish
RPC that includes a claim in the `CSIVolumeClaimStateUnpublishing`
state and using the mode from the client. But then in the
`(*CSIVolume) Unpublish` RPC handler, we query the volume from the
state store (because we only get an ID from the client). And when we
make the client RPC for the node unpublish step, we use the _current
volume's_ view of the mode. If the volume's mode has been changed
before the old allocations can have their claims released, then we end
up making a CSI RPC that will never succeed.
Why does this code path get the mode from the volume and not the
claim? Because the claim written by the GC job in `(*CoreScheduler)
csiVolumeClaimGC` doesn't have a mode. Instead it just writes a claim
in the unpublishing state to ensure the volumewatcher detects a "past
claim" change and reaps all the claims on the volumes.
Fix this by ensuring that the `CSIVolumeDenormalize` creates past
claims for all nil allocations with a correct access mode set.
* csi: resolve invalid claim states on read
It's currently possible for CSI volumes to be claimed by allocations
that no longer exist. This changeset asserts a reasonable state at
the state store level by registering these nil allocations as "past
claims" on any read. This will cause any pass through the periodic GC
or volumewatcher to trigger the unpublishing workflow for those claims.
* csi: make feasibility check errors more understandable
When the feasibility checker finds we have no free write claims, it
checks to see if any of those claims are for the job we're currently
scheduling (so that earlier versions of a job can't block claims for
new versions) and reports a conflict if the volume can't be scheduled
so that the user can fix their claims. But when the checker hits a
claim that has a GCd allocation, the state is recoverable by the
server once claim reaping completes and no user intervention is
required; the blocked eval should complete. Differentiate the
scheduler error produced by these two conditions.
The command line client sends a specific volume ID, but this isn't
enforced at the API level and we were incorrectly using a prefix match
for volume deregistration, resulting in cases where a volume with a
shorter ID that's a prefix of another volume would be deregistered
instead of the intended volume.
Some operators use very long group/task `shutdown_delay` settings to
safely drain network connections to their workloads after service
deregistration. But during incident response, they may want to cause
that drain to be skipped so they can quickly shed load.
Provide a `-no-shutdown-delay` flag on the `nomad alloc stop` and
`nomad job stop` commands that bypasses the delay. This sets a new
desired transition state on the affected allocations that the
allocation/task runner will identify during pre-kill on the client.
Note (as documented here) that using this flag will almost always
result in failed inbound network connections for workloads as the
tasks will exit before clients receive updated service discovery
information and won't be gracefully drained.
API queries can request pagination using the `NextToken` and `PerPage`
fields of `QueryOptions`, when supported by the underlying API.
Add a `NextToken` field to the `structs.QueryMeta` so that we have a
common field across RPCs to tell the caller where to resume paging
from on their next API call. Include this field on the `api.QueryMeta`
as well so that it's available for future versions of List HTTP APIs
that wrap the response with `QueryMeta` rather than returning a simple
list of structs. In the meantime callers can get the `X-Nomad-NextToken`.
Add pagination to the `Eval.List` RPC by checking for pagination token
and page size in `QueryOptions`. This will allow resuming from the
last ID seen so long as the query parameters and the state store
itself are unchanged between requests.
Add filtering by job ID or evaluation status over the results we get
out of the state store.
Parse the query parameters of the `Eval.List` API into the arguments
expected for filtering in the RPC call.
This change modifies the Nomad job register and deregister RPCs to
accept an updated option set which includes eval priority. This
param is optional and override the use of the job priority to set
the eval priority.
In order to ensure all evaluations as a result of the request use
the same eval priority, the priority is shared to the
allocReconciler and deploymentWatcher. This creates a new
distinction between eval priority and job priority.
The Nomad agent HTTP API has been modified to allow setting the
eval priority on job update and delete. To keep consistency with
the current v1 API, job update accepts this as a payload param;
job delete accepts this as a query param.
Any user supplied value is validated within the agent HTTP handler
removing the need to pass invalid requests to the server.
The register and deregister opts functions now all for setting
the eval priority on requests.
The change includes a small change to the DeregisterOpts function
which handles nil opts. This brings the function inline with the
RegisterOpts.
This fixes a bug in the event stream API where it currently interprets
namespace=* as an actual namespace, not a wildcard. When Nomad parses
incoming requests, it sets namespace to default if not specified, which
means the request namespace will never be an empty string, which is what
the event subscription was checking for. This changes the conditional
logic to check for a wildcard namespace instead of an empty one.
It also updates some event tests to include the default namespace in the
subscription to match current behavior.
Fixes#10903
This PR implements a new "System Batch" scheduler type. Jobs can
make use of this new scheduler by setting their type to 'sysbatch'.
Like the name implies, sysbatch can be thought of as a hybrid between
system and batch jobs - it is for running short lived jobs intended to
run on every compatible node in the cluster.
As with batch jobs, sysbatch jobs can also be periodic and/or parameterized
dispatch jobs. A sysbatch job is considered complete when it has been run
on all compatible nodes until reaching a terminal state (success or failed
on retries).
Feasibility and preemption are governed the same as with system jobs. In
this PR, the update stanza is not yet supported. The update stanza is sill
limited in functionality for the underlying system scheduler, and is
not useful yet for sysbatch jobs. Further work in #4740 will improve
support for the update stanza and deployments.
Closes#2527
Glint pulled in an updated version of mitchellh/go-testing-interface
which broke some existing tests because the update added a Parallel()
method to testing.T. This switches to the standard library testing.TB
which doesn't have a Parallel() method.
Registration of Nomad volumes previously allowed for a single volume
capability (access mode + attachment mode pair). The recent `volume create`
command requires that we pass a list of requested capabilities, but the
existing workflow for claiming volumes and attaching them on the client
assumed that the volume's single capability was correct and unchanging.
Add `AccessMode` and `AttachmentMode` to `CSIVolumeClaim`, use these fields to
set the initial claim value, and add backwards compatibility logic to handle
the existing volumes that already have claims without these fields.
The HTTP test to create CSI volumes depends on having a controller plugin to
talk to, but the test was using a node-only plugin, which allows it to
silently ignore the missing controller.
node drain: use msgtype on txn so that events are emitted
wip: encoding extension to add Node.Drain field back to API responses
new approach for hiding Node.SecretID in the API, using `json` tag
documented this approach in the contributing guide
refactored the JSON handlers with extensions
modified event stream encoding to use the go-msgpack encoders with the extensions
Add a `PerAlloc` field to volume requests that directs the scheduler to test
feasibility for volumes with a source ID that includes the allocation index
suffix (ex. `[0]`), rather than the exact source ID.
Read the `PerAlloc` field when making the volume claim at the client to
determine if the allocation index suffix (ex. `[0]`) should be added to the
volume source ID.
Callers of `CSIVolumeByID` are generally assuming they should receive a single
volume. This potentially results in feasibility checking being performed
against the wrong volume if a volume's ID is a prefix substring of other
volume (for example: "test" and "testing").
Removing the incorrect prefix matching from `CSIVolumeByID` breaks prefix
matching in the command line client. Add the required elements for prefix
matching to the commands and API.
* Fixup uses of `sanity`
* Remove unnecessary comments.
These checks are better explained by earlier comments about
the context of the test. Per @tgross, moved the tests together
to better reinforce the overall shared context.
* Update nomad/fsm_test.go
RPC endpoints for the user-driven APIs (`UpsertOneTimeToken` and
`ExchangeOneTimeToken`) and token expiration (`ExpireOneTimeTokens`).
Includes adding expiration to the periodic core GC job.
In a deployment with two groups (ex. A and B), if group A's canary becomes
healthy before group B's, the deadline for the overall deployment will be set
to that of group A. When the deployment is promoted, if group A is done it
will not contribute to the next deadline cutoff. Group B's old deadline will
be used instead, which will be in the past and immediately trigger a
deployment progress failure. Reset the progress deadline when the job is
promotion to avoid this bug, and to better conform with implicit user
expectations around how the progress deadline should interact with promotions.
* Prevent Job Statuses from being calculated twice
https://github.com/hashicorp/nomad/pull/8435 introduced atomic eval
insertion iwth job (de-)registration. This change removes a now obsolete
guard which checked if the index was equal to the job.CreateIndex, which
would empty the status. Now that the job regisration eval insetion is
atomic with the registration this check is no longer necessary to set
the job statuses correctly.
* test to ensure only single job event for job register
* periodic e2e
* separate job update summary step
* fix updatejobstability to use copy instead of modified reference of job
* update envoygatewaybindaddresses copy to prevent job diff on null vs empty
* set ConsulGatewayBindAddress to empty map instead of nil
fix nil assertions for empty map
rm unnecessary guard
* fix acl event creation
* allow way to access secretID without exposing it to stream
test that values are omitted
test event creation
test acl events
payloads are pointers
fix failing tests, do all security steps inside constructor
* increase time
* ignore empty tokens
* uncomment line
* changelog
* use full name for events
use evaluation and allocation instead of short name
* update api event stream package and shortnames
* update docs
* make sync; fix typo
* backwards compat not from 1.0.0-beta event stream api changes
* use api types instead of string
* rm backwards compat note that only changed between prereleases
* remove backwards incompat that only existed in prereleases
* prevent duplicate job events
when a job is updated, the job_version table is updated with a structs.Job, this caused there to be multiple job events since we are switching off the change type and not the table
* test length
* add table value to tests
* upsertaclpolicies
* delete acl policies msgtype
* upsert acl policies msgtype
* delete acl tokens msgtype
* acl bootstrap msgtype
wip unsubscribe on token delete
test that subscriptions are closed after an ACL token has been deleted
Start writing policyupdated test
* update test to use before/after policy
* add SubscribeWithACLCheck to run acl checks on subscribe
* update rpc endpoint to use broker acl check
* Add and use subscriptions.closeSubscriptionFunc
This fixes the issue of not being able to defer unlocking the mutex on
the event broker in the for loop.
handle acl policy updates
* rpc endpoint test for terminating acl change
* add comments
Co-authored-by: Kris Hicks <khicks@hashicorp.com>
* Remove Managed Sinks from Nomad
Managed Sinks were a beta feature in Nomad 1.0-beta2. During the beta
period it was determined that this was not a scalable approach to
support community and third party sinks.
* update comment
* changelog
When making updates to CSI plugins, the state store methods that have open
write transactions were querying the state store using the same methods used
by the CSI RPC endpoint, but these method creates their own top-level read
transactions. During concurrent plugin updates (as happens when a plugin job
is stopped), this can cause write skew in the plugin counts.
* Refactor the CSIPlugin query methods to have an implementation method that
accepts a transaction, which can be called with either a read txn or a write
txn.
* Refactor the CSIVolume query methods to have an implementation method that
accepts a transaction, which can be called with either a read txn or a write
txn.
* CSI volumes need to be "denormalized" with their plugins and (optionally)
allocations. Read-only RPC endpoints should take a snapshot so that we can
make multiple state store method calls with a consistent view.
The CSIVolume struct "denormalizes" allocations when it's first queried from
the state store. The CSIVolumeByID method on the state store copies the volume
before denormalizing so that we don't end up with unexpected changes. The
copying has some subtle bugs that meant that Allocations (as well as
Topologies and MountOptions) were not getting copied when expected.
Also, ensure we never write allocations attached to volumes to the state store
during claims.
The unpublish workflow requires that we know the mode (RW vs RO) if we want to
unpublish the node. Update the hook and the Unpublish RPC so that we mark the
claim for release in a new state but leave the mode alone. This fixes a bug
where RO claims were failing node unpublish.
The core job GC doesn't know the mode, but we don't need it for that workflow,
so add a mode specifically for GC; the volumewatcher uses this as a sentinel
to check whether claims (with their specific RW vs RO modes) need to be claimed.
state store: call-out to generic update of job recommendations from job update method
recommendations API work, and http endpoint errors for OSS
support for scaling polices in task block of job spec
add query filters for ScalingPolicy list endpoint
command: nomad scaling policy list: added -job and -type
* Process to send events to configured sinks
This PR adds a SinkManager to a server which is responsible for managing
managed sinks. Managed sinks subscribe to the event broker and send
events to a sink writer (webhook). When changes to the eventstore are
made the sinkmanager and managed sink are responsible for reloading or
starting a new managed sink.
* periodically check in sink progress to raft
Save progress on the last successfully sent index to raft. This allows a
managed sink to resume close to where it left off in the event of a lost
server or leadership change
dereference eventsink so we can accurately use the watchch
When using a pointer to eventsink struct it was updated immediately and our reload logic would not trigger
* network sink rpc/api plumbing
state store methods and restore
upsert sink test
get sink
delete sink
event sink list and tests
go generate new msg types
validate sink on upsert
* go generate
* remove event durability
temporarily removing go-memdb event durability until a new strategy is developed on how to best handled increased durability needs
* drop events table schema and state store methods
* fix neweventbuffer invocations
* adds two base event stream e2e tests
test evaluation filter keys are included
* Apply suggestions from code review
Co-authored-by: Tim Gross <tgross@hashicorp.com>
* gc aftereach
Co-authored-by: Tim Gross <tgross@hashicorp.com>
* use msgtype in upsert node
adds message type to signature for upsert node, update tests, remove placeholder method
* UpsertAllocs msg type test setup
* use upsertallocs with msg type in signature
update test usage of delete node
delete placeholder msgtype method
* add msgtype to upsert evals signature, update test call sites with test setup msg type
handle snapshot upsert eval outside of FSM and ignore eval event
remove placeholder upsertevalsmsgtype
handle job plan rpc and prevent event creation for plan
msgtype cleanup upsertnodeevents
updatenodedrain msgtype
msg type 0 is a node registration event, so set the default to the ignore type
* fix named import
* fix signature ordering on upsertnode to match
properly wire up durable event count
move newline responsibility
moves newline creation from NDJson to the http handler, json stream only encodes and sends now
ignore snapshot restore if broker is disabled
enable dev mode to access event steam without acl
use mapping instead of switch
use pointers for config sizes, remove unused ttl, simplify closed conn logic
Fixes#9017
The ?resources=true query parameter includes resources in the object
stub listings. Specifically:
- For `/v1/nodes?resources=true` both the `NodeResources` and
`ReservedResources` field are included.
- For `/v1/allocations?resources=true` the `AllocatedResources` field is
included.
The ?task_states=false query parameter removes TaskStates from
/v1/allocations responses. (By default TaskStates are included.)
* Node Drain events and Node Events (#8980)
Deployment status updates
handle deployment status updates (paused, failed, resume)
deployment alloc health
generate events from apply plan result
txn err check, slim down deployment event
one ndjson line per index
* consolidate down to node event + type
* fix UpdateDeploymentAllocHealth test invocations
* fix test
This Commit adds an /v1/events/stream endpoint to stream events from.
The stream framer has been updated to include a SendFull method which
does not fragment the data between multiple frames. This essentially
treats the stream framer as a envelope to adhere to the stream framer
interface in the UI.
If the `encode` query parameter is omitted events will be streamed as
newline delimted JSON.
* Node Register/Deregister event sourcing
example upsert node with context
fill in writetxnwithctx
ctx passing to handle event type creation, wip test
node deregistration event
drop Node from registration event
* node batch deregistration
adds an event buffer to hold events from raft changes.
update events to use event buffer
fix append call
provide way to prune buffer items after TTL
event publisher tests
basic publish test
wire up max item ttl
rename package to stream, cleanup exploratory work
subscription filtering
subscription plumbing
allow subscribers to consume events, handle closing subscriptions
back out old exploratory ctx work
fix lint
remove unused ctx bits
add a few comments
fix test
stop publisher on abandon
Stop coercing version of new job to 0 in the state_store, so that we can add
regions to a multi-region deployment. Send new version, rather than existing
version, to MRD to accomodate version-choosing logic changes in ENT.
Co-authored-by: Chris Baker <1675087+cgbaker@users.noreply.github.com>
This commit wraps memdb.DB with a changeTrackerDB, which is a thin
wrapper around memdb.DB which enables go-memdb's TrackChanges on all write
transactions. When the transaction is comitted the changes are sent to
an eventPublisher which will be used to create and emit change events.
debugging TestFSM_ReconcileSummaries
wip
revert back rebase
revert back rebase
fix snapshot to actually use a snapshot
When deregistering a client, CSI plugins running on that client may not get a
chance to fingerprint before being stopped. Account for the case where a
plugin allocation is the last instance of the plugin and has been deleted from
the state store to avoid errors during node deregistration.
The field name `Deployment.TaskGroups` contains a map of `DeploymentState`,
which makes it a little harder to follow state updates when combined with
inconsistent naming conventions, particularly when we also have the state
store or actual `TaskGroup`s in scope. This changeset changes all uses to
`dstate` so as not to be confused with actual TaskGroups.
The `nomad volume deregister` command currently returns an error if the volume
has any claims, but in cases where the claims can't be dropped because of
plugin errors, providing a `-force` flag gives the operator an escape hatch.
If the volume has no allocations or if they are all terminal, this flag
deletes the volume from the state store, immediately and implicitly dropping
all claims without further CSI RPCs. Note that this will not also
unmount/detach the volume, which we'll make the responsibility of a separate
`nomad volume detach` command.
* scheduler/reconcile: set FollowupEvalID on lost stop_after_client_disconnect
* scheduler/reconcile: thread follupEvalIDs through to results.stop
* scheduler/reconcile: comment typo
* nomad/_test: correct arguments for plan.AppendStoppedAlloc
* scheduler/reconcile: avoid nil, cleanup handleDelayed(Lost|Reschedules)
Handle case where a snapshot is made before cluster metadata is created.
This fixes a bug where a server may have empty cluster metadata if it
created and installed a Raft snapshot before a new cluster metadata ID is
generated.
This case is very unlikely to arise. Most likely reason is when
upgrading from an old version slowly where servers may use snapshots
before all servers upgrade. This happened for a user with a log line
like:
```
2020-05-21T15:21:56.996Z [ERROR] nomad.fsm: ClusterSetMetadata failed: error=""set cluster metadata failed: refusing to set new cluster id, previous: , new: <<redacted>
```
Allow a `/v1/jobs?all_namespaces=true` to list all jobs across all
namespaces. The returned list is to contain a `Namespace` field
indicating the job namespace.
If ACL is enabled, the request token needs to be a management token or
have `namespace:list-jobs` capability on all existing namespaces.
* jobspec, api: add stop_after_client_disconnect
* nomad/state/state_store: error message typo
* structs: alloc methods to support stop_after_client_disconnect
1. a global AllocStates to track status changes with timestamps. We
need this to track the time at which the alloc became lost
originally.
2. ShouldClientStop() and WaitClientStop() to actually do the math
* scheduler/reconcile_util: delayByStopAfterClientDisconnect
* scheduler/reconcile: use delayByStopAfterClientDisconnect
* scheduler/util: updateNonTerminalAllocsToLost comments
This was setup to only update allocs to lost if the DesiredStatus had
already been set by the scheduler. It seems like the intention was to
update the status from any non-terminal state, and not all lost allocs
have been marked stop or evict by now
* scheduler/testing: AssertEvalStatus just use require
* scheduler/generic_sched: don't create a blocked eval if delayed
* scheduler/generic_sched_test: several scheduling cases
This changeset implements a periodic garbage collection of unused CSI
plugins. Plugins are self-cleaning when the last allocation for a
plugin is stopped, but this feature will cover any missing edge cases
and ensure that upgrades from 0.11.0 and 0.11.1 get any stray plugins
cleaned up.
In this changeset:
* If a Nomad client node is running both a controller and a node
plugin (which is a common case), then if only the controller or the
node is removed, the plugin was not being updated with the correct
counts.
* The existing test for plugin cleanup didn't go back to the state
store, which normally is ok but is complicated in this case by
denormalization which changes the behavior. This commit makes the
test more comprehensive.
* Set "controller required" when plugin has `PUBLISH_READONLY`. All
known controllers that support `PUBLISH_READONLY` also support
`PUBLISH_UNPUBLISH_VOLUME` but we shouldn't assume this.
* Only create plugins when the allocs for those plugins are
healthy. If we allow a plugin to be created for the first time when
the alloc is not healthy, then we'll recreate deleted plugins when
the job's allocs all get marked terminal.
* Terminal plugin alloc updates should cleanup the plugin. The client
fingerprint can't tell if the plugin is unhealthy intentionally (for
the case of updates or job stop). Allocations that are
server-terminal should delete themselves from the plugin and trigger
a plugin self-GC, the same as an unused node.
We should only remove the `ReadAllocs`/`WriteAllocs` values for a
volume after the claim has entered the "ready to free"
state. The volume will eventually be released as expected. But
querying the volume API will show the volume is released before the
controller unpublish has finished and this can cause a race with
starting new jobs.
Test updates are to cover cases where we're dropping claims but not
running through the whole reaping process.
This changeset adds a subsystem to run on the leader, similar to the
deployment watcher or node drainer. The `Watcher` performs a blocking
query on updates to the `CSIVolumes` table and triggers reaping of
volume claims.
This will avoid tying up scheduling workers by immediately sending
volume claim workloads into their own loop, rather than blocking the
scheduling workers in the core GC job doing things like talking to CSI
controllers
The volume watcher is enabled on leader step-up and disabled on leader
step-down.
The volume claim GC mechanism now makes an empty claim RPC for the
volume to trigger an index bump. That in turn unblocks the blocking
query in the volume watcher so it can assess which claims can be
released for a volume.
The `CSIVolumeClaim` fields were added after 0.11.1, so claims made
before that may be missing the value. Repair this when we read the
volume out of the state store.
The `NodeID` field was added after 0.11.0, so we need to ensure it's
been populated during upgrades from 0.11.0.
Adds a `CSIVolumeClaim` type to be tracked as current and past claims
on a volume. Allows for a client RPC failure during node or controller
detachment without having to keep the allocation around after the
first garbage collection eval.
This changeset lays groundwork for moving the actual detachment RPCs
into a volume watching loop outside the GC eval.
* nomad/state/state_store: error message copy/paste error
* nomad/structs/structs: add a VolumeEval to the JobDeregisterResponse
* nomad/job_endpoint: synchronously, volumeClaimReap on job Deregister
* nomad/core_sched: make volumeClaimReap available without a CoreSched
* nomad/job_endpoint: Deregister return early if the job is missing
* nomad/job_endpoint_test: job Deregistion is idempotent
* nomad/core_sched: conditionally ignore alloc status in volumeClaimReap
* nomad/job_endpoint: volumeClaimReap all allocations, even running
* nomad/core_sched_test: extra argument to collectClaimsToGCImpl
* nomad/job_endpoint: job deregistration is not idempotent
* nomad/state/state_store: enforce that the volume namespace exists
* nomad/csi_endpoint_test: a couple of broken namespaces now
* nomad/csi_endpoint_test: one more test
* nomad/node_endpoint_test: use structs.DefaultNamespace
* nomad/state/state_store_test: use DefaultNamespace
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.
* 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.
Tim Gross