--- layout: api page_title: Allocations - HTTP API sidebar_title: Allocations description: The /allocation endpoints are used to query for and interact with allocations. --- # Allocations HTTP API The `/allocation` endpoints are used to query for and interact with allocations. ## List Allocations This endpoint lists all allocations. | Method | Path | Produces | | ------ | ----------------- | ------------------ | | `GET` | `/v1/allocations` | `application/json` | The table below shows this endpoint's support for [blocking queries](/api-docs#blocking-queries) and [required ACLs](/api-docs#acls). | Blocking Queries | ACL Required | | ---------------- | -------------------- | | `YES` | `namespace:read-job` | ### Parameters - `prefix` `(string: "")`- Specifies a string to filter allocations based on an ID prefix. Because the value is decoded to bytes, the prefix must have an even number of hexadecimal characters (0-9a-f). This is specified as a query string parameter. - `namespace` `(string: "default")` - Specifies the namespace to search. Specifying `*` would return all allocations across all the authorized namespaces. - `resources` `(bool: false)` - Specifies whether or not to include the `AllocatedResources` field in the response. - `task_states` `(bool: true)` - Specifies whether or not to include the `TaskStates` field in the response. TaskStates are included by default but can represent a large percentage of the overall response size. Clusters with a large number of allocations may set `task_states=false` to significantly reduce the size of the response. ### Sample Request ```shell-session $ curl \ https://localhost:4646/v1/allocations ``` ```shell-session $ curl \ https://localhost:4646/v1/allocations?prefix=a8198d79 ``` ```shell-session $ curl \ https://localhost:4646/v1/allocations?namespace=*&prefix=a8198d79 ``` ### Sample Response ```json [ { "ID": "a8198d79-cfdb-6593-a999-1e9adabcba2e", "EvalID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577", "Name": "example.cache[0]", "NodeID": "fb2170a8-257d-3c64-b14d-bc06cc94e34c", "PreviousAllocation": "516d2753-0513-cfc7-57ac-2d6fac18b9dc", "NextAllocation": "cd13d9b9-4f97-7184-c88b-7b451981616b", "RescheduleTracker": { "Events": [ { "PrevAllocID": "516d2753-0513-cfc7-57ac-2d6fac18b9dc", "PrevNodeID": "9230cd3b-3bda-9a3f-82f9-b2ea8dedb20e", "RescheduleTime": 1517434161192946200, "Delay": "5000000000" } ] }, "JobID": "example", "TaskGroup": "cache", "DesiredStatus": "run", "DesiredDescription": "", "ClientStatus": "running", "ClientDescription": "", "TaskStates": { "redis": { "State": "running", "FinishedAt": "0001-01-01T00:00:00Z", "LastRestart": "0001-01-01T00:00:00Z", "Restarts": 0, "StartedAt": "2017-07-25T23:36:26.106431265Z", "Failed": false, "Events": [ { "Type": "Received", "Time": 1495747371795703800, "FailsTask": false, "RestartReason": "", "SetupError": "", "DriverError": "", "ExitCode": 0, "Signal": 0, "Message": "", "KillTimeout": 0, "KillError": "", "KillReason": "", "StartDelay": 0, "DownloadError": "", "ValidationError": "", "DiskLimit": 0, "FailedSibling": "", "VaultError": "", "TaskSignalReason": "", "TaskSignal": "", "DriverMessage": "" }, { "Type": "Driver", "Time": 1495747371798867200, "FailsTask": false, "RestartReason": "", "SetupError": "", "DriverError": "", "ExitCode": 0, "Signal": 0, "Message": "", "KillTimeout": 0, "KillError": "", "KillReason": "", "StartDelay": 0, "DownloadError": "", "ValidationError": "", "DiskLimit": 0, "FailedSibling": "", "VaultError": "", "TaskSignalReason": "", "TaskSignal": "", "DriverMessage": "Downloading image redis:3.2" }, { "Type": "Started", "Time": 1495747379525667800, "FailsTask": false, "RestartReason": "", "SetupError": "", "DriverError": "", "ExitCode": 0, "Signal": 0, "Message": "", "KillTimeout": 0, "KillError": "", "KillReason": "", "StartDelay": 0, "DownloadError": "", "ValidationError": "", "DiskLimit": 0, "FailedSibling": "", "VaultError": "", "TaskSignalReason": "", "TaskSignal": "", "DriverMessage": "" } ] } }, "CreateIndex": 54, "ModifyIndex": 57, "CreateTime": 1495747371794276400, "ModifyTime": 1495747371794276400 } ] ``` ## Read Allocation This endpoint reads information about a specific allocation. | Method | Path | Produces | | ------ | -------------------------- | ------------------ | | `GET` | `/v1/allocation/:alloc_id` | `application/json` | The table below shows this endpoint's support for [blocking queries](/api-docs#blocking-queries) and [required ACLs](/api-docs#acls). | Blocking Queries | ACL Required | | ---------------- | -------------------- | | `YES` | `namespace:read-job` | ### Parameters - `:alloc_id` `(string: )`- Specifies the UUID of the allocation. This must be the full UUID, not the short 8-character one. This is specified as part of the path. ### Sample Request ```shell-session $ curl \ https://localhost:4646/v1/allocation/5456bd7a-9fc0-c0dd-6131-cbee77f57577 ``` ### Sample Response ```json { "ID": "a8198d79-cfdb-6593-a999-1e9adabcba2e", "EvalID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577", "Name": "example.cache[0]", "NodeID": "fb2170a8-257d-3c64-b14d-bc06cc94e34c", "PreviousAllocation": "516d2753-0513-cfc7-57ac-2d6fac18b9dc", "NextAllocation": "cd13d9b9-4f97-7184-c88b-7b451981616b", "RescheduleTracker": { "Events": [ { "PrevAllocID": "516d2753-0513-cfc7-57ac-2d6fac18b9dc", "PrevNodeID": "9230cd3b-3bda-9a3f-82f9-b2ea8dedb20e", "RescheduleTime": 1517434161192946200, "Delay": "5000000000" } ] }, "JobID": "example", "Job": { "Region": "global", "ID": "example", "ParentID": "", "Name": "example", "Type": "service", "Priority": 50, "AllAtOnce": false, "Datacenters": ["dc1"], "Constraints": null, "Affinities": null, "TaskGroups": [ { "Name": "cache", "Count": 1, "Constraints": null, "Affinities": null, "RestartPolicy": { "Attempts": 10, "Interval": 300000000000, "Delay": 25000000000, "Mode": "delay" }, "Spreads": null, "Tasks": [ { "Name": "redis", "Driver": "docker", "User": "", "Config": { "port_map": [ { "db": 6379 } ], "image": "redis:3.2" }, "Env": null, "Services": [ { "Name": "redis-cache", "PortLabel": "db", "Tags": ["global", "cache"], "Checks": [ { "Name": "alive", "Type": "tcp", "Command": "", "Args": null, "Path": "", "Protocol": "", "PortLabel": "", "Interval": 10000000000, "Timeout": 2000000000, "InitialStatus": "" } ] } ], "Vault": null, "Templates": null, "Constraints": null, "Affinities": null, "Resources": { "CPU": 500, "MemoryMB": 10, "DiskMB": 0, "Networks": [ { "Device": "", "CIDR": "", "IP": "", "MBits": 10, "ReservedPorts": null, "DynamicPorts": [ { "Label": "db", "Value": 0 } ] } ] }, "Spreads": null, "DispatchPayload": null, "Meta": null, "KillTimeout": 5000000000, "LogConfig": { "MaxFiles": 10, "MaxFileSizeMB": 10 }, "Artifacts": null, "Leader": false } ], "EphemeralDisk": { "Sticky": false, "SizeMB": 300, "Migrate": false }, "Meta": null } ], "Update": { "Stagger": 10000000000, "MaxParallel": 0 }, "Periodic": null, "ParameterizedJob": null, "Payload": null, "Spreads": null, "Meta": null, "VaultToken": "", "Status": "pending", "StatusDescription": "", "CreateIndex": 52, "ModifyIndex": 52, "JobModifyIndex": 52 }, "TaskGroup": "cache", "Resources": { "CPU": 500, "MemoryMB": 10, "DiskMB": 300, "Networks": [ { "Device": "lo0", "CIDR": "", "IP": "127.0.0.1", "MBits": 10, "ReservedPorts": null, "DynamicPorts": [ { "Label": "db", "Value": 23116 } ] } ] }, "SharedResources": { "CPU": 0, "MemoryMB": 0, "DiskMB": 300, "Networks": null }, "TaskResources": { "redis": { "CPU": 500, "MemoryMB": 10, "DiskMB": 0, "Networks": [ { "Device": "lo0", "CIDR": "", "IP": "127.0.0.1", "MBits": 10, "ReservedPorts": null, "DynamicPorts": [ { "Label": "db", "Value": 23116 } ] } ] } }, "Metrics": { "NodesEvaluated": 1, "NodesFiltered": 0, "NodesAvailable": { "dc1": 1 }, "ClassFiltered": null, "ConstraintFiltered": null, "NodesExhausted": 0, "ClassExhausted": null, "DimensionExhausted": null, "Scores": { "fb2170a8-257d-3c64-b14d-bc06cc94e34c.binpack": 0.6205732522109244 }, "AllocationTime": 31729, "CoalescedFailures": 0 }, "DesiredStatus": "run", "DesiredDescription": "", "ClientStatus": "running", "ClientDescription": "", "TaskStates": { "redis": { "State": "running", "Failed": false, "FinishedAt": "0001-01-01T00:00:00Z", "LastRestart": "0001-01-01T00:00:00Z", "Restarts": 0, "StartedAt": "2017-07-25T23:36:26.106431265Z", "Events": [ { "Type": "Received", "Time": 1495747371795703800, "FailsTask": false, "RestartReason": "", "SetupError": "", "DriverError": "", "ExitCode": 0, "Signal": 0, "Message": "", "KillTimeout": 0, "KillError": "", "KillReason": "", "StartDelay": 0, "DownloadError": "", "ValidationError": "", "DiskLimit": 0, "FailedSibling": "", "VaultError": "", "TaskSignalReason": "", "TaskSignal": "", "DriverMessage": "" }, { "Type": "Driver", "Time": 1495747371798867200, "FailsTask": false, "RestartReason": "", "SetupError": "", "DriverError": "", "ExitCode": 0, "Signal": 0, "Message": "", "KillTimeout": 0, "KillError": "", "KillReason": "", "StartDelay": 0, "DownloadError": "", "ValidationError": "", "DiskLimit": 0, "FailedSibling": "", "VaultError": "", "TaskSignalReason": "", "TaskSignal": "", "DriverMessage": "Downloading image redis:3.2" }, { "Type": "Started", "Time": 1495747379525667800, "FailsTask": false, "RestartReason": "", "SetupError": "", "DriverError": "", "ExitCode": 0, "Signal": 0, "Message": "", "KillTimeout": 0, "KillError": "", "KillReason": "", "StartDelay": 0, "DownloadError": "", "ValidationError": "", "DiskLimit": 0, "FailedSibling": "", "VaultError": "", "TaskSignalReason": "", "TaskSignal": "", "DriverMessage": "" } ] } }, "PreviousAllocation": "", "CreateIndex": 54, "ModifyIndex": 57, "AllocModifyIndex": 54, "CreateTime": 1495747371794276400, "ModifyTime": 1495747371794276400 } ``` #### Field Reference - `Job` - A copy of the job at the time that the allocation is created or updated. This is primarily intended for use by the Nomad client when running the allocation, and it may include stale information on some job fields. Up-to-date information about the job status is available from the [jobs API](/api-docs/jobs); take care to fetch the version of the job associated with this allocation. - `TaskStates` - A map of tasks to their current state and the latest events that have effected the state. `TaskState` objects contain the following fields: - `State`: The task's current state. It can have one of the following values: - `TaskStatePending` - The task is waiting to be run, either for the first time or due to a restart. - `TaskStateRunning` - The task is currently running. - `TaskStateDead` - The task is dead and will not run again. - `StartedAt`: The time the task was last started at. Can be updated through restarts. - `FinishedAt`: The time the task was finished at. - `LastRestart`: The last time the task was restarted. - `Restarts`: The number of times the task has restarted. - `Events` - An event contains metadata about the event. The latest 10 events are stored per task. Each event is timestamped (Unix nanoseconds) and has one of the following types: - `Setup Failure` - The task could not be started because there was a failure setting up the task prior to it running. - `Driver Failure` - The task could not be started due to a failure in the driver. - `Started` - The task was started; either for the first time or due to a restart. - `Terminated` - The task was started and exited. - `Killing` - The task has been sent the kill signal. - `Killed` - The task was killed by a user. - `Received` - The task has been pulled by the client at the given timestamp. - `Failed Validation` - The task was invalid and as such it didn't run. - `Restarting` - The task terminated and is being restarted. - `Not Restarting` - the task has failed and is not being restarted because it has exceeded its restart policy. - `Downloading Artifacts` - The task is downloading the artifact(s) - specified in the task. - `Failed Artifact Download` - Artifact(s) specified in the task failed to download. - `Restart Signaled` - The task was singled to be restarted. - `Signaling` - The task was is being sent a signal. - `Sibling Task Failed` - A task in the same task group failed. - `Leader Task Dead` - The group's leader task is dead. - `Driver` - A message from the driver. - `Task Setup` - Task setup messages. - `Building Task Directory` - Task is building its file system. Depending on the type the event will have applicable annotations. ## Stop Allocation This endpoint stops and reschedules a specific allocation. | Method | Path | Produces | | -------------- | ------------------------------- | ------------------ | | `POST` / `PUT` | `/v1/allocation/:alloc_id/stop` | `application/json` | The table below shows this endpoint's support for [blocking queries](/api-docs#blocking-queries) and [required ACLs](/api-docs#acls). | Blocking Queries | ACL Required | | ---------------- | --------------------------- | | `NO` | `namespace:alloc-lifecycle` | ### Parameters - `:alloc_id` `(string: )`- Specifies the UUID of the allocation. This must be the full UUID, not the short 8-character one. This is specified as part of the path. ### Sample Request ```shell-session $ curl -X POST \ https://localhost:4646/v1/allocation/5456bd7a-9fc0-c0dd-6131-cbee77f57577/stop ``` ### Sample Response ```json { "EvalID": "5456bd7a-9fc0-c0dd-6131-cbee77f57577", "Index": 54 } ``` ## Signal Allocation This endpoint sends a signal to an allocation or task. | Method | Path | Produces | | -------------- | ---------------------------------------- | ------------------ | | `POST` / `PUT` | `/v1/client/allocation/:alloc_id/signal` | `application/json` | The table below shows this endpoint's support for [blocking queries](/api-docs#blocking-queries) and [required ACLs](/api-docs#acls). | Blocking Queries | ACL Required | | ---------------- | --------------------------- | | `NO` | `namespace:alloc-lifecycle` | ### Parameters - `:alloc_id` `(string: )`- Specifies the UUID of the allocation. This must be the full UUID, not the short 8-character one. This is specified as part of the path. ### Sample Payload ```json { "Signal": "SIGUSR1", "Task": "FOO" } ``` ### Sample Request ```shell-session $ curl -X POST -d '{"Signal": "SIGUSR1" }' \ https://localhost:4646/v1/client/allocation/5456bd7a-9fc0-c0dd-6131-cbee77f57577/signal ``` ### Sample Response ```json {} ``` ## Restart Allocation This endpoint restarts an allocation or task in-place. | Method | Path | Produces | | -------------- | ----------------------------------------- | ------------------ | | `POST` / `PUT` | `/v1/client/allocation/:alloc_id/restart` | `application/json` | The table below shows this endpoint's support for [blocking queries](/api-docs#blocking-queries) and [required ACLs](/api-docs#acls). | Blocking Queries | ACL Required | | ---------------- | --------------------------- | | `NO` | `namespace:alloc-lifecycle` | ### Parameters - `:alloc_id` `(string: )`- Specifies the UUID of the allocation. This must be the full UUID, not the short 8-character one. This is specified as part of the path. ### Sample Payload ```json { "Task": "FOO" } ``` ### Sample Request ```shell-session $ curl -X POST -d '{"Task": "redis" }' \ https://localhost:4646/v1/client/allocation/5456bd7a-9fc0-c0dd-6131-cbee77f57577/restart ``` ### Sample Response ```json {} ```