## 0.5.0 (Unreleased)

IMPROVEMENTS:
  * core: Introduce node SecretID which can be used to minimize the available
    surface area of RPCs to malicious Nomad Clients [GH-1597] 
  * cli: `nomad alloc-status` shows allocation creation time [GH-1623]
  * client: Enforce shared allocation directory disk usage [GH-1580]

BUG FIXES:
  * client: Artifact download failures will be retried before failing tasks
    [GH-1558]
  * client/fingerprint: Fix inconsistent CPU MHz fingerprinting [GH-1366]
  * discovery: Fix HTTP timeout with Server HTTP health check when there is no
    leader [GH-1656]

## 0.4.1

__BACKWARDS INCOMPATIBILITIES:__
  * telemetry: Operators will have to explicitly opt-in for Nomad client to
    publish allocation and node metrics

IMPROVEMENTS:
  * core: Allow count 0 on system jobs [GH-1421]
  * core: Summarize the current status of registered jobs. [GH-1383, GH-1517]
  * core: Gracefully handle short lived outages by holding RPC calls [GH-1403]
  * core: Introduce a lost state for allocations that were on Nodes that died
    [GH-1516]
  * api: client Logs endpoint for streaming task logs [GH-1444]
  * api/cli: Support for tailing/streaming files [GH-1404, GH-1420]
  * api/server: Support for querying job summaries [GH-1455]
  * cli: `nomad logs` command for streaming task logs [GH-1444]
  * cli: `nomad status` shows the create time of allocations [GH-1540]
  * cli: `nomad plan` exit code indicates if changes will occur [GH-1502]
  * cli: status commands support JSON output and go template formating [GH-1503]
  * cli: Validate and plan command supports reading from stdin [GH-1460,
    GH-1458]
  * cli: Allow basic authentication through address and environment variable
    [GH-1610]
  * cli: `nomad node-status` shows volume name for non-physical volumes instead
    of showing 0B used [GH-1538]
  * cli: Support retrieving job files using go-getter in the `run`, `plan` and
    `validate` command [GH-1511]
  * client: Add killing event to task state [GH-1457]
  * client: Fingerprint network speed on Windows [GH-1443]
  * discovery: Support for initial check status [GH-1599]
  * discovery: Support for query params in health check urls [GH-1562]
  * driver/docker: Allow working directory to be configured [GH-1513]
  * driver/docker: Remove docker volumes when removing container [GH-1519]
  * driver/docker: Set windows containers network mode to nat by default
    [GH-1521]
  * driver/exec: Allow chroot environment to be configurable [GH-1518]
  * driver/qemu: Allows users to pass extra args to the qemu driver [GH-1596]
  * telemetry: Circonus integration for telemetry metrics [GH-1459]
  * telemetry: Allow operators to opt-in for publishing metrics [GH-1501]

BUG FIXES:
  * agent: Reload agent configuration on SIGHUP [GH-1566]
  * core: Sanitize empty slices/maps in jobs to avoid incorrect create/destroy
    updates [GH-1434]
  * core: Fix race in which a Node registers and doesn't receive system jobs
    [GH-1456]
  * core: Fix issue in which Nodes with large amount of reserved ports would
    casue dynamic port allocations to fail [GH-1526]
  * core: Fix a condition in which old batch allocations could get updated even
    after terminal. In a rare case this could cause a server panic [GH-1471]
  * core: Do not update the Job attached to Allocations that have been marked
    terminal [GH-1508]
  * agent: Fix advertise address when using IPv6 [GH-1465]
  * cli: Fix node-status when using IPv6 advertise address [GH-1465]
  * client: Merging telemetry configuration properly [GH-1670]
  * client: Task start errors adhere to restart policy mode [GH-1405]
  * client: Reregister with servers if node is unregistered [GH-1593]
  * client: Killing an allocation doesn't cause allocation stats to block
    [GH-1454]
  * driver/docker: Disable swap on docker driver [GH-1480]
  * driver/docker: Fix improper gating on priviledged mode [GH-1506]
  * driver/docker: Default network type is "nat" on Windows [GH-1521]
  * driver/docker: Cleanup created volume when destroying container [GH-1519]
  * driver/rkt: Set host environment variables [GH-1581]
  * driver/rkt: Validate the command and trust_prefix configs [GH-1493]
  * plan: Plan on system jobs discounts nodes that do not meet required
    constraints [GH-1568]

## 0.4.0

__BACKWARDS INCOMPATIBILITIES:__
  * api: Tasks are no longer allowed to have slashes in their name [GH-1210]
  * cli: Remove the eval-monitor command. Users should switch to `nomad
    eval-status -monitor`.
  * config: Consul configuration has been moved from client options map to
    consul block under client configuration
  * driver/docker: Enabled SSL by default for pulling images from docker
    registries. [GH-1336]

IMPROVEMENTS:
  * core: Scheduler reuses blocked evaluations to avoid unbounded creation of
    evaluations under high contention [GH-1199]
  * core: Scheduler stores placement failures in evaluations, no longer
    generating failed allocations for debug information [GH-1188]
  * api: Faster JSON response encoding [GH-1182]
  * api: Gzip compress HTTP API requests [GH-1203]
  * api: Plan api introduced for the Job endpoint [GH-1168]
  * api: Job endpoint can enforce Job Modify Index to ensure job is being
    modified from a known state [GH-1243]
  * api/client: Add resource usage APIs for retrieving tasks/allocations/host
    resource usage [GH-1189]
  * cli: Faster when displaying large amounts ouptuts [GH-1362]
  * cli: Deprecate `eval-monitor` and introduce `eval-status` [GH-1206]
  * cli: Unify the `fs` family of commands to be a single command [GH-1150]
  * cli: Introduce `nomad plan` to dry-run a job through the scheduler and
    determine its effects [GH-1181]
  * cli: node-status command displays host resource usage and allocation
    resources [GH-1261]
  * cli: Region flag and environment variable introduced to set region
    forwarding. Automatic region forwarding for run and plan [GH-1237]
  * client: If Consul is available, automatically bootstrap Nomad Client
    using the `_nomad` service in Consul. Nomad Servers now register
    themselves with Consul to make this possible. [GH-1201]
  * drivers: Qemu and Java can be run without an artifact being download. Useful
    if the artifact exists inside a chrooted directory [GH-1262]
  * driver/docker: Added a client options to set SELinux labels for container
    bind mounts. [GH-788]
  * driver/docker: Enabled SSL by default for pulling images from docker
    registries. [GH-1336]
  * server: If Consul is available, automatically bootstrap Nomad Servers
    using the `_nomad` service in Consul.  [GH-1276]

BUG FIXES:
  * core: Improve garbage collection of allocations and nodes [GH-1256]
  * core: Fix a potential deadlock if establishing leadership fails and is
    retried [GH-1231]
  * core: Do not restart successful batch jobs when the node is removed/drained
    [GH-1205]
  * core: Fix an issue in which the scheduler could be invoked with insufficient
    state [GH-1339]
  * core: Updated User, Meta or Resources in a task cause create/destroy updates
    [GH-1128, GH-1153]
  * core: Fix blocked evaluations being run without properly accounting for
    priority [GH-1183]
  * api: Tasks are no longer allowed to have slashes in their name [GH-1210]
  * client: Delete tmp files used to communicate with execcutor [GH-1241]
  * client: Prevent the client from restoring with incorrect task state [GH-1294]
  * discovery: Ensure service and check names are unique [GH-1143, GH-1144]
  * driver/docker: Ensure docker client doesn't time out after a minute.
    [GH-1184]
  * driver/java: Fix issue in which Java on darwin attempted to chroot [GH-1262]
  * driver/docker: Fix issue in which logs could be spliced [GH-1322]

## 0.3.2 (April 22, 2016)

IMPROVEMENTS:
  * core: Garbage collection partitioned to avoid system delays [GH-1012]
  * core: Allow count zero task groups to enable blue/green deploys [GH-931]
  * core: Validate driver configurations when submitting jobs [GH-1062, GH-1089]
  * core: Job Deregister forces an evaluation for the job even if it doesn't
    exist [GH-981]
  * core: Rename successfully finished allocations to "Complete" rather than
    "Dead" for clarity [GH-975]
  * cli: `alloc-status` explains restart decisions [GH-984]
  * cli: `node-drain -self` drains the local node [GH-1068]
  * cli: `node-status -self` queries the local node [GH-1004]
  * cli: Destructive commands now require confirmation [GH-983]
  * cli: `alloc-status` display is less verbose by default [GH-946]
  * cli: `server-members` displays the current leader in each region [GH-935]
  * cli: `run` has an `-output` flag to emit a JSON version of the job [GH-990]
  * cli: New `inspect` command to display a submitted job's specification
    [GH-952]
  * cli: `node-status` display is less verbose by default and shows a node's
    total resources [GH-946]
  * client: `artifact` source can be interpreted [GH-1070]
  * client: Add IP and Port environment variables [GH-1099]
  * client: Nomad fingerprinter to detect client's version [GH-965]
  * client: Tasks can interpret Meta set in the task group and job [GH-985]
  * client: All tasks in a task group are killed when a task fails [GH-962]
  * client: Pass environment variables from host to exec based tasks [GH-970]
  * client: Allow task's to be run as particular user [GH-950, GH-978]
  * client: `artifact` block now supports downloading paths relative to the
    task's directory [GH-944]
  * docker: Timeout communications with Docker Daemon to avoid deadlocks with
    misbehaving Docker Daemon [GH-1117]
  * discovery: Support script based health checks [GH-986]
  * discovery: Allowing registration of services which don't expose ports
    [GH-1092]
  * driver/docker: Support for `tty` and `interactive` options [GH-1059]
  * jobspec: Improved validation of services referencing port labels [GH-1097]
  * periodic: Periodic jobs are always evaluated in UTC timezone [GH-1074]

BUG FIXES:
  * core: Prevent garbage collection of running batch jobs [GH-989]
  * core: Trigger System scheduler when Node drain is disabled [GH-1106]
  * core: Fix issue where in-place updated allocation double counted resources
    [GH-957]
  * core: Fix drained, batched allocations from being migrated indefinitely
    [GH-1086]
  * client: Garbage collect Docker containers on exit [GH-1071]
  * client: Fix common exec failures on CentOS and Amazon Linux [GH-1009]
  * client: Fix S3 artifact downloading with IAM credentials [GH-1113]
  * client: Fix handling of environment variables containing multiple equal
    signs [GH-1115]

## 0.3.1 (March 16, 2016)

__BACKWARDS INCOMPATIBILITIES:__
  * Service names that dont conform to RFC-1123 and RFC-2782 will fail
    validation. To fix, change service name to conform to the RFCs before
    running the job [GH-915]
  * Jobs that downloaded artifacts will have to be updated to the new syntax and
    be resubmitted. The new syntax consolidates artifacts to the `task` rather
    than being duplicated inside each driver config [GH-921]

IMPROVEMENTS:
  * cli: Validate job file schemas [GH-900]
  * client: Add environment variables for task name, allocation ID/Name/Index
    [GH-869, GH-896]
  * client: Starting task is retried under the restart policy if the error is
    recoverable [GH-859]
  * client: Allow tasks to download artifacts, which can be archives, prior to
    starting [GH-921]
  * config: Validate Nomad configuration files [GH-910]
  * config: Client config allows reserving resources [GH-910]
  * driver/docker: Support for ECR [GH-858]
  * driver/docker: Periodic Fingerprinting [GH-893]
  * driver/docker: Preventing port reservation for log collection on Unix platforms [GH-897]
  * driver/rkt: Pass DNS information to rkt driver [GH-892]
  * jobspec: Require RFC-1123 and RFC-2782 valid service names [GH-915]

BUG FIXES:
  * core: No longer cancel evaluations that are delayed in the plan queue
    [GH-884]
  * api: Guard client/fs/ APIs from being accessed on a non-client node [GH-890]
  * client: Allow dashes in variable names during interprelation [GH-857]
  * client: Updating kill timeout adheres to operator specified maximum value [GH-878]
  * client: Fix a case in which clients would pull but not run allocations
    [GH-906]
  * consul: Remove concurrent map access [GH-874]
  * driver/exec: Stopping tasks with more than one pid in a cgroup [GH-855]
  * executor/linux: Add /run/resolvconf/ to chroot so DNS works [GH-905]

## 0.3.0 (February 25, 2016)

__BACKWARDS INCOMPATIBILITIES:__
  * Stdout and Stderr log files of tasks have moved from task/local to
    alloc/logs [GH-851]
  * Any users of the runtime environment variable `$NOMAD_PORT_` will need to
    update to the new `${NOMAD_ADDR_}` varriable [GH-704]
  * Service names that include periods will fail validation. To fix, remove any
    periods from the service name before running the job [GH-770]
  * Task resources are now validated and enforce minimum resources. If a job
    specifies resources below the minimum they will need to be updated [GH-739]
  * Node ID is no longer specifiable. For users who have set a custom Node
    ID, the node should be drained before Nomad is updated and the data_dir
    should be deleted before starting for the first time [GH-675]
  * Users of custom restart policies should update to the new syntax which adds
    a `mode` field. The `mode` can be either `fail` or `delay`. The default for
    `batch` and `service` jobs is `fail` and `delay` respectively [GH-594]
  * All jobs that interpret variables in constraints or driver configurations
    will need to be updated to the new syntax which wraps the interpreted
    variable in curly braces. (`$node.class` becomes `${node.class}`) [GH-760]

IMPROVEMENTS:
  * core: Populate job status [GH-663]
  * core: Cgroup fingerprinter [GH-712]
  * core: Node class constraint [GH-618]
  * core: User specifiable kill timeout [GH-624]
  * core: Job queueing via blocked evaluations  [GH-726]
  * core: Only reschedule failed batch allocations [GH-746]
  * core: Add available nodes by DC to AllocMetrics [GH-619]
  * core: Improve scheduler retry logic under contention [GH-787]
  * core: Computed node class and stack optimization [GH-691, GH-708]
  * core: Improved restart policy with more user configuration [GH-594]
  * core: Periodic specification for jobs [GH-540, GH-657, GH-659, GH-668]
  * core: Batch jobs are garbage collected from the Nomad Servers [GH-586]
  * core: Free half the CPUs on leader node for use in plan queue and evaluation
    broker [GH-812]
  * core: Seed random number generator used to randomize node traversal order
    during scheduling [GH-808]
  * core: Performance improvements [GH-823, GH-825, GH-827, GH-830, GH-832,
    GH-833, GH-834, GH-839]
  * core/api: System garbage collection endpoint [GH-828]
  * core/api: Allow users to set arbitrary headers via agent config [GH-699]
  * core/cli: Prefix based lookups of allocs/nodes/evals/jobs [GH-575]
  * core/cli: Print short identifiers and UX cleanup [GH-675, GH-693, GH-692]
  * core/client: Client pulls minimum set of required allocations [GH-731]
  * cli: Output of agent-info is sorted [GH-617]
  * cli: Eval monitor detects zero wait condition [GH-776]
  * cli: Ability to navigate allocation directories [GH-709, GH-798]
  * client: Batch allocation updates to the server [GH-835]
  * client: Log rotation for all drivers [GH-685, GH-763, GH-819]
  * client: Only download artifacts from http, https, and S3 [GH-841]
  * client: Create a tmp/ directory inside each task directory [GH-757]
  * client: Store when an allocation was received by the client [GH-821]
  * client: Heartbeating and saving state resilient under high load [GH-811]
  * client: Handle updates to tasks Restart Policy and KillTimeout [GH-751]
  * client: Killing a driver handle is retried with an exponential backoff
    [GH-809]
  * client: Send Node to server when periodic fingerprinters change Node
    attributes/metadata [GH-749]
  * client/api: File-system access to allocation directories [GH-669]
  * drivers: Validate the "command" field contains a single value [GH-842]
  * drivers: Interpret Nomad variables in environment variables/args [GH-653]
  * driver/rkt: Add support for CPU/Memory isolation [GH-610]
  * driver/rkt: Add support for mounting alloc/task directory [GH-645]
  * driver/docker: Support for .dockercfg based auth for private registries
    [GH-773]

BUG FIXES:
  * core: Node drain could only be partially applied [GH-750]
  * core: Fix panic when eval Ack occurs at delivery limit [GH-790]
  * cli: Handle parsing of un-named ports [GH-604]
  * cli: Enforce absolute paths for data directories [GH-622]
  * client: Cleanup of the allocation directory [GH-755]
  * client: Improved stability under high contention [GH-789]
  * client: Handle non-200 codes when parsing AWS metadata [GH-614]
  * client: Unmounted of shared alloc dir when client is rebooted [GH-755]
  * client/consul: Service name changes handled properly [GH-766]
  * driver/rkt: handle broader format of rkt version outputs [GH-745]
  * driver/qemu: failed to load image and kvm accelerator fixes [GH-656]

## 0.2.3 (December 17, 2015)

BUG FIXES:
  * core: Task States not being properly updated [GH-600]
  * client: Fixes for user lookup to support CoreOS [GH-591]
  * discovery: Using a random prefix for nomad managed services [GH-579]
  * discovery: De-Registering Tasks while Nomad sleeps before failed tasks are
    restarted.
  * discovery: Fixes for service registration when multiple allocations are bin
    packed on a node [GH-583]
  * configuration: Sort configuration files [GH-588]
  * cli: RetryInterval was not being applied properly [GH-601]

## 0.2.2 (December 11, 2015)

IMPROVEMENTS:
  * core: Enable `raw_exec` driver in dev mode [GH-558]
  * cli: Server join/retry-join command line and config options [GH-527]
  * cli: Nomad reports which config files are loaded at start time, or if none
    are loaded [GH-536], [GH-553]

BUG FIXES:
  * core: Send syslog to `LOCAL0` by default as previously documented [GH-547]
  * client: remove all calls to default logger [GH-570]
  * consul: Nomad is less noisy when Consul is not running [GH-567]
  * consul: Nomad only deregisters services that it created [GH-568]
  * driver/exec: Shutdown a task now sends the interrupt signal first to the
    process before forcefully killing it. [GH-543]
  * driver/docker: Docker driver no longer leaks unix domain socket connections
    [GH-556]
  * fingerprint/network: Now correctly detects interfaces on Windows [GH-382]

## 0.2.1 (November 28, 2015)

IMPROVEMENTS:

  * core: Can specify a whitelist for activating drivers [GH-467]
  * core: Can specify a whitelist for activating fingerprinters [GH-488]
  * core/api: Can list all known regions in the cluster [GH-495]
  * client/spawn: spawn package tests made portable (work on Windows) [GH-442]
  * client/executor: executor package tests made portable (work on Windows) [GH-497]
  * client/driver: driver package tests made portable (work on windows) [GH-502]
  * client/discovery: Added more consul client api configuration options [GH-503]
  * driver/docker: Added TLS client options to the config file [GH-480]
  * jobspec: More flexibility in naming Services [GH-509]

BUG FIXES:

  * core: Shared reference to DynamicPorts caused port conflicts when scheduling
    count > 1 [GH-494]
  * client/restart policy: Not restarting Batch Jobs if the exit code is 0 [GH-491]
  * client/service discovery: Make Service IDs unique [GH-479]
  * client/service: Fixes update to check definitions and services which are already registered [GH-498]
  * driver/docker: Expose the container port instead of the host port [GH-466]
  * driver/docker: Support `port_map` for static ports [GH-476]
  * driver/docker: Pass 0.2.0-style port environment variables to the docker container [GH-476]
  * jobspec: distinct_hosts constraint can be specified as a boolean (previously panicked) [GH-501]

## 0.2.0 (November 18, 2015)

__BACKWARDS INCOMPATIBILITIES:__

  * core: HTTP API `/v1/node/<id>/allocations` returns full Allocation and not
    stub [GH-402]
  * core: Removed weight and hard/soft fields in constraints [GH-351]
  * drivers: Qemu and Java driver configurations have been updated to both use
    `artifact_source` as the source for external images/jars to be ran
  * jobspec: New reserved and dynamic port specification [GH-415]
  * jobspec/drivers: Driver configuration supports arbitrary struct to be
    passed in jobspec [GH-415]

FEATURES:

  * core: Blocking queries supported in API [GH-366]
  * core: System Scheduler that runs tasks on every node [GH-287]
  * core: Regexp, version and lexical ordering constraints [GH-271]
  * core: distinctHost constraint ensures Task Groups are running on distinct
    clients [GH-321]
  * core: Service block definition with Consul registration [GH-463, GH-460,
    GH-458, GH-455, GH-446, GH-425]
  * client: GCE Fingerprinting [GH-215]
  * client: Restart policy for task groups enforced by the client [GH-369,
    GH-393]
  * driver/rawexec: Raw Fork/Exec Driver [GH-237]
  * driver/rkt: Experimental Rkt Driver [GH-165, GH-247]
  * drivers: Add support for downloading external artifacts to execute for
    Exec, Raw exec drivers [GH-381]

IMPROVEMENTS:

  * core: Configurable Node GC threshold [GH-362]
  * core: Overlap plan verification and plan application for increased
    throughput [GH-272]
  * cli: Output of `alloc-status` also displays task state [GH-424]
  * cli: Output of `server-members` is sorted [GH-323]
  * cli: Show node attributes in `node-status` [GH-313]
  * client/fingerprint: Network fingerprinter detects interface suitable for
    use, rather than defaulting to eth0 [GH-334, GH-356]
  * client: Client Restore State properly reattaches to tasks and recreates
    them as needed [GH-364, GH-380, GH-388, GH-392, GH-394, GH-397, GH-408]
  * client: Periodic Fingerprinting [GH-391]
  * client: Precise snapshotting of TaskRunner and AllocRunner [GH-403, GH-411]
  * client: Task State is tracked by client [GH-416]
  * client: Test Skip Detection [GH-221]
  * driver/docker: Can now specify auth for docker pull [GH-390]
  * driver/docker: Can now specify DNS and DNSSearch options [GH-390]
  * driver/docker: Can now specify the container's hostname [GH-426]
  * driver/docker: Containers now have names based on the task name. [GH-389]
  * driver/docker: Mount task local and alloc directory to docker containers [GH-290]
  * driver/docker: Now accepts any value for `network_mode` to support userspace networking plugins in docker 1.9
  * driver/java: Pass JVM options in java driver [GH-293, GH-297]
  * drivers: Use BlkioWeight rather than BlkioThrottleReadIopsDevice [GH-222]
  * jobspec and drivers: Driver configuration supports arbitrary struct to be passed in jobspec [GH-415]

BUG FIXES:

  * core: Nomad Client/Server RPC codec encodes strings properly [GH-420]
  * core: Reset Nack timer in response to scheduler operations [GH-325]
  * core: Scheduler checks for updates to environment variables [GH-327]
  * cli: Fix crash when -config was given a directory or empty path [GH-119]
  * client/fingerprint: Use correct local interface on OS X [GH-361, GH-365]
  * client: Nomad Client doesn't restart failed containers [GH-198]
  * client: Reap spawn-daemon process, avoiding a zombie process [GH-240]
  * client: Resource exhausted errors because of link-speed zero [GH-146,
    GH-205]
  * client: Restarting Nomad Client leads to orphaned containers [GH-159]
  * driver/docker: Apply SELinux label for mounting directories in docker
    [GH-377]
  * driver/docker: Docker driver exposes ports when creating container [GH-212,
    GH-412]
  * driver/docker: Docker driver uses docker environment variables correctly
    [GH-407]
  * driver/qemu: Qemu fingerprint and tests work on both windows/linux [GH-352]

## 0.1.2 (October 6, 2015)

IMPROVEMENTS:

  * client: Nomad client cleans allocations on exit when in dev mode [GH-214]
  * drivers: Use go-getter for artifact retrieval, add artifact support to
    Exec, Raw Exec drivers [GH-288]

## 0.1.1 (October 5, 2015)

IMPROVEMENTS:

  * cli: Nomad Client configurable from command-line [GH-191]
  * client/fingerprint: Native IP detection and user specifiable network
    interface for fingerprinting [GH-189]
  * driver/docker: Docker networking mode is configurable [GH-184]
  * drivers: Set task environment variables [GH-206]

BUG FIXES:

  * client/fingerprint: Network fingerprinting failed if default network
    interface did not exist [GH-189]
  * client: Fixed issue where network resources throughput would be set to 0
    MBits if the link speed could not be determined [GH-205]
  * client: Improved detection of Nomad binary [GH-181]
  * driver/docker: Docker dynamic port mapping were not being set properly
    [GH-199]

## 0.1.0 (September 28, 2015)

  * Initial release