--- title: Docker Swarm (standalone) release notes description: Release notes for Docker Swarm (standalone) keywords: release notes, swarm toc_max: 2 --- ## 1.2.6 (2017-01-17) ### API - Add options to refresh engine container cache on filters - Support name filter in volume list - Support more filters in network list operations - Support node whitelist filter - Switch from engine-api to docker/api/type and docker/clients - Pass size parameter through on container inspect ### Scheduler - For container network disconnect requests, tryworker engine with the container first - Precompile filter regular expression to reduce PU usage - Remove setTCPUserTimeout to avoid TCP connection leak - Fix network endpoints for rescheduling - Give up leadership when manager shuts down ### Cluster management - Remove dependency on IPv4 addresses - Support event top, resize, commit and so on to avoid unnecessary refreshing - Sequentialize event monitor to an engine to avoid data race - When an active engine sends EOF on event stream, restart event monitor so we don't lose events - When proxying a request, cancel request if user connection is broken ### MISC - Update go-zookeeper to fix a lock spin problem - Migrate documentation to https://github.com/docker/docker.github.io/tree/master/swarm - Update Swarm CI to use go 1.7.1 - Support GOARCH to be able to build for other architectures - Send Swarm logs to stdout ## 1.2.5 (2016-08-18) ### Scheduler - Fix container rescheduling with overlay network - Fix scheduler detail log improper effect when container name is empty - Check unique container name on create and rename for Mesos cluster ### Health check - Refresh container status on health_status events ### Doc - Fix install-w-machine.md using docker-machine --swarm feature ## 1.2.4 (2016-07-28) ### API - New client interface in Swarm, to differentiate from Swarm mode in Docker 1.12 - Underlying HTTP client for API is created inside Swarm - Update minimum Docker Engine version supported by Swarm to 1.8 - Additional error handling - Code refactoring ### Networking - Fix concurrent map writes race condition - Refresh single network when network event is emitted (performance improvement) - Avoid network refresh when creating container (performance improvement) ### Volumes - Refresh single volume when volume event is emitted (performance improvement) - Avoid volume refresh when creating container (performance improvement) ### Events - Support daemon events for Swarm ### Test - Fix leader election tests - Fix rescheduling test ### Mesos - Fix double locking issue ### Misc - Handle systime difference between Swarm and Engines - Add healthcheck information to CLI - Fix `engine_reconnect` issue that led to reconnected engine being treated as new ## 1.2.3 (2016-05-25) ### API - Update `engine-api` vendoring (supports new functions and signatures) - Fix registry auth bug for image pulls ## 1.2.2 (2016-05-05) ### Cluster management - Fix deadlock that causes Swarm to hang ## 1.2.1 (2016-05-03) ### Scheduler - Add containerslots filter to allow user to limit container number on a node ### API - Use engine-api to handle large number of API calls - Update ContainerConfig to embed HostConfig and NetworkingConfig - stop/restart/kill a non-existent container should return 500 rather than 404 - Return an error when assertion fails in hijack - Return an error when Image Pull fails - Fix image pull bug (wait until download finishes) - Fix and document some api response status codes - Add NodeID in docker info - Support docker ps --filter by volume ### Build - Move dependencies to vendor/ - Update Image Pull to use docker/distribution package - Convert docs Dockerfiles to use docs/base:oss ### Test - Fix api/ps tests - Update api/stats test to prevent timeout on master branch - Use --cpu-shares instead of -c in integration test ### Misc - Documentation clean up - Close http response body to avoid potential memory leak - Switch context.TODO() to context.Background() to enable context setting ## 1.2.0 (2016-04-13) ### Scheduler - Move rescheduling out of experimental - Differentiate constraint errors from affinity errors - Printing unsatisfiable constraints for container scheduling failure - Enable rescheduling on master manager to prevent replica managers from rescheduling containers - Output error when starting a rescheduled container fails, and when removing container fails at node recovery - Validate cluster swarm.overcommit option ### API - Introduce engine-api client to Swarm - Implement 'info' and 'version' with engine-api - Use apiClient for some volume, network, image operations - Print engine version in Info - Fix swarm api response status code - Support ps node filter - Fix HostConfig for /start endpoint - Print container 'created' state at ps - Update dockerclient to get labels on volumes, networks, images - Support private images, labels and other new flags in docker build - Select apiClient version according to node docker version ### Node management - Prevent crash on channel double close - Manager retries EventMonitoring on failure. - Docker engine updates hostname/domainname - Force inspect for containers in Restarting state. - Increase max thread count to 50k to accommodate large cluster or heavy workload - Force to validate min and max refresh interval to be positive - Skip unstable tests from Docker bug 14203 - Fix race condition between node removal from discovery and scheduler - Fix data race with node failureCount - Display warning message if an engine has labels with "node=xxx" ### Discovery - Remove parameter which is not used in createDiscovery - Fix Consul leader election failure on multi-server ### Mesos integration - Support rescind offer in swarm - Update mesos tests ### Misc - Update golang version to 1.5.4 - Skip redundant endpoints in "network inspect" - Validate duration flags:--delay, --timeout, --replication-ttl - Fix image matching via id - Make port 0 invalid as listening port - Improve volume inspect test - Add read lock for eventsHandler when only it is necessary ## 1.1.3 (2016-03-03) - Fix missing HostConfig for rescheduled containers - Fix TCP connections leak - Support `docker run --net / ...` - Fix CORS issue in the API ## 1.1.2 (2016-02-18) - Fix regression with Docker Compose ## 1.1.1 (2016-02-17) - Performance improvements around networking with Docker engine 1.10 - Fix reschedule issue regarding events - Implement engine refresh backoff strategy for failing nodes ## 1.1.0 (2016-02-04) ### Scheduler - Add support for container rescheduling on node failure. (experimental) - Use failureCount as a secondary health indicator - Add swarm container create retry option - Fix the way soft affinities and handled ### API - Support private registry on docker run - Expose error and last update time in docker info - Sort images by Created - Fix error when inspect on unhealthy node - Prevent panic in filters when container has no name - Add buildtime, kernelversion and experimental to API version - Support docker update and new networking related flags in run & network create/connect/disconnect/ls - Require `--all` on docker ps to display containers on unhealthy nodes - Retry on docker events EOF ### Node management - Add a random delay to avoid synchronized registration at swarm join - Use engine connection error to fail engine fast - Introduce pending state ### Mesos integration - Rename slave to agent - Upgrade tests to use mesos 0.25 - Code refactors - Improve debug output - Enable checkpoint failover in FrameworkInfo - Fix timeout when pulling images - Add timeout to refuse offers - Fix double start issue ### Misc - Fix license grant - Documentation update - Use discovery from docker/docker ## 1.0.1 (2015-12-09) ### Scheduler - Set labels for pending containers to fix scheduler failure ### Discovery - Increase default TTL and heartbeat values to reduce traffic to discovery ### API - Fix 'ps -a' panic issue - Fix network connect/disconnect for overlay network - Fix connection leak on TLS connections - Fix CLI hang on events command - Fix newline issue with events - Improve OPTIONS handler - Fix image digest - Fix memoryswappiness default value - Enable profiling for HTTP in debug mode ### Node update - Provide options on swarm node update frequency ### Mesos integration - Change offers timeout default to prevent other frameworks starvation - Improve error output for bad swarm mesos user - Fix connection failure when using Mesos with ZooKeeper ### Misc - Update to Go 1.5.2 - Documentation update ## 1.0 (2015-10-13) ### Scheduler - Swarm is now pulling Images in parallel after the scheduling decision has been made, which mitigates the error happening occasionally with Docker pulls blocking the entire scheduler. ### General stability - The Node refresh loop process has been improved and does not yield to a panic when removing an Engine and trying to refresh the state at the same time. - The refresh loop has been randomized to better handle huge scale scenarios (> 1000 nodes) where a *refresh burst* could occur and make the Manager unstable/fail. - General improvements and fixes for the Mesos experimental backend for swarm. ### Integration with libnetwork / Support for overlay networking - It is now possible to use the new networking features with Swarm through the `network` sub-system. Commands like `docker network create`, `docker network attach` and `docker network ls` are now available through swarm. ### Integration with Docker Volume Plugins - You can now use the docker volume plugin subsystem available with `docker volume`. ### Leader election - You can now specify the `--replication-ttl` flag to control how long it takes for Replicas to be notified of the Primary failure and take over the lead. ### TLS - This is now possible to use TLS with discovery for `consul` and `etcd` using the new `--discovery-opt` flag. ## 0.4 (2015-08-04) ### Scheduler - Reschedule with soft affinity when image cannot be pulled ### Store - Replace the store pkg by libKV - Fixes about consul/etcd and zookeeper ### API - Fix docker push name matching - Fix docker exec status code - Fix docker pull status code ### Docker Engine compatibility - Improve docker info with docker client 1.7.x - Add SystemTime, http_proxy, https_proxy, and no_proxy to docker info ### Mesos integration - Task creation timeout configurable - Fix issue with hostname in library image - Use 'docker_port' attribute if available - Add support for random ports ### Misc - Add doc on leader election / high availability of swarm manager - Lots of typos/improvements to the doc - Switch to golang 1.4