v0.1.0 (2020-06-06) - Stabilization

Docker: docker pull thobe/sokar:v0.1.0

• BugFixes:
  • #122 Fix Codesmells found by SonarCloud
  • #129 Fix metrics Setup
  • #136 Race Conditions Detected during Test
  • #131 Reenable + Fix Service Test
• With #52 the log-level is now configurable (debug, info, warn, error, fatal or off).
• Docu: With #56 API spec was added.
• Docu: With #69 sokars scaler modes were documented at doc/ScalerModes.md.
• With #105 sokars dependencies are now managed using go modules instead of go dep.
• With #116 sokars implementation for configuration, logging, build-information, health and shutdown where replaced by the usage of go-base.
• With #117 an integration test was added running sokar against a real nomad job running on a nomad (in docker) cluster. Here basic functionality of sokar is tested (scale up and down based on scale alerts).
• With #118 sokars is now build and its code is analyzed with sonar-cloud instead of using coveralls, codacity and circle-ci.
• With #119 golangci-lint is used for an additional static code analysis. GolangCI-Lint is a collection of multiple linters for golang with good default settings.
• With #125 for all unit-tests race detection is now activated.
• With #132 support for the newest nomad version (0.11.2) was added.

v0.0.12 (2019-12-31)

Docker: docker pull thobe/sokar:v0.0.12

Capacity Planning: With #110 the new feature Scheduled Scaling was added to sokar. For more details read ScheduledScaling.md.

v0.0.11 (2019-11-03)

Docker: docker pull thobe/sokar:v0.0.11

• BugFixes:
  • #106 Downscaling of AWS instances fails (Throttling: Rate exceeded)
  • #108 Instance Downscaling does not complete
• Config: With #108 the new configuration parameter instance-termination-timeout was introduced.

v0.0.10 (2019-10-13)

Docker: docker pull thobe/sokar:v0.0.10

• Config: With #103 the deprecated parameter sca.nomad.mode was removed. That parameter was replaced by sca.mode in a previous release.
• Build: With #99 sokar is build based on golang 1.13.1 and the docker image is based on alpine 3.10.
• With #98 sokar won't modify any scaleObject automatically any more. Now the ScaleObjectWatcher is disabled in dry-run mode. For more information about dry-run mode see DryRunMode.md.
• Refactor: With #95 the code was refactored to use the functional option approach instead of config structs.

v0.0.9 (2019-09-24)

Docker Image: docker pull thobe/sokar:v0.0.9

• With #90 sokar gets a real downscaling for nomad workers running on AWS.
  • This means:
    1. The nomad worker with least running allocations, CPU and memory will be selected as candidate.
    2. This nomad worker will be drained.
    3. Then the according instance is terminated and the AWS ASG's desired capacity is reduced accordingly.
• ScalingTarget: With #92 sokar can scale up/ down AWS EC2 instances that are managed by an AWS AutoScalingGroup. Therefore the ASG just have to be tagged with scale-object=<some_name> and sokar has to run in scaler mode aws-ec2 (--sca.mode=aws-ec2). Then if sokar is introduced to scale the scale-object some_name (--scale-object.name=some_name) he would adjust the number of instances created by this ASG based on the scaling alerts he gets.
• Config: With #92 the config parameter --sca.nomad.mode is deprecated and replaced by --sca.mode. Furthermore the possible values for this parameter are now: nomad-job instead of job, nomad-dc instead of dc and aws-ec2. The old values job and dc are deprecated.
• Config: With #88 the interval sokar checks if someone externally (e.g. a deplyoment) has changed the scale of the scale-object is now configurable (--sca.watcher-interval).