0.16.0rc2 / 2015-09-30

BREAKING CHANGES:

• [CHANGE] Renamed global.labels to global.external_labels

All changes:

• [BUGFIX] Fix high CPU usage on configuration reload
• [BUGFIX] Fix disappearing __params on configuration reload
• [CHANGE] Renamed global.labels to global.external_labels
• [BUGFIX] Make labelmap action available through configuration
• [ENHANCEMENT] Several flaky tests fixed
• [ENHANCEMENT] Switched to common routing package
• [BUGFIX] Fix direct access of protobuf fields
• [BUGFIX] Fix panic on Consul request error
• [ENHANCEMENT] Usage of more resilient metric decoder
• [BUGFIX] Redirect of graph endpoint for prefixed setups

0.16.0rc1 / 2015-09-18

BREAKING CHANGES:

• Release tarballs now contain the built binaries in a nested directory.
• The hash_mod relabeling action now uses MD5 hashes instead of FNV hashes to
  achieve a better distribution.
• The DNS-SD meta label __meta_dns_srv_name was renamed to __meta_dns_name
  to reflect support for other record types than SRV.
• The default full refresh interval for the file-based service discovery has been
  increased from 30 seconds to 5 minutes.
• In relabeling, parts of a source label that weren't matched by
  the specified regular expression are no longer included in the replacement output.
• Queries no longer interpolate between two data points. Instead, the resulting
  value will always be the latest value before the evaluation query timestamp.
• Regular expressions supplied via the configuration are now anchored to match
  full strings instead of substrings.
• Global labels are not appended upon storing time series anymore. Instead,
  they are only appended when communicating with external systems
  (Alertmanager, remote storages, federation).
• The names and units of metrics related to remote storage sample appends have
  been changed.
• The experimental support for writing to InfluxDB has been updated to work
  with InfluxDB 0.9.x. 0.8.x versions of InfluxDB are not supported anymore.

All changes:

• [CHANGE] Vendoring is now done via govendor instead of godep.
• [CHANGE] Change web UI root page to show the graphing interface instead of
  the server status page.
• [CHANGE] Append global labels only when communicating with external systems
  instead of storing them locally.
• [CHANGE] Change all regexes in the configuration to do full-string matches
  instead of substring matches.
• [CHANGE] Remove interpolation of vector values in queries.
• [CHANGE] For alert SUMMARY/DESCRIPTION template fields, cast the alert
  value to float64 to work with common templating functions.
• [CHANGE] In relabeling, don't include unmatched source label parts in the
  replacement.
• [CHANGE] Change default full refresh interval for the file-based service
  discovery from 30 seconds to 5 minutes.
• [CHANGE] Rename the DNS-SD meta label __meta_dns_srv_name to
  __meta_dns_name to reflect support for other record types than SRV.
• [CHANGE] Release tarballs now contain the binaries in a nested directory.
• [CHANGE] Update InfluxDB write support to work with InfluxDB 0.9.x.
• [FEATURE] Allow configuring TLS options in scrape configurations.
• [FEATURE] Add instrumentation around configuration reloads.
• [FEATURE] Add bool modifier to comparison operators to enable boolean
  (0/1) output instead of filtering.
• [FEATURE] In Zookeeper serverset discovery, provide __meta_serverset_shard
  label with the serverset shard number.
• [FEATURE] Provide __meta_consul_service_id meta label in Consul service
  discovery.
• [FEATURE] Allow scalar expressions in recording rules to enable use cases
  such as building constant metrics.
• [FEATURE] Add label_replace() and vector() query language functions.
• [FEATURE] In Consul service discovery, fill in the __meta_consul_dc
  datacenter label from the Consul agent when it's not set in the Consul SD
  config.
• [FEATURE] Scrape all services upon empty services list in Consul service
  discovery.
• [FEATURE] Add labelmap relabeling action to map a set of input labels to a
  set of output labels using regular expressions.
• [FEATURE] Introduce __tmp as a relabeling label prefix that is guaranteed
  to not be used by Prometheus internally.
• [FEATURE] Kubernetes-based service discovery.
• [FEATURE] Marathon-based service discovery.
• [FEATURE] Support multiple series names in console graphs JavaScript library.
• [FEATURE] Allow reloading configuration via web handler at /-/reload.
• [FEATURE] Updates to promtool to reflect new Prometheus configuration
  features.
• [FEATURE] Add proxy_url parameter to scrape configurations to enable use of
  proxy servers.
• [FEATURE] Add console templates for Prometheus itself.
• [FEATURE] Allow relabeling the protocol scheme of targets.
• [FEATURE] Add predict_linear() query language function.
• [FEATURE] Support for authentication using bearer tokens, client certs, and
  CA certs.
• [FEATURE] Implement unary expressions for vector types (-foo, +foo).
• [FEATURE] Add console templates for the SNMP exporter.
• [FEATURE] Make it possible to relabel target scrape query parameters.
• [FEATURE] Add support for A and AAAA records in DNS service discovery.
• [ENHANCEMENT] Update vendored dependencies.
• [ENHANCEMENT] Add compression to more HTTP handlers.
• [ENHANCEMENT] Make -web.external-url flag help string more verbose.
• [ENHANCEMENT] Improve metrics around remote storage queues.
• [ENHANCEMENT] Use Go 1.5.1 instead of Go 1.4.2 in builds.
• [ENHANCEMENT] Update the architecture diagram in the README.md.
• [ENHANCEMENT] Time out sample appends in retrieval layer if the storage is
  backlogging.
• [ENHANCEMENT] Make hash_mod relabeling action use MD5 instead of FNV to
  enable better hash distribution.
• [ENHANCEMENT] Better tracking of targets between same service discovery
  mechanisms in one scrape configuration.
• [ENHANCEMENT] Handle parser and query evaluation runtime panics more
  gracefully.
• [ENHANCEMENT] Add IDs to H2 tags on status page to allow anchored linking.
• [BUGFIX] Fix series file deletion behavior when purging archived series.
• [BUGFIX] Fix error checking and logging around checkpointing.
• [BUGFIX] Fix map initialization in target manager.
• [BUGFIX] Fix draining of file watcher events in file-based service discovery.
• [BUGFIX] Add POST handler for /debug endpoints to fix CPU profiling.
• [BUGFIX] Fix several flaky tests.
• [BUGFIX] Fix busylooping in case a scrape configuration has no target
  providers defined.
• [BUGFIX] Fix exit behavior of static target provider.
• [BUGFIX] Fix configuration reloading loop upon shutdown.
• [BUGFIX] Add missing check for nil expression in expression parser.
• [BUGFIX] Fix error handling bug in test code.
• [BUGFIX] Fix Consul port meta label.
• [BUGFIX] Fix lexer bug that treated non-Latin Unicode digits as digits.
• [CLEANUP] Update build environment scripts and Makefiles to work better with
  native Go build mechanisms and new Go 1.5 experimental vendoring support.
• [CLEANUP] Remove logged notice about 0.14.x configuration file format change.
• [CLEANUP] Move scrape-time metric label modification into SampleAppenders.
• [CLEANUP] Switch from github.com/client_golang/model to
  github.com/common/model and related type cleanups.
• [CLEANUP] Switch from github.com/client_golang/extraction to
  github.com/common/expfmt and related type cleanups.
• [CLEANUP] Exit Prometheus when the web server encounters a startup error.
• [CLEANUP] Remove non-functional alert-silencing links on alerting page.
• [CLEANUP] General cleanups to comments and code, derived from golint,
  go vet, or otherwise.
• [CLEANUP] When entering crash recovery, tell users how to cleanly shut down
  Prometheus.
• [CLEANUP] Remove internal support for multi-statement queries in query engine.
• [CLEANUP] Update AUTHORS.md.
• [CLEANUP] Don't warn/increment metric upon encountering equal timestamps for
  the same series upon append.
• [CLEANUP] Resolve relative paths during configuration loading.

0.15.1 / 2015-07-27

• [BUGFIX] Fix vector matching behavior when there is a mix of equality and
  non-equality matchers in a vector selector and one matcher matches no series.
• [ENHANCEMENT] Allow overriding GOARCH and GOOS in Makefile.INCLUDE.
• [ENHANCEMENT] Update vendored dependencies.

0.15.0 / 2015-07-21

BREAKING CHANGES:

• Relative paths for rule files are now evaluated relative to the config file.
• External reachability flags (-web.*) consolidated.
• The default storage directory has been changed from /tmp/metrics
  to data in the local directory.
• The rule_checker tool has been replaced by promtool with
  different flags and more functionality.
• Empty labels are now removed upon ingestion into the
  storage. Matching empty labels is now equivalent to matching unset
  labels (mymetric{label=""} now matches series that don't have
  label set at all).
• The special __meta_consul_tags label in Consul service discovery
  now starts and ends with tag separators to enable easier regex
  matching.
• The default scrape interval has been changed back from 1 minute to
  10 seconds.

ALL CHANGES:

• [CHANGE] Change default storage directory to data in the current
  working directory.
• [CHANGE] Consolidate external reachability flags (-web.*)into one.
• [CHANGE] Deprecate keeping_extra modifier keyword, rename it to
  keep_common.
• [CHANGE] Improve label matching performance and treat unset labels
  like empty labels in label matchers.
• [CHANGE] Remove rule_checker tool and add generic promtool CLI
  tool which allows checking rules and configuration files.
• [CHANGE] Resolve rule files relative to config file.
• [CHANGE] Restore default ScrapeInterval of 1 minute instead of 10 seconds.
• [CHANGE] Surround __meta_consul_tags value with tag separators.
• [CHANGE] Update node disk console for new filesystem labels.
• [FEATURE] Add Consul's ServiceAddress, Address, and ServicePort as
  meta labels to enable setting a custom scrape address if needed.
• [FEATURE] Add hashmod relabel action to allow for horizontal
  sharding of Prometheus servers.
• [FEATURE] Add honor_labels scrape configuration option to not
  overwrite any labels exposed by the target.
• [FEATURE] Add basic federation support on /federate.
• [FEATURE] Add optional RUNBOOK field to alert statements.
• [FEATURE] Add pre-relabel target labels to status page.
• [FEATURE] Add version information endpoint under /version.
• [FEATURE] Added initial stable API version 1 under /api/v1,
  including ability to delete series and query more metadata.
• [FEATURE] Allow configuring query parameters when scraping metrics endpoints.
• [FEATURE] Allow deleting time series via the new v1 API.
• [FEATURE] Allow individual ingested metrics to be relabeled.
• [FEATURE] Allow loading rule files from an entire directory.
• [FEATURE] Allow scalar expressions in range queries, improve error messages.
• [FEATURE] Support Zookeeper Serversets as a service discovery mechanism.
• [ENHANCEMENT] Add circleci yaml for Dockerfile test build.
• [ENHANCEMENT] Always show selected graph range, regardless of available data.
• [ENHANCEMENT] Change expression input field to multi-line textarea.
• [ENHANCEMENT] Enforce strict monotonicity of time stamps within a series.
• [ENHANCEMENT] Export build information as metric.
• [ENHANCEMENT] Improve UI of /alerts page.
• [ENHANCEMENT] Improve display of target labels on status page.
• [ENHANCEMENT] Improve initialization and routing functionality of web service.
• [ENHANCEMENT] Improve target URL handling and display.
• [ENHANCEMENT] New dockerfile using alpine-glibc base image and make.
• [ENHANCEMENT] Other minor fixes.
• [ENHANCEMENT] Preserve alert state across reloads.
• [ENHANCEMENT] Prettify flag help output even more.
• [ENHANCEMENT] README.md updates.
• [ENHANCEMENT] Raise error on unknown config parameters.
• [ENHANCEMENT] Refine v1 HTTP API output.
• [ENHANCEMENT] Show original configuration file contents on status
  page instead of serialized YAML.
• [ENHANCEMENT] Start HUP signal handler earlier to not exit upon HUP
  during startup.
• [ENHANCEMENT] Updated vendored dependencies.
• [BUGFIX] Do not panic in StringToDuration() on wrong duration unit.
• [BUGFIX] Exit on invalid rule files on startup.
• [BUGFIX] Fix a regression in the .Path console template variable.
• [BUGFIX] Fix chunk descriptor loading.
• [BUGFIX] Fix consoles "Prometheus" link to point to /
• [BUGFIX] Fix empty configuration file cases
• [BUGFIX] Fix float to int conversions in chunk encoding, which were
  broken for some architectures.
• [BUGFIX] Fix overflow detection for serverset config.
• [BUGFIX] Fix race conditions in retrieval layer.
• [BUGFIX] Fix shutdown deadlock in Consul SD code.
• [BUGFIX] Fix the race condition targets in the Makefile.
• [BUGFIX] Fix value display error in web console.
• [BUGFIX] Hide authentication credentials in config String() output.
• [BUGFIX] Increment dirty counter metric in storage only if
  setDirty(true) is called.
• [BUGFIX] Periodically refresh services in Consul to recover from
  missing events.
• [BUGFIX] Prevent overwrite of default global config when loading a
  configuration.
• [BUGFIX] Properly lex \r as whitespace in expression language.
• [BUGFIX] Validate label names in JSON target groups.
• [BUGFIX] Validate presence of regex field in relabeling configurations.
• [CLEANUP] Clean up initialization of remote storage queues.
• [CLEANUP] Fix go vet and golint violations.
• [CLEANUP] General cleanup of rules and query language code.
• [CLEANUP] Improve and simplify Dockerfile build steps.
• [CLEANUP] Improve and simplify build infrastructure, use go-bindata
  for web assets. Allow building without git.
• [CLEANUP] Move all utility packages into common util subdirectory.
• [CLEANUP] Refactor main, flag handling, and web package.
• [CLEANUP] Remove unused methods from Rule interface.
• [CLEANUP] Simplify default config handling.
• [CLEANUP] Switch human-readable times on web UI to UTC.
• [CLEANUP] Use templates.TemplateExpander for all page templates.
• [CLEANUP] Use new v1 HTTP API for querying and graphing.

0.15.0rc3 / 2015-07-20

CHANGES COMPARED TO RC2

• [BUGFIX] Fix empty configuration file cases
• [BUGFIX] Restore legacy API scalar format

0.15.0rc2 / 2015-07-16

CHANGES COMPARED TO RC1

BREAKING CHANGES:

• Relative paths for rule files are now evaluated relative to the config file.
• External reachability flags (-web.*) consolidated.

ALL CHANGES:

• [BUGFIX] Fix chunk descriptor loading.
• [ENHANCEMENT] Enforce strict monotonicity of time stamps within a series.
• [CLEANUP] Fix go vet and golint violations.
• [BUGFIX] Fix overflow detection for serverset config.
• [BUGFIX] Fix float to int conversions in chunk encoding, which were broken
  for some architectures.
• [BUGFIX] Fix a regression in the .Path console template variable.
• [BUGFIX] Fix race conditions in retrieval layer.
• [BUGFIX] Fix value display error in web console.
• [ENHANCEMENT] Export build information as metric.
• [ENHANCEMENT] New dockerfile using alpine-glibc base image and make.
• [BUGFIX] Fix the race condition targets in the Makefile.
• [BUGFIX] Hide authentication credentials in config String() output.
• [ENHANCEMENT] Refine v1 HTTP API output.
• [CHANGE] Resolve rule files relative to config file.
• [CHANGE] Consolidate external reachability flags (-web.*)into one.
• [ENHANCEMENT] Add circleci yaml for Dockerfile test build.
• [BUGFIX] Zookeeper SD: Handle serverset node not existing.
• [ENHANCEMENT] Preserve alert state across reloads.

0.15.0rc1 / 2015-06-25

BREAKING CHANGES:

• The default storage directory has been changed from /tmp/metrics to data
  in the local directory.
• The rule_checker tool has been replaced by promtool with different flags and more functionality.
• Empty labels are now removed upon ingestion into the storage. Matching empty labels is
  now equivalent to matching unset labels (mymetric{label=""} now matches
  series that don't have label set at all).
• If you are using Consul for service discovery, it will now choose Consul's
  ServiceAddress field for the instance address instead of the Address
  field, if it is present.
• The special __meta_consul_tags label in Consul service discovery now
  starts and ends with tag separators to enable easier regex matching.
• The default scrape interval has been changed back from 1 minute to 10 seconds.

ALL CHANGES:

• [ENHANCEMENT] Prettify flag help output even more.
• [CLEANUP] Use new v1 HTTP API for querying and graphing.
• [FEATURE] Add optional RUNBOOK field to alert statements.
• [FEATURE] Add hashmod relabel action to allow for horizontal sharding of Prometheus servers.
• [BUGFIX] Fix shutdown deadlock in Consul SD code.
• [BUGFIX] Periodically refresh services in Consul to recover from missing events.
• [CLEANUP] Improve and simplify Dockerfile build steps.
• [CLEANUP] Switch human-readable times on web UI to UTC.
• [ENHANCEMENT] Show original configuration file contents on status page instead of serialized YAML.
• [ENHANCEMENT] Improve UI of /alerts page.
• [CLEANUP] Clean up initialization of remote storage queues.
• [CLEANUP] Use templates.TemplateExpander for all page templates.
• [ENHANCEMENT] Improve target URL handling and display.
• [FEATURE] Add basic federation support on /federate.
• [FEATURE] Add honor_labels scrape configuration option to not overwrite any labels exposed by the target.
• [FEATURE] Allow configuring query parameters when scraping metrics endpoints.
• [ENHANCEMENT] README.md updates.
• [BUGFIX] Increment dirty counter metric in storage only if setDirty(true) is called.
• [CHANGE] Remove rule_checker tool and add generic promtool CLI tool which allows checking rules and configuration files.
• [CHANGE] Improve label matching performance and treat unset labels like empty labels in label matchers.
• [BUGFIX] Fix consoles "Prometheus" link to point to /
• [CHANGE] Change default storage directory to data in the current working directory.
• [CHANGE] Use Consul's ServiceAddress instead of Address as the instance address when the former is set.
• [FEATURE] Add version information endpoint under /version.
• [FEATURE] Support Zookeeper Serversets as a service discovery mechanism.
• [CLEANUP] Refactor main, flag handling, and web package.
• [FEATURE] Allow individual ingested metrics to be relabeled.
• [ENHANCEMENT] Always show selected graph range, regardless of available data.
• [ENHANCEMENT] Change expression input field to multi-line textarea.
• [ENHANCEMENT] Start HUP signal handler earlier to not exit upon HUP during startup.
• [ENHANCEMENT] Raise error on unknown config parameters.
• [CHANGE] Deprecate keeping_extra modifier keyword, rename it to keep_common.
• [BUGFIX] Validate presence of regex field in relabeling configurations.
• [CLEANUP] Improve and simplify build infrastructure, use go-bindata for web assets. Allow building without git.
• [FEATURE] Allow scalar expressions in range queries, improve error messages.
• [ENHANCEMENT] Improve display of target labels on status page.
• [BUGFIX] Prevent overwrite of default global config when loading a configuration.
• [FEATURE] Add pre-relabel target labels to status page.
• [FEATURE] Added initial stable API version 1 under /api/v1, including ability to delete series and query more metadata.
• [CLEANUP] General cleanup of rules and query language code.
• [CLEANUP] Remove unused methods from Rule interface.
• [BUGFIX] Validate label names in JSON target groups.
• [CLEANUP] Simplify default config handling.
• [CHANGE] Surround __meta_consul_tags value with tag separators.
• [ENHANCEMENT] Improve initialization and routing functionality of web service.
• [BUGFIX] Do not panic in StringToDuration() on wrong duration unit.
• [BUGFIX] Exit on invalid rule files on startup.
• [BUGFIX] Properly lex \r as whitespace in expression language.
• [FEATURE] Allow deleting time series via the new v1 API.
• [FEATURE] Allow loading rule files from an entire directory.
• [CHANGE] Restore default ScrapeInterval of 1 minute instead of 10 seconds.
• [CLEANUP] Move all utility packages into common util subdirectory.
• [ENHANCEMENT] Updated vendored dependencies.
• [ENHANCEMENT] Other minor fixes.

0.14.0 / 2015-06-01

• [CHANGE] Configuration format changed and switched to YAML.
  (See the provided migration tool.)
• [ENHANCEMENT] Redesign of state-preserving target discovery.
• [ENHANCEMENT] Allow specifying scrape URL scheme and basic HTTP auth for non-static targets.
• [FEATURE] Allow attaching meaningful labels to targets via relabeling.
• [FEATURE] Configuration/rule reloading at runtime.
• [FEATURE] Target discovery via file watches.
• [FEATURE] Target discovery via Consul.
• [ENHANCEMENT] Simplified binary operation evaluation.
• [ENHANCEMENT] More stable component initialization.
• [ENHANCEMENT] Added internal expression testing language.
• [BUGFIX] Fix graph links with path prefix.
• [ENHANCEMENT] Allow building from source without git.
• [ENHANCEMENT] Improve storage iterator performance.
• [ENHANCEMENT] Change logging output format and flags.
• [BUGFIX] Fix memory alignment bug for 32bit systems.
• [ENHANCEMENT] Improve web redirection behavior.
• [ENHANCEMENT] Allow overriding default hostname for Prometheus URLs.
• [BUGFIX] Fix double slash in URL sent to alertmanager.
• [FEATURE] Add resets() query function to count counter resets.
• [FEATURE] Add changes() query function to count the number of times a gauge changed.
• [FEATURE] Add increase() query function to calculate a counter's increase.
• [ENHANCEMENT] Limit retrievable samples to the storage's retention window.

0.14.0rc3 / 2015-05-29

Merge pull request #748 from prometheus/fabxc/cut

Cut 0.14.0rc3

0.14.0rc2 / 2015-05-23

Merge pull request #731 from prometheus/fabxc/cut-rc2

Cut v0.14.0rc2