2.35.0 / 2022-04-21

[Nexucis]

This Prometheus release is built with go1.18, which contains two noticeable changes related to TLS:

• TLS 1.0 and 1.1 disabled by default client-side.
  Prometheus users can override this with the min_version parameter of tls_config.

• Certificates signed with the SHA-1 hash function are rejected. This doesn't apply to self-signed root certificates.

• [CHANGE] TSDB: Delete *.tmp WAL files when Prometheus starts. deleting *.tmp WAL files on startup #10317

• [CHANGE] promtool: Add new flag --lint (enabled by default) for the commands check rules and check config, resulting in a new exit code (3) for linter errors. Add a --lint flag to the promtool check rules and check config commands #10435

• [FEATURE] Support for automatically setting the variable GOMAXPROCS to the container CPU limit. Enable with the flag --enable-feature=auto-gomaxprocs. Add auto-gomaxprocs optional feature #10498

• [FEATURE] PromQL: Extend statistics with total and peak number of samples in a query. Additionally, per-step statistics are available with --enable-feature=promql-per-step-stats and using stats=all in the query API.
  Enable with the flag --enable-feature=per-step-stats. Sample stats: total and peak #10369

• [ENHANCEMENT] Prometheus is built with Go 1.18. Build with Go 1.18 #10501

• [ENHANCEMENT] TSDB: more efficient sorting of postings read from WAL at startup. tsdb: more efficient sorting of postings read from WAL at startup #10500

• [ENHANCEMENT] Azure SD: Add metric to track Azure SD failures. Azure SD Failure metric and 404 Handling #10476

• [ENHANCEMENT] Azure SD: Add an optional resource_group configuration. Azure Service Discovery resource group filter #10365

• [ENHANCEMENT] Kubernetes SD: Support discovery.k8s.io/v1 EndpointSlice (previously only discovery.k8s.io/v1beta1 EndpointSlice was supported). Kubernetes SD: Support discovery.k8s.io/v1 EndpointSlice #9570

• [ENHANCEMENT] Kubernetes SD: Allow attaching node metadata to discovered pods. Allow attaching node metadata #10080

• [ENHANCEMENT] OAuth2: Support for using a proxy URL to fetch OAuth2 tokens. Update Prometheus common #10492

• [ENHANCEMENT] Configuration: Add the ability to disable HTTP2. Update Prometheus common #10492

• [ENHANCEMENT] Config: Support overriding minimum TLS version. Support overriding minimum TLS version #10610

• [BUGFIX] Kubernetes SD: Explicitly include gcp auth from k8s.io. Explicitly include gcp auth from k8s.io to kubernetes discovery #10516

• [BUGFIX] Fix OpenMetrics parser to sort uppercase labels correctly. Fix OpenMetrics parser to sort uppercase labels correctly. #10510

• [BUGFIX] UI: Fix scrape interval and duration tooltip not showing on target page. Fix scrape interval and duration tooltip not showing. #10545

• [BUGFIX] Tracing/GRPC: Set TLS credentials only when insecure is false. Tracing/GRPC: Set TLS credentials only when insecure is false. #10592

• [BUGFIX] Agent: Fix ID collision when loading a WAL with multiple segments. tsdb/agent: port grafana/agent#676 #10587

• [BUGFIX] Remote-write: Fix a deadlock between Batch and flushing the queue. Fix a deadlock between Batch and FlushAndShutdown #10608

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This discussion was created from the release 2.35.0 / 2022-04-21.