Thanos - v0.31.0

What's Changed

#5990 Cache/Redis: add support for Redis Sentinel via new option master_name.
#6008 *: Add counter metric gate_queries_total to gate.
#5926 Receiver: Add experimental string interning in writer. Can be enabled with a hidden flag --writer.intern.
#5773 Store: Support disabling cache index header file by setting --disable-caching-index-header-file. When toggled, Stores can run without needing persistent disks.
#5653 Receive: Allow setting hashing algorithm per tenant in hashrings config.
#6074 *: Add histogram metrics thanos_store_server_series_requested and thanos_store_server_chunks_requested to all Stores.
#6074 *: Allow configuring series and sample limits per Series request for all Stores.
#6104 Store: Support S3 session token.
#5548 Query: Add experimental support for load balancing across multiple Store endpoints.
#6148 Query-frontend: Add traceID to slow query detected log line.
#6153 Query-frontend: Add remote_user (from http basic auth) and remote_addr to slow query detected log line.

#5995 Sidecar: Loads TLS certificate during startup.
#6044 Receive: Mark out-of-window errors as conflict when out-of-window samples ingestion is used.
#6050 Store: Re-try bucket store initial sync upon failure.
#6067 Receive: Fix panic when querying uninitialized TSDBs.
#6082 Query: Don't error when no stores are matched.
#6098 Cache/Redis: Upgrade rueidis to v0.0.93 to fix potential panic when the client-side caching is disabled.
#6103 Mixins(Rule): Fix expression for long rule evaluations.
#6121 Receive: Deduplicate meta-monitoring queries for Active Series Limiting.
#6137 Downsample: Repair of non-empty XOR chunks during 1h downsampling.
#6125 Query Frontend: Fix vertical shardable instant queries do not produce sorted results for sort, sort_desc, topk and bottomk functions.
#6203 Receive: Fix panic in head compaction under high query load.

#6010 *: Upgrade Prometheus to v0.42.0.
#5999 *: Upgrade Alertmanager dependency to v0.25.0.
#5887 Tracing: Make sure rate limiting sampler is the default, as was the case in version pre-0.29.0.
#5997 Rule: switch to miekgdns DNS resolver as the default one.
#6035 Tools (replicate): Support all types of matchers to match blocks for replication. Change matcher parameter from string slice to a single string.
#6131 Store: breaking :warning: Use Histograms instead of Summaries for bucket metrics.