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| 1 | +date: Apr 5, 2019 |
| 2 | + |
| 3 | +changes: |
| 4 | +- area: access log |
| 5 | + change: | |
| 6 | + added a new flag for upstream retry count exceeded. |
| 7 | +- area: access log |
| 8 | + change: | |
| 9 | + added a :ref:`gRPC filter <envoy_api_msg_config.filter.accesslog.v2.GrpcStatusFilter>` to allow filtering on gRPC status. |
| 10 | +- area: access log |
| 11 | + change: | |
| 12 | + added a new flag for stream idle timeout. |
| 13 | +- area: access log |
| 14 | + change: | |
| 15 | + added a new field for upstream transport failure reason in :ref:`file access logger <config_access_log_format_upstream_transport_failure_reason>` and |
| 16 | + :ref:`gRPC access logger <envoy_api_field_data.accesslog.v2.AccessLogCommon.upstream_transport_failure_reason>` for HTTP access logs. |
| 17 | +- area: access log |
| 18 | + change: | |
| 19 | + added new fields for downstream x509 information (URI sans and subject) to file and gRPC access logger. |
| 20 | +- area: admin |
| 21 | + change: | |
| 22 | + the admin server can now be accessed via HTTP/2 (prior knowledge). |
| 23 | +- area: admin |
| 24 | + change: | |
| 25 | + changed HTTP response status code from 400 to 405 when attempting to GET a POST-only route (such as /quitquitquit). |
| 26 | +- area: buffer |
| 27 | + change: | |
| 28 | + fix vulnerabilities when allocation fails. |
| 29 | +- area: build |
| 30 | + change: | |
| 31 | + releases are built with GCC-7 and linked with LLD. |
| 32 | +- area: build |
| 33 | + change: | |
| 34 | + dev docker images :ref:`have been split <install_binaries>` from tagged images for easier |
| 35 | + discoverability in Docker Hub. Additionally, we now build images for point releases. |
| 36 | +- area: config |
| 37 | + change: | |
| 38 | + added support of using google.protobuf.Any in opaque configs for extensions. |
| 39 | +- area: config |
| 40 | + change: | |
| 41 | + logging warnings when deprecated fields are in use. |
| 42 | +- area: config |
| 43 | + change: | |
| 44 | + removed deprecated --v2-config-only from command line config. |
| 45 | +- area: config |
| 46 | + change: | |
| 47 | + removed deprecated_v1 sds_config from :ref:`Bootstrap config <config_overview_v2_bootstrap>`. |
| 48 | +- area: config |
| 49 | + change: | |
| 50 | + removed the deprecated_v1 config option from :ref:`ring hash <envoy_api_msg_Cluster.RingHashLbConfig>`. |
| 51 | +- area: config |
| 52 | + change: | |
| 53 | + removed REST_LEGACY as a valid :ref:`ApiType <envoy_api_field_core.ApiConfigSource.api_type>`. |
| 54 | +- area: config |
| 55 | + change: | |
| 56 | + finish cluster warming only when a named response i.e. ClusterLoadAssignment associated to the cluster being warmed comes in the EDS response. This is a behavioural change from the current implementation where warming of cluster completes on missing load assignments also. |
| 57 | +- area: config |
| 58 | + change: | |
| 59 | + use Envoy cpuset size to set the default number or worker threads if :option:`--cpuset-threads` is enabled. |
| 60 | +- area: config |
| 61 | + change: | |
| 62 | + added support for :ref:`initial_fetch_timeout <envoy_api_field_core.ConfigSource.initial_fetch_timeout>`. The timeout is disabled by default. |
| 63 | +- area: cors |
| 64 | + change: | |
| 65 | + added :ref:`filter_enabled & shadow_enabled RuntimeFractionalPercent flags <cors-runtime>` to filter. |
| 66 | +- area: csrf |
| 67 | + change: | |
| 68 | + added. |
| 69 | +- area: ext_authz |
| 70 | + change: | |
| 71 | + added support for buffering request body. |
| 72 | +- area: ext_authz |
| 73 | + change: | |
| 74 | + migrated from v2alpha to v2 and improved docs. |
| 75 | +- area: ext_authz |
| 76 | + change: | |
| 77 | + added a configurable option to make the gRPC service cross-compatible with V2Alpha. Note that this feature is already deprecated. It should be used for a short time, and only when transitioning from alpha to V2 release version. |
| 78 | +- area: ext_authz |
| 79 | + change: | |
| 80 | + migrated from v2alpha to v2 and improved the documentation. |
| 81 | +- area: ext_authz |
| 82 | + change: | |
| 83 | + authorization request and response configuration has been separated into two distinct objects: :ref:`authorization request |
| 84 | + <envoy_api_field_config.filter.http.ext_authz.v2.HttpService.authorization_request>` and :ref:`authorization response |
| 85 | + <envoy_api_field_config.filter.http.ext_authz.v2.HttpService.authorization_response>`. In addition, :ref:`client headers |
| 86 | + <envoy_api_field_config.filter.http.ext_authz.v2.AuthorizationResponse.allowed_client_headers>` and :ref:`upstream headers |
| 87 | + <envoy_api_field_config.filter.http.ext_authz.v2.AuthorizationResponse.allowed_upstream_headers>` replaces the previous ``allowed_authorization_headers-`` object. |
| 88 | + All the control header lists now support :ref:`string matcher <envoy_api_msg_type.matcher.StringMatcher>` instead of standard string. |
| 89 | +- area: fault |
| 90 | + change: | |
| 91 | + added the :ref:`max_active_faults |
| 92 | + <envoy_api_field_config.filter.http.fault.v2.HTTPFault.max_active_faults>` setting, as well as |
| 93 | + :ref:`statistics <config_http_filters_fault_injection_stats>` for the number of active faults |
| 94 | + and the number of faults the overflowed. |
| 95 | +- area: fault |
| 96 | + change: | |
| 97 | + added :ref:`response rate limit |
| 98 | + <envoy_api_field_config.filter.http.fault.v2.HTTPFault.response_rate_limit>` fault injection. |
| 99 | +- area: fault |
| 100 | + change: | |
| 101 | + added :ref:`HTTP header fault configuration |
| 102 | + <config_http_filters_fault_injection_http_header>` to the HTTP fault filter. |
| 103 | +- area: governance |
| 104 | + change: | |
| 105 | + extending Envoy deprecation policy from 1 release (0-3 months) to 2 releases (3-6 months). |
| 106 | +- area: health check |
| 107 | + change: | |
| 108 | + expected response codes in http health checks are now :ref:`configurable <envoy_api_msg_core.HealthCheck.HttpHealthCheck>`. |
| 109 | +- area: http |
| 110 | + change: | |
| 111 | + added new grpc_http1_reverse_bridge filter for converting gRPC requests into HTTP/1.1 requests. |
| 112 | +- area: http |
| 113 | + change: | |
| 114 | + fixed a bug where Content-Length:0 was added to HTTP/1 204 responses. |
| 115 | +- area: http |
| 116 | + change: | |
| 117 | + added :ref:`max request headers size <envoy_api_field_config.filter.network.http_connection_manager.v2.HttpConnectionManager.max_request_headers_kb>`. The default behaviour is unchanged. |
| 118 | +- area: http |
| 119 | + change: | |
| 120 | + added modifyDecodingBuffer/modifyEncodingBuffer to allow modifying the buffered request/response data. |
| 121 | +- area: http |
| 122 | + change: | |
| 123 | + added encodeComplete/decodeComplete. These are invoked at the end of the stream, after all data has been encoded/decoded respectively. Default implementation is a no-op. |
| 124 | +- area: outlier_detection |
| 125 | + change: | |
| 126 | + added support for :ref:`outlier detection event protobuf-based logging <arch_overview_outlier_detection_logging>`. |
| 127 | +- area: mysql |
| 128 | + change: | |
| 129 | + added a MySQL proxy filter that is capable of parsing SQL queries over MySQL wire protocol. Refer to :ref:`MySQL proxy <config_network_filters_mysql_proxy>` for more details. |
| 130 | +- area: performance |
| 131 | + change: | |
| 132 | + new buffer implementation (disabled by default; to test it, add "--use-libevent-buffers 0" to the command-line arguments when starting Envoy). |
| 133 | +- area: jwt_authn |
| 134 | + change: | |
| 135 | + added :ref:`filter_state_rules <envoy_api_field_config.filter.http.jwt_authn.v2alpha.jwtauthentication.rules>` to allow specifying requirements from filterState by other filters. |
| 136 | +- area: ratelimit |
| 137 | + change: | |
| 138 | + removed deprecated rate limit configuration from bootstrap. |
| 139 | +- area: redis |
| 140 | + change: | |
| 141 | + added :ref:`hashtagging <envoy_api_field_config.filter.network.redis_proxy.v2.RedisProxy.ConnPoolSettings.enable_hashtagging>` to guarantee a given key's upstream. |
| 142 | +- area: redis |
| 143 | + change: | |
| 144 | + added :ref:`latency stats <config_network_filters_redis_proxy_per_command_stats>` for commands. |
| 145 | +- area: redis |
| 146 | + change: | |
| 147 | + added :ref:`success and error stats <config_network_filters_redis_proxy_per_command_stats>` for commands. |
| 148 | +- area: redis |
| 149 | + change: | |
| 150 | + migrate hash function for host selection to `MurmurHash2 <https://sites.google.com/site/murmurhash>`_ from std::hash. MurmurHash2 is compatible with std::hash in GNU libstdc++ 3.4.20 or above. This is typically the case when compiled on Linux and not macOS. |
| 151 | +- area: redis |
| 152 | + change: | |
| 153 | + added :ref:`latency_in_micros <envoy_api_field_config.filter.network.redis_proxy.v2.RedisProxy.latency_in_micros>` to specify the redis commands stats time unit in microseconds. |
| 154 | +- area: router |
| 155 | + change: | |
| 156 | + added ability to configure a :ref:`retry policy <envoy_api_msg_route.RetryPolicy>` at the |
| 157 | + virtual host level. |
| 158 | +- area: router |
| 159 | + change: | |
| 160 | + added reset reason to response body when upstream reset happens. After this change, the response body will be of the form ``upstream connect error or disconnect/reset before headers. reset reason:``. |
| 161 | +- area: router |
| 162 | + change: | |
| 163 | + added :ref:`rq_reset_after_downstream_response_started <config_http_filters_router_stats>` counter stat to router stats. |
| 164 | +- area: router |
| 165 | + change: | |
| 166 | + added per-route configuration of :ref:`internal redirects <envoy_api_field_route.RouteAction.internal_redirect_action>`. |
| 167 | +- area: router |
| 168 | + change: | |
| 169 | + removed deprecated route-action level headers_to_add/remove. |
| 170 | +- area: router |
| 171 | + change: | |
| 172 | + made :ref:`max retries header <config_http_filters_router_x-envoy-max-retries>` take precedence over the number of retries in route and virtual host retry policies. |
| 173 | +- area: router |
| 174 | + change: | |
| 175 | + added support for prefix wildcards in :ref:`virtual host domains <envoy_api_field_route.VirtualHost.domains>`. |
| 176 | +- area: stats |
| 177 | + change: | |
| 178 | + added support for histograms in prometheus. |
| 179 | +- area: stats |
| 180 | + change: | |
| 181 | + added usedonly flag to prometheus stats to only output metrics which have been |
| 182 | + updated at least once. |
| 183 | +- area: stats |
| 184 | + change: | |
| 185 | + added gauges tracking remaining resources before circuit breakers open. |
| 186 | +- area: tap |
| 187 | + change: | |
| 188 | + added new alpha :ref:`HTTP tap filter <config_http_filters_tap>`. |
| 189 | +- area: tls |
| 190 | + change: | |
| 191 | + enabled TLS 1.3 on the server-side (non-FIPS builds). |
| 192 | +- area: upstream |
| 193 | + change: | |
| 194 | + add hash_function to specify the hash function for :ref:`ring hash <envoy_api_msg_Cluster.RingHashLbConfig>` as either xxHash or `murmurHash2 <https://sites.google.com/site/murmurhash>`_. MurmurHash2 is compatible with std::hash in GNU libstdc++ 3.4.20 or above. This is typically the case when compiled on Linux and not macOS. |
| 195 | +- area: upstream |
| 196 | + change: | |
| 197 | + added :ref:`degraded health value <arch_overview_load_balancing_degraded>` which allows |
| 198 | + routing to certain hosts only when there are insufficient healthy hosts available. |
| 199 | +- area: upstream |
| 200 | + change: | |
| 201 | + add cluster factory to allow creating and registering :ref:`custom cluster type <arch_overview_service_discovery_types_custom>`. |
| 202 | +- area: upstream |
| 203 | + change: | |
| 204 | + added a :ref:`circuit breaker <arch_overview_circuit_break_cluster_maximum_connection_pools>` to limit the number of concurrent connection pools in use. |
| 205 | +- area: tracing |
| 206 | + change: | |
| 207 | + added :ref:`verbose <envoy_api_field_config.filter.network.http_connection_manager.v2.HttpConnectionManager.tracing>` to support logging annotations on spans. |
| 208 | +- area: upstream |
| 209 | + change: | |
| 210 | + added support for host weighting and :ref:`locality weighting <arch_overview_load_balancing_locality_weighted_lb>` in the :ref:`ring hash load balancer <arch_overview_load_balancing_types_ring_hash>`, and added a :ref:`maximum_ring_size <envoy_api_field_Cluster.RingHashLbConfig.maximum_ring_size>` config parameter to strictly bound the ring size. |
| 211 | +- area: zookeeper |
| 212 | + change: | |
| 213 | + added a ZooKeeper proxy filter that parses ZooKeeper messages (requests/responses/events). |
| 214 | + Refer to :ref:`ZooKeeper proxy <config_network_filters_zookeeper_proxy>` for more details. |
| 215 | +- area: upstream |
| 216 | + change: | |
| 217 | + added configuration option to select any host when the fallback policy fails. |
| 218 | +- area: upstream |
| 219 | + change: | |
| 220 | + stopped incrementing upstream_rq_total for HTTP/1 conn pool when request is circuit broken. |
| 221 | +
|
| 222 | +deprecated: |
| 223 | +- area: ext_authz |
| 224 | + change: | |
| 225 | + Use of ``use_alpha`` in :ref:`Ext-Authz Authorization Service <envoy_api_file_envoy/service/auth/v2/external_auth.proto>` is deprecated. It should be used for a short time, and only when transitioning from alpha to V2 release version. |
| 226 | +- area: cors |
| 227 | + change: | |
| 228 | + Use of ``enabled`` in ``CorsPolicy``, found in |
| 229 | + :ref:`route.proto <envoy_api_file_envoy/api/v2/route/route.proto>`. |
| 230 | + Set the ``filter_enabled`` field instead. |
| 231 | +- area: fault_delay |
| 232 | + change: | |
| 233 | + Use of the ``type`` field in the ``FaultDelay`` message (found in |
| 234 | + :ref:`fault.proto <envoy_api_file_envoy/config/filter/fault/v2/fault.proto>`) |
| 235 | + has been deprecated. It was never used and setting it has no effect. It will be removed in the |
| 236 | + following release. |
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