Fill in the Glossary page on the web site about istio.io HOT 2 CLOSED

I did not see a Glossary, so I started making one for my own use. Feel free to reject all of it, as I wrote it for myself only.

• Service - ?

• Service instance

• Service version

• Source - ?

• Destination -- a fully-qualified hostname, some tags, a Load balancing policy, a Circuit breaker policy,
  a Timeout policy, a Retry policy, a L7 fault injection policy, a L4 fault injection policy, and
  "Custom policy implementations"

• RouteRule - destination, MatchCondition, 0..N DestinationWeights, precedence

• ProxyMeshConfig -- nothing

• Load balancing policy -- ROUND_ROBIN|LEAST_CONN|RANDOM|Any

• Circuit breaker policy -- Currently a bunch of threshold parameters, with a work item to support all Envoy capabilities

• Timeout policy -- seconds (a double), plus a feature to let downstream service specify via a header (!?!), plus "custom"

• Retry policy -- # of attempts, plus a feature to let downstream service specify via a header (!?!), plus "custom"

• L7 fault injection policy -- Delay fault, Abort fault, plus some tags to trigger them on specific header patterns

• L4 fault injection policy -- bandwidth Throttle, TCP terminate connection

• MatchCondition -- source, (source) tags, TCP L4MatchAttributes, UDP L4MatchAttributes, "Set of HTTP match conditions"

• DestinationWeight -- fully-qualified destination, tags, and weight (the sum of weights "across destination" should add up to 100). (Or do we mean RFC 2119 style "SHOULD" for "should)?

• L4MatchAttributes just 0..N source and destination subnet strings, of the forms a.b.c.d and a.b.c.d/xx

• HTTP match conditions -- This seems to be HTTP and gRPC headers ... the examples given are "uri", "scheme", "authority", and we
  match them case-insensitive, and using exact|prefix|regexp format

• Delay fault -- fixed or exponential delay. Fixed has a duration plus a % of requests to delay. Exponential has a "mean" (that I don't understand)

• Abort fault -- A type plus % of requests to abort. The types are only HTTP, HTTP/2, gRPC. No TCP resets or TLS (?!?)

• Istio Manager

• Istio Mixer

• Istio Proxy

• Proxy Mesh

• Upstream

• CDS Cluster Discovery Service -- See https://lyft.github.io/envoy/docs/configuration/cluster_manager/cds.html?highlight=cds#cluster-discovery-service

• SDS Service Discovery Service -- See https://lyft.github.io/envoy/docs/intro/arch_overview/service_discovery.html#arch-overview-service-discovery-sds

• RDS Route Discovery Service -- See https://lyft.github.io/envoy/docs/configuration/http_conn_man/rds.html#route-discovery-service

from istio.io.

Closing this, as we have a glossary now.

from istio.io.