Environment Variables

zipkin-server is a drop-in replacement for the .

 binds the following environment variables from zipkin-scala:

• QUERY_PORT: Listen port for the http api and web ui; Defaults to 9411
• QUERY_ENABLED: false disables the query api and UI assets. Search may also be disabled for the storage backend if it is not needed; Defaults to true
• SEARCH_ENABLED: false disables trace search requests on the storage backend. Does not disable trace by ID or dependency queries. Disable this when you use another service (such as logs) to find trace IDs; Defaults to true
• QUERY_LOG_LEVEL: Log level written to the console; Defaults to INFO
• QUERY_LOOKBACK: How many milliseconds queries can look back from endTs; Defaults to 24 hours (two daily buckets: one for today and one for yesterday)
• STORAGE_TYPE: SpanStore implementation: one of mem, mysql, cassandra, elasticsearch
• COLLECTOR_SAMPLE_RATE: Percentage of traces to retain, defaults to always sample (1.0).

Cassandra Storage

Zipkin's  supports version 3.11+ and applies when STORAGE_TYPE is set to cassandra3:

* `CASSANDRA_KEYSPACE`: The keyspace to use. Defaults to "zipkin2"* `CASSANDRA_CONTACT_POINTS`: Comma separated list of host addresses part of Cassandra cluster. You can also specify a custom port with 'host:port'. Defaults to localhost on port 9042.* `CASSANDRA_LOCAL_DC`: Name of the datacenter that will be considered "local" for latency load balancing. When unset, load-balancing is round-robin.* `CASSANDRA_ENSURE_SCHEMA`: Ensuring cassandra has the latest schema. If enabled tries to execute scripts in the classpath prefixed with `cassandra-schema-cql3`. Defaults to true* `CASSANDRA_USERNAME` and `CASSANDRA_PASSWORD`: Cassandra authentication. Will throw an exception on startup if authentication fails. No default* `CASSANDRA_USE_SSL`: Requires `javax.net.ssl.trustStore` and `javax.net.ssl.trustStorePassword`, defaults to false.

Elasticsearch Storage

Zipkin's  supports versions 2-6.x and applies when STORAGE_TYPE is set to elasticsearch

The following apply when STORAGE_TYPE is set to elasticsearch:

* `ES_HOSTS`: A comma separated list of elasticsearch base urls to connect to ex. http://host:9200.              Defaults to "http://localhost:9200".* `ES_PIPELINE`: Only valid when the destination is Elasticsearch 5+. Indicates the ingest                 pipeline used before spans are indexed. No default.* `ES_TIMEOUT`: Controls the connect, read and write socket timeouts (in milliseconds) for                Elasticsearch Api. Defaults to 10000 (10 seconds)* `ES_MAX_REQUESTS`: Only valid when the transport is http. Sets maximum in-flight requests from                     this process to any Elasticsearch host. Defaults to 64.* `ES_INDEX`: The index prefix to use when generating daily index names. Defaults to zipkin.* `ES_DATE_SEPARATOR`: The date separator to use when generating daily index names. Defaults to '-'.* `ES_INDEX_SHARDS`: The number of shards to split the index into. Each shard and its replicas                     are assigned to a machine in the cluster. Increasing the number of shards                     and machines in the cluster will improve read and write performance. Number                     of shards cannot be changed for existing indices, but new daily indices                     will pick up changes to the setting. Defaults to 5.* `ES_INDEX_REPLICAS`: The number of replica copies of each shard in the index. Each shard and                       its replicas are assigned to a machine in the cluster. Increasing the                       number of replicas and machines in the cluster will improve read                       performance, but not write performance. Number of replicas can be changed                       for existing indices. Defaults to 1. It is highly discouraged to set this                       to 0 as it would mean a machine failure results in data loss.* `ES_USERNAME` and `ES_PASSWORD`: Elasticsearch basic authentication, which defaults to empty string.                                   Use when X-Pack security (formerly Shield) is in place.* `ES_HTTP_LOGGING`: When set, controls the volume of HTTP logging of the Elasticsearch Api.                     Options are BASIC, HEADERS, BODY

MySQL Storage

The following apply when STORAGE_TYPE is set to mysql:

* `MYSQL_DB`: The database to use. Defaults to "zipkin".* `MYSQL_USER` and `MYSQL_PASS`: MySQL authentication, which defaults to empty string.* `MYSQL_HOST`: Defaults to localhost* `MYSQL_TCP_PORT`: Defaults to 3306* `MYSQL_MAX_CONNECTIONS`: Maximum concurrent connections, defaults to 10* `MYSQL_USE_SSL`: Requires `javax.net.ssl.trustStore` and `javax.net.ssl.trustStorePassword`, defaults to false.

原文地址：：有存储到mysql、Cassandra、es的各个配置选项和相关的启动命令。