Spring Cloud 应用篇 之 Spring Cloud Sleuth + Zipkin（三）修改数据存储方式

（一）简介

默认情况下，Zipkin Server 会将跟踪信息存储在内存中，每次重启 Zipkin Server 都会使之前收集的跟踪信息丢失，并且当有大量跟踪信息时，内存存储也会造成性能瓶颈，所以通常我们都需要将跟踪信息存储到外部组件中，如 Mysql。

由于 Spring Boot 2.0 之后 Zipkin 不再推荐我们来自定义 Server 端了，那么如何把 Zipkin Server 修改为 Mysql 存储功能呢？答案还是和集成 RabbitMQ 一样，在启动 zipkin.jar 的时候，配置相关参数

（二）配置 zipkin server 

2.1 创建数据库、表信息

既然数据存储改为 Mysql，那么肯定要建立相关的表，建表的脚本文件 mysql.sql 在 GitHub 官方地址能查到，链接如下：

https://github.com/openzipkin/zipkin/blob/master/zipkin-storage/mysql-v1/src/main/resources/mysql.sql

这里会创建三张表，如下，具体表结构信息，大家可以自己查看

2.2 启动 zipkin

zipkin.jar 的 配置文件内容可以查看 GitHub 上官方的提供

https://github.com/openzipkin/zipkin/blob/master/zipkin-server/src/main/resources/zipkin-server-shared.yml

为了方便，我在这里展示部分内容：

1. zipkin:
2. collector:
3. rabbitmq:
4. # RabbitMQ server address list (comma-separated list of host:port)
5. addresses: ${<span class="hljs-symbol"><span class="hljs-symbol">RABBIT_ADDRESSES:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="6"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">concurrency:</span></span> ${RABBIT_CONCURRENCY:1}
6. # TCP connection timeout in milliseconds
7. connection-timeout: ${<span class="hljs-symbol"><span class="hljs-symbol">RABBIT_CONNECTION_TIMEOUT:</span></span><span class="hljs-number"><span class="hljs-number">60000</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="9"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">password:</span></span> ${RABBIT_PASSWORD:guest}
8. queue: ${<span class="hljs-symbol"><span class="hljs-symbol">RABBIT_QUEUE:</span></span>zipkin}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="11"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">username:</span></span> ${RABBIT_USER:guest}
9. virtual-host: ${<span class="hljs-symbol"><span class="hljs-symbol">RABBIT_VIRTUAL_HOST:</span></span>/}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="13"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">useSsl:</span></span> ${RABBIT_USE_SSL:false}
10. uri: ${<span class="hljs-symbol"><span class="hljs-symbol">RABBIT_URI:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="15"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">storage:</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="16"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> strict-trace-<span class="hljs-symbol"><span class="hljs-symbol">id:</span></span> ${STRICT_TRACE_ID:true}
11. search-enabled: ${<span class="hljs-symbol"><span class="hljs-symbol">SEARCH_ENABLED:</span></span><span class="hljs-literal"><span class="hljs-literal">true</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="18"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">type:</span></span> ${STORAGE_TYPE:mem}
12. mem:
13. # Maximum number of spans to keep in memory. When exceeded, oldest traces (and their spans) will be purged.
14. # A safe estimate is 1K of memory per span (each span with 2 annotations + 1 binary annotation), plus
15. # 100 MB for a safety buffer. You’ll need to verify in your own environment.
16. # Experimentally, it works with: max-spans of 500000 with JRE argument -Xmx600m.
17. max-spans: 500000
18. cassandra:
19. # Comma separated list of host addresses part of Cassandra cluster. Ports default to 9042 but you can also specify a custom port with ‘host:port’.
20. contact-points: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_CONTACT_POINTS:</span></span>localhost}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="28"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># Name of the datacenter that will be considered "local" for latency load balancing. When unset, load-balancing is round-robin.</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="29"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> local-<span class="hljs-symbol"><span class="hljs-symbol">dc:</span></span> ${CASSANDRA_LOCAL_DC:}
21. # Will throw an exception on startup if authentication fails.
22. username: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_USERNAME:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="32"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">password:</span></span> ${CASSANDRA_PASSWORD:}
23. keyspace: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_KEYSPACE:</span></span>zipkin}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="34"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># Max pooled connections per datacenter-local host.</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="35"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> max-<span class="hljs-symbol"><span class="hljs-symbol">connections:</span></span> ${CASSANDRA_MAX_CONNECTIONS:8}
24. # Ensuring that schema exists, if enabled tries to execute script /zipkin-cassandra-core/resources/cassandra-schema-cql3.txt.
25. ensure-schema: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_ENSURE_SCHEMA:</span></span><span class="hljs-literal"><span class="hljs-literal">true</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="38"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># 7 days in seconds</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="39"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> span-<span class="hljs-symbol"><span class="hljs-symbol">ttl:</span></span> ${CASSANDRA_SPAN_TTL:604800}
26. # 3 days in seconds
27. index-ttl: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_INDEX_TTL:</span></span><span class="hljs-number"><span class="hljs-number">259200</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="42"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># the maximum trace index metadata entries to cache</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="43"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> index-cache-<span class="hljs-symbol"><span class="hljs-symbol">max:</span></span> ${CASSANDRA_INDEX_CACHE_MAX:100000}
28. # how long to cache index metadata about a trace. 1 minute in seconds
29. index-cache-ttl: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_INDEX_CACHE_TTL:</span></span><span class="hljs-number"><span class="hljs-number">60</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="46"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># how many more index rows to fetch than the user-supplied query limit</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="47"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> index-fetch-<span class="hljs-symbol"><span class="hljs-symbol">multiplier:</span></span> ${CASSANDRA_INDEX_FETCH_MULTIPLIER:3}
30. # Using ssl for connection, rely on Keystore
31. use-ssl: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_USE_SSL:</span></span><span class="hljs-literal"><span class="hljs-literal">false</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="50"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">cassandra3:</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="51"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># Comma separated list of host addresses part of Cassandra cluster. Ports default to 9042 but you can also specify a custom port with 'host:port'.</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="52"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> contact-<span class="hljs-symbol"><span class="hljs-symbol">points:</span></span> ${CASSANDRA_CONTACT_POINTS:localhost}
32. # Name of the datacenter that will be considered “local” for latency load balancing. When unset, load-balancing is round-robin.
33. local-dc: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_LOCAL_DC:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="55"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># Will throw an exception on startup if authentication fails.</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="56"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">username:</span></span> ${CASSANDRA_USERNAME:}
34. password: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_PASSWORD:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="58"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">keyspace:</span></span> ${CASSANDRA_KEYSPACE:zipkin2}
35. # Max pooled connections per datacenter-local host.
36. max-connections: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_MAX_CONNECTIONS:</span></span><span class="hljs-number"><span class="hljs-number">8</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="61"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># Ensuring that schema exists, if enabled tries to execute script /zipkin2-schema.cql</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="62"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-keyword"><span class="hljs-keyword">ensure</span></span>-<span class="hljs-symbol"><span class="hljs-symbol">schema:</span></span> ${CASSANDRA_ENSURE_SCHEMA:true}
37. # how many more index rows to fetch than the user-supplied query limit
38. index-fetch-multiplier: ${<span class="hljs-symbol"><span class="hljs-symbol">CASSANDRA_INDEX_FETCH_MULTIPLIER:</span></span><span class="hljs-number"><span class="hljs-number">3</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="65"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment"><span class="hljs-comment"># Using ssl for connection, rely on Keystore</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="66"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> use-<span class="hljs-symbol"><span class="hljs-symbol">ssl:</span></span> ${CASSANDRA_USE_SSL:false}
39. elasticsearch:
40. # host is left unset intentionally, to defer the decision
41. hosts: ${<span class="hljs-symbol"><span class="hljs-symbol">ES_HOSTS:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="70"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">pipeline:</span></span> ${ES_PIPELINE:}
42. max-requests: ${<span class="hljs-symbol"><span class="hljs-symbol">ES_MAX_REQUESTS:</span></span><span class="hljs-number"><span class="hljs-number">64</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="72"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">timeout:</span></span> ${ES_TIMEOUT:10000}
43. index: ${<span class="hljs-symbol"><span class="hljs-symbol">ES_INDEX:</span></span>zipkin}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="74"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> date-<span class="hljs-symbol"><span class="hljs-symbol">separator:</span></span> ${ES_DATE_SEPARATOR:-}
44. index-shards: ${<span class="hljs-symbol"><span class="hljs-symbol">ES_INDEX_SHARDS:</span></span><span class="hljs-number"><span class="hljs-number">5</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="76"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> index-<span class="hljs-symbol"><span class="hljs-symbol">replicas:</span></span> ${ES_INDEX_REPLICAS:1}
45. username: ${<span class="hljs-symbol"><span class="hljs-symbol">ES_USERNAME:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="78"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">password:</span></span> ${ES_PASSWORD:}
46. http-logging: ${<span class="hljs-symbol"><span class="hljs-symbol">ES_HTTP_LOGGING:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="80"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> legacy-reads-<span class="hljs-symbol"><span class="hljs-symbol">enabled:</span></span> ${ES_LEGACY_READS_ENABLED:true}
47. mysql:
48. host: ${<span class="hljs-symbol"><span class="hljs-symbol">MYSQL_HOST:</span></span>localhost}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="83"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">port:</span></span> ${MYSQL_TCP_PORT:3306}
49. username: ${<span class="hljs-symbol"><span class="hljs-symbol">MYSQL_USER:</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="85"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">password:</span></span> ${MYSQL_PASS:}
50. db: ${<span class="hljs-symbol"><span class="hljs-symbol">MYSQL_DB:</span></span>zipkin}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="87"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> max-<span class="hljs-symbol"><span class="hljs-symbol">active:</span></span> ${MYSQL_MAX_CONNECTIONS:10}
51. use-ssl: ${<span class="hljs-symbol"><span class="hljs-symbol">MYSQL_USE_SSL:</span></span><span class="hljs-literal"><span class="hljs-literal">false</span></span>}</div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="89"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">ui:</span></span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="90"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-symbol"><span class="hljs-symbol">enabled:</span></span> ${QUERY_ENABLED:true}
52. ## Values below here are mapped to ZipkinUiProperties, served as /config.json
53. # Default limit for Find Traces
54. query-limit: 10
55. # The value here becomes a label in the top-right corner
56. environment:
57. # Default duration to look back when finding traces.
58. # Affects the “Start time” element in the UI. 1 hour in millis
59. default-lookback: 3600000
60. # When false, disables the “find a trace” screen
61. search-enabled: ${SEARCH_ENABLED:true}
62. # Which sites this Zipkin UI covers. Regex syntax. (e.g. http:\/\/example.com\/.*)
63. # Multiple sites can be specified, e.g.
64. # - .*example1.com
65. # - .*example2.com
66. # Default is “match all websites”
67. instrumented: .*
68. # URL placed into the <base> tag in the HTML
69. base-path: /zipkin

从它的配置文件可以看出，storage 默认采用的是内存存储，所以我们要设置 zipkin.storage.type=mysql，除此之外还要设置 zipkin.storage.mysql.host、port、username、password、db 等

下面贴出我的启动命令：

1. java -jar zipkin.jar --zipkin.collector.rabbitmq.addresses=localhost --zipkin.storage.type=mysql
2. --zipkin.storage.mysql.host=localhost --zipkin.storage.mysql.port=3306 --zipkin.storage.mysql.username=root
3. --zipkin.storage.mysql.password=mysql --zipkin.storage.mysql.db=zipkin

大家可以根据自己的数据库信息，修改相关配置即可

（三）验证

至于 Zipkin Client 端，是不需要相关修改的，按照上面命令启动 zipkin 后，访问 http://localhost:8481/service1，查看数据库信息，表 zipkin_annotations 和表 zipkin_spans 中已经数据存储了

表 zipkin_annotations ：

表 zipkin_spans ：

表中所存储的信息我们已经非常熟悉，之前分析的内容都可以在这两张表中体现出来。

从 GitHub 的官方配置文件中，我们可以看到，Zipkin 在存储方面除了对 Mysql 有扩展组件之外，还实现了对 CassCassandra 和 ElasElasticSearch 的支持扩展，具体的整合方式与 Mysql 的整合类似。

源码下载：https://github.com/shmilyah/spring-cloud-componets

转载自：https://blog.csdn.net/hubo_88/article/details/80890461

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