【raft】raft-grpc-example 构建与运行

本文通过raft-grpc-example,详细介绍了如何构建和运行一个基于gRPC的Raft分布式一致性算法实例,涵盖了从rpc接口设计到具体实现的各个部分,包括rpc1、rpc2、rpc3的功能讲解,以及admin和hammer工具的使用。

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rpc1

D:\Code\GaoKeYong\RPC\livecdn\raft\raft-grpc-example\tmp


PS D:\Code\GaoKeYong\RPC\livecdn\raft\raft-grpc-example\tmp> cd ..
PS D:\Code\GaoKeYong\RPC\livecdn\raft\raft-grpc-example> 
root@ecm-e00f:/yunxiang/data/nacos/conf# vim application.properties root@ecm-e00f:/yunxiang/data/nacos/conf# cat application.properties # # Copyright 1999-2021 Alibaba Group Holding Ltd. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # #*************** Spring Boot Related Configurations ***************# ### Default web context path: server.servlet.contextPath=/nacos ### Include message field server.error.include-message=ALWAYS ### Default web server port: server.port=8848 #*************** Network Related Configurations ***************# ### If prefer hostname over ip for Nacos server addresses in cluster.conf: # nacos.inetutils.prefer-hostname-over-ip=false ### Specify local server's IP: # nacos.inetutils.ip-address= #*************** Config Module Related Configurations ***************# ### If use MySQL as datasource: ### Deprecated configuration property, it is recommended to use `spring.sql.init.platform` replaced. spring.sql.init.platform=mariadb ### Count of DB: db.num=1 ### Connect URL of DB: db.url.0=jdbc:mariadb://127.0.0.1:3306/transport_config?useUnicode=true&characterEncoding=utf8&serverTimezone=UTC&useSSL=false db.user.0=transport_config_user db.password.0=Yx_sec_Db@911^38 db.driver.0=org.mariadb.jdbc.Driver ### Connection pool configuration: hikariCP db.pool.config.connectionTimeout=30000 db.pool.config.validationTimeout=10000 db.pool.config.maximumPoolSize=20 db.pool.config.minimumIdle=2 ### the maximum retry times for push nacos.config.push.maxRetryTime=50 #*************** Naming Module Related Configurations ***************# ### If enable data warmup. If set to false, the server would accept request without local data preparation: # nacos.naming.data.warmup=true ### If enable the instance auto expiration, kind like of health check of instance: # nacos.naming.expireInstance=true nacos.naming.empty-service.auto-clean=true nacos.naming.empty-service.clean.initial-delay-ms=50000 nacos.naming.empty-service.clean.period-time-ms=30000 ### Add in 2.0.0 ### The interval to clean empty service, unit: milliseconds. # nacos.naming.clean.empty-service.interval=60000 ### The expired time to clean empty service, unit: milliseconds. # nacos.naming.clean.empty-service.expired-time=60000 ### The interval to clean expired metadata, unit: milliseconds. # nacos.naming.clean.expired-metadata.interval=5000 ### The expired time to clean metadata, unit: milliseconds. # nacos.naming.clean.expired-metadata.expired-time=60000 ### The delay time before push task to execute from service changed, unit: milliseconds. # nacos.naming.push.pushTaskDelay=500 ### The timeout for push task execute, unit: milliseconds. # nacos.naming.push.pushTaskTimeout=5000 ### The delay time for retrying failed push task, unit: milliseconds. # nacos.naming.push.pushTaskRetryDelay=1000 ### Since 2.0.3 ### The expired time for inactive client, unit: milliseconds. # nacos.naming.client.expired.time=180000 #*************** CMDB Module Related Configurations ***************# ### The interval to dump external CMDB in seconds: # nacos.cmdb.dumpTaskInterval=3600 ### The interval of polling data change event in seconds: # nacos.cmdb.eventTaskInterval=10 ### The interval of loading labels in seconds: # nacos.cmdb.labelTaskInterval=300 ### If turn on data loading task: # nacos.cmdb.loadDataAtStart=false #***********Metrics for tomcat **************************# server.tomcat.mbeanregistry.enabled=true #***********Expose prometheus and health **************************# #management.endpoints.web.exposure.include=prometheus,health ### Metrics for elastic search management.metrics.export.elastic.enabled=false #management.metrics.export.elastic.host=http://localhost:9200 ### Metrics for influx management.metrics.export.influx.enabled=false #management.metrics.export.influx.db=springboot #management.metrics.export.influx.uri=http://localhost:8086 #management.metrics.export.influx.auto-create-db=true #management.metrics.export.influx.consistency=one #management.metrics.export.influx.compressed=true #*************** Access Log Related Configurations ***************# ### If turn on the access log: server.tomcat.accesslog.enabled=true ### file name pattern, one file per hour server.tomcat.accesslog.rotate=true server.tomcat.accesslog.file-date-format=.yyyy-MM-dd-HH ### The access log pattern: server.tomcat.accesslog.pattern=%h %l %u %t "%r" %s %b %D %{User-Agent}i %{Request-Source}i ### The directory of access log: server.tomcat.basedir=file:. #*************** Access Control Related Configurations ***************# ### If enable spring security, this option is deprecated in 1.2.0: #spring.security.enabled=false ### The ignore urls of auth nacos.security.ignore.urls=/,/error,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-ui/public/**,/v1/auth/**,/v1/console/health/**,/actuator/**,/v1/console/server/** ### The auth system to use, currently only 'nacos' and 'ldap' is supported: nacos.core.auth.system.type=nacos ### If turn on auth system: nacos.core.auth.enabled=false ### Turn on/off caching of auth information. By turning on this switch, the update of auth information would have a 15 seconds delay. nacos.core.auth.caching.enabled=true ### Since 1.4.1, Turn on/off white auth for user-agent: nacos-server, only for upgrade from old version. nacos.core.auth.enable.userAgentAuthWhite=false ### Since 1.4.1, worked when nacos.core.auth.enabled=true and nacos.core.auth.enable.userAgentAuthWhite=false. ### The two properties is the white list for auth and used by identity the request from other server. nacos.core.auth.server.identity.key= nacos.core.auth.server.identity.value= ### worked when nacos.core.auth.system.type=nacos ### The token expiration in seconds: nacos.core.auth.plugin.nacos.token.cache.enable=false nacos.core.auth.plugin.nacos.token.expire.seconds=18000 ### The default token (Base64 String): nacos.core.auth.plugin.nacos.token.secret.key= ### worked when nacos.core.auth.system.type=ldap,{0} is Placeholder,replace login username #nacos.core.auth.ldap.url=ldap://localhost:389 #nacos.core.auth.ldap.basedc=dc=example,dc=org #nacos.core.auth.ldap.userDn=cn=admin,${nacos.core.auth.ldap.basedc} #nacos.core.auth.ldap.password=admin #nacos.core.auth.ldap.userdn=cn={0},dc=example,dc=org #nacos.core.auth.ldap.filter.prefix=uid #nacos.core.auth.ldap.case.sensitive=true #nacos.core.auth.ldap.ignore.partial.result.exception=false #*************** Control Plugin Related Configurations ***************# # plugin type #nacos.plugin.control.manager.type=nacos # local control rule storage dir, default ${nacos.home}/data/connection and ${nacos.home}/data/tps #nacos.plugin.control.rule.local.basedir=${nacos.home} # external control rule storage type, if exist #nacos.plugin.control.rule.external.storage= #*************** Config Change Plugin Related Configurations ***************# # webhook #nacos.core.config.plugin.webhook.enabled=false # It is recommended to use EB https://help.aliyun.com/document_detail/413974.html #nacos.core.config.plugin.webhook.url=http://localhost:8080/webhook/send?token=*** # The content push max capacity ,byte #nacos.core.config.plugin.webhook.contentMaxCapacity=102400 # whitelist #nacos.core.config.plugin.whitelist.enabled=false # The import file suffixs #nacos.core.config.plugin.whitelist.suffixs=xml,text,properties,yaml,html # fileformatcheck,which validate the import file of type and content #nacos.core.config.plugin.fileformatcheck.enabled=false #*************** Istio Related Configurations ***************# ### If turn on the MCP server: nacos.istio.mcp.server.enabled=false #*************** Core Related Configurations ***************# ### set the WorkerID manually # nacos.core.snowflake.worker-id= ### Member-MetaData # nacos.core.member.meta.site= # nacos.core.member.meta.adweight= # nacos.core.member.meta.weight= ### MemberLookup ### Addressing pattern category, If set, the priority is highest # nacos.core.member.lookup.type=[file,address-server] ## Set the cluster list with a configuration file or command-line argument # nacos.member.list=192.168.16.101:8847?raft_port=8807,192.168.16.101?raft_port=8808,192.168.16.101:8849?raft_port=8809 ## for AddressServerMemberLookup # Maximum number of retries to query the address server upon initialization # nacos.core.address-server.retry=5 ## Server domain name address of [address-server] mode # address.server.domain=jmenv.tbsite.net ## Server port of [address-server] mode # address.server.port=8080 ## Request address of [address-server] mode # address.server.url=/nacos/serverlist #*************** JRaft Related Configurations ***************# ### Sets the Raft cluster election timeout, default value is 5 second # nacos.core.protocol.raft.data.election_timeout_ms=5000 ### Sets the amount of time the Raft snapshot will execute periodically, default is 30 minute # nacos.core.protocol.raft.data.snapshot_interval_secs=30 ### raft internal worker threads # nacos.core.protocol.raft.data.core_thread_num=8 ### Number of threads required for raft business request processing # nacos.core.protocol.raft.data.cli_service_thread_num=4 ### raft linear read strategy. Safe linear reads are used by default, that is, the Leader tenure is confirmed by heartbeat # nacos.core.protocol.raft.data.read_index_type=ReadOnlySafe ### rpc request timeout, default 5 seconds # nacos.core.protocol.raft.data.rpc_request_timeout_ms=5000 #*************** Distro Related Configurations ***************# ### Distro data sync delay time, when sync task delayed, task will be merged for same data key. Default 1 second. # nacos.core.protocol.distro.data.sync.delayMs=1000 ### Distro data sync timeout for one sync data, default 3 seconds. # nacos.core.protocol.distro.data.sync.timeoutMs=3000 ### Distro data sync retry delay time when sync data failed or timeout, same behavior with delayMs, default 3 seconds. # nacos.core.protocol.distro.data.sync.retryDelayMs=3000 ### Distro data verify interval time, verify synced data whether expired for a interval. Default 5 seconds. # nacos.core.protocol.distro.data.verify.intervalMs=5000 ### Distro data verify timeout for one verify, default 3 seconds. # nacos.core.protocol.distro.data.verify.timeoutMs=3000 ### Distro data load retry delay when load snapshot data failed, default 30 seconds. # nacos.core.protocol.distro.data.load.retryDelayMs=30000 ### enable to support prometheus service discovery #nacos.prometheus.metrics.enabled=true ### Since 2.3 #*************** Grpc Configurations ***************# ## sdk grpc(between nacos server and client) configuration ## Sets the maximum message size allowed to be received on the server. #nacos.remote.server.grpc.sdk.max-inbound-message-size=10485760 ## Sets the time(milliseconds) without read activity before sending a keepalive ping. The typical default is two hours. #nacos.remote.server.grpc.sdk.keep-alive-time=7200000 ## Sets a time(milliseconds) waiting for read activity after sending a keepalive ping. Defaults to 20 seconds. #nacos.remote.server.grpc.sdk.keep-alive-timeout=20000 ## Sets a time(milliseconds) that specify the most aggressive keep-alive time clients are permitted to configure. The typical default is 5 minutes #nacos.remote.server.grpc.sdk.permit-keep-alive-time=300000 ## cluster grpc(inside the nacos server) configuration #nacos.remote.server.grpc.cluster.max-inbound-message-size=10485760 ## Sets the time(milliseconds) without read activity before sending a keepalive ping. The typical default is two hours. #nacos.remote.server.grpc.cluster.keep-alive-time=7200000 ## Sets a time(milliseconds) waiting for read activity after sending a keepalive ping. Defaults to 20 seconds. #nacos.remote.server.grpc.cluster.keep-alive-timeout=20000 ## Sets a time(milliseconds) that specify the most aggressive keep-alive time clients are permitted to configure. The typical default is 5 minutes #nacos.remote.server.grpc.cluster.permit-keep-alive-time=300000 ## open nacos default console ui #nacos.console.ui.enabled=true
07-08
根据提供的 `application.properties` 文件,Nacos 的数据库配置已正确设置为 MariaDB(`spring.sql.init.platform=mariadb` 和 `db.driver.0=org.mariadb.jdbc.Driver`),但启动时仍报错 **`Driver com.mysql.cj.jdbc.Driver claims to not accept jdbcUrl`**。以下是可能的原因和解决方案: --- ### **问题分析** 1. **驱动类冲突** - 尽管配置了 MariaDB 驱动,但实际加载的可能是 MySQL 驱动(`com.mysql.cj.jdbc.Driver`),导致拒绝 MariaDB 的 JDBC URL。 - 可能原因: - `nacos-server.jar` 或依赖中混入了 `mysql-connector-java`。 - 动态数据源初始化时未正确读取 `db.driver.0` 配置。 2. **密码特殊字符问题** - 密码 `Yx_sec_Db@911^38` 中的 `@` 和 `^` 可能在连接时被错误解析。 3. **数据库服务不可达** - MariaDB 服务未运行,或 `127.0.0.1:3306` 不可访问。 --- ### **解决方案** #### 1. **检查依赖冲突** - **确认驱动 JAR 文件**: 检查 `nacos-server.jar` 同级目录的 `plugins/` 或 `lib/` 下是否存在 `mysql-connector-java`。如果存在,需移除: ```bash rm -f /yunxiang/data/nacos/plugins/mysql/mysql-connector-java-*.jar ``` - **验证类加载路径**: 在启动命令中添加调试参数,查看实际加载的驱动类: ```bash java -verbose:class -jar nacos-server.jar | grep Driver ``` #### 2. **显式指定驱动类** 在 `application.properties` 中强制指定驱动类(避免动态数据源初始化时回退到默认值): ```properties # 显式指定驱动类(即使已配置 db.driver.0) spring.datasource.driver-class-name=org.mariadb.jdbc.Driver ``` #### 3. **处理密码特殊字符** - **URL 编码密码**: 将 `@` 替换为 `%40`,`^` 替换为 `%5E`: ```properties db.password.0=Yx_sec_Db%40911%5E38 ``` - **使用引号包裹密码**: ```properties db.password.0="Yx_sec_Db@911^38" ``` #### 4. **验证数据库连接** - **手动测试连接**: 使用 `mariadb` 客户端或 `telnet` 验证数据库是否可达: ```bash mariadb -h 127.0.0.1 -P 3306 -u transport_config_user -p'Yx_sec_Db@911^38' transport_config telnet 127.0.0.1 3306 ``` - **检查数据库权限**: 确保用户有权限访问 `transport_config` 数据库: ```sql GRANT ALL PRIVILEGES ON transport_config.* TO 'transport_config_user'@'%'; FLUSH PRIVILEGES; ``` #### 5. **启用调试日志** 在 `application.properties` 中增加日志级别,定位具体错误: ```properties # 启用 Spring 和数据库调试日志 logging.level.org.springframework=DEBUG logging.level.com.zaxxer.hikari=DEBUG logging.level.com.alibaba.nacos=DEBUG ``` --- ### **其他建议** 1. **使用最新驱动版本** 确保 MariaDB 驱动版本兼容(如 `mariadb-java-client:3.1.4`)。 2. **简化配置测试** 暂时注释掉所有非关键配置,仅保留数据库相关项,逐步排查问题。 3. **检查 Nacos 版本兼容性** Nacos 2.4.0 对 MariaDB 的支持可能需要特定驱动版本,参考[官方文档](https://nacos.io/zh-cn/docs/v2/guide/admin/cluster-mode-quick-start.html)。 --- ### **根本原因总结** 错误的核心是 **驱动类加载冲突**,可能由以下原因导致: 1. 依赖中混入了 `mysql-connector-java`,导致 MariaDB 驱动未被正确加载。 2. 动态数据源初始化时未正确读取 `db.driver.0` 配置。 3. 密码中的特殊字符在连接字符串中未被正确处理。 ---
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