skywalking集成nacos动态配置

修改config/application.yml

configuration:
  selector: ${
    SW_CONFIGURATION:nacos}
  nacos:
    # Nacos Server Host
    serverAddr: ${
    SW_CONFIG_NACOS_SERVER_ADDR:192.168.229.130}
    # Nacos Server Port
    port: ${
    SW_CONFIG_NACOS_SERVER_PORT:8848}
    # Nacos Configuration Group
    group: ${
    SW_CONFIG_NACOS_SERVER_GROUP:skywalking}
    # Nacos Configuration namespace
    namespace: ${
    SW_CONFIG_NACOS_SERVER_NAMESPACE:db20ccfd-db01-47bd-a4d3-393b4e7df260}
    # Unit seconds, sync period. Default fetch every 60 seconds.
    period: ${
    SW_CONFIG_NACOS_PERIOD:10}
    # Nacos auth username
    username: ${
    SW_CONFIG_NACOS_USERNAME:"nacos"}
    password: ${
    SW_CONFIG_NACOS_PASSWORD:"nacos"}

参考：https://skywalking.apache.org/docs/main/v9.1.0/en/setup/backend/dynamic-config-nacos/

添加nacos配置

比如：
dataid = configuration-discovery.default.agentConfigurations
group = skywalking
内容：

configurations:
  demo-application:
    agent.trace.ignore_path: "**/actuator/**"

保存以后，在skywalking的控制台会打印如下输出：

Nacos config changed: configuration-discovery.default.agentConfigurations: configurations:
  demo-application:
    agent.trace.ignore_path: "**/actuator/**"

支持的配置项

参考：https://skywalking.apache.org/docs/main/v9.1.0/en/setup/backend/dynamic-config/

key	Value Description	Value Format Example
agent-analyzer.default.slowDBAccessThreshold	Thresholds of slow Database statement. Overrides agent-analyzer/default/slowDBAccessThreshold of application.yml.	default:200,mongodb:50
agent-analyzer.default.uninstrumentedGateways	The uninstrumented gateways. Overrides gateways.yml	Same as gateways.yml
alarm.default.alarm-settings	The alarm settings. Overrides alarm-settings.yml	Same as alarm-settings.yml
core.default.apdexThreshold	The apdex threshold settings. Overrides service-apdex-threshold.yml	Same as service-apdex-threshold.yml
core.default.endpoint-name-grouping	The endpoint name grouping setting. Overrides endpoint-name-grouping.yml	Same as endpoint-name-grouping.yml
core.default.log4j-xml	The log4j xml configuration. Overrides log4j2.xml	Same as log4j2.xml
agent-analyzer.default.traceSamplingPolicy	The sampling policy for default and service dimension, override trace-sampling-policy-settings.yml	same as trace-sampling-policy-settings.yml
configuration-discovery.default.agentConfigurations	The ConfigurationDiscovery settings.	See configuration-discovery.md

configuration-discovery.default.agentConfigurations

参考：https://github.com/apache/skywalking-java/blob/20fb8c81b3da76ba6628d34c12d23d3d45c973ef/docs/en/setup/service-agent/java-agent/configuration-discovery.md

配置内容的格式

configurations:
  //service name
  serviceA:
    // Configurations of service A
    // Key and Value are determined by the agent side.
    // Check the agent setup doc for all available configurations.
    key1: value1
    key2: value2
    ...
  serviceB:

支持的key

Key
agent.sample_n_per_3_secs
agent.ignore_suffix
agent.trace.ignore_path
agent.span_limit_per_segment

动态配置的用处

比如：可以动态调整需要ignore的endpoint