Dynamic Configuration Nacos Implementation

Nacos 2.x is also supported as a Dynamic Configuration Center (DCC).

To use it, please configure it as follows:

configuration:
  selector: ${SW_CONFIGURATION:nacos}
  nacos:
    # Nacos Server Host
    serverAddr: ${SW_CONFIG_NACOS_SERVER_ADDR:127.0.0.1}
    # 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:}
    # Unit seconds, sync period. Default fetch every 60 seconds.
    period: ${SW_CONFIG_NACOS_PERIOD:60}
    # the name of current cluster, set the name if you want to upstream system known.
    clusterName: ${SW_CONFIG_NACOS_CLUSTER_NAME:default}

Config Storage

Single Config

Data Id	Group	Config Value
configKey	{group}	configValue

e.g. The config is:

{agent-analyzer.default.slowDBAccessThreshold}:{default:200,mongodb:50}

If group = skywalking, the config in Nacos is:

Data Id	Group	Config Value
agent-analyzer.default.slowDBAccessThreshold	skywalking	default:200,mongodb:50

Group Config

Data Id	Group	Config Value	Config Type
configKey	{group}	subItemkey1 subItemkey2 …	TEXT
subItemkey1	{group}	subItemValue1
subItemkey2	{group}	subItemValue2
…	…	…

Notice: If you add/remove a subItem, you need to add/remove the subItemKey from the group to which the subItem belongs:

Data Id	Group	Config Value	Config Type
configKey	{group}	subItemkey1 subItemkey2 …	TEXT

We separate subItemkeys by \n or \r\n, trim leading and trailing whitespace; if you set the config by Nacos UI, each subItemkey should be in a new line:

subItemValue1
subItemValue2
...

If you set the config by API, each subItemkey should be separated by \n or \r\n:

configService.publishConfig("test-module.default.testKeyGroup", "skywalking", "subItemkey1\n subItemkey2"));