如何解决如何配置AWS CDK ApplicationLoadBalancedFargateService以使用Firelens和Firebit记录已解析的JSON行
当我使用Firelens日志驱动程序创建ApplicationLoadBalancedFargateService时,应用程序将JSON行写为日志消息,例如,将net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder与Logback一起使用时,日志消息将显示在我的日志存储库中(例如Sumo Logic),作为转义字符串,例如:
如何获取日志消息以另存为已解析的JSON?
解决方法
扫描CDK源代码后,浏览几个相关参考(我将在其中提供链接以帮助引导适当的流量),然后使用cdk diff
直到唯一的更改是启用json解析,我才能够进行如以下代码所示工作。此处的关键是使用addFirelensLogRouter
方法及其中包含的Firelens配置。
TaskDefinition
代码不会自动创建一个LogRouter
容器,如果任务定义中已经包含一个容器,这就是我们可以覆盖默认行为的原因。
protected _createFargateService() {
const logDriver = LogDrivers.firelens({
options: {
Name: 'http',Host: this._props.containerLogging.endpoint,URI: this._props.containerLogging.uri,Port: '443',tls: 'on','tls.verify': 'off',Format: 'json_lines'
}
});
const fargateService = new ApplicationLoadBalancedFargateService(this,this._props.serviceName,{
cluster: this._accountEnvironmentLookups.getComputeCluster(),cpu: this._props.cpu,// Default is 256
desiredCount: this._props.desiredCount,// Default is 1
taskImageOptions: {
image: ContainerImage.fromEcrRepository(this._props.serviceRepository,this._props.imageVersion),environment: this._props.environment,containerPort: this._props.containerPort,logDriver
},memoryLimitMiB: this._props.memoryLimitMiB,// Default is 512
publicLoadBalancer: this._props.publicLoadBalancer,// Default is false
domainName: this._props.domainName,domainZone: !!this._props.hostedZoneDomain ? HostedZone.fromLookup(this,'ZoneFromLookup',{
domainName: this._props.hostedZoneDomain
}) : undefined,certificate: !!this._props.certificateArn ? Certificate.fromCertificateArn(this,'CertificateFromArn',this._props.certificateArn) : undefined,serviceName: `${this._props.accountShortName}-${this._props.deploymentEnvironment}-${this._props.serviceName}`,// The new ARN and resource ID format must be enabled to work with ECS managed tags.
//enableECSManagedTags: true,//propagateTags: PropagatedTagSource.SERVICE,// CloudMap properties cannot be set from a stack separate from the stack where the cluster is created.
// see https://github.com/aws/aws-cdk/issues/7825
});
if (this._props.logMessagesAreJsonLines) {
// The default log driver setup doesn't enable json line parsing.
const firelensLogRouter = fargateService.service.taskDefinition.addFirelensLogRouter('log-router',{
// Figured out how get the default fluent bit ECR image from here https://github.com/aws/aws-cdk/blob/60c782fe173449ebf912f509de7db6df89985915/packages/%40aws-cdk/aws-ecs/lib/base/task-definition.ts#L509
image: obtainDefaultFluentBitECRImage(fargateService.service.taskDefinition,fargateService.service.taskDefinition.defaultContainer?.logDriverConfig),essential: true,firelensConfig: {
type: FirelensLogRouterType.FLUENTBIT,options: {
enableECSLogMetadata: true,configFileType: FirelensConfigFileType.FILE,// This enables parsing of log messages that are json lines
configFileValue: '/fluent-bit/configs/parse-json.conf'
}
},memoryReservationMiB: 50,logging: new AwsLogDriver({streamPrefix: 'firelens'})
});
firelensLogRouter.logDriverConfig;
}
fargateService.targetGroup.configureHealthCheck({
path: this._props.healthUrlPath,port: this._props.containerPort.toString(),interval: Duration.seconds(120),unhealthyThresholdCount: 5
});
const scalableTaskCount = fargateService.service.autoScaleTaskCount({
minCapacity: this._props.desiredCount,maxCapacity: this._props.maxCapacity
});
scalableTaskCount.scaleOnCpuUtilization(`ScaleOnCpuUtilization${this._props.cpuTargetUtilization}`,{
targetUtilizationPercent: this._props.cpuTargetUtilization
});
scalableTaskCount.scaleOnMemoryUtilization(`ScaleOnMemoryUtilization${this._props.memoryTargetUtilization}`,{
targetUtilizationPercent: this._props.memoryTargetUtilization
});
this.fargateService = fargateService;
}
资源:
- 我第一次发现它是可能的。 https://github.com/aws-samples/amazon-ecs-firelens-examples/tree/master/examples/fluent-bit/parse-json
- 我如何发现CDK https://github.com/aws/aws-cdk/pull/6322成为可能
- 从AWS服务的观点https://docs.aws.amazon.com/AmazonECS/latest/userguide/using_firelens.html理解它
- 缩小CDK源中的位置。 https://docs.aws.amazon.com/cdk/api/latest/docs/@aws-cdk_aws-ecs.FirelensLogRouter.html
- 最终我降落在这里并找出了https://github.com/aws/aws-cdk/blob/60c782fe173449ebf912f509de7db6df89985915/packages/%40aws-cdk/aws-ecs/lib/base/task-definition.ts#L509
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