These two articles would be a good reference:
The second article above mentions the ELK stack. This is one option of several that allows the aggregation of logs, APM data, and other potentially useful features (e.g. monitoring and alerting). The ELK stack is specifically ElasticSearch, Kibana, and the log/data aggregation agent used to get the data. ELK is open-source and can be deployed in your cluster (assuming kubernetes) or they also have a paid cloud offering. There are other commercial offerings as well - DataDog, DynaTrace, NewRelic, etc.