log-agent

log-agent is an add-on based on Fluent Bit and OpenTelemetry for cloud native logging. It supports CRD-based log collection policies, as well as collects and forwards standard output logs, container file logs, node logs, and Kubernetes events of containers in a cluster.

The core components of log-agent include fluent-bit, cop-logs, log-operator, and otel-collector.

fluent-bit: indicates the log collector, which is installed on each node as a DaemonSet.
cop-logs: generates and updates configuration files on the collection side.
log-operator: parses and updates log collection rules.
otel-collector: forwards logs collected by fluent-bit to LTS in a centralized manner.

Resource Quota Requirements of Different Specifications

Ensure that the cluster has sufficient CPU and memory resources for scheduling when installing log-agent. Table 1 describes the resource quota requirements of different log-agent specifications.

**Table 1** Resource quota requirements of different specifications
Add-on Specification	Container	CPU Quota		Memory Quota
Small specifications (1 pod)	fluent-bit	Request: 100 m	Limit: 500 m	Request: 200 MiB	Limit: 500 MiB
	cop-logs	Request: 100 m	Limit: 1	Request: 100 MiB	Limit: 500 MiB
	log-operator	Request: 100 m	Limit: 500 m	Request: 100 MiB	Limit: 500 MiB
	otel-collector	Request: 200 m	Limit: 1	Request: 1 GiB	Limit: 2 GiB
Large specifications (2 pods)	fluent-bit	Request: 100 m	Limit: 500 m	Request: 200 MiB	Limit: 500 MiB
	cop-logs	Request: 100 m	Limit: 1	Request: 100 MiB	Limit: 500 MiB
	log-operator	Request: 100 m	Limit: 500 m	Request: 100 MiB	Limit: 500 MiB
	otel-collector	Request: 200 m	Limit: 1	Request: 1 GiB	Limit: 2 GiB