cAdvisor介绍
1. cAdvisor简介
cAdvisor对Node机器上的资源及容器进行实时监控和性能数据采集,包括CPU使用情况、内存使用情况、网络吞吐量及文件系统使用情况,cAdvisor集成在Kubelet中,当kubelet启动时会自动启动cAdvisor,即一个cAdvisor仅对一台Node机器进行监控。kubelet的启动参数--cadvisor-port可以定义cAdvisor对外提供服务的端口,默认为4194。可以通过浏览器<Node_IP:port>访问。项目主页:http://github.com/google/cadvisor。
2. cAdvisor结构图
3. Metrics
分类 | 字段 | 描述 |
---|---|---|
cpu | cpu_usage_total | |
cpu_usage_system | ||
cpu_usage_user | ||
cpu_usage_per_cpu | ||
load_average | Smoothed average of number of runnable threads x 1000 | |
memory | memory_usage | Memory Usage |
memory_working_set | Working set size | |
network | rx_bytes | Cumulative count of bytes received |
rx_errors | Cumulative count of receive errors encountered | |
tx_bytes | Cumulative count of bytes transmitted | |
tx_errors | Cumulative count of transmit errors encountered | |
filesystem | fs_device | Filesystem device |
fs_limit | Filesystem limit | |
fs_usage | Filesystem usage |
4. cAdvisor源码
4.1. cAdvisor入口函数
cadvisor.go
核心代码:
4.2. cAdvisor Client的使用
4.2.1 client定义
cadvisor/client/client.go
4.2.2. client方法
1)MachineInfo
2)ContainerInfo
3)DockerContainer
4)AllDockerContainers
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.
最后修改 May 23, 2023: add kube-promethus-stack (5581d4c)