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TIPS之 Kubernetes 外部流量引入

Kubernetes 外部流量引入: ClusterIp、NodePort、LoadBalancer 和 Ingress

Kubernetes 外部流量引入: ClusterIp、NodePort、LoadBalancer 和 Ingress 背景今天，我被问到了一个从测试初期遇到的最常见问题之一开始

Posted by 董江 on Monday, May 6, 2024

GPU 共享/虚拟化方案: 故障隔离、显存隔离、算力隔离

GPU 共享/虚拟化方案: 故障隔离、显存隔离、算力隔离

GPU 共享/虚拟化方案: 故障隔离、显存隔离、算力隔离 AI 任务一般都会用到 GPU，这类资源相对 CPU/内存来说往往更加昂贵，目前实现混部的开源方案有

Posted by 董江 on Friday, April 26, 2024

TIPS之 Kubernetes descheduler使用方式

Kubernetes descheduler使用方式

Kubernetes descheduler使用方式 descheduler是对于现有的 kube-scheduler 精细化调度丰富. de-scheduler 当业务长期运行后, 出现warning到一定情况，通过预

Posted by 董江 on Wednesday, December 6, 2023

TIPS之 Kubernetes Pod动态mount nfs方式

Kubernetes Pod动态mount nfs方式

Kubernetes Pod动态mount nfs方式背景为Pod 挂在一个nfs目录, 临时处理数据使用。确保pod不重启。验证方式准备 nfs-server [root@xxxxx /var/lib/paascontainer/nfs]# exportfs -s /var/lib/paascontainer/nfs *(sync,wdelay,hide,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash) [root@xxxxx /var/lib/paascontainer/nfs]# showmount -e 172.16.0.8 Export list

Posted by 董江 on Tuesday, October 17, 2023

TIPS之 Kubernetes kubelet 与 apiserver 断连后，依旧使用关闭连接

Kubernetes kubelet 与 apiserver 断连后，依旧使用关闭连接

Kubernetes kubelet 与 apiserver 断连后，依旧使用关闭连接现象表现是：通过kubelet 报错，一段时间后节点NotReady。日志： E0906 02:03:08.585672 392662 reflector.go:123] object-"089f93c2"/"a697eaa005a-4b60b0": Failed to list *v1.ConfigMap: Get https://127.0.0.1:6443/api/v1/namespaces/089f93c2/configmaps?fieldSelector=metadata.name%3Da697eaa005a-4b60b0&limit=500&resourceVersion=0: read tcp 127.0.0.1:62060->127.0.0.1:6443: use of closed

Posted by 董江 on Tuesday, September 19, 2023

TIPS之 Kubernetes client-go 常用配置

Kubernetes client-go 常用配置

Kubernetes client-go 常用配置第一篇: Kubernetes client-go使用方式 client-go config 配置 type Config struct { // Host must be a host string, a host:port pair, or a URL to the base of the apiserver. // If a URL is given then the (optional) Path of that URL represents a prefix that must //

Posted by 董江 on Monday, September 18, 2023

TIPS之 Kubernetes APIServer 异常504 GatewayTimeout

Kubernetes APIServer 异常504 GatewayTimeout

Kubernetes APIServer 异常 504 GatewayTimeout 问题一： Kubernetes APIServer 503 logging error output: service unavailable metrics.k8s.io/v1beta1 api-resource 不存在问题 I0908 17:58:06.013828 1 httplog.go:89] "HTTP" verb="GET" URI="/apis/metrics.k8s.io/v1beta1?timeout=32s" latency="511.066µs" userAgent="kubectl/v1.21.5 (linux/amd64) kubernetes/83c85a6" srcIP="10.253.101.202:56436" resp=503 statusStack=" goroutine 178079822 [running]: .... "

Posted by 董江 on Monday, September 11, 2023

运行时之 nydus vs estargz image format对比

nydus vs estargz image format对比

nydus vs estargz image format对比背景 OCIv2 vs OCIv1 OCIv1是开源容器规定的镜像格式标准(image format spec). OCIv2是解决OCIv1部分问题后，解决的镜像标准

Posted by 董江 on Monday, August 28, 2023