胡伟煌

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controller-manager 源码思维导图

源码整体结构图 var isMobile = navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windo......

Posted by 胡伟煌 on 2021-06-23

kube-scheduler 源码思维导图

源码整体结构图 var isMobile = navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windo......

Posted by 胡伟煌 on 2021-06-23

kubelet 源码思维导图

源码整体结构图 var isMobile = navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windo......

Posted by 胡伟煌 on 2021-06-23

使用etcdadm部署Etcd集群

1. 安装etcdadm 在Releases · kubernetes-sigs/etcdadm · GitHub中选择需要部署的版本，示例如下： 123wget https://github.com/kubernetes-sigs/etcdadm/releases/download/v0.1.5/etcdadm-linux-amd64mv etcdadm-linux-amd64 /usr/......

Posted by 胡伟煌 on 2021-06-23

Cgroup不支持pid资源

问题描述机器内核版本较低，kubelet启动异常，报错如下： 1Failed to start ContainerManager failed to initialize top level QOS containers: failed to update top level Burstable QOS cgroup : failed to set supported cgroup sub......

Posted by 胡伟煌 on 2021-06-23

问题排查

increase the mlock limit

问题描述容器启动报错：increase the mlock limit，原因是ulimit mlock值比较小，需要将ulimit值调大。报错如下： 12345678910111213141516171819202122232425262728293031323334353637383940runtime: mlock of signal stack failed: 12runtime:......

Posted by 胡伟煌 on 2021-06-23

问题排查

Cgroup子系统无法挂载

问题描述内核版本： 5.4.56-200.el7.x86_64 docker报错 12345May 13 16:54:26 8b26d7a8 dockerd[44352]: time="2021-05-13T16:54:26.565235530+08:00" level=warning msg="failed to load plugin io.contain......

Posted by 胡伟煌 on 2021-06-23

问题排查

keycreate permission denied

问题描述 1write /proc/self/attr/keycreate: permission denied 具体报错： 1kuberuntime_manager.go:758] createPodSandbox for pod "ecc-hostpath-provisioner-8jbhf_kube-system(b8050fd3-4ffe-11eb-a82e-c6090b53405b......

Posted by 胡伟煌 on 2021-06-23

问题排查

runc-v1.1.3-exec-failed

问题描述当使用runc 1.1.3的版本时，如果执行systemctl daemon-reload后，通过exec进入容器则会触发以下错误，无法进入容器。 1FATA[0000] execing command in container: Internal error occurred: error executing command in container: failed to exe......

Posted by 胡伟煌 on 2021-06-23

问题排查

流程语句

流程语句 1. 条件语句 12345678910111213141516//在if之后条件语句之前可以添加变量初始化语句，用;号隔离if <条件语句> { //条件语句不需要用括号括起来，花括号必须存在 //语句体}else{ //语句体}//在有返回值的函数中，不允许将最后的return语句放在if...else...的结构中，......

Posted by 胡伟煌 on 2020-09-20

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