markruler

Install Kubernetes on an Offline CentOS 7 Machine - (1) ONLINE SERVER

pkg
├── 1-server
├── 2-cri
├── 3-k8s
├── 4-cni
├── 5-gpu
└── 6-mec

1. NVIDIA 드라이버 설치 on Ubuntu

ref/1

# 버전에 맞게 설치

# sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub
# sudo sh -c 'echo "deb http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 /" > /etc/apt/sources.list.d/cuda.list'

Install Kubernetes on an Offline CentOS 7 Machine - (2) OFFLINE SERVER

pkg
├── 1-server
├── 2-cri
├── 3-k8s
├── 4-cni
├── 5-gpu
└── 6-mec

kubespray error (1) 0070-system-packages.yml:73

task path: /root/pkg/kubespray/roles/kubernetes/preinstall/tasks/0070-system-packages.yml:73
problem: 미리 rpm 패키지를 수동으로 설치해서 버전 차이로 생긴 오류
solved: worker1 노드로 가서 해당되는 패키지 업데이트 명령
yum update <pkg>
- yum update unzip xfsprogs openssl e2fsprogs
아래는 에러 문구

Jaeger on Minikube

Install Helm chart for Jaeger operator

cd $HOME

wget https://github.com/jaegertracing/helm-charts/releases/download/jaeger-operator-2.17.0/jaeger-operator-2.17.0.tgz
# or
curl -L https://github.com/jaegertracing/helm-charts/releases/download/jaeger-operator-2.17.0/jaeger-operator-2.17.0.tgz -O

containerd on Minikube

Install

https://minikube.sigs.k8s.io/docs/start/

MacOS

# If the Brew Package Manager installed:

Local Mirror of RHEL

How to mirror a repository in Linux

How to create a local mirror of the latest update for Red Hat Enterprise Linux 5, 6, 7, 8 without using Satellite server?

CentOS SELinux 설정 및 해제하기

server 1

yum install yum-utils createrepo

"cannot allocate memory"

kubectl get pod -A --field-selector spec.nodeName=worker-node -o wide

kubectl describe pod calico-node-hh2g8 -n kube-system

List of Linux networking tools

netstat (ss)

Displays contents of /proc/net files. It works with the Linux Network Subsystem, it will tell you what the status of ports are ie. open, closed, waiting, masquerade connections. It will also display various other things. It has many different options. Netstat (Network Statistic) command display connection info, routing table information etc. To displays routing table information use option as -r.

Sample output:

Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)    
tcp4 0 0 127.0.0.1.62132 127.0.0.1.http ESTABLISHED

	# Put this in your ~/.gitconfig or ~/.config/git/config
	# Windows users: "~" is your profile's home directory, e.g. C:\Users\<YourName>
	[user]
	name = Your Full Name
	email = [email protected]
	[color]
	# Enable colors in color-supporting terminals
	ui = auto
	[alias]
	# List available aliases