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Node Stat #!/bin/bash echo -e "NODE\t\t\tCPU Requests\tCPU Limits\tMemory Requests\tMemory Limits" for node in $(kubectl get nodes -o name | cut -d'/' -f2); do kubectl describe node "$node" | awk -v node="$node" ' BEGIN { cpu_req = cpu_lim = m...

Cluster Info kubectl cluster-info Kubernetes master is running at https://lb-tomato.example.local:6443 KubeDNS is running at https://lb-tomato.example.local:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy To further debug and diagnose cluster...

Get Pod Image kubectl get po xxx -o jsonpath="{.items[*].spec['containers'][*].image}{'\n'}"; echo List All Images All Images = Containers Images + Init Containers Images All Imageskubectl get pods -o jsonpath="{.items[*].spec['containers', 'initContainers'...

List Repo helm repo ls Search Chart helm search repo chart-name List Release helm ls NAME: clickhouse NAMESPACE: monitor REVISION: 1 UPDATED: 2023-07-24 10:52:50.017724318 +0000 UTC STATUS: deployed CHART: clickhouse-0.2.5 APP VERSION: 23.6.2.18-alpine...

Get Health curl -s "http://localhost:9200/_cluster/health?pretty" { "cluster_name" : "docker-cluster", // 集群名称 "status" : "green", // 集群健康状态，green 表示正常 "timed_out" : false, // 查询集群健康时是否超时，false 表示未超时 "number_of_nodes" ...

MAN This command can view different sections of the manual pages. man man man - an interface to the system reference manuals The table below shows the section numbers of the manual followed by the types of pages they contain. 1 Executable programs or shell...

Sort Sorts lines of text files by default, non-numeric. sort - sort lines of text files Reverse Order sort -r file Numeric Sort sort -n file Sort By Month Month format: Jan, Feb, Mar. sort -M file Specify Column Default is separated by (consecutive) space...

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Full name Global Regular Expression Print, originated from a Unix editor ed command g/re/p, where g (global) is global matching, re (regular expression) is regular expression, p (print) is print. Therefore, the grep tool is essentially used to globally match r...

PS stands for Process Status. man ps ps - report a snapshot of the current processes. Style Source Prefix Unix AT&T System of Bell Labs - BSD Berkeley Software Distribution None GNU Improved version by GNU Project -- Due to historical reasons, ...

Kill Command It's actually a tool for sending signals to processes, not necessarily killing them. man kill kill - send a signal to a process Default Signal The default signal for the kill command is SIGTERM, corresponding to number 15, for a graceful termin...

man top top - display Linux processes The top command defaults to sorting processes by CPU usage rate and dynamically displaying the results. top - 09:19:05 up 6 days, 10:02, 2 users, load average: 0.13, 0.05, 0.01 Tasks: 126 total, 1 running, 125 sleepi...

https://kubernetes.io/docs/reference/kubectl/generated/kubectl_edit/ Examples Edit in JSON kubectl edit -o json deploy foo Change Editor KUBE_EDITOR="vim" kubectl edit deploy foo Save Config kubectl edit deploy foo --save-config 把本次修改后的完整资源配置，保存到 annotati...

ss summary ss -s Total: 1785 TCP: 2635 (estab 1564, closed 1026, orphaned 23, timewait 1013) Transport Total IP IPv6 RAW 0 0 0 UDP 2 1 1 TCP 1609 768 841 INET 1611 769 ...

Get Container Running Containersdocker ps All Containersdocker ps -a Inspect Container docker inspect foo Get Tail Logs docker logs --tail 100 xxx Get Mounts Info docker inspect foo | grep -A 10 -i mounts "Mounts": [ { "Type": "bind", ...

iostat apt-get install -y sysstat iostat -x 1 iotop apt-get install iotop iotop -aoP lsblk lsblk lsblk -o NAME,SIZE,TYPE,MOUNTPOINT dmsetup ls lvdisplay cat /etc/fstab

Check Health curl http://172.17.0.2:9200/_cluster/health?pretty Set Replicas Num curl -X PUT "http://172.17.0.2:9200/_all/_settings" \ -H "Content-Type: application/json" \ -d '{ "number_of_replicas": 0 }' Enabled Performance...

Config Path mysql --help | grep -B 1 etc/my.cnf Default options are read from the following files in the given order: /etc/my.cnf /etc/mysql/my.cnf /opt/homebrew/etc/my.cnf ~/.my.cnf mysqldump With DB Creation User --databases mysqldump -hlocalhost -uroot -...