hemanth22

###Creating a template
  oc login <YOUR_MINISHIFT_URL>
  oc login -u system:admin
  oc create -f <YOUR_YAML_FILE>.yaml -n openshift
  
###View/Edit template
  oc edit template <YOUR_TEMPLATE> -n openshift
  
###View all templates available
  oc get templates -n openshift

hemanth22

Quick Reference

• Basic structure
  • oc [name]
  • There are some exceptions, like oc help or oc logs <pod> or oc exec
  • Most commands support oc <command> --help
• Common resources (nouns)
  • Pods
  • Deployments
• Services

hemanth22

- Basic structure
  - oc <verb> <noun> [name]
  - There are some exceptions, like `oc help` or `oc logs <pod>` or `oc exec`
  - Most commands support `oc <command> --help`
- Common resources (nouns)
  - Pods
  - Deployments
  - Services
  - Routes
  - ConfigMaps

hemanth22

# Delete Running pods
for pod in $(oc get pods | grep Running | awk '{print $1}'); do oc delete pod ${pod} --grace-period=1;done

# Delete Secrets
for secret in $(oc get secrets | awk '{if (NR!=1){print $1}}'); do oc delete secret ${secret};done

hemanth22

### Namespace per tier ###

oc new-project kiosk-backend
oc new-project kiosk-frontend
oc new-project kiosk-database


oc new-app https://github.com/jankleinert/concession-kiosk-backend --name backend -n kiosk-backend

hemanth22

#!/bin/bash
# set -x

echo "INFO: start putting the cluster into an imbalanced state"

# target workloads to rebalance
TARGET_PODS="alertmanager-main|prometheus-k8s|prometheus-adapter|splunkforwarder-deployment"

# check all the target pods on each infra node
for NODE in $(oc get node -l node-role.kubernetes.io/infra= --no-headers | awk '{print $1}'); do

hemanth22

OpenShift CLI (oc) commands

hemanth22

export current_pod = 
export current_project = 
export current_application = 
export current_cicd_project = 
export current_template = 

# show / explore all openshift resources
oc get all

# exame deployment configuration of a pod

hemanth22

./oc get pods -A    --template '{{range .items}}{{if eq .status.phase "Running"}}{{.metadata.name}}{{"\n"}}{{end}}{{end}}'

oc get pods -A --template '{{range .items}}{{if and (ne .status.phase "Running") (ne .status.phase "Succeeded") }}{{.metadata.name}}{{"\n"}}{{end}}{{end}}'

hemanth22

Common Useful MySQL / MariaDB Commands

User Creation, Manipulation, Deletion

• Show all users in the mysql database:

  MariaDB [(none)]> select * from mysql.user;

• Delete a null user: