Tips and tricks

DevOps - Docker commands


Build and tag container
docker build -t yournameondockerhub/posts .
Push container to docker hub
docker push yournameondockerhub/posts
Run container
docker run service/posts


k8s expose port
kubectl port-forward [[pod-name]] 8080:4000

exposes port localhost 8080, the 4000 is the internal node port

k8s restart deployment
kubectl rollout restart deployment event-bus-depl

get the deployment names with k get deployments

k8s create secret
kubectl create secret generic jwt-secret --from-literal=jwt=asdf

you can create secrets that you can access via process.env

k8s run bash in pod
k get pods && k exec -it auth-depl-8b96d867-x7l8w sh

first run kubectl to get all pods then kubectl exec -it podname sh

k8s list contexts
k config get-contexts

you can can change context with k config use-context {{context-name}}

k8s get logs for pod
k logs {{POD_NAME}}

get pods with k get pods — you can also use describe for logs related to the deployment

*k is kubectl


get all pods
kubectl get pods -A

get all pods accross all namespaces

find ingress external ip
kubectl get svc -n ingress-nginx

get all pods accross all namespaces

check Apache config
kubectl exec -it -n ingress-nginx nginx-ingress-controller-67956bf89d-fv58j -- cat /etc/nginx/nginx.conf

where -n ingress-nginx is the namespace and nginx-ingress-controller-67956bf89d-fv58j is the pod name

{"type":"main_options","images_arr":"'#ffffff'","enable_ajax":"off","soundcloud_apikey":"","bg_isparallax":"off","bg_slideshow_time":"0","bg_transition":"slidedown","site_url":"https:\/\/","theme_url":"https:\/\/\/wp-content\/themes\/qucreative\/","blur_ammount":"26","width_column":"50","width_section_bg":"","width_gap":"30","border_width":"0","border_color":"#ffffff","translate_cancel_comment":"Cancel reply","translate_leave_a_comment":"Leave a comment","translate_leave_a_comment_to":"Leave a comment to","is_customize_preview":"off","width_blur_margin":"30","gallery_w_thumbs_autoplay_videos":"off","content_enviroment_opacity":"30","menu_enviroment_opacity":"70","base_url":"https:\/\/"}