How to create for dockerized vue3 app an endpoint for liveness probe status? - vue.js

Question

I have a vue3 typescript app, which runs in a docker on k8s.
Vue app has different routes
/
/about
/login
all those routes will send back a html response from vue component.
For docker liveness probe I need a simple json response
/status -> HTTP 200 & res=> JSON {status:ok}
How can Vue3 respond only with JSON object on specific route?
my dockerfile
FROM node:16.13.0 as build-stage
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY ./ .
RUN npm run build
FROM nginx:1.20.1 as production-stage
RUN mkdir /app
COPY --from=build-stage /app/dist /app
COPY nginx.conf /etc/nginx/nginx.conf
COPY /entrypoint.sh /entrypoint.sh
EXPOSE 80
ENTRYPOINT ["/entrypoint.sh"]

Answer 1

I solved it by adding in nginx.conf additional location for liveness
location /health/liveness {
#access_log off;
error_log off;
add_header 'Content-Type' 'application/json';
return 200 '{"status":"ok"}';
}
nginx.conf
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
keepalive_timeout 65;
server {
listen 80;
server_name example.com;
location / {
root /app;
index index.html;
try_files $uri $uri/ /index.html;
}
location /health/liveness {
#access_log off;
error_log off;
add_header 'Content-Type' 'application/json';
return 200 '{"status":"ok"}';
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}
}