I am having an issue related to the Docker container which running a multi stage docker image comprising of nginx and bunch of html files. The problem is, it is shutting down gracefully after running for a week or 2 weeks. The signal it receives is : signal 3 (SIGQUIT) received, shutting down .
The list of containers running:
1a68ecd3b68f angular-nginx-web "nginx -g 'daemon of…" 14 hours ago Up 14 hours 80/tcp, 0.0.0.0:49162->8002/tcp, :::49162->8002/tcp web
600c7583e1cc nginx:alpine "/docker-entrypoint.…" 14 hours ago Up 14 hours 0.0.0.0:8000->80/tcp, :::8000->80/tcp nginx
fd9c765aedc1 express-node-backend "docker-entrypoint.s…" 14 hours ago Up 14 hours 0.0.0.0:49161->8001/tcp, :::49161->8001/tcp rest
The container name which is gracefully shutting down is web
Docker-compose file:
services:
nginx:
container_name: nginx
image: nginx:alpine
restart: always
ports:
- "8000:80"
command: nginx -g "daemon off;"
volumes:
- ./nginx/production/conf.d/:/etc/nginx/conf.d/
networks:
- prod
web:
container_name: web
image: angular-nginx-web
restart: always
volumes:
- ./nginx/web:/etc/nginx/conf.d
- type: bind
source: ./env/production/web_base_settings/settings.json
target: /usr/share/nginx/html/assets/settings/settings.json
ports:
- "8002"
networks:
- prod
rest:
container_name: rest
image:
restart: always
env_file:
- env/production/rest.env
ports:
- "8001"
networks:
- prod
Dockerfile for angular-nginx-web image:
# Stage 1
# Build target base #
#####################
FROM node:6-alpine AS base
WORKDIR /angular-nginx-web
COPY package*.json ./
COPY .git/ ./.git/
RUN apk add --no-cache git && \
npm install
COPY . /angular-nginx-web
RUN npm run build && \
rm -rf /node_modules
# Stage 2
FROM nginx:alpine as server
WORKDIR /usr/share/nginx/html
RUN rm -rf ./*
COPY --from=base /angular-nginx-web/dist .
ENTRYPOINT ["nginx", "-g", "daemon off;"]
The logs received :
<ip> - - [10/Mar/2022:17:23:57 +0000] "HEAD /assets/misc/connectcheck.txt HTTP/1.0" 200 0 "http://<ip>:8000/angular-web/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36" "10.80.240.47"
2022/03/11 02:12:38 [notice] 1#1: signal 3 (SIGQUIT) received, shutting down
2022/03/11 02:12:38 [notice] 9#9: exiting
2022/03/11 02:12:38 [notice] 7#7: gracefully shutting down
2022/03/11 02:12:38 [notice] 7#7: exiting
2022/03/11 02:12:38 [notice] 7#7: exit
2022/03/11 02:12:38 [notice] 8#8: gracefully shutting down
2022/03/11 02:12:38 [notice] 8#8: exiting
2022/03/11 02:12:38 [notice] 8#8: exit
2022/03/11 02:12:38 [notice] 1#1: signal 17 (SIGCHLD) received from 9
2022/03/11 02:12:38 [notice] 1#1: cache manager process 9 exited with code 0
2022/03/11 02:12:38 [notice] 1#1: signal 29 (SIGIO) received
2022/03/11 02:12:38 [notice] 1#1: signal 17 (SIGCHLD) received from 7
2022/03/11 02:12:38 [notice] 1#1: worker process 7 exited with code 0
2022/03/11 02:12:38 [notice] 1#1: signal 29 (SIGIO) received
2022/03/11 02:12:38 [notice] 1#1: signal 17 (SIGCHLD) received from 8
2022/03/11 02:12:38 [notice] 1#1: worker process 8 exited with code 0
2022/03/11 02:12:38 [notice] 1#1: exit
Can anybody please help. I am relatively new to Docker and finding it hard to figure out the reason for this graceful shutdown.