I am having some trouble mounting a directory on my machine into my Docker container. I would like to mount a directory containing files necessary to run a node server. So far, I have successfully been able to run and access my server in browser using the Dockerfile below:
# Use an ubuntu base image
FROM ubuntu:14.04
# Install Node.js and npm (this will install the latest version for ubuntu)
RUN apt-get update
RUN apt-get -y install curl
RUN curl -sL https://deb.nodesource.com/setup_0.12 | sudo bash -
RUN apt-get -y install nodejs
RUN apt-get -y install git
# Bundle app source (note: all of my configuration files/folders are in the current directory along with the Dockerfile)
COPY . /src
Install app dependencies
#WORKDIR /src
RUN npm install
RUN npm install -g bower
RUN bower install --allow-root
RUN npm install -g grunt
RUN npm install -g grunt-cli
#What port to expose?
EXPOSE 1234
#Run grunt on container start
CMD grunt
And these commands:
docker build -t test/test .
docker run -p 1234:1234 -d test/test
However, I figured that I would like the configuration files and whatnot to persist, and thought to do this by mounting the directory (with the files and Dockerfile) as a volume. I used other solutions on StackOverflow to get this command:
docker run -p 1234:1234 -v //c/Users/username/directory:/src -d test/test
My node server seems to start up fine (no errors in the log), but it takes significantly longer to do so, and when I try to access my webpage in browser I just get a blank page.
Am I doing something incorrectly?
EDIT: I have gotten my server to run--seems to have been a weird error in my configuration. However, it still takes a long time (around a minute or two) for my server to start when I mount a volume from my host machine. Does anyone have some insight as to why this is?
Related
I have a Dockerfile that installs multiple services on a ubuntu baseimage such as npm, nodejs and ssh.
I want be able to ssh into the container and also run a node express application.
It works perfectly to run one of that. But i cant figure out how to start both services!
To run ssh i did:
CMD ["/usr/sbin/sshd","-D"]
For the node application i clone a git repo and run:
CMD ["node" "app.js"]
Each of that runs perfectly.
But how can i execute both commands?
I tried putting them both in the CMD directive:
CMD ["/usr/sbin/sshd","-D", "node", "app.js"]
I also tried to execute one of them with RUN:
RUN node app.js
CMD ["/usr/sbin/sshd","-D"]
It executes but is than stuck at this point and doesnt continue to compute the image..
How can i execute /usr/sbin/sshd -D (which i need to run ssh) and also node app.js?
Heres the full Dockerfile:
FROM ubuntu:latest
RUN apt update && apt install openssh-server sudo -y
RUN apt install git -y
RUN apt install nodejs -y
RUN apt install npm -y
RUN npm install express
RUN npm install better-sqlite3
RUN npm install morgan
RUN echo "PermitRootLogin yes">etc/ssh/sshd_config
RUN echo 'root:root' | chpasswd
RUN git clone https://github.com/mauriceKalevra/Web2-Projekt.git
WORKDIR Web2-Projekt
RUN npm install
RUN service ssh start
EXPOSE 22
#CMD ["/usr/sbin/sshd","-D", "&&", "node", "app.js"lss" ]
CMD ["node", "app.js"]
Two options are available to do this.
Option 1
Use a shell and && to execute two commands.
FROM debian:stretch-slim as builder
CMD touch test.txt && ls
Option 2
Put all commands you want to execute in executable script entrypoint.sh and run that script in CMD
FROM debian:stretch-slim as builder
COPY entrypoint.sh /entrypoint.sh
CMD ./entrypoint.sh
entrypoint.sh
#!/bin/sh
touch test.txt
ls
EDIT
Please note, that the commands will by default be executed sequentially so the second command will only be executed after the first. If your first process does never terminate, the second one will never start. Use & to execute commands in the background. For more information on how to run commands in parallel or sequentially please see this thread.
I have been trying to create CI/CD using code deploy and bitbucket repo.
The pipeline is successful but I am not seeking any codes into ec2. I can only see the node module in ec2.
If anyone came through the same issues or could help me to solve them that would be great.
appspec.yml
version: 0.0
os: linux
files:
- source: /
destination: /home/ubuntu/gt
hooks:
ApplicationStart:
- location: scripts/start_server.sh
runas: root
start_server.sh
sudo apt-get update
# install the application using npm
# we need to traverse to where the application bundle is copied too.
#some comments
#added commets
sudo su
rm -rf /home/ubuntu/gt
mkdir /home/ubuntu/gt
echo installing application with npm
cd /home/ubuntu/gt
sudo apt-get install -y npm
echo installing pm2
npm install pm2 -g
sudo yarn
pm2 delete gt
pm2 start npm --name 'gt' -- start
I am not seeking any codes into ec2
This could be because you are removing all content of your folder:
rm -rf /home/ubuntu/gt
since your ApplicationStart runs after files. So whatever you copy in files, gets deleted in ApplicationStart. For the order of execution, please have a look here.
I' m trying to run npm install without installing npm:
sudo docker run -it -v $PWD/../src:/usr/src/app node:latest npm install
However I don't know where the WORKDIR of node:latest is located. I want node_modules installed in the folder $PWD/../src. I also don't want to create a dockerfile just for that.
This is actually a valid use case for using Docker where you just want to have a quick temporary environment to execute your scripts.
In case you do not know the WORKDIR of any image, you can still overwrite it when creating the container as described here.
sudo docker run --rm -it \
-w /any/directory \
-v $PWD/../src:/any/directory \
node:latest \
npm install
NOTE I added the flag --rm so that the container will automatically be cleaned up once the npm install command finishes running.
I have a meteor application.This app works well on the Centos7 VM.
I need to create docker container of this app and install or import this container on other virtual machines.
What do ِdocker file need to save and load container on another VM?
NodeJs?
Mongodb?
MeteorJs?
Shouldn't I store Mongodb file in Docker container?
this is my docker file:
# Pull base image.
FROM node:8.11.4
# Install build tools to compile native npm modules
RUN npm install -g node-gyp
RUN apt-get install curl -y
RUN curl https://install.meteor.com/ | sh
# Create app directory
RUN mkdir -p /usr/app
COPY . /usr/app
RUN cd /usr/app/programs/server
RUN npm install
WORKDIR /usr/app
CMD ["node", "main.js"]
EXPOSE 3000
There are many ways to skin this cat ... lets assume you have researched the alternatives on how to execute a meteor app using containers by using tools which automates the below setup - meteor calls their version of this automation Galaxy
I suggest you run the meteor commands outside the container intended to run your app from since a meteor install is huge, slow to install and some of the libraries you may pull in, or the libraries your libraries pull in, may need c or c++ compilers so meteor and its friends do not need to get installed into your app container everytime you want to recompile your app ... your app container only needs nodejs and your bundle ... when you execute a meteor app it does not use meteor instead the app is executed using nodejs directly since at this point your code has been compiled into a bundle which is pure nodejs
Yes you would do well to put mongodb into its own container
No, no need to put MeteorJs inside your app container instead just like meteor itself those compile time tools are not needed during execution time so install MeteorJs as well as all other tools needed for a successful meteor build on your host machine which is where you execute your meteor build command
In your above Dockerfile the last statement EXPOSE 3000 will never get reached so put it before your CMD node
So outside your container get meteor installed then issue
cd /your/webapp/src
meteor build --server https://example.com --verbose --directory /webapp --server-only
above will compile your meteor project into a bundle dir living at
ls -la /webapp/bundle/
then copy into that freshly cut bundle dir your Dockerfile etc :
.bashrc
Dockerfile
bundle/
then create your container
docker build --tag localhost:5000/hygge/loudweb-admin --no-cache .
docker push localhost:5000/hygge/loudweb-admin
here is a stripped down Dockerfile
cat Dockerfile
# normal mode - raw ubuntu run has finished and base image exists so run in epoc mode
FROM ubuntu:18.04
ENV DEBIAN_FRONTEND noninteractive
ENV TERM linux
ENV NODE_VER=v8.11.4
ENV NODE_NAME=node-${NODE_VER}
ENV OS_ARCH=linux-x64
ENV COMSUFFIX=tar.gz
ENV NODE_PARENT=/${NODE_NAME}-${OS_ARCH}
ENV PATH=${NODE_PARENT}/bin:${PATH}
ENV NODE_PATH=${NODE_PARENT}/lib/node_modules
RUN apt-get update && apt-get install -y wget && \
wget -q https://nodejs.org/download/release/${NODE_VER}/${NODE_NAME}-${OS_ARCH}.${COMSUFFIX} && \
tar -xf ${NODE_NAME}-${OS_ARCH}.${COMSUFFIX}
ENV MONGO_URL='mongodb://$MONGO_SERVICE_HOST:$MONGO_SERVICE_PORT/meteor'
ENV ROOT_URL=https://example.com
ENV PORT 3000
EXPOSE 3000
RUN which node
WORKDIR /tmp
# CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/conf.d/supervisord.conf" ]
# I strongly suggest you wrap below using supervisord
CMD ["node", "main.js"]
to launch your container issue
docker-compose -f /devopsmicro/docker-compose.yml pull loudmail loud-devops nodejs-enduser
docker-compose -f /devopsmicro/docker-compose.yml up -d
here is a stripped down docker compose yaml file
version: '3'
services:
nodejs-enduser:
image: ${GKE_APP_IMAGE_ENDUSER}
container_name: loud_enduser
restart: always
depends_on:
- nodejs-admin
- loudmongo
- loudmail
volumes:
- /cryptdata6/var/log/loudlog-enduser:/loudlog-enduser
- ${TMPDIR_GRAND_PARENT}/curr/loud-build/${PROJECT_ID}/webapp/enduser/bundle:/tmp
environment:
- MONGO_SERVICE_HOST=loudmongo
- MONGO_SERVICE_PORT=$GKE_MONGO_PORT
- MONGO_URL=mongodb://loudmongo:$GKE_MONGO_PORT/test
- METEOR_SETTINGS=${METEOR_SETTINGS}
- MAIL_URL=smtp://support#${GKE_DOMAIN_NAME}:blah#loudmail:587/
links:
- loudmongo
- loudmail
ports:
- 127.0.0.1:3000:3000
working_dir: /tmp
command: /usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf
Once you have your app executing using containers you can work to stop using ubuntu as your container base and use a smaller, simpler docker base image like nodejs, busybox, etc however using ubuntu is easier initially since it has ability to let you install packages from inside a running container which is nice during development
the machinations surrounding above are vast ... above is a quick copy N paste plucked from the devops side of the house with hundreds of helper binaries + scripts, config templates, tls certs ... this is a tiny glimpse into the world of getting an app to execute
#Scott Stensland answer is good, in that it explains how to manually create a docker container for Meteor.
There is a simpler way use Meteor-up (mup) http://meteor-up.com/
EASILY DEPLOY YOUR APP
Meteor Up is a production quality Meteor app deployment tool.
Install with one command:
$ npm install --global mup
You set up a simple config file, and it looks after creating the container, doing npm install, setting up ssl certs etc. Much less work than doing it by hand
I'm trying to use Docker as a dev environment in Windows.
The app I'm developing uses Node, NPM and Bower for setting up the dev tools, and Grunt for its task running, and includes a live reload so the app updates when the code changes. Pretty standard. It works fine outside of Docker but I keep running into the Grunt error Fatal error: Unable to find local grunt. no matter how I try to do it inside Docker.
My latest effort involves installing all the npm and bower dependencies to an app directory in the image at build time, as well as copying the app's Gruntfile.js to that directory.
Then in Docker-Compose I create a Volume that is linked to the host app, and ask Grunt to watch that volume using Grunt's --base option. It still won't work. I still get the fatal error.
Here are the Docker files in question:
Dockerfile:
# Pull base image.
FROM node:5.1
# Setup environment
ENV NODE_ENV development
# Setup build folder
RUN mkdir /app
WORKDIR /app
# Build apps
#globals
RUN npm install -g bower
RUN echo '{ "allow_root": true }' > /root/.bowerrc
RUN npm install -g grunt
RUN npm install -g grunt-cli
RUN apt-get update
RUN apt-get install ruby-compass -y
#locals
ADD package.json /app/
ADD Gruntfile.js /app/
RUN npm install
ADD bower.json /app/
RUN bower install
docker-compose.yml:
angular:
build: .
command: sh /host_app/startup.sh
volumes:
- .:/host_app
net: "host"
startup.sh:
#!/bin/bash
grunt --base /host_app serve
The only way I can actually get the app to run at all in Docker is to copy all the files over to the image at build time, create the dev dependencies there and then, and run Grunt against the copied files. But then I have to run a new build every time I change anything in my app.
There must be a way? My Django app is able to do a live reload in Docker no problems, as per Docker's own Django quick startup instructions. So I know live reload can work with Docker.
PS: I have tried leaving the Gruntfile on the Volume and using Grunt's --gruntfile option but it still crashes. I have also tried creating the dependencies at Docker-Compose time, in the shared Volume, but I run into npm errors to do with unpacking tars. I get the impression that the VM can't cope with the amount of data running over the shared file system and chokes, or maybe that the Windows file system can't store the Linux files properly. Or something.