Category: Docker – ServerOK

Install Odoo using Docker

Posted on September 13, 2020 by ServerOk

Odoo is an open source ERP and CRM software written in python. To install Odoo using docker, first install docker using

wget -qO- https://get.docker.com/ | sh

1	wget -qO- https://get.docker.com/ \| sh

Odoo use PostgreSQL server to store database. Lets create a postgres docker container.

docker run -d -e POSTGRES_USER=odoo -e POSTGRES_PASSWORD=your-password-here -e POSTGRES_DB=postgres --name odoo-db postgres:10

1	docker run -d -e POSTGRES_USER=odoo -e POSTGRES_PASSWORD=your-password-here -e POSTGRES_DB=postgres --name odoo-db postgres:10

In above command, replace your-password-here with a secure password. Create a Odoo container with

docker run -d -p 127.0.0.1:8069:8069 -p 127.0.0.1:8072:8072 --name odoo --link odoo-db:db -t odoo

1	docker run -d -p 127.0.0.1:8069:8069 -p 127.0.0.1:8072:8072 --name odoo --link odoo-db:db -t odoo

If container did not […]

Docker delete container after running

Posted on January 1, 2020 by ServerOk

When you run a docker image, it create a container and run it. After docker container stop, container stays, so you can use it again if required. Some times, you need to delete docker container after it is run. This is useful if your docker container is just a command line executable. In my case, […]

Run PostgreSQL in Docker

Posted on June 30, 2019 (June 30, 2019) by ServerOk

To run PostgreSQL on docker, create a directory for saving the data presistant

mkdir -p /opt/my-postgresql

1	mkdir -p /opt/my-postgresql

run docker container

docker run --name my-postgresql \
    -p 5432:5432 \
    -e POSTGRES_PASSWORD=serverok123 \
    -e POSTGRES_USER=serverok \
    -e POSTGRES_DB=serverok \
    -v /opt/my-postgresql:/var/lib/postgresql/data \
    -d postgres

docker run --name my-postgresql \

-p 5432:5432 \

-e POSTGRES_PASSWORD=serverok123 \

-e POSTGRES_USER=serverok \

-e POSTGRES_DB=serverok \

-v /opt/my-postgresql:/var/lib/postgresql/data \

-d postgres

In above, change the value for POSTGRES_DB, POSTGRES_USER and POSTGRES_PASSWORD as needed. Connect to PostgreSQL server To connect to PostgreSQL server, run

docker container exec -ti my-postgresql bash

1	docker container exec -ti my-postgresql bash

Now you are inside PostgreSQL conainer, to login, run

psql -U serverok -W

1	psql -U serverok -W

It will ask for […]

Docker compose start container on boot

Posted on March 3, 2019 by ServerOk

I have a docker container, that i need to start on server boot. The docker-compose.yml file i used to create this docker container is

[root@cp03 serverok-rubycms]# cat docker-compose.yml 
version: '3'
services:
  web:
    image: serverok/rubycms:1.0
    command: bash -c "rm -f tmp/pids/server.pid && cd /myapp && source /etc/profile.d/rvm.sh && script/server -e production"
    volumes:
      - /home/naiwnyc/cms:/myapp
    ports:
      - "3000:3000"
[root@cp03 serverok-rubycms]#

[root@cp03 serverok-rubycms]# cat docker-compose.yml

version: '3'

services:

web:

image: serverok/rubycms:1.0

command: bash -c "rm -f tmp/pids/server.pid && cd /myapp && source /etc/profile.d/rvm.sh && script/server -e production"

volumes:

- /home/naiwnyc/cms:/myapp

ports:

- "3000:3000"

[root@cp03 serverok-rubycms]#

With above docker-compose.yml file. i have to start docker container manually after server reboot. To make it auto start, add the line

    restart: always

1	restart: always

Here is the modified docker-compose.yml file.

[root@cp03 serverok-rubycms]# cat docker-compose.yml 
version: '3'
services:
  web:
    image: serverok/rubycms:1.0
    restart: always
    command: bash -c "rm -f tmp/pids/server.pid && cd /myapp && source /etc/profile.d/rvm.sh && script/server -e production"
    volumes:
      - /home/naiwnyc/cms:/myapp
    ports:
      - "3000:3000"
[root@cp03 serverok-rubycms]#

[root@cp03 serverok-rubycms]# cat docker-compose.yml

version: '3'

services:

web:

image: serverok/rubycms:1.0

restart: always

command: bash -c "rm -f tmp/pids/server.pid && cd /myapp && source /etc/profile.d/rvm.sh && script/server -e production"

volumes:

- /home/naiwnyc/cms:/myapp

ports:

- "3000:3000"

[root@cp03 serverok-rubycms]#

[…]

docker-compose: error while loading shared libraries

Posted on March 3, 2019 by ServerOk

When running docker-compose on CentOS 7, i get following error

[root@cp03 serverok-rubycms]# docker-compose up 
docker-compose: error while loading shared libraries: libz.so.1: failed to map segment from shared object: Operation not permitted
[root@cp03 serverok-rubycms]#

[root@cp03 serverok-rubycms]# docker-compose up

docker-compose: error while loading shared libraries: libz.so.1: failed to map segment from shared object: Operation not permitted

[root@cp03 serverok-rubycms]#

To fix the error, do the following

mv /usr/local/bin/docker-compose /usr/local/bin/docker-compose-bin

1	mv /usr/local/bin/docker-compose /usr/local/bin/docker-compose-bin

Now create a new file

vi /usr/local/bin/docker-compose

1	vi /usr/local/bin/docker-compose

Add following content

#!/bin/bash

export TMPDIR=/opt/compose-tmp
/usr/local/bin/docker-compose-bin "$@"

#!/bin/bash

export TMPDIR=/opt/compose-tmp

/usr/local/bin/docker-compose-bin "[email protected]"

Make it executable

chmod 755 /usr/local/bin/docker-compose

1	chmod 755 /usr/local/bin/docker-compose

Create temp folder

mkdir -p /opt/compose-tmp

1	mkdir -p /opt/compose-tmp

Now docker-compose will work. […]

Dockerfile

Posted on February 10, 2019 by ServerOk

Create Python Flask Docker Container […]

Create Python Flask Docker Container

Posted on February 10, 2019 by ServerOk

Create a folder and change to the folder

mkdir python-flask
cd python-flask

1 2	mkdir python-flask cd python-flask

Create file

vi Dockerfile

1	vi Dockerfile

Add following content

FROM python:2.7-slim

WORKDIR /app
COPY . /app

RUN pip install -r requirments.txt

EXPOSE 8080

CMD ["python", "app.py"]

FROM python:2.7-slim

WORKDIR /app

COPY . /app

RUN pip install -r requirments.txt

EXPOSE 8080

CMD ["python", "app.py"]

Create file requirements.txt, add “Flask” to it.

echo "Flask" > requirments.txt

1	echo "Flask" > requirments.txt

Now lets create our Python Flask Application

vi app.py

vi app.py

Add following content

from flask import Flask
import os
import socket

app = Flask(__name__)

@app.route("/")
def hello():
	return  "<h1>Ok, World</h1>"

if __name__ == "__main__":
	app.run(host="0.0.0.0", port=8080)

from flask import Flask

import os

import socket

app = Flask(__name__)

@app.route("/")

def hello():

return "<h1>Ok, World</h1>"

if __name__ == "__main__":

app.run(host="0.0.0.0", port=8080)

To test Flask application locally, install Flask using pip

sudo pip install Flask

1	sudo pip install Flask

Now run the application using

python app.py

1	python app.py

Now you will […]

Create Kubernetes cluser using gcloud

Posted on February 10, 2019 (March 14, 2019) by ServerOk

gcloud auth login

1	gcloud auth login

Set default region

gcloud config set compute/zone us-central1-a

1	gcloud config set compute/zone us-central1-a

To create a cluser, run

gcloud container clusters create CLUSTER-NAME

1	gcloud container clusters create CLUSTER-NAME

To create a cluster with 2 nodes, run

gcloud container clusters create CLUSTER-NAME --num-nodes 2

1	gcloud container clusters create CLUSTER-NAME --num-nodes 2

To specify compute engine type during cluster creation, run

gcloud container clusters create CLUSTER-NAME --num-nodes 2 --machine-type n1-standard-2

1	gcloud container clusters create CLUSTER-NAME --num-nodes 2 --machine-type n1-standard-2

You can also specify scopes, this allow you to give the cluster permission to access other google cloud resources. For example […]

Docker container start on boot

Posted on January 2, 2019 by ServerOk

To set a docker container to start on system reboot, run

docker update --restart=unless-stopped CONTAINER_ID

1	docker update --restart=unless-stopped CONTAINER_ID

Replace CONTAINER_ID with actual ID of your container. […]

Docker Nginx Proxy

Posted on December 23, 2018 by ServerOk

Docker Nginx Proxy allow you to run multiple docker containers on same server behind nginx proxy. This is done using https://github.com/jwilder/nginx-proxy To do this, you need a server with port 80 and 443 unused. To setup nginx proxy, run following

cd /root/
git clone https://github.com/evertramos/docker-compose-letsencrypt-nginx-proxy-companion.git
cd docker-compose-letsencrypt-nginx-proxy-companion
cp .env.sample .env
./start.sh

cd /root/

git clone https://github.com/evertramos/docker-compose-letsencrypt-nginx-proxy-companion.git

cd docker-compose-letsencrypt-nginx-proxy-companion

cp .env.sample .env

./start.sh

This will start nginx proxy. You can modify .env file if you want. Starting […]