I have a python code which runs fine to pull data from an API but I am getting issues to run it via docker. I am using pyodbc to load data into SQLServer in my python code. Here is my dockerfile:
FROM python:3.9.2
RUN apt-get update -y && apt-get install -y --no-install-recommends \
unixodbc-dev \
unixodbc \
libpq-dev
WORKDIR /app
COPY requirements.txt requirements.txt
RUN pip3 install -r requirements.txt
COPY . .
CMD ["python3","LoadAPI_data.py"]
After creating the docker image, when I am trying to run the docker image, I get the following error:
Error !!!!: ('01000', "[01000] [unixODBC][Driver Manager]Can't open
lib 'ODBC Driver 17 for SQL Server' : file not found (0)
(SQLDriverConnect)")
Can anyone let me know how do I get rid of this error?
I was able to get my code running by updating my dockerfile to run installation of SQL DB as well as python. Here is what my new dockerfile looks like.
FROM ubuntu:18.04
RUN apt-get update -y && \
apt-get install -y \
libpq-dev \
gcc \
python3-pip \
unixodbc-dev
RUN apt-get update && apt-get install -y \
curl apt-utils apt-transport-https debconf-utils gcc build-essential g++-5\
&& rm -rf /var/lib/apt/lists/*
RUN curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add -
RUN curl https://packages.microsoft.com/config/ubuntu/18.04/prod.list > /etc/apt/sources.list.d/mssql-release.list
RUN apt-get update
RUN ACCEPT_EULA=Y apt-get install -y --allow-unauthenticated msodbcsql17
RUN pip3 install pyodbc
WORKDIR /app
COPY requirements.txt requirements.txt
RUN pip3 install -r requirements.txt
COPY . .
CMD ["python3","LoadAPI_data.py"]
Related
dockerfile:
FROM python:3.9
ENV PYTHONUNBUFFERED 1
RUN mkdir /app
WORKDIR /app
RUN apt-get update && apt-get upgrade -y && \
curl -fsSL https://deb.nodesource.com/setup_17.x | bash - && \
apt-get install -y nodejs && \
This will install nodejs every time I build. Can I install nodejs only if it is not installed?
unless you change any of the layers above and including this one or clear docker cache installation would not be reexecuted
I have the following Dockerfile, currently working locally in my device:
FROM python:3.7-slim-buster
WORKDIR /app
COPY . /app
VOLUME /app
RUN chmod +x /app/cat/sitemap_download.py
COPY entrypoint.sh /app/entrypoint.sh
RUN chmod +x /app/entrypoint.sh
ARG VERSION=3.7.4
RUN apt update && \
apt install -y bash wget && \
wget -O /tmp/nordrepo.deb https://repo.nordvpn.com/deb/nordvpn/debian/pool/main/nordvpn-release_1.0.0_all.deb && \
apt install -y /tmp/nordrepo.deb && \
apt update && \
apt install -y nordvpn=$VERSION && \
apt remove -y wget nordvpn-release
RUN apt-get clean \
&& apt-get -y update
RUN apt-get -y install python3-dev \
python3-psycopg2 \
&& apt-get -y install build-essential
RUN pip install --upgrade pip
RUN pip install -r cat/requirements.txt
RUN pip install awscli
ENTRYPOINT ["sh", "-c", "./entrypoint.sh"]
But when I deploy it to Fargate, the container stops before reaching the steady state with:
sh: 1: ./entrypoint.sh: not found
Edit: Adding entrypoint.sh file for clarification:
#!/bin/env sh
# start process, but it should exit once the file is in S3
/app/cat/sitemap_download.py
# Once the process is done, we are good to scale down the service
aws ecs update-service --cluster cluster_name --region eu-west-1 --service service-name --desired-count 0
I have tried modifying ENTRYPOINT to use it as exec form, or with full path but always get the same issue. Any ideas on what am I doing wrong?
I've managed to fix it now.
Changing the Dockerfile to look as follows solves the issue:
COPY . /app
VOLUME /app
RUN chmod +x /app/cat/sitemap_download.py
COPY entrypoint.sh /app/entrypoint.sh
RUN chmod +x /app/entrypoint.sh
ARG VERSION=3.7.4
RUN apt update && \
apt install -y bash wget && \
wget -O /tmp/nordrepo.deb https://repo.nordvpn.com/deb/nordvpn/debian/pool/main/nordvpn-release_1.0.0_all.deb && \
apt install -y /tmp/nordrepo.deb && \
apt update && \
apt install -y nordvpn=$VERSION && \
apt remove -y wget nordvpn-release
RUN apt-get clean \
&& apt-get -y update
RUN apt-get -y install python3-dev \
python3-psycopg2 \
&& apt-get -y install build-essential
RUN pip install --upgrade pip
RUN pip install -r cat/requirements.txt
RUN pip install awscli
ENTRYPOINT ["/bin/bash"]
CMD ["./entrypoint.sh"]
I tried this after reading: What is the difference between CMD and ENTRYPOINT in a Dockerfile?
I believe this syntax fixes it because with entrypoint I'm indicating bash to be run at start, and then passing the script as parameter.
Following is my Dockerfile :-
FROM ubuntu:18.04 AS builder
RUN apt update -y
RUN apt install python3.8 -y && apt install python3-pip -y
RUN apt install build-essential automake pkg-config libtool libffi-dev libgmp-dev -y
RUN apt install libsecp256k1-dev -y
RUN apt install openjdk-8-jre -y
RUN apt install git -y
RUN apt install libkrb5-dev -y
RUN apt install vim -y
RUN mkdir /opt/app
RUN chown -R root:root /opt/app
COPY ["requirements.txt","/opt/app/requirements.txt"]
SHELL ["/bin/bash", "-c"]
WORKDIR /opt/app
RUN pip3 install -r requirements.txt && apt-get -y clean all
RUN mkdir /opt/app/
RUN chown -R root:root /opt/app/
RUN cd /opt/app/
RUN git clone -b master https://bitbucket.org/heroes/test.git
CMD ["bash","/opt/app/bin/connect.sh"]
Docker image is generating with an image file size of 1.7G. I need to have OpenJDK hence cannot use a standard python package as a base package. When I perform docker history , I can see 2 or 3 layers (installing packages above like Python3.8, OpenJDK and libsecp256k1-dev) taking up to 400MB to 500MB in size. Ubuntu as a base image takes only 64 MB however rest of size is taking by my dockerfile layers.
I believe I need to re-write the dockerfile in order to reduce the file size which I did but nothing happened concrete.
Please assist me on reducing the image less than 1 GB at least.
[Update]
Below is my updated Dockerfile:-
FROM ubuntu:18.04 AS builder
WORKDIR /opt/app
COPY requirements.txt /opt/app/aws/requirements.txt
RUN mkdir -p /opt/app/aws \
&& apt-get update -yq \
&& apt-get install -y python3.8 python3-pip openjdk-8-jre -yq && apt-get -y clean all \
&& chown -R root:root /opt/app && cd /opt/app/aws && pip3 install -r requirements.txt
FROM alpine
COPY --from=builder /opt/app /opt/app
SHELL ["/bin/bash", "-c"]
CMD ["bash","/opt/app/aws/bin/connector/connect.sh"]
Screenshot of image size:-
After removing unwanted libraries like git, etc and using the multi-stage build, the image is now approx 1.7 GB which I believe is a lot. Any suggestion to improve this?
You have multiple issues going on.
First, each of your RUN apt install is increasing your image size, you should have them all in the same RUN stage, and at the end of the stage, delete all cached apt files.
Second, you're installing unnecessary stuff. Why would you need vim and git for instance? Why are you installing build-essential and other build-related stuff if you're not building anything?
Third, it seems you tried to do a multi-stage build but ended up adding everything to the same image. Read up on python multi-stage builds.
If we consider best practices instead of multiple RUN use single RUN.
For example
RUN apt-get update -yq \
&& apt-get install -y python3-dev build-essential -yq \
&& apt-get install curl -yq \
&& pip install -r requirements.txt \
&& apt-get purge -y --auto-remove gcc python3-dev build-essential
you can use multistage builds if you don't require git in your final image you can remove in final stage
Also if possible you can use alpine version also.
Try disabling recommended packages of APT with --no-install-recommends, you can read more about it from here.
Now the image is smaller:
FROM ubuntu:18.04 AS builder
RUN apt update -y
RUN apt install python3-pip -y
RUN apt install build-essential automake pkg-config libtool libffi-dev libgmp-dev -y
RUN apt install libsecp256k1-dev -y
RUN apt install openjdk-8-jre-headless -y
RUN apt install git -y
RUN apt install libkrb5-dev -y
RUN apt install vim -y
RUN mkdir /opt/app
RUN chown -R root:root /opt/app
COPY ["requirements.txt","/opt/app/requirements.txt"]
SHELL ["/bin/bash", "-c"]
WORKDIR /opt/app
RUN pip3 install -r requirements.txt && apt-get -y clean all
RUN mkdir /opt/app/
RUN chown -R root:root /opt/app/
RUN cd /opt/app/
RUN git clone -b master https://bitbucket.org/heroes/test.git
CMD ["bash","/opt/app/bin/connect.sh"]
I have a Dockerfile that is like:
FROM java:8
LABEL maintainer="CMS"
RUN apt-get install python-pip
RUN pip install awscli
....
.....
[Error: Unable to locate package python-pip]
My end goal is to have java8 and aws-cli installed. Also I don't want to use curl statements in the Dockerfile. Also I don't want to use the plain ubuntu image.
How should I go about doing it?
The error says Pip is not installed. Try installing it properly. If installed try executing same commands to verify.
try to update your docker file to
FROM java:8
LABEL maintainer="CMS"
RUN apt-get update && apt-get install -y \
software-properties-common
RUN add-apt-repository universe
RUN apt-get update && apt-get install -y \
python3.4 \
python3-pip
RUN pip install awscli
....
.....
If you want to base it on top of openjdk:8 image, try the following:
FROM openjdk:8
RUN set -eux; \
apt-get update; \
apt-get install -y --no-install-recommends \
python3-setuptools \
python3-pip \
; \
rm -rf /var/lib/apt/lists/*
RUN pip3 --no-cache-dir install -U awscli
RUN apt-get clean
The other option is to use Alpine distribution:
FROM openjdk:8-alpine
RUN set -eux; \
apk add python3 ; \
pip3 --no-cache-dir install -U awscli
Sources:
https://bitbucket.org/vodkaseledka/openjdk8-awscli
https://bitbucket.org/vodkaseledka/openjdk8-awscli-alpine
Or you can get pre-builds from here:
https://hub.docker.com/repository/docker/savnn/openjdk8-awscli
https://hub.docker.com/repository/docker/savnn/openjdk8-awscli-alpine
this work for me: create dockerfile
FROM openjdk:8-alpine
RUN apk update;
RUN set -eux; \
apk add python3 ; \
pip3 --no-cache-dir install -U awscli; \
pip3 install --upgrade pip;
RUN apk add groff
use docker build . -t aws then run: docker run -it aws /bin/sh
I have create in docker 2 contains 1 to run the MSSQL server and the other a python container with the code to read data from an .xlsx file and inserting it into SQL server.
My Dockerfile has the below code :
FROM python:3.6-alpine
RUN apk update
RUN apk add gcc libc-dev g++ libffi-dev libxml2 unixodbc-dev mariadb-dev postgresql-dev
FROM continuumio/miniconda3
ADD test.py /
RUN apt-get update -y \
&& apt install python3 -y \
&& apt install python3-pip -y \
&& apt install python3-venv -y \
&& python3 -m venv venv
RUN apt-get -y install curl
**#Install FreeTDS and dependencies for PyODBC**
RUN apt-get update && apt-get install -y tdsodbc unixodbc-dev \
&& apt install unixodbc-bin -y \
&& apt-get clean -y
RUN apt-get update
RUN apt-get install -y tdsodbc unixodbc-dev
RUN apt install unixodbc-bin -y
RUN apt-get clean -y
RUN pip install pandas
RUN pip install pyodbc
RUN pip install DateTime
RUN pip install multiprocess
RUN pip install threaded
CMD [ "python", "./test.py" ]
It compiles successfully but fails every time i run the container with the below error :
pyodbc.Error: ('01000', "[01000] [unixODBC][Driver Manager]Can't open lib 'ODBC Driver 17 for SQL Server' : file not found (0) (SQLDriverConnect)")
I have been trying this for days but found no resolution.
Believe I need to install ODBC driver 17, if so how do I add it to my Dockerfile?