I want to install nginx and mysql in same image. I start out with a mysql image with the plan to install docker using dockerfile.
Here is my dockerfile:
FROM mysql:latest
ENV MYSQL_ROOT_PASSWORD=HelloWorld \
MYSQL_DATABASE=content
RUN apt update
RUN apt install nginx -y
COPY nginx.conf /etc/nginx/nginx.conf
This starts the mysql db perfectly and nginx also gets installed. Unfortunately, nginx doesn't start. To start nginx I also added another command in the docker file:
CMD service nginx start
After adding this line in the dockerfile, the container closes after creation. What am I doing wrong here?
I am using below command to start container with above image:
docker run -it -p 3306:3306 -p 8080:80 -p 8081:443 --name mycontainer myimage
it's best to run each process in a separate container. but if you wanna do that, you should create a bash file to start MySQL and Nginx. finally, you should use that bash file as the ENTRYPOINT of your image/container
I have from issue running mysql using Dockerfile
FROM mysql:latest
# Add a database
ENV MYSQL_DATABASE some_table_name
ENV MYSQL_ROOT_PASSWORD some_password
ADD some_table.sql /docker-entrypoint-initdb.d
ENTRYPOINT /bin/bash
Building an image works for this code but mysql service is not found in the container when I try to run service mysql start. mysqld command would not run due to some root security issues. Is anyone able to help? Thank you.
Remove the ENTRYPOINT
build and run the container.
Run another process to check inside the container name like:
docker exec -ti {containername} mysql -u root -p
This will check the password is set right. Then SHOW CREATE TABLE {db.tablename}
I am trying to give user a web interface in which , user can write a query and then i will be executing that query on my server.
I am using the following MySQL docker image with the latest tag i.e. mysql:latest
https://hub.docker.com/_/mysql/
So i am runnig the docker image using this command
docker run -it --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -v /root/ServerCode/:/usercode mysql /bin/bash
My root/ServerCode directory contains a script which i want to use for running mysql server and user's query.
My script is
#!/bin/bash
set -e
/etc/init.d/mysqld start
It gives me error
bash: /etc/init.d/mysqld: No such file or directory
I have also tried using this
service mysqld start
It is also giving error
mysqld: unrecognized service
Edit:
#!/bin/bash
set -e
exec 1> $"/usercode/logfile.txt"
exec 2> $"/usercode/errors"
# These output and error files are in mounted folder which i check after running script
/etc/init.d/mysqld start // run sql server here
#here i want to run that query and then get out of conatiner `
The entyrypoint scipt only does the initdb if mysqld is the argument; in your case it sees bash and so skips the initdb and just runs bash with its arguments.
If you are just trying to run some setup scripts once mysql is running have you looked at /docker-entrypoint-initdb.d/?
Create a docker-compose.yml
version: '2'
services:
db:
image: mysql
container_name: mysql
restart: always
volumes:
- /var/db/startuphry/mysql:/var/lib/mysql
- ./conf/my.cnf:/etc/mysql/conf.d/settings.cnf
- ./conf/docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d
environment:
- MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD}
- MYSQL_DATABASE=${MYSQL_DATABASE}
- MYSQL_USER=${MYSQL_USER}
- MYSQL_PASSWORD=${MYSQL_PASSWORD}
ports:
- "${MYSQL_PORT}:3306"
Create a conf folder add the my.cnf file to it
[mysqld]
local-infile=0
Create folder docker-entrypoint-initdb.d inside conf folder and all sql files inside this folder
Tree looks likes this
|____docker-compose.yml
|____conf
|___my.cnf
|___docker-entrypoint-initdb.d
|___one.sql
|___two.sql
You can put any .sh files or .sql files in there and they will be run/imported before the mysql service is available outside the container.
Try running the "/etc/init.d/mysqld start" inside the mysql docker container.
/root/server is a host machine path . Mysql has been installed in container not in the host machine. Please run the "/etc/init.d/mysqld start " not in the host machine.
We are using Docker for mysql, We are facing the below error while running
Packet for query is too large (12884616 > 4194304). You can change this value on the server by setting the max_allowed_packet' variable.; nested exception is com.mysql.jdbc.PacketTooBigException: Packet for query is too large (12884616 > 4194304). You can change this value on the server by setting the max_allowed_packet' variable.
now we need to increase max_allowed_packet size in mysql configuration, Can anyone help me on docker command to increase max_allowed_packet.
As an argument to the container command:
docker run -it -e MYSQL_ROOT_PASSWORD=my-secret-pw mysql:5.7 --max-allowed-packet=67108864
See "Configuration without a cnf file" at https://hub.docker.com/_/mysql/, copied here for posterity:
Configuration without a cnf file Many configuration options can be
passed as flags to mysqld. This will give you the flexibility to
customize the container without needing a cnf file. For example, if
you want to change the default encoding and collation for all tables
to use UTF-8 (utf8mb4) just run the following:
$ docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:tag --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci
If you would like to see a complete list of available options, just run:
$ docker run -it --rm mysql:tag --verbose --help
When using docker-compose (as asked in the comments), add a command key with the arguments:
version: "3"
services:
data:
image: "mysql:5.7.20"
command: --max_allowed_packet=32505856 # Set max_allowed_packet to 256M (or any other value)
environment:
- MYSQL_ROOT_PASSWORD=password
- MYSQL_DATABASE=db
- MYSQL_USER=user
- MYSQL_PASSWORD=user_password
When using docker-compose (as asked in the comments), add a command key with the arguments, for example:
version: "3"
services:
data:
image: "mysql:5.7.20"
# Set max_allowed_packet to 256M (or any other value)
command: --max_allowed_packet=32505856
environment:
- MYSQL_ROOT_PASSWORD=password
- MYSQL_DATABASE=db
- MYSQL_USER=user
- MYSQL_PASSWORD=user_password
Whilst this works for the MySQL docker images, it may not work for all is it overwrites the default command.
More info: Docker Compose - Command
I think you should modify it in your Dockerfile like this :
RUN sed -ire 's/max_allowed_packet.*=.*/max_allowed_packet = YOURVALUE/g' /etc/mysql/my.cnf
I need to create Rails and Mysql containers with docker-compose. When I try to create links between containers with docker-compose up, I get
Cannot start container
9b271c58cf6aecaf017dadaf5b Cannot link to a non running container:
/puma_db_1 AS /puma_web_1/db
Files
Dockerfile
FROM ubuntu:14.04
RUN apt-get -y update
RUN apt-get -y install git curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev
RUN apt-get -y install libmysqlclient-dev
RUN git clone https://github.com/sstephenson/rbenv.git /root/.rbenv
RUN git clone https://github.com/sstephenson/ruby-build.git /root/.rbenv/plugins/ruby-build
RUN echo 'eval "$(rbenv init -)"' >> $HOME/.profile
RUN echo 'eval "$(rbenv init -)"' >> $HOME/.bashrc
RUN rbenv install 2.1.5
RUN rbenv global 2.1.5
RUN gem install rails -v 4.0.11
ADD app.tar.gz /home/
WORKDIR /home/app
RUN bundle install
EXPOSE 3000
CMD ["rails", "server", "-b", "0.0.0.0"]
docker-compose.yml
db:
image: mysql:latest
environment:
MYSQL_DATABASE: app_development
MYSQL_USER: mysql
DATABASE_PASSWORD: onetwo
ROOT_PASSWORD: onetwo
web:
build: .
command: bundle exec rails s -p 3000 -b '0.0.0.0'
ports:
- "4000:3000"
links:
- db
Most likely the db container fails to start.
Make sure it works fine by starting only the db service. You can do that with the following command:
docker-compose up db
If it appears the MySQL service is not running after this command, then you found the origin of your problem.
Not specifically related to MySQL but more the message ERROR: for <service> Cannot link to a non running container: /b2f21b869ccc_<dependency>_1 AS /<service>_1/<dependency>_1
I found that the dependency container had a different id than the one given (b2f21b869ccc in my example above)
Solved simply by running
docker-compose up -d --force-recreate <service>
which caused it to recreate the dependency and fix the link to the correct docker id
For me, it did not help running docker-compose up db.
This did the trick for me:
sudo service docker restart
and then continuing with docker-compose up (-d)
You might try out the new features of docker networking, To do this, You must remove the link parameter in your docker-compose.yml , and initialize the container with the --x-networking option.
docker-compose --x-networking up -d
To prevent docker generate random names for the containers, which are added to the /etc/hosts file of the respective network for every container, you can use the container_name: key in the docker-compose.yml
db:
container_name: db
image: mysql:latest
environment:
MYSQL_DATABASE: app_development
MYSQL_USER: mysql
DATABASE_PASSWORD: onetwo
ROOT_PASSWORD: onetwo
web:
container_name: web
build: .
command: bundle exec rails s -p 3000 -b '0.0.0.0'
ports:
- "4000:3000"
Issue:
I have gotten this error whenever docker-compose successfully
builds a set of Images, but one of those Imagesfails to
run (e.g. launch into its own Container).
In this case, I suspect the Image, underlying your
puma_db_1 Container, is failing to run. You can
find the name of this Image by running docker ps -a. That said, its name is most likely puma_db
Solution:
To get at the cause, you can try docker-compose up
<service_name> or docker-compose up db
Alternatively, I find the error message by running docker run
<image_name> more useful. In this case, that would be docker
run puma_db
I had the same problem for mssql.link, as I am not using local database (rather using the one we have on staging), all I had to do is just comment that line out by editing Dockerfile script:
# DOCKER_ARGS="${DOCKER_ARGS} --link mssql-server-linux:mssql.link"
This solution may help someone or may be no one, but it sorted it for me :)
If you started the container lets say X with a link --link keen_visvesvaraya and then once X is up the linked container was stopped, but X kept running . Now if you try to docker exec into X you get this error.
Yah solution is to restart.
I had the same problem with elasticsearch - symfony - and docker
Can not link to a non-running container:/43c1d3b410db_myindex_elasticsearch_1 AS /myindex_apache_1/elasticsearch
the solution is to delete the content of the data volume
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:5.5.2
Volumes:
- ./docker/volume/elasticsearch: /usr/share/elasticsearch/data
and run docker-composer up -d again.
You can use below command Because It's working for me
docker run --name standlone-mysql -e MYSQL_ROOT_PASSWORD=password -e MYSQL_DATABASE=test -e MYSQL_USER=root -e MYSQL_ROOT_PASSWORD=root -d mysql:5.6
you need to modify the db: in yml file to include "POSTGRES_HOST_AUTH_METHOD" in environment section
db:
environment:
POSTGRES_HOST_AUTH_METHOD: trust
I got same error when restart the service.
Cannot link to a non running container: /c7e8ba2cc034_<service1>_1 AS /<service2>/<srvice1>
In my case there is Exited service2, so remove the container (docker rm) and start the service 2.