Questions tagged [docker-compose]
Compose is a tool for defining and running multi-container Docker applications.
604
questions
87
votes
5
answers
148k
views
Configuring Docker to not use the 172.17.0.0 range
Due to problems with captive portals and the default Docker IP range I am trying to make Docker use the 198.18.0.0 range, instead of 172.17.0.0, which clashes with the captive portals used on the ...
- 1,206
81
votes
1
answer
226k
views
How does "restart: always" policy work in docker-compose?
I have docker compose file with PostgreSQL and my application, like this:
version: '3'
services:
postgresql:
image: postgres:9.6.6
ports:
- 9932:5432
expose:
- "5432"
...
- 913
46
votes
12
answers
78k
views
Check is container/service running with docker-compose
I am using the docker-compose.
Some commands like up -d service_name or start service_name are returning right away and this is pretty useful if you don't want the containers running to depend on ...
- 1,264
46
votes
4
answers
90k
views
How is Docker Compose version 2 "volumes" syntax supposed to look?
With Docker Compose v1.6.0+, there now is a new/version 2 file syntax for the docker-compose.yml file. The changes include a separate top level key named volumes. This allows to "centralize" volume ...
- 1,251
29
votes
5
answers
16k
views
Docker turn anonymous volume into named volume
I have tried out a docker image using the docker command line without specifying names for volumes. Now I found that I want to continue using this container/image but by defining the container in ...
- 403
22
votes
2
answers
33k
views
How and where to configure pm.max_children for php-fpm with Docker?
In a Web application with Nginx and PHP-FPM, I've noticed moments of slowness and analyzing the logs, I found this message, which appears from time to time:
[19-Nov-2017 19:24:09] WARNING: [pool www] ...
- 323
19
votes
6
answers
98k
views
Can not access mysql docker
I am using docker-compose to create mysql container.
I get host IP 172.21.0.2.
But when I connect mysql. I get error:
My docker-compose.yml:
version: '2'
services:
### Mysql container
mysql:
...
- 193
14
votes
2
answers
11k
views
Force Ansible to log off to refresh user groups
I'm setting up a server with Ansible and Docker. I'm currently learning both technologies, so please bear with me if I'm being overly stupid here.
In order to run run Docker commands, the user has to ...
- 295
14
votes
4
answers
72k
views
Why does docker-compose issue a "No such file or directory" when the file is there?
I am testing a bare metal recovery of my server which basically starts a set of docker container with my services. I recovered from a backup /etc/docker, where I keep all the configuration and ...
- 3,617
13
votes
1
answer
22k
views
Expose a Unix socket to the host system from inside from a Docker container
I would like to run aweb server inside a Docker container that listens to a Unix socket, instead of to a port. I'm finding a lot of results on sharing the Docker socket, but I don't think that's what ...
- 270
13
votes
2
answers
8k
views
Can not stop tzdata asking for user input during docker-compose build
I've tried several things including
ENV DEBIAN_FRONTEND=noninteractive
ENV TZ=Europe/Lnndon
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
But whatever I ...
- 341
12
votes
3
answers
33k
views
"docker-compose up" as root user or non-root user?
After reading some articles I'm still not sure about what user I should use to run a docker container. Are there any security concerns when running a docker container as root user? Is it ok to run ...
- 191
11
votes
5
answers
14k
views
Is there any way to run Postfix in foreground?
Is there any way to run Postfix in foreground?
I want to run Postfix as PID 1 in docker. I don't want to use any bash shell, supervisorD, or any wrapper to start it.
I just want to know if there is ...
- 4,289
11
votes
2
answers
12k
views
docker-compose for nginx and nodejs server
I have the following docker-compose.yml file:
version: '3'
services:
server:
build:
context: ../../
dockerfile: ./packages/website/Dockerfile
command: node ...
- 247
11
votes
3
answers
30k
views
How do I give a docker container its own routable IP on the original network?
Main question
Imagine this scenario.
A network of 192.168.0.0/24.
A computer with hostname 'Docker-Host' is running a docker engine at
192.168.0.2
'Docker-Host' has sshd server running
On 'Docker-...
- 263
11
votes
1
answer
6k
views
How to do docker-compose down without the config file that made the up?
When you do docker-compose up, it's based on a docker-compose.yml file.
This usually brings up a network, builds and runs multiple services. If you do the up with the -d flag, the docker-compose ...
- 365
10
votes
2
answers
24k
views
What are proper iptables Rules for Docker Host?
I have Ubuntu server with Docker to serve MySQL and SSH/SFTP and I need all ports except 3306 and 22 to be firewalled, pretty standard and trivial requirement, right?
Now, I managed to find a sort of ...
- 820
9
votes
3
answers
31k
views
nginx and php-fpm: "Primary script unknown" while reading response header from upstream
I want pass any api/* route to php-fpm. Specifically to index.php as I use Symfony. This is the only route that should use php. Anything else will be loaded from /usr/share/nginx/html/public (just ...
- 351
9
votes
2
answers
15k
views
Configure php-fpm to access environment variables in docker
I'm running php7-fpm in a docker container. However my php scripts aren't able to access environments variables set in my docker-compose file. getenv('MY_ENV_VAR') returns FALSE.
I've changed /etc/...
- 291
9
votes
1
answer
6k
views
connection between two docker containers of two stacks
I am building on two projects which share some common data. The services of the two projects are built from two docker-compose YML files. I want to access the MySQL server specified in one stack from ...
- 233
9
votes
1
answer
10k
views
How to prevent docker containers auto-start at daemon start in Windows? [closed]
I am using Docker and its docker-compose functionalities on Windows 10.
Right now when I run the command docker-compose up -d to start some containers in the background, the containers started will ...
- 211
8
votes
2
answers
13k
views
Where is docker volume stored in the host computer for docker-compose?
Consider the following docker-compose file
version: "2"
services:
postgres:
image: postgres:9.6
volumes:
- ./vol_folder:/var/lib/postgresql
ports:
- "5432:5432"
Here is my ...
- 81
8
votes
3
answers
39k
views
CryptographyDeprecationWarning: Python 2 is no longer supported by the Python core team
I'm trying to run docker-compose (which was installed via pip), yet running into following error:
# pip install --quiet docker-compose
# docker-compose ps
/usr/local/lib/python2.7/dist-packages/...
- 13.2k
8
votes
2
answers
6k
views
How to prevent docker-compose appending hashes to created container names?
I have a server with several lxc containers. In some of the containers there is a docker installed. Usually a docker compose action in these LXC containers results in container names with the format ...
- 373
8
votes
1
answer
9k
views
How to forward Docker container logs to ELK?
I would like to know what is the easiest way to forward my docker container logs to an ELK server, so far the solutions I have tried after having searched the internet didn't work at all.
Basically ...
- 193
7
votes
2
answers
35k
views
Docker + Nginx + PHP-FPM error: [emerg] 1#1: host not found in upstream [closed]
I have a docker setup for LEMP stack that I cloned from this repo.
Everything works nicely on my development machine running window 10, but when I push the image to docker hub and pull it on my VPS ...
- 287
7
votes
1
answer
3k
views
WEBRTC MCU/SFU inside kubernetes - Port Ranges?
I am using janus-gateway as a webrtc media server for group videocalling. Previously I had deployed it in a single node using docker-compose but now I want to be able to scale it horizontally. For ...
- 171
7
votes
4
answers
22k
views
Using iptables rules aren't working with Docker container
Just set up an ElasticSearch container to use with company's Laravel app.
Creating docker-compose.yml and running it is flawless and straight-forward but the issue occurs when I want to firewall this ...
- 820
6
votes
2
answers
17k
views
EC2 Instance Freezes
I am experiencing sudden freezes in one particular instance.
Here some details of the instance:
Type: t2.micro
Region/av. zone: us-west-2b
OS: amzn-ami-hvm-2018.03.0.20180811-x86_64-gp2 (ami-a0cfeed8)
...
- 63
6
votes
2
answers
33k
views
Why is there no php.ini file when I install PHP in a docker container?
I'm using docker-compose to setup a minimal nginx + php-fpm application but for some reason there is no php.ini file on the docker container (I know because phpinfo() says Loaded Configuration File: (...
- 93
6
votes
1
answer
12k
views
docker-compose exec composer as user
I have a docker-compose setup working perfect on my local machine for my symfony projects with nginx, php7-fpm and mysql.
I often need to install new packages via composer, so I just deliver the ...
- 241
6
votes
1
answer
2k
views
How to secure a docker host to not allow rooting
I am trying to make docker on a server more secure. The main problem is that most people say "if a person has access to docker, they can be root too" for an administrator point of few this is not ...
- 235
6
votes
0
answers
6k
views
Is there a way to flush docker's embedded dns cache?
I'm working in an environment where sometimes the DNS server flakes out and tells you it can't resolve a host (eg. lookup of "github.com" fails). It's transient, and usually recovers fairly quickly. ...
- 233
5
votes
2
answers
16k
views
set time period to restart a container with docker-compose
how would you do to restart the container service every 60 seconds I tried sleep but it doesn't work for me:
spark:
image: jaegertracing/spark-dependencies
environment:
- STORAGE=...
user482363
5
votes
2
answers
21k
views
nginx can't find /etc/letsencrypt/options-ssl-ngin.conf file
I'm trying to serve a python-django webapp using a linux box (running ubuntu 18.04) with nginx, gunincorn, letsencrypt and docker. After following a number of online tutorials I have been successful ...
- 51
5
votes
1
answer
9k
views
nginx won't serve json file unless specifying .json in url
I have the following nginx.conf file:
server {
listen 8080;
server_name dummy_server;
root /usr/share/nginx/html;
location / {
if ($request_method = 'OPTIONS') {
...
- 53
5
votes
1
answer
4k
views
Podman: Method to convert docker-compose files to systemd unit files
I'm migrating away from docker towards podman (not going straight for kubernetes, as that would definitely be overkill at this point).
Now, many an elegant configuration can be had as docker-compose ...
- 500
5
votes
1
answer
46k
views
How do I access nginx server logs from within Docker?
I have Nginx routing requests from the browser to either the Express API or my react server, however, in the console I continue to get xhr requests that are just pending and then timeout with 502 bad ...
- 229
5
votes
2
answers
4k
views
How to forward application logs from Docker containers to ELK
I'm trying to centralise logging in an environment that using multiple application technologies (Java, Rails and various DBs).
We want to developers to bring up stacks with Docker Compose, but we ...
- 3,489
5
votes
0
answers
6k
views
docker-compose `restart: always` randomly not working
I administer a few Debian servers with Docker CE installed and docker-compose orchestrating several services (roughly 20 containers per machine)..
Every single service is configured with restart: ...
- 295
4
votes
3
answers
15k
views
Docker Compose returns error "networks have overlapping IPv4"
starting by saying I am totally new to Docker and I am not yet familiarized with the Docker ecosystem.
What I try to perform is to create a docker-composer.yml to be used in my local dev environment ...
- 209
4
votes
2
answers
23k
views
Docker based reverse proxy with NginX for multiple domains
I'm trying to create a docker based multi-container setup with a reverse proxy for multiple domains to serve, where the websites, the databases and the nginx based reverse proxy run in containers, but ...
- 223
4
votes
3
answers
13k
views
Docker PostgreSQL change database encoding to UTF-8
I want to run via docker-compose a postgres container which has COLLATE and CTYPE 'C' and database encoding 'UTF-8'. But this looks to be impossible.
This is the part on the docker-compose.yml:
...
- 123
4
votes
1
answer
3k
views
Error: could not determine PostgreSQL version from '11.7'
I found a Django project and failed to get it running in Docker container in the following way:
git clone https://github.com/hotdogee/django-blast.git
I have the following Dockerfile:
FROM python:2
...
- 225
4
votes
1
answer
991
views
Why isn't firewalld filtering the services running in my Docker containers?
My services were filtered correctly after migrating from iptables to firewalld and updating the rules with firewall-cmd. Then I moved all services to containers using Docker, and ran everything with ...
4
votes
3
answers
8k
views
configure minio in docker to use https
This is my docker-compose.yml:
version: '3.7'
services:
minio:
image: minio/minio
command: server -C /etc/minio --address ":9000" --console-address ":9001" /data
...
- 143
4
votes
1
answer
11k
views
Nginx Docker container always restarting
My current docker-compose.yml looks like this:
version: '3'
services:
testsite-nginx:
image: nginx:alpine
container_name: test_site_nginx
restart: unless-stopped
...
- 191
4
votes
2
answers
5k
views
Setup wordpress container in subdirectory with nginx and mariadb
Ok guys here is the problem: i have my webserver serving a website, a cms and mobile app api using a subdirectory approach like this
localhost -> site
localhost/cms
localhost/api
everything is ...
- 143
4
votes
1
answer
681
views
Docker bridge network shadows IP of SSH client, how to recover gracefully?
We're running a RHEL 7 VM with Docker to host a couple of internal services. Last time I ran docker-compose up to spin up a new Docker container, I lost my SSH connection to the server and could also ...
- 51
4
votes
1
answer
6k
views
How to move docker-compose containers stack to another host
I have a project running on a host using docker compose.
Can anyone advise me on how can I move the docker-compose containers to another host?
