Nginx Download Docker !!BETTER!!
Tonette Bynd
By default, Nginx looks in the /usr/share/nginx/html directory inside of the container for files to serve. We need to get our html files into this directory. A fairly simple way to do this is use a mounted volume. With mounted volumes, we are able to link a directory on our local machine and map that directory into our running container.
We start building our custom image by using a base image. On line 1, you can see we do this using the FROM command. This will pull the nginx:latest image to our local machine and then build our custom image on top of it.
The Dockerfile sets up a multi-stage build. We first build our React.js application and then we copy the nginx.conf file from our local machine into the image along with our static html and javascript files that were built in the first phase.
Why do you need an editor inside the container? You should be writing your own Dockerfile and/or docker-compose file that takes the stock nginx container image and customizes it to your liking. Then you just launch that.
Please note that you will need to restart the container using the docker restart command when you make any changes to your configuration file after starting the container. This is because Nginx does not hot reload if its configuration file is changed:
Yes I'm the admin but I'm a novice. I used various guides to get set up. For example, I deduce that the command I'm running is incorrect, and the proper one probably starts with docker-compose, but I wouldn't know what the proper command is.
Previously I created similar setup in Docker Compose. I used the same config for Telegraf and log format for Nginx. Everything worked just fine. For Docker Swarm I changed one thing - in Docker Compose I used folder binding to persist & share Nginx logs between Nginx and Telegraf containers, now in Docker Swarm I am using docker local volume for that. I also checked that both containers have an access to log file - Nginx is writing logs as expected and from Telegraf container I can tail this file and read logs.
Thing is there's no nginx running locally on the server. It may be installed but it's not actually running. It's in Docker. I can edit the local nginx.conf but if it's not started as a service on the OS itself, would those changes still affect what's running in the container? Attached screenshot shows:
From there you can browse around the files and see what is running. When a container starts, it has a primary process, and if that process stops for any reason, the container is removed by the host/docker engine. So for nginx, it will start the container with the nginx process, and it will be assigned PID 1. So if you run `kill 1` you will suddenly find you are booted out of the shell and the container is gone (it's actually just turned off, you can start it again, but i digress). Why do I mention all of this? To say you can't just restart the nginx process, if it is killed, the container will turn off. Luckily, nginx supports signals, and you can run `nginx -s reload` and it will reload without terminating the main parent process. And why do I mention all of this? So that you can proof-of-concept show yourself that this will all work....
as a final wrap-up, now that you know how to check the problem, fix it, and confirm it works... you just have to make sure it persists. So, get a full copy of your nginx.conf file from the container `cat /etc/nginx/nginx.conf` and copy it onto your host into a file.
either find the Dockerfile that was used to create your nginx image and provide an 'nginx.conf' file to it via the `COPY [src] [dest]` format at build time, or, assuming you are booting this image with docker-compose, you could just mount over the top of the nginx.conf file in the container whenever it runs, which would look something like:
Last night it all stopped working. No remote access. After investigation I found nginx docker had restarted and its network was now on 172.20.0.0/24. This subnet was not in the trusted proxies. So i added it and now all is well again.
@tmjpugh you are absolutely spot on. This is docker-compose and I did delete the images due to an issue and recreated them with docker-compose up -d. I had no idea docker creates new networks each time but then I guess that is pretty obvious. Would a subnet mask of 172.0.0.0/24 in trusted proxies - or is that either/both (a)bad practice, (b)not possible anyway.
so would your command create a bridge between my local network on 192.168.0.0/24?
and
the gateway 172.0.3.1 - is that something docker provides or do I need to set it up because currently nothing has that ip to my knowledge?
Your original problems was compose created a new network with new IPs and removed the old. to prevent this you will create a docker network, not managed by compose, that will survive compose up/down (stack restarts)
with this nginx will keep a static IP on the network and you can just trust the single IP.
Also, in nginx you can reach HA at homeassistant:8123. You cannot trust hostnames but HA will still be able to ping nginx at nginx. And as an addional example if you have a seperate zwavejs container and created a network for that homeassistant could be seen on that network but nginx would not since that network was not defined for it
so bridge is incorrect? extrrnal is correct? and if I use the same network config in other docker_-compiose files, why will only these two services see it nexus i want that network to be for all containers.?
Where I was going wrong was using localhost as the argument to the command in the mosquito client. After reading the docker network reference and only on the back of your help and explanations, did I grasp that localhost is the container and not the docker host. So I had to assign an IP to the broker and use that in the client. I also had to set the IP as a listener in mosquitto.conf
EDIT: I do not believe I can get away without using the broker IP in HA MQTT integration. I was using localhost but of course that is scoped only to the container HA is running in. Kind of need a reference to the docker network as docker_local or something?? Then I can use docker_local:1883 in the mqtt integration and if the IP changes for the broker then it wont break anything. Not sure if this is possible though?
Why should i don't need the location parameter in nginx? I have several services and they have all its own location block (or more). NextCloud and SeaFile for example. Please let me know so I can learn something...
1st server: Nginx, NextCloud and SeaFile are running (fine btw)
2nd server: Picapport is running here, nginx from the first server do the reverse proxy
3rd server: this is for docker and joplin server (the only service at the moment): This should also be proxied by nginx from the first server because he already manages all other services
However, you would need the reverse proxy running on the server the docker is running on, that's way more managable and "clean", so to speak, a certain level of seperation does wonders in the long run.
To see how nginx is configured on a default Ubuntu install I installed it sudo apt-get install nginx and took a look at the configuration file /etc/nginx/nginx.conf. It includes these two lines at the bottom of the configuration:
The compose file defines an application with four services redis, web1, web2 and nginx.When deploying the application, docker-compose maps port 80 of the web service container to port 80 of the host as specified in the file.
You can also log in with docker login. For example, you might have assigned a service principal to your registry for an automation scenario. When you run the following command, interactively provide the service principal appID (username) and password when prompted. For best practices to manage login credentials, see the docker login command reference:
Always specify the fully qualified registry name (all lowercase) when you use docker login and when you tag images for pushing to your registry. In the examples in this article, the fully qualified name is myregistry.azurecr.io.
Execute the following docker run command to start a local instance of the Nginx container interactively (-it) on port 8080. The --rm argument specifies that the container should be removed when you stop it.
To remove images from your Azure container registry, you can use the Azure CLI command az acr repository delete. For example, the following command deletes the manifest referenced by the samples/nginx:latest tag, any unique layer data, and all other tags referencing the manifest.
The Az.ContainerRegistry Azure PowerShell module contains multiple commands for removing images from your container instance. Remove-AzContainerRegistryRepository removes all images in a particular namespace such as samples:nginx, while Remove-AzContainerRegistryManifest removes a specific tag or manifest.
In the following example, you use the Remove-AzContainerRegistryManifest cmdlet to delete the manifest referenced by the samples/nginx:latest tag, any unique layer data, and all other tags referencing the manifest.
Basically managed to do everything I wanted to do set-up wise. Last step is setting up SSL certs for my site. It wasn't as straightforward as I was hoping, I haven't been able to find any clear guides on what to do regarding setting up Cerbot and having it on automatic renewal through a docker container. Lot of the shorter tutorials seem to use custom Certbot docker images which I'm not sure why they're different, or they have custom shell scripts that make dummy certs and delete them for some reason. The Certbot docker hub page is kind of devoid of any official instructions as well...
One of the main perks of using Docker is being able to run a single command such as docker-compose up and have everything you need running to serve your application, so there must be a good reason to break away from that.
When nginx is running directly on your host this is a non-issue. You can have your Dockerized web apps all running on their own ports and have a separate nginx config for each app. Since nginx is only running once you never encounter a port conflict on 80 / 443.
df19127ead