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1-get-base
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main
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README.md
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README.md
@ -1,151 +1,2 @@
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# FIXME
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# nginx
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Search and replace all mentions of FIXME with sensible content in this file and in [compose.yaml](compose.yaml).
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# Nginx Docker Compose files
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Docker Compose files to spin up an instance of Nginx.
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Nginx comes with an optional sidecar container we're calling `ping` whose purpose is to do health checks. If you want Nginx to bind to a specific virtual IP address you're going to want to use `ping`, it will quite literally ping the virtual IP address for you and report a successful health check once the address becomes reachable. Only then will Nginx start up. Management on your Docker host of a virtual IP address can happen via `iproute2`/`ip addr add`, `keepalived` or similar mechanisms and is out of scope of this repository.
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Feel free to run Nginx without `ping` if you have no need for a virtual IP address. Continue reading for details on how to start with and without the `ping` sidecar container.
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# How to run
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Add a `COMPOSE_ENV` file and save its location as a shell variable along with the location where this repo lives, here for example `/opt/containers/nginx` plus all other variables. At [env/fqdn_context.env.example](env/fqdn_context.env.example) you'll find an example environment file.
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When everything's ready start Nginx with Docker Compose, otherwise head down to [Initial setup](#initial-setup) first.
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## Environment
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```
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export COMPOSE_DIR='/opt/containers/nginx'
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export COMPOSE_CTX='ux_vilnius'
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export COMPOSE_PROJECT='nginx-'"${COMPOSE_CTX}"
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export COMPOSE_FILE="${COMPOSE_DIR}"'/compose.yaml'
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export COMPOSE_OVERRIDE="${COMPOSE_DIR%/}"'/compose.override.yaml'
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export COMPOSE_ENV=<add accordingly>
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```
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## Context
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On your deployment machine create the necessary Docker context to connect to and control the Docker daemon on whatever target host you'll be using, for example:
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```
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docker context create fully.qualified.domain.name --docker 'host=ssh://root@fully.qualified.domain.name'
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```
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## Build
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FIXME We build the `nginx` image locally. Our adjustment to the official image is simply adding `/tmp/nginx` to it. See [build-context/nginx/Dockerfile](build-context/nginx/Dockerfile). We use `/tmp/nginx` to bind-mount a dedicated ZFS dataset for the application's `tmpdir` location.
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```
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docker compose --project-name "${COMPOSE_PROJECT}" --file "${COMPOSE_FILE}" --file "${COMPOSE_OVERRIDE}" --env-file "${COMPOSE_ENV}" --profile 'build-nginx' build
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```
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## Pull
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FIXME Rewrite either [Build](#build) or this paragraph for which images are built and which ones pulled, `--profile 'full'` may not make sense FIXME Pull images from Docker Hub verbatim.
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```
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docker compose --project-name "${COMPOSE_PROJECT}" --file "${COMPOSE_FILE}" --env-file "${COMPOSE_ENV}" --profile 'full' pull
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```
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## Copy to target
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Copy images to target Docker host, that is assuming you deploy to a machine that itself has no network route to reach Docker Hub. Copying in its simplest form involves a local `docker save` and a remote `docker load`. Consider the helper mini-project [quico.space/Quico/copy-docker](https://quico.space/Quico/copy-docker) where [copy-docker.sh](https://quico.space/Quico/copy-docker/src/branch/main/copy-docker.sh) allows the following workflow:
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```
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source "${COMPOSE_ENV}"
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# FIXME Docker Hub image name with or without slash? FIXME
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for image in 'nginx:'"${NGINX_VERSION}" 'ping:'"${PING_VERSION}"; do
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copy-docker.sh "${image}" fully.qualified.domain.name
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done
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```
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## Start
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```
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docker --context 'fully.qualified.domain.name' compose --project-name "${COMPOSE_PROJECT}" --file "${COMPOSE_FILE}" --env-file "${COMPOSE_ENV}" --profile 'full' up --detach
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```
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# Initial setup
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We're assuming you run Docker Compose workloads with ZFS-based bind mounts. ZFS management, creating a zpool and setting adequate properties for its datasets is out of scope of this document.
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## Datasets
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Create ZFS datasets and set permissions as needed.
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* Parent dateset
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```
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zfs create -o mountpoint=/opt/docker-data 'zpool/docker-data'
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```
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* Container-specific datasets
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```
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zfs create -p 'zpool/docker-data/nginx-'"${COMPOSE_CTX}"'/nginx/data/db'
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zfs create -p 'zpool/docker-data/nginx-'"${COMPOSE_CTX}"'/nginx/data/logs'
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zfs create -p 'zpool/docker-data/nginx-'"${COMPOSE_CTX}"'/nginx/config'
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zfs create -p 'zpool/docker-data/nginx-'"${COMPOSE_CTX}"'/ping/data/db'
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zfs create -p 'zpool/docker-data/nginx-'"${COMPOSE_CTX}"'/ping/data/logs'
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zfs create -p 'zpool/docker-data/nginx-'"${COMPOSE_CTX}"'/ping/config'
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```
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FIXME When changing bind mount locations to real ones remember to also update `volumes:` in [compose.yaml](compose.yaml) FIXME
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* Create subdirs
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```
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mkdir -p '/opt/docker-data/nginx-'"${COMPOSE_CTX}"'/nginx/'{'.ssh','config','data','projects'}
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```
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* Change ownership
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```
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chown -R 1000:1000 '/opt/docker-data/nginx-${COMPOSE_CTX}/nginx/data/'{*,.*}
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```
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## Additional files
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Place the following files on target server. Use the directory structure at [build-context](build-context) as a guide, specifically at `docker-data`.
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FIXME Add details about files that aren't self-explanatory FIXME
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```
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build-context/
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├── nginx
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│ ├── docker-data
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│ | └── config
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│ │ └── nginx.cfg
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│ ├── ...
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│ └── ...
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└── ping
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├── docker-data
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| └── config
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│ └── ping.cfg
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├── ...
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└── ...
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```
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When done head back up to [How to run](#how-to-run).
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# Development
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## Conventional commits
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This project uses [Conventional Commits](https://www.conventionalcommits.org/) for its commit messages.
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### Commit types
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Commit _types_ besides `fix` and `feat` are:
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- `refactor`: Keeping functionality while streamlining or otherwise improving function flow
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- `docs`: Documentation for project or components
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### Commit scopes
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The following _scopes_ are known for this project. A Conventional Commits commit message may optionally use one of the following scopes or none:
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- `nginx`: A change to how the `nginx` service component works
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- `ping`: A change to how the `ping` service component works
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- `build`: Build-related changes such as `Dockerfile` fixes and features.
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- `mount`: Volume or bind mount-related changes.
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- `net`: Networking, IP addressing, routing changes
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- `meta`: Affects the project's repo layout, file names etc.
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@ -1,14 +0,0 @@
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# For the remainder of this Dockerfile EXAMPLE_ARG_FOR_DOCKERFILE will be
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# available with a value of 'must_be_available_in_dockerfile', check out the env
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# file at 'env/fully.qualified.domain.name.example' for reference.
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# ARG EXAMPLE_ARG_FOR_DOCKERFILE
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# Another env var, this one's needed in the example build step below:
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# ARG NGINX_VERSION
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# Example
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# FROM "nginx:${NGINX_VERSION}"
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# RUN apt-get update && \
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# apt-get -y install \
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# somepackage-6.q16-6-extra && \
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# rm -rf /var/lib/apt/lists/*
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@ -1,14 +0,0 @@
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# For the remainder of this Dockerfile EXAMPLE_ARG_FOR_DOCKERFILE will be
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# available with a value of 'must_be_available_in_dockerfile', check out the env
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# file at 'env/fully.qualified.domain.name.example' for reference.
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# ARG EXAMPLE_ARG_FOR_DOCKERFILE
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# Another env var, this one's needed in the example build step below:
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# ARG PING_VERSION
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# Example
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# FROM "ping:${PING_VERSION}"
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# RUN apt-get update && \
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# apt-get -y install \
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# somepackage-6.q16-6-extra && \
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# rm -rf /var/lib/apt/lists/*
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@ -1,11 +0,0 @@
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services:
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common-settings:
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environment:
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TZ: "${TIMEZONE:-Etc/UTC}"
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logging:
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driver: "json-file"
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options:
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max-size: "10m"
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max-file: "10"
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compress: "true"
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restart: "${RESTARTPOLICY:-unless-stopped}"
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@ -1,19 +0,0 @@
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services:
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nginx-build:
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image: "nginx:${NGINX_VERSION}"
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profiles: ["build", "build-nginx"]
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build:
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context: "build-context/nginx"
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dockerfile: Dockerfile
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args:
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EXAMPLE_ARG_FOR_DOCKERFILE: "${EXAMPLE_ARG_FROM_ENV_FILE}"
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NGINX_VERSION: "${NGINX_VERSION}"
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ping-build:
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image: "ping:${PING_VERSION}"
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profiles: ["build", "build-ping"]
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build:
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context: "build-context/ping"
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dockerfile: Dockerfile
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args:
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EXAMPLE_ARG_FOR_DOCKERFILE: "${EXAMPLE_ARG_FROM_ENV_FILE}"
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PING_VERSION: "${PING_VERSION}"
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72
compose.yaml
72
compose.yaml
@ -1,72 +0,0 @@
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services:
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nginx:
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# FIXME Docker Hub image name with or without slash? FIXME
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image: "nginx:${NGINX_VERSION}"
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container_name: "nginx-nginx-${CONTEXT}"
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networks:
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nginx-default:
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profiles: ["full", "nginx"]
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depends_on:
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ping:
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condition: service_healthy
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ulimits:
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nproc: ${ULIMIT_NPROC-65535}
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nofile:
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soft: ${ULIMIT_NPROC-65535}
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hard: ${ULIMIT_NPROC-65535}
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extends:
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file: common-settings.yml
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service: common-settings
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ports:
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# - "8080:80"
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volumes:
|
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||||||
# When changing bind mount locations to real ones remember to
|
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||||||
# also update "Initial setup" section in README.md.
|
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# - /opt/docker-data/nginx-${CONTEXT}/nginx/data/db:/usr/lib/nginx
|
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# - /opt/docker-data/nginx-${CONTEXT}/nginx/data/logs:/var/log/nginx
|
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# - /opt/docker-data/nginx-${CONTEXT}/nginx/config:/etc/nginx
|
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environment:
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# NGINX_USER: ${NGINX_USER}
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# NGINX_PASSWORD: ${NGINX_PASSWORD}
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ping:
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# FIXME Docker Hub image name with or without slash? FIXME
|
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image: "ping:${PING_VERSION}"
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container_name: "nginx-ping-${CONTEXT}"
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networks:
|
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nginx-default:
|
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profiles: ["full", "ping"]
|
|
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healthcheck:
|
|
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test: ["CMD", "fping", "--count=1", "${NGINX_VIP}", "--period=500", "--quiet"]
|
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interval: 3s
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timeout: 1s
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retries: 60
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start_period: 2s
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ulimits:
|
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nproc: ${ULIMIT_NPROC-65535}
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nofile:
|
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||||||
soft: ${ULIMIT_NPROC-65535}
|
|
||||||
hard: ${ULIMIT_NPROC-65535}
|
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extends:
|
|
||||||
file: common-settings.yml
|
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||||||
service: common-settings
|
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ports:
|
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# - "8080:80"
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volumes:
|
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||||||
# When changing bind mount locations to real ones remember to
|
|
||||||
# also update "Initial setup" section in README.md.
|
|
||||||
# - /opt/docker-data/nginx-${CONTEXT}/ping/data/db:/usr/lib/ping
|
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||||||
# - /opt/docker-data/nginx-${CONTEXT}/ping/data/logs:/var/log/ping
|
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||||||
# - /opt/docker-data/nginx-${CONTEXT}/ping/config:/etc/ping
|
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environment:
|
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||||||
# PING_USER: ${PING_USER}
|
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||||||
# PING_PASSWORD: ${PING_PASSWORD}
|
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||||||
networks:
|
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nginx-default:
|
|
||||||
name: nginx-${CONTEXT}
|
|
||||||
driver: bridge
|
|
||||||
driver_opts:
|
|
||||||
com.docker.network.enable_ipv6: "false"
|
|
||||||
ipam:
|
|
||||||
driver: default
|
|
||||||
config:
|
|
||||||
- subnet: ${SUBNET}
|
|
33
env/fqdn_context.env.example
vendored
33
env/fqdn_context.env.example
vendored
@ -1,33 +0,0 @@
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CONTEXT=ux_vilnius
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||||||
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||||||
|
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||||||
|
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||||||
# Set something sensible here and uncomment
|
|
||||||
# ---
|
|
||||||
# NGINX_VERSION=x.y.z
|
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||||||
# PING_VERSION=x.y.z
|
|
||||||
# NGINX_VIP=10.1.1.2
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
# Feel free to leave defaults. They apply while these vars are commented out
|
|
||||||
# ---
|
|
||||||
# RESTARTPOLICY=unless-stopped
|
|
||||||
# TIMEZONE=Etc/UTC
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
# Subnet to use for this Docker Compose project. Docker defaults to
|
|
||||||
# container networks in prefix 172.16.0.0/12 which is 1 million addresses in
|
|
||||||
# the range from 172.16.0.0 to 172.31.255.255. Docker uses 172.17.0.0/16 for
|
|
||||||
# itself. Use any sensible prefix in 172.16.0.0/12 here except for Docker's
|
|
||||||
# own 172.17.0.0/16.
|
|
||||||
# ---
|
|
||||||
SUBNET=172.30.95.0/24
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
# See 'compose.override.yaml' for how to make a variable available in
|
|
||||||
# a Dockerfile
|
|
||||||
# ---
|
|
||||||
# EXAMPLE_ARG_FROM_ENV_FILE=must_be_available_in_dockerfile
|
|
Loading…
x
Reference in New Issue
Block a user