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--- admin_grundlagen:docker:docker_volumes_by_examples [2026/05/08 11:34]
peter_rossbach2 angelegt
+++ admin_grundlagen:docker:docker_volumes_by_examples [2026/05/29 14:01] (aktuell)
peter_rossbach2
@@ Zeile 1: / Zeile 1: @@
 ===== Docker volumes by examples =====
-==== NFS ====
+==== Start nginx with local path ====
+Create Website content:
+<code bash>
+mkdir -p htdocs
+cat >htdocs/index.html <<EOF
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <title>Docker Local Path Nginx</title>
+</head>
+<body>
+  <h2>Hello from Nginx container of `hostname`</h2>
+</body>
+</html>
+EOF
+</code>
+<code bash>
+docker run -d --name nginx-local \
+-v $(pwd)/htdocs:/usr/share/nginx/html nginx
+IPADDRESS=$(docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' nginx-local)
+# Alternative with jq
+# docker inspect nginx-local| jq -r '.[0].NetworkSettings.Networks.bridge.IPAddress'
+curl $IPADDRESS
+</code>
+==== Start nginx with docker volumes ====
+Prepare docker managed volume:
+<code bash>
+docker volume create htdocs-volume
+docker container run \
+    -v $(pwd)/htdocs:/htdocs \
+    -v htdocs-volume:/htdocs1  \
+    -ti --rm alpine /bin/sh
+cp htdocs/index.html htdocs1
+exit
+</code>
+Use docker managed volume:
+<code bash>
+docker run -d --name web-server \
+-v htdocs-volume:/usr/share/nginx/html nginx
+# check content
+docker exec web-server ls /usr/share/nginx/html
+docker run --rm -ti --volumes-from web-server alpine /bin/sh
+ls /usr/share/nginx/html
+exit
+</code>
+Inspect volumes:
+<code bash>
+docker volume ls
+docker volume inspect htdocs-volume
+#docker volume rm htdocs-volume
+</code>
+==== Start with mount options and publish nginx ====
+<code bash>
+docker run \
+  --mount type=bind,src=$(pwd)/htdocs,dst=/usr/share/nginx/html,readonly \
+  -p 8080:80 \
+  nginx-public
+</code>
+==== Start local mysql ====
+<code bash>
+# hostpath bind mount
+docker run --name mysql-db \
+  -v $(pwd)/datadir:/var/lib/mysql
+  -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:8.4.9
+# Access DB
+# Stop db
+docker stop mysql.db
+docker rm mysql-db
+# or docker managed volume /var/lib/docker/volumes
+docker volume create mysql-data
+docker run --name mysql-db \
+  -v mysql-data:/var/lib/mysql
+  -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:8.4.9
+</code>
+++++ NFS |
+  - https://oneuptime.com/blog/post/2026-01-30-docker-nfs-volumes/view
+  - https://docs.docker.com/engine/storage/volumes/
 Install NFS kernel server
@@ Zeile 30: / Zeile 135: @@
 sudo exportfs -v
 </code>
+Create docker volume with a NFS Share:
+<code bash>
+docker volume create \
+  --driver local \
+  --opt type=nfs \
+  --opt o=addr=192.168.1.100,rw,nfsvers=4.1 \
+  --opt device=:/exports/shared \
+  shared-data
+</code>
+Use volume inside docker-compose service:
+<code bash>
+mkdir -p web
+cd web
+cat >docker-compose.yml <<EOF
+services:
+  app:
+    image: nginx:alphine
+    volumes:
+      - shared-data:/usr/share/nginx/html
+    deploy:
+      replicas: 3
+  processor:
+    image: python:3.11-slim
+    volumes:
+      - shared-data:/data
+    command: python -c "while True: pass"
+volumes:
+  shared-data:
+    driver: local
+    driver_opts:
+      type: nfs
+      o: addr=192.168.1.100,rw,nfsvers=4.1,soft,timeo=300
+      device: ":/exports/shared"
+EOF
+docker compose uo -d
+# access service with curlimages/curl many times
+docker run --rm --network default-web curlimages/curl curl -s app
+...
+# check logs
+# down
+docker compose down
+</code>
+Use nfs share with docker --mount directly:
+<code bash>
+docker run -d \
+  --name web \
+  --mount type=volume,volume-driver=local,\
+volume-opt=type=nfs,\
+volume-opt=o=addr=192.168.1.100,\
+volume-opt=device=:/exports/shared,\
+dst=/usr/share/nginx/html \
+  nginx:alpine
+</code>
+++++

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