Autosave: 2025-03-27 19:06:04

neuron/6d4cfb04-1e87-477a-91e9-34c360bfb8ad/Docker_cleanup.md

@@ -0,0 +1,66 @@
+---
+tags: [docker, procedural]
+created: Thursday, March 27, 2025
+---
+
+# Docker cleanup
+
+## Check Docker storage usage
+
+```sh
+sudo docker system df
+```
+
+## Unused volumes
+
+These are the biggest culprit when taking up server space.
+
+Use this command to clear them out:
+
+```sh
+sudo docker volume rm $(sudo docker volume ls -q -f dangling=true)
+```
+
+These are typically UUIDs and named anonymously which makes it hard to know what
+you are deleting.
+
+To avoid this, the best practice is to name the volumes in the Dockerfile and
+also label them to make it easier to tell what's doing what:
+
+```yml
+volumes:
+  nextcloud_data:
+    name: nextcloud_data
+    labels:
+      app: nextcloud
+      purpose: user_data
+
+services:
+  nextcloud:
+    volumes:
+      - nextcloud_data:/var/www/html
+```
+
+### Locations to check (even after deleting volume)
+
+```
+/var/lib/docker/image
+/var/lib/docker/containers
+/var/lib/docker/volumes
+/var/lib/docker/buildkit # build cache
+```
+
+## Unused images
+
+### Identify
+
+```sh
+sudo docker images --filter "dangling=tre"
+```
+
+### Delete
+
+```sh
+
+sudo docker rmi mariadb:latest
+```

neuron/6d4cfb04-1e87-477a-91e9-34c360bfb8ad/index.md

@@ -13,12 +13,13 @@ computer science.
 
 <a href="https://thomasabishop.github.io/eolas/tags">View tags</a>
  
-**Build ID:** d51b0102-d73a-44e4-ad82-a3be740837e0
+**Build ID:** 6d4cfb04-1e87-477a-91e9-34c360bfb8ad
 
-**Published:** Thu 27 Mar 2025 17:56:26
+**Published:** Thu 27 Mar 2025 19:06:00
 
 ### Recent edits 
 
+- [[Docker_cleanup]] 
 - [[d212acdb_from_free-software_to_open_source]] 
 - [[c8820974_Tor_prioritising_uptake]] 
 - [[What_can_the_ISP_see]] 
@@ -38,10 +39,9 @@ computer science.
 - [[Network_tunnels]] 
 - [[Capturing_program_error_in_Bash]] 
 - [[Check_if_value_null_in_Bash]] 
-- [[Associative_arrays_maps_in_Bash]] 
 
 
-### All notes (546) 
+### All notes (547) 
 
 - [[0716531c_rewilding_the_internet]] 
 - [[241fe1a3_the_Web_versus_modem_BBSs]] 
@@ -197,6 +197,7 @@ computer science.
 - [[Docker_CLI]] 
 - [[Docker_Compose]] 
 - [[Docker_architecture]] 
+- [[Docker_cleanup]] 
 - [[Docker_compose_and_Dockerfile_difference]] 
 - [[Docker_containers]] 
 - [[Docker_general_overview]] 

neuron/6d4cfb04-1e87-477a-91e9-34c360bfb8ad/tags.md

@@ -312,6 +312,7 @@ unlisted: true
 - [[Containerization]] 
 - [[Creating_a_Docker_image]] 
 - [[Docker_architecture]] 
+- [[Docker_cleanup]] 
 - [[Docker_CLI]] 
 - [[Docker_Compose]] 
 - [[Docker_compose_and_Dockerfile_difference]] 
@@ -867,6 +868,7 @@ unlisted: true
 - [[Disable_non-root_ssh_access]] 
 - [[Disk_info]] 
 - [[Disk_size_utilities]] 
+- [[Docker_cleanup]] 
 - [[Effective_logging_in_Git]] 
 - [[File_operations_in_Python]] 
 - [[File_system_error_handling_in_Python]] 

zk/Docker_cleanup.md

@@ -0,0 +1,66 @@
+---
+tags: [docker, procedural]
+created: Thursday, March 27, 2025
+---
+
+# Docker cleanup
+
+## Check Docker storage usage
+
+```sh
+sudo docker system df
+```
+
+## Unused volumes
+
+These are the biggest culprit when taking up server space.
+
+Use this command to clear them out:
+
+```sh
+sudo docker volume rm $(sudo docker volume ls -q -f dangling=true)
+```
+
+These are typically UUIDs and named anonymously which makes it hard to know what
+you are deleting.
+
+To avoid this, the best practice is to name the volumes in the Dockerfile and
+also label them to make it easier to tell what's doing what:
+
+```yml
+volumes:
+  nextcloud_data:
+    name: nextcloud_data
+    labels:
+      app: nextcloud
+      purpose: user_data
+
+services:
+  nextcloud:
+    volumes:
+      - nextcloud_data:/var/www/html
+```
+
+### Locations to check (even after deleting volume)
+
+```
+/var/lib/docker/image
+/var/lib/docker/containers
+/var/lib/docker/volumes
+/var/lib/docker/buildkit # build cache
+```
+
+## Unused images
+
+### Identify
+
+```sh
+sudo docker images --filter "dangling=tre"
+```
+
+### Delete
+
+```sh
+
+sudo docker rmi mariadb:latest
+```