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authorJulien Dessaux2021-03-11 19:47:26 +0100
committerJulien Dessaux2021-03-11 19:47:26 +0100
commit1a4981a826bb94c478c6f49721396ec03e02649c (patch)
treecbd779f6f8e36a28f4d6bd2788c21ce10d9ef122 /content/blog/docker
parentSeveral fixes (diff)
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First big articles reformatting now that I properly understand hugo
Diffstat (limited to 'content/blog/docker')
-rw-r--r--content/blog/docker/_index.md5
-rw-r--r--content/blog/docker/cleaning.md11
-rw-r--r--content/blog/docker/docker-compose-bridge.md15
-rw-r--r--content/blog/docker/migrate-data-volume.md11
-rw-r--r--content/blog/docker/shell-usage-in-dockerfile.md15
5 files changed, 35 insertions, 22 deletions
diff --git a/content/blog/docker/_index.md b/content/blog/docker/_index.md
deleted file mode 100644
index 18c3c33..0000000
--- a/content/blog/docker/_index.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-title: "Docker"
-linkTitle: "Docker"
-weight: 40
----
diff --git a/content/blog/docker/cleaning.md b/content/blog/docker/cleaning.md
index f36bbd7..dc33257 100644
--- a/content/blog/docker/cleaning.md
+++ b/content/blog/docker/cleaning.md
@@ -1,12 +1,15 @@
---
title: "Cleaning a docker host"
-linkTitle: "Cleaning a docker host"
date: 2018-01-29
-description: >
- How to retrieve storage space by cleaning a docker host
+description: How to retrieve storage space by cleaning a docker host
+tags:
+ - docker
+ - linux
---
-Be carefull that this will delete any stopped container and remove any locally unused image and tags :
+## The command
+
+Be careful that this will delete any stopped container and remove any locally unused images, volumes and tags :
{{< highlight sh >}}
docker system prune -f -a
{{< /highlight >}}
diff --git a/content/blog/docker/docker-compose-bridge.md b/content/blog/docker/docker-compose-bridge.md
index 16a823d..f460c6c 100644
--- a/content/blog/docker/docker-compose-bridge.md
+++ b/content/blog/docker/docker-compose-bridge.md
@@ -1,14 +1,19 @@
---
title: "Docker compose predictable bridge"
-linkTitle: "Docker compose predictable bridge"
date: 2018-09-25
-description: >
- How to use a predefined bridge with docker compose
+description: How to use a predefined bridge with docker compose
+tags:
+ - docker
+ - linux
---
+## The problem
+
By default, docker-compose will create a network with a randomly named bridge. If you are like me using a strict firewall on all your machines, this just cannot work.
-You need to put your services in `network_mode: “bridge”` and add a custom `network` entry like :
+## The fix
+
+For example if your bridge is named docbr1, you need to put your services in `network_mode: “bridge”` and add a custom `network` entry like :
{{< highlight yaml >}}
version: '3.0'
@@ -27,5 +32,5 @@ services:
networks:
default:
external:
- name: bridge
+ name: docbr1
{{< /highlight >}}
diff --git a/content/blog/docker/migrate-data-volume.md b/content/blog/docker/migrate-data-volume.md
index 4f54394..0389a47 100644
--- a/content/blog/docker/migrate-data-volume.md
+++ b/content/blog/docker/migrate-data-volume.md
@@ -1,12 +1,15 @@
---
title: "Migrate a data volume"
-linkTitle: "Migrate a data volume"
date: 2018-01-30
-description: >
- How to migrate a data volume
+description: How to migrate a data volume between two hosts
+tags:
+ - docker
+ - linux
---
-Here is how to migrate a data volume between two of your hosts. A rsync of the proper `/var/lib/docker/volumes` subfolder would work just as well, but is here a fun way to do it with docker and pipes :
+## The command
+
+Here is how to migrate a data volume between two of your hosts. A rsync of the proper `/var/lib/docker/volumes` subfolder would work just as well, but here is a fun way to do it with docker and pipes :
{{< highlight sh >}}
export VOLUME=tiddlywiki
export DEST=10.1.0.242
diff --git a/content/blog/docker/shell-usage-in-dockerfile.md b/content/blog/docker/shell-usage-in-dockerfile.md
index 868fe21..5314b33 100644
--- a/content/blog/docker/shell-usage-in-dockerfile.md
+++ b/content/blog/docker/shell-usage-in-dockerfile.md
@@ -1,12 +1,19 @@
---
title: "Shell usage in dockerfile"
-linkTitle: "Shell usage in dockerfile"
date: 2019-02-04
-description: >
- How to use a proper shell in a dockerfile
+description: How to use a proper shell in a dockerfile
+tags:
+ - docker
+ - linux
---
-The default shell is `[“/bin/sh”, “-c”]`, which doesn't handle pipe fails when chaining commands. To process errors when using pipes use this :
+## The problem
+
+The default shell is `[“/bin/sh”, “-c”]`, which doesn't handle pipe fails when chaining commands.
+
+## The fix
+
+To process errors when using pipes use this :
{{< highlight sh >}}
SHELL ["/bin/bash", "-eux", "-o", "pipefail", "-c"]