First big articles reformatting now that I properly understand hugo

content/blog/ansible/_index.md

@@ -1,5 +0,0 @@
----
-title: "Ansible"
-linkTitle: "Ansible"
-weight: 30
----

content/blog/ansible/ansible-vault-example.md

@@ -1,17 +1,31 @@
 ---
 title: "Ansible vault example"
-linkTitle: "Ansible vault example"
 date: 2018-02-21
-description: >
+description: Getting started with ansible vault
-  Ansible vault example
+tags:
+  - ansible
 ---
 
+## Editing a protected file
+
 Here is how to edit a vault protected file :
 {{< highlight sh >}}
 ansible-vault edit hostvars/blah.yml
 {{< / highlight >}}
 
-Here is how to put a multiline entry like a private key in vault (for a simple value, just don't use a `|`):
+## Using a vault entry in a task or a jinja template
+
+It is as simple as using any variable :
+{{< highlight yaml >}}
+- copy:
+    path: /etc/ssl/private.key
+    mode: 0400
+    content: '{{ ssl_key }}'
+{{< / highlight >}}
+
+## How to specify multiple lines entries
+
+This is actually a yaml question, not a vault one but since I ask myself this frequently in this context here is how to put a multiple lines entry like a private key in vault (for a simple value, just don't use a `|`):
 
 {{< highlight yaml >}}
 ssl_key : |
@@ -21,13 +35,7 @@ ssl_key : |
   ----- END PRIVATE KEY -----
 {{< /highlight >}}
 
-And here is how to use it in a task :
+## How to run playbooks when vault values are needed
-{{< highlight yaml >}}
-- copy:
-    path: /etc/ssl/private.key
-    mode: 0400
-    content: '{{ ssl_key }}'
-{{< / highlight >}}
 
 To run a playbook, you will need to pass the `--ask-vault` argument or to export a `ANSIBLE_VAULT_PASSWORD_FILE=/home/julien/.vault_pass.txt` variable (the file needs to contain a single line with your vault password here).
 

content/blog/ansible/custom-fact.md

@@ -1,17 +1,19 @@
 ---
 title: "Ansible custom facts"
-linkTitle: "Ansible custom facts"
 date: 2018-09-25
-description: >
+description: How to write custom facts with ansible
-  How to write custom facte with ansible
+tags:
+  - ansible
 ---
 
+## Introduction
+
 Custom facts are actually quite easy to implement despite the lack of documentation about it.
 
-## How they work
+## How custom facts work
 
 On any Ansible controlled host — that is, the remote machine that is being controlled and not the machine on which the playbook is run — you just need to create a directory at
-`/etc/ansible/facts.d`. Inside this directory, you can place one or more `*.fact` files. These are files that return JSON data, which will then be included in the raft of facts that
+`/etc/ansible/facts.d`. Inside this directory, you can place one or more `*.fact` files. These are files that must return JSON data, which will then be included in the raft of facts that
 Ansible gathers.
 
 The facts will be available to ansible at `hostvars.host.ansible_local.<fact_name>`.
@@ -31,7 +33,7 @@ This will give you the fact `hostvars.host.ansible_local.mysql.password` for thi
 ## A more complex example
 
 A more interesting example is something I use with small webapps. In the container that hosts the frontent I use a small ansible role to generate a mysql password on its first run, and
-provision a database with a user that has access to it on a mysql server. This fact ensures that on subsequent runs we will stay idempotents. Here is how it works.
+provision a database with a user that has access to it on a mysql server. This fact ensures that on subsequent runs we will stay idempotent.
 
 First the fact from before, only slightly modified :
 {{< highlight sh >}}

content/blog/ansible/dump-all-vars.md

@@ -1,11 +1,13 @@
 ---
 title: "Dump all ansible variables"
-linkTitle: "Dump all ansible variables"
 date: 2019-10-15
-description: >
+description: How to dump all variables used by ansible in a task
-  How to dump all variables used by ansible
+tags:
+  - ansible
 ---
 
+## Task to use
+
 Here is the task to use in order to achieve that :
 
 {{< highlight yaml >}}
@@ -13,6 +15,8 @@ Here is the task to use in order to achieve that :
   action: template src=dumpall.j2 dest=ansible.all
 {{< /highlight >}}
 
+## Associated template
+
 And here is the template to use with it :
 
 {{< highlight jinja >}}
@@ -36,3 +40,7 @@ HOST Variables ("hostvars"):
 --------------------------------
 {{ hostvars | to_nice_json }}
 {{< /highlight >}}
+
+## Output
+
+If you are running a local task, the output will be in your playbook directory. Otherwise, it will be on the target machine(s) in a `.ansible/tmp/ansible.all` file under the user your are connecting the machine(s)' with.

content/blog/cfengine/_index.md

@@ -1,5 +0,0 @@
----
-title: "Cfengine"
-linkTitle: "Cfengine"
-weight: 40
----

content/blog/cfengine/leveraging-yaml.md

@@ -1,11 +1,13 @@
 ---
 title: "Leveraging yaml with cfengine"
-linkTitle: "Leveraging yaml with cfengine"
 date: 2018-09-25
-description: >
+description: How to leverage yaml inventory files with cfengine
-  How to leverage yaml inventory files with cfengine
+tags:
+  - cfengine
 ---
 
+## Introduction
+
 CFEngine has core support for JSON and YAML. You can use this support to read, access, and merge JSON and YAML files and use these to keep policy files internal and simple. You
 access the data using the usual cfengine standard primitives.
 

content/blog/commands/_index.md

@@ -1,5 +0,0 @@
----
-title: "Commands"
-linkTitle: "Commands"
-weight: 40
----

content/blog/commands/asterisk-call-you.md

@@ -1,11 +1,13 @@
 ---
 title: "List active calls on asterisk"
-linkTitle: "List active calls on asterisk"
 date: 2018-09-25
-description: >
+description: How to show active calls on an asterisk system
-  How to show active calls on an asterisk system
+tags:
+  - asterisk
 ---
 
+## Using the cli
+
 {{< highlight yaml >}}
 watch -d -n1 'asterisk -rx “core show channels”'
 {{< /highlight >}}

content/blog/commands/asterisk-list-active-calls.md

@@ -1,11 +1,13 @@
 ---
 title: "How to have asterisk call you into a meeting"
-linkTitle: "How to have asterisk call you into a meeting"
 date: 2018-09-25
-description: >
+description: How to have asterisk call you itself into a meeting
-  How to have asterisk call you itself into a meeting
+tags:
+  - asterisk
 ---
 
+## Using the cli
+
 At alterway we sometimes have DTMF problems that prevent my mobile from joining a conference room. Here is something I use to have asterisk call me
 and place me inside the room :
 

content/blog/commands/busybox-web-server.md

@@ -1,12 +1,15 @@
 ---
 title: "Busybox web server"
-linkTitle: "Busybox web server"
 date: 2019-04-16
-description: >
+description: How to serve static files from only busybox
-  Busybox web server
+tags:
+  - linux
+  - simple utilities
 ---
 
-If you have been using things like `python -m SimpleHTTPServer`, here is something even more simple and lightweight to use :
+## The command
+
+If you have been using things like `python -m SimpleHTTPServer` to serve static files in a pinch, here is something even more simple and lightweight to use :
 
 {{< highlight sh >}}
 busybox httpd -vfp 80

content/blog/commands/capture-desktop-video.md

@@ -1,12 +1,14 @@
 ---
 title: "Capture a video of your desktop"
-linkTitle: "Capture a video of your desktop"
 date: 2011-11-20
-description: >
+description: Capture a video of your desktop
-  Capture a video of your desktop
+tags:
+  - ffmpeg
 ---
 
-You can capture a video of your linux desktop with ffmpeg :
+## The command
+
+You can capture a video of your linux desktop very easily with ffmpeg :
 
 {{< highlight sh >}}
 ffmpeg -f x11grab -s xga -r 25 -i :0.0 -sameq /tmp/out.mpg

content/blog/commands/clean-conntrack-states.md

@@ -1,12 +1,14 @@
 ---
 title: "Clean conntrack states"
-linkTitle: "Clean conntrack states"
 date: 2018-03-02
-description: >
+description: How to clean conntrack states
-  Clean conntrack states
+tags:
+  - linux
 ---
 
-Here is an example of how to clean conntrack states that match a specific query on a linux firewall :
+## A not so simple command
+
+Firewalling on linux is messy, here is an example of how to clean conntrack states that match a specific query on a linux firewall :
 
 {{< highlight sh >}}
 conntrack -L conntrack -p tcp –orig-dport 65372 | \

content/blog/commands/date.md

@@ -1,12 +1,14 @@
 ---
 title: "Convert unix timestamp to readable date"
-linkTitle: "Convert unix timestamp to readable date"
 date: 2011-01-06
-description: >
+description: the -d flag of the date command combined with @timestamp
-  Convert unix timestamp to readable date
+tags:
+  - simple utilities
 ---
 
-As I somehow have a hard time remembering this simple date flags as I rarely need it, I decided to write it down here :
+## The trick
+
+I somehow have a hard time remembering this simple date flags *(probably because I rarely get to practice it), I decided to write it down here :
 
 {{< highlight sh >}}
 $ date -d @1294319676

content/blog/commands/dmidecode.md

@@ -1,12 +1,14 @@
 ---
 title: "DMIdecode"
-linkTitle: "DMIdecode"
 date: 2011-02-16
-description: >
+description: Some DMIdecode common flags
-  DMIdecode
+tags:
+  - simple utilities
 ---
 
-DMIdecode to obtain Hardware informations.
+## Introduction
+
+DMIdecode is a tool to obtain Hardware informations.
 
 ## Mose useful commands
 

content/blog/commands/find-hardlinks.md

@@ -1,12 +1,12 @@
 ---
 title: "Find hardlinks to a same file"
-linkTitle: "Find hardlinks to a same file"
 date: 2018-03-02
-description: >
+description: How to list hardlinks that link to the same file
-  Find hardlinks to a same file
+tags:
+  - find
+  - simple utilities
 ---
 
 {{< highlight sh >}}
 find . -samefile /path/to/file
 {{< /highlight >}}
-

content/blog/commands/find-inodes-used.md

@@ -1,12 +1,12 @@
 ---
 title: "Find where inodes are used"
-linkTitle: "Find where inodes are used"
 date: 2018-04-25
-description: >
+description: How to locate what is taking all the inodes in the subdirectory of a given device
-  Find where inodes are used
+tags:
+  - find
+  - simple utilities
 ---
 
 {{< highlight sh >}}
 find . -xdev -printf '%h\n' | sort | uniq -c | sort -k 1 -n
 {{< /highlight >}}
-

content/blog/commands/git-import-commits.md

@@ -1,13 +1,14 @@
 ---
 title: "Import commits from one git repo to another"
-linkTitle: "Import commits from one git repo to another"
 date: 2018-09-25
-description: >
+description: How to take commits from one git repo and bring them into another
-  Import commits from one git repo to another
+tags:
+  - git
 ---
 
-This imports commits from a repo in the `../masterfiles` folder and applies them to the repository inside the current folder :
+## The trick
+
+In an ideal world there should never be a need to do this, but here is how to do it properly if you ever walk into this bizarre problem. This command imports commits from a repo in the `../masterfiles` folder and applies them to the repository inside the current folder :
 {{< highlight sh >}}
 (cd ../masterfiles/; git format-patch –stdout origin/master) | git am
 {{< /highlight >}}
-

content/blog/commands/git-rewrite-commit-history.md

@@ -1,13 +1,14 @@
 ---
 title: "Rewrite a git commit history"
-linkTitle: "Rewrite a git commit history"
 date: 2018-03-05
-description: >
+description: How to rewrite a git commit history
-  Rewrite a git commit history
+tags:
+  - git
 ---
 
+## git filter-branch
+
 Here is how to rewrite a git commit history, for example to remove a file :
 {{< highlight sh >}}
 git filter-branch –index-filter "git rm --cached --ignore-unmatch ${file}" --prune-empty --tag-name-filter cat - -all
 {{< /highlight >}}
-

content/blog/commands/ipmi.md

@@ -1,11 +1,12 @@
 ---
 title: "ipmitool"
-linkTitle: "ipmitool"
 date: 2018-03-05
-description: >
+description: some ipmitool command examples
-  ipmitool
+tags:
+  - simple utilities
 ---
 
+## Usage examples
 - launch ipmi shell : `ipmitool -H XX.XX.XX.XX -C3 -I lanplus -U <ipmi_user> shell`
 - launch ipmi remote text console : `ipmitool -H XX.XX.XX.XX -C3 -I lanplus -U <ipmi_user> sol activate`
 - Show local ipmi lan configuration : `ipmitool lan print`
@@ -16,4 +17,3 @@ ipmitool lan set 1 ipaddr 10.31.149.39
 ipmitool lan set 1 netmask 255.255.255.0
 mc reset cold
 {{< /highlight >}}
-

content/blog/commands/mdadm.md

@@ -1,9 +1,10 @@
 ---
 title: "mdadm"
-linkTitle: "mdadm"
 date: 2011-11-15
-description: >
+description: some mdadm command examples
-  mdadm
+tags:
+  - linux
+  - simple utilities
 ---
 
 ## Watch the array status
@@ -39,4 +40,3 @@ mdadm --stop /dev/md0
 mdadm --zero-superblock /dev/sda
 mdadm --zero-superblock /dev/sdb
 {{< /highlight >}}
-

content/blog/commands/megacli.md

@@ -1,11 +1,11 @@
 ---
 title: "MegaCLI"
-linkTitle: "MegaCLI"
 date: 2018-03-05
-description: >
+description: MegaCLI for dell hardware investigations
-  MegaCLI for dell hardware investigations
+tags:
+  - linux
 ---
 
+## Some command examples
 - `megacli -LDInfo -LALL -aALL|grep state`
 - `MegaCli -PDlist -a0|less`
-

content/blog/commands/omreport.md

@@ -1,9 +1,9 @@
 ---
 title: "omreport"
-linkTitle: "omreport"
 date: 2018-03-05
-description: >
+description: Some omreport command examples
-  omreport
+tags:
+  - linux
 ---
 
 ## Your raid status at a glance
@@ -17,4 +17,3 @@ omreport storage vdisk
 omreport storage pdisk controller=0 vdisk=0
 omreport storage pdisk controller=0 pdisk=0:0:4
 {{< /highlight >}}
-

content/blog/commands/qemu-nbd.md

@@ -1,11 +1,14 @@
 ---
 title: "qemu-nbd"
-linkTitle: "qemu-nbd"
 date: 2019-07-01
-description: >
+description: qemu-nbd usage example
-  qemu-nbd
+tags:
+  - linux
+  - virtualization
 ---
 
+## Usage example
+
 {{< highlight sh >}}
 modprobe nbd max_part=8
 qemu-nbd -c /dev/nbd0 image.img
@@ -14,4 +17,3 @@ mount /dev/nbd0p1 /mnt   # or vgscan && vgchange -ay
 umount /mnt
 qemu-nbd -d /dev/nbd0
 {{< /highlight >}}
-

content/blog/commands/qemu.md

@@ -1,9 +1,10 @@
 ---
 title: "Qemu"
-linkTitle: "Qemu"
 date: 2019-06-10
-description: >
+description: Some simple qemu command usage
-  Qemu
+tags:
+  - linux
+  - virtualization
 ---
 
 ## Quickly launch a qemu vm with local qcow as hard drive

content/blog/commands/rrdtool.md

@@ -1,9 +1,9 @@
 ---
 title: "rrdtool"
-linkTitle: "rrdtool"
 date: 2018-09-25
-description: >
+description: How to graph manually with rrdtool
-  rrdtool
+tags:
+  - simple utilities
 ---
 
 ## Graph manually

content/blog/debian/_index.md

@@ -1,5 +0,0 @@
----
-title: "Debian"
-linkTitle: "Debian"
-weight: 40
----

content/blog/debian/error-during-signature-verification.md

@@ -1,11 +1,14 @@
 ---
 title: "Error occured during the signature verification"
-linkTitle: "Error occured during the signature verification"
 date: 2015-02-27
-description: >
+description: Fixing the "Error occured during the signature verification"
-  Error occured during the signature verification
+tags:
+  - debian
+  - linux
 ---
 
+## How to fix
+
 Here is how to fix the apt-get “Error occured during the signature verification” :
 {{< highlight sh >}}
 cd /var/lib/apt

content/blog/debian/force-package-removal.md

@@ -1,11 +1,14 @@
 ---
 title: "Force package removal"
-linkTitle: "Force package removal"
 date: 2015-01-27
-description: >
+description: How to force the removal of a package
-  Force package removal
+tags:
+  - debian
+  - linux
 ---
 
+## How to force the removal of a package
+
 Here is how to force package removal when post-uninstall script fails :
 {{< highlight sh >}}
 dpkg --purge --force-all <package>

content/blog/debian/no-public-key-error.md

@@ -1,11 +1,14 @@
 ---
 title: "Fix the no public key available error"
-linkTitle: "Fix the no public key available error"
 date: 2016-01-27
-description: >
+description: How to fix this common debian error when using non official repositories
-  Fix the no public key available error
+tags:
+  - debian
+  - linux
 ---
 
+## How to fix
+
 Here is how to fix the no public key available error :
 {{< highlight sh >}}
 apt-key adv --keyserver keyserver.ubuntu.com --recv-keys KEYID

content/blog/docker/_index.md

@@ -1,5 +0,0 @@
----
-title: "Docker"
-linkTitle: "Docker"
-weight: 40
----

content/blog/docker/cleaning.md

@@ -1,12 +1,15 @@
 ---
 title: "Cleaning a docker host"
-linkTitle: "Cleaning a docker host"
 date: 2018-01-29
-description: >
+description: How to retrieve storage space by cleaning a docker host
-  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 >}}

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: >
+description: How to use a predefined bridge with docker compose
-  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 >}}

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: >
+description: How to migrate a data volume between two hosts
-  How to migrate a data volume
+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

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: >
+description: How to use a proper shell in a dockerfile
-  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"]

content/blog/freebsd/_index.md

@@ -1,5 +0,0 @@
----
-title: "FreeBSD"
-linkTitle: "FreeBSD"
-weight: 40
----

content/blog/gentoo/_index.md

@@ -1,5 +0,0 @@
----
-title: "Gentoo"
-linkTitle: "Gentoo"
-weight: 40
----

content/blog/kubernetes/_index.md

@@ -1,5 +0,0 @@
----
-title: "Kubernetes"
-linkTitle: "Kubernetes"
-weight: 40
----

content/blog/miscellaneous/_index.md

@@ -1,5 +0,0 @@
----
-title: "Miscellaneous"
-linkTitle: "Miscellaneous"
-weight: 40
----

content/blog/netapp/_index.md

@@ -1,5 +0,0 @@
----
-title: "Netapp"
-linkTitle: "Netapp"
-weight: 30
----

content/blog/travels/_index.md

@@ -1,5 +0,0 @@
----
-title: "Travels"
-linkTitle: "Travels"
-weight: 20
----