DevOps Tools

Amazon Web Services

2019-10-10
AWS CLI
2019-10-09
How to use AWS resources for free ?

Ansible

2021-01-26 2021-01-22
Ansible environment variables
2021-01-24 2020-11-24
Ansible Vault / ansible-vault
2021-01-20 2021-01-08
How to subtract a list from a list ?
difference, match, reject, search
2020-12-22
How to send an alert with Ansible ?
2020-12-04 2019-11-20
How to stop ansible-playbook execution (i.e. something like --stop-at-task) ?
fail
2020-11-10 2019-09-26
ansible and ansible-playbook CLI flags
2020-10-22 2020-09-25
ansible.cfg
2020-10-21
How to view Ansible settings values (custom or default) ?
ansible-config, DEFAULT_
2020-09-28
What's the difference between the vars and defaults role directories ?
2020-09-28 2016-10-19
Typical Ansible playbook file tree
2020-06-17 2019-11-20
static vs dynamic, aka import vs include
2020-06-16 2020-05-18
How to specify target hosts ?
2020-05-27
asynchronous and background tasks
2020-05-18 2017-07-26
Run commands on many hosts with the ansible CLI (aka Ad-Hoc Commands)
exclude, pattern
2020-05-13
How to loop on a list of items ?
2020-05-13
Ansible glossary
2020-02-10 2014-10-15
Ansible playbooks
idempotence
2020-01-22 2016-10-20
The inventory file
all children ungrouped
2019-11-28
"New platform" cheatsheet
2019-11-20 2017-01-30
Using tags to slice playbooks
always never tagged untagged all --skip-tags --start-at-task
2019-10-24 2017-07-04
Make Ansible role file tree easily : makeAnsibleRoleSkeleton.sh
2019-09-26 2016-10-28
ansible-playbook
2019-09-26 2014-10-09
Introduction to Ansible
2019-09-13
group_vars
2018-03-07 2016-11-29
ansible-playbook : prompt for passwords with -k and -K
2017-09-11
How to override /etc/ansible/ansible.cfg settings with personal values ?
2017-07-13
How to use with_items ?

Ansible errors

2019-10-21
timedatectl command was found but not usable: Failed to create bus connection: No such file or directory + given timezone "Etc/UTC" is not available
docker
2019-10-18
"msg": "Failed to connect to the host via ssh: ", "unreachable": true
2019-10-18 2019-09-30
UNREACHABLE! => Data could not be sent to remote host \"12.34.56.78\". Make sure this host can be reached over ssh:
2019-09-30
ERROR! 'delegate_to' is not a valid attribute for a TaskInclude
2018-04-18
AnsibleFilterError: The ipaddr filter requires python-netaddr be installed on the ansible controller
2018-04-04
fatal: [server]: FAILED! => {"msg": "Incorrect sudo password"}
2017-07-28 2017-01-06
AnsibleError: Can't LOOKUP(dig): module dns.resolver is not installed

Ansible modules

2020-12-22
fail
2020-06-10
Be very careful with assert
2020-05-27
Links and resources
2019-11-08 2017-07-03
shell and command
2019-11-08 2017-07-03
lineinfile

Docker

2020-12-06 2020-11-18
Dockerfile directives
2020-12-05 2019-09-09
Install Docker CE (Community Edition) on Debian
2020-11-23
docker-compose.yml directives
2020-11-19 2019-09-20
Docker Compose
2020-11-18
How to instantiate an image (aka start a container) ?
2020-11-03 2017-09-01
Docker glossary
2020-08-10 2017-01-19
Docker random notes
2019-10-22 2019-07-26
How to log (i.e. open a shell) into a container ?
root
2019-10-03
Docker and AppArmor
2019-09-19
How to get a container's IP address ?
2019-09-19 2019-09-18
How to simulate a VM with a container ?
2019-07-26
How to start / stop / restart / pause / ... a container ?
2017-09-18
How to backup + restore all Docker data ?

Docker errors

2020-11-17
Error response from daemon: Get https://registry-1.docker.io/v2/: proxyconnect tcp: dial tcp 127.0.0.1:8080: connect: connection refused
2018-01-24
Command "daemon" is deprecated, and will be removed in Docker 17.12. Please run `dockerd` directly
2018-01-24
Error starting daemon: error initializing graphdriver: driver not supported

Index of Docker commands

GitLab

2019-04-23
Data is missing in the API results
2019-04-23 2019-04-11
How to purge the pipelines history ?
2019-04-11
GitLab glossary
2019-04-11 2019-04-03
How to setup Continuous Integration (CI) with GitLab ?

Molecule

2019-09-18
How to re-use Ansible role variables in Molecule unit tests ?
2019-09-16
molecule/myScenario/molecule.yml advanced configuration
2019-09-13 2019-09-10
molecule/myScenario/yamllint.yml advanced configuration
2019-09-13 2019-07-31
Molecule actions
2019-09-12 2019-07-31
Molecule
2019-07-31
Ansible Lint error : [403] Package installs should not use latest

PuTTY

2019-12-17
Convert SSH public keys between PuTTY and OpenSSH formats
.ppk, .pub
2016-04-25
How to run a graphical application remotely via PuTTY and Xming ?
2015-03-04
How to disable the auto scroll down feature of the PuTTY window while trying to read past commands ?
2014-11-27
PuTTY error : Proxy error 412 : precondition failed
2014-10-20
How to use function keys during a PuTTY session ?
2014-09-29 2014-07-23
How to dump and restore settings : FileZilla, PuTTY, WinSCP ?
backup, export, import
2014-07-02
How to recover from CTRL-s in PuTTY ?
2014-05-26 2013-08-16
Convert SSH private keys between PuTTY and OpenSSH formats
.ppk, .pub