Author: Surendra Anne

There are some situation where you want to copy files to and from a docker container so that we will have data accessabile in host system or within the container. This can be achieved through multiple ways as listed below. Through docker cp command Through docker volumes We will learn these two methods with some examples and explanations. How to use docker cp command Syntax: Usage: docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH docker cp [OPTIONS] SRC_PATH CONTAINER:DEST_PATH So ‘docker cp’ command is similar to scp command. Example: For copying a file(in this case a chef-server deb file) from the container we can use below command First list available docker containers in your host: docker ps Note: We can not retrieve files from a dead/exited docker container, your docker container need to be in running state. Example output of “docker ps” SurendraAnneMacBook-Pro:docker-chef-server surendraanne$ docker ps CONTAINER ID        IMAGE                                   COMMAND                  CREATED             STATUS              PORTS                          NAMES 08a50f4ba59d        docker_chef-server                      "/bin/bash"              4 seconds ago  ...

Lately I am working on automating my website creation so that if I want to change my hosting provider. The other thought is to host my site locally on my kubernetes cluster which I am planing to implement in my home. I created an Ansible playbook to automate my WordPress website installation as this a small project with out complexity. This is a kind of backup strategy for the site so I will have latest backup of linuxnix.com site. After almost 3 years later I started using Ansible for this project. I felt Chef and puppet is not that suitable for this. I written couple of roles for WordPress software installation MySQL software installation Nginx software installation etc. When I executed my playbook containing these roles I come across below weird error. root@linuxnix:~# ansible-playbook -i wordpress-setup/hosts wordpress-setup/wordpress-setup.yml Error: ERROR! unexpected parameter type in action: <type 'bool'> The error appears to be in '/root/wordpress-setup/roles/mysql/tasks/main.yml': line 2, column 3, but may be elsewhere in the file depending on the exact syntax problem. The offending line appears to be: --- - name: Install MySQL software ^ here Initially I thought it was a linting issue(A kind of file format issue) within in my mysql tasks as it show error above. But after carefully observing I come to know the actual error was with unexpected parameter not with any linting issue from the...