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Roy

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Prevent harmful Linux updates with versionlock

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Answer: Run only one task and handler from ansible playbook

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Ctrl-v I # cannot comment out multiple lines

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failed to switch container runtime to containerd

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apt cacher for faster downloading rpm/deb pkgs

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a wrong indent in yaml make comment invalid

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nodename and hostname in ansible

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small error related to quote and indent in ansible playbook loop

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yum --disableexclude

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ssh can not resolve hostname in included config file

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fix problems after rename vagrant project

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open search result in new tab

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vagrant cannot create a custom named network for virtualbox

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docker: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers).

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Ansible: Further plays are not executing if task in one play failed when multiple plays in a playbook

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vagrant will not run an ansible play if the vm do not match the hosts line in the play

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specify image-repository fo kubeadm

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Client.Timeout exceeded while awaiting headers in docker pull

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variable defined in environment not show in ansible_env

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mistakenly set the wrong environment variable

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ansible create skipped

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Answer: set expandtab in .vimrc not taking effect

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A YAML Primer

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yaml quote escape

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ansible local facts

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ansible Lazy Evaluation

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jinja2 filter: trim

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ansible registered variable

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using python method in ansible Jinja2 context

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ansible relative path search order

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ansible include directive

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you should only put variable part in curly braces

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ansible role name should not contain hyphen

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show http proxy used by ansible

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killing a process group

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Answer: Ansible with_subelements

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create a role directroy structure in one line

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cannot put comments on the same line with instruction in ansible.cfg

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ansible gathering fact at every play

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idea complains ".class expected" when I use double.parseDouble

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Answer: IntelliJ cannot find any declarations

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Answer: How do I compare strings in Java?

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camel case

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