Monthly Archives: February 2018

Docker usage cheatsheet

My docker usage cheat sheet is  a simplified version on this fantastic one on GitHub. I followed the structure I used for my apparently popular Slurm user cheatsheet. What it does Command List active dockers docker ps List all dockers … Continue reading

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A docker webserver on CentOS 7

I will base my docker on the katacoda online tutorial. I will suppose you have the docker installed on a CentOS 7 system. We want to run a container that will be visible in our intranet, based on a nginx … Continue reading

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Create, run, destroy a docker no dockerfile on CentOS 7

Following up what I previously wrote here, I will now create an on-the-fly docker (??)  check what is there, and destroy it.  That is to say, without a dockerfile, but using a command. I use the instructions on the official … Continue reading

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“Could not start D-bus. Can you call qdbus” error after KDE update CentOS 7

Scenario: The system needs to be updated. Before that, an AD user can log in no problem with kerberos credentials, the client is online and all the systems are up and running. Then I do yum update, no special tags … Continue reading

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Removing a kernel with yum on CentOS 7

E molto facile e divertente. But I tend to forget the commands. First we list the existing kernels: #> yum list kernel Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: centos.alpha-labs.net * centosplus: artfiles.org * epel: … Continue reading

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Windows 10 enable ping and AD login

It is done similar to Windows 7. Just to save your time, in my case it didn’t work enabling some of the firewall rules:   Click Advanced Settings on the left. From the left pane of the resulting window, click … Continue reading

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Checks (if) in bash

More bash notes. This information is present everywhere, but this one is useful for me. On this post, the “if”, or “if” used for checks. In a raw: ### check that INPUT folder is there if [ ! -d “$INPUT” … Continue reading

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