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So for this lab, let's go to Ubuntu,

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because the CentOS machine was already correctly installed.

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First, I need to check my journal d.conf.

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And there you can see that on Ubuntu,

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it lives in ETC system D. And the option I'm looking for

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is right here.

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Storage is auto.

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That's all we need.

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So I'm going to create a directory, var log journal.

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Oh, file already exists.

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Now, that's convenient.

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I'm using ls minus l on var log journal.

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And as you can see, we already have the consistent journal

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on this Ubuntu machine.

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Now, why do they do that?

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Because on Red Hat, the journal's consistency

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is guaranteed through rsyslog.

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So we should check if we have rsyslog on Ubuntu.

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And yeah, we also have rsyslog.

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So that is kind of double, but it's a gender choice.

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And that is how distributions can make their own choices

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to do specific stuff.

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Next, we need to do what?

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We need to use logger to write a message with the priority

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info in the text, hello world.

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So logger minus p, info, hello world.

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And journal CTL, uppercase G for the end.

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And oh, there we can see that I made a typo.

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Well, it made it to the journal, but not the right way.

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Minus p is not the same as equals p.

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So now it should be better.

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And let's be a little bit more precise

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while looking it up.

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So journal CTL minus p, info, is showing all messages

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with a state of info.

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And there you can see it's a lot of messages,

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including the message that I've just written to the logs.