Nebula Graph NebulaGraph for Beginners, 2 Aug 2021

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From YouTube: Nebula for Beginners - Config Explained (CN Version & EN Subtitle)

Description

In this video, Siwei introduces detailed information about configuration in Nebula Graph. Watching this video helps you to have a better understanding of configuration works. More info, welcome to join our Slack: nebulagraph.slack.com
Tips: if you want to see English subtitle, please switch the subtitles to English in the settings.

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Hi ~, hello, everyone- I am a monday hera. Would we go again,? This is thought to.

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Hi ~ hello,, everyone met again,.

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This is it,, please think of us as very important information about what the configuration at the time of the operation nebula.

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First, we were able to get these options, can be configured from the list and explain in detail where it has two options.

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First, we can get graphd, metad and storaged. All options are configurable and below some detailed explanation from the document inside.

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That, in addition to the documents, we can also add external it directly from the corresponding binary executable file, --help.

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And an explanation of all these configurable items, we can configure them how to do.

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This, in fact, sometimes for many students, it has on some confuse many of the options that it has in fact, mainly it.

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Is a configuration file, three options that we know each process can select a configuration file inside to list items, so we want to configure.

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And then what is the startup parameters such as storaged? You can use the back foo = bar then it in fact set up such a key value. Foo = bar configuration.

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That its contents actually set inside with your config file, is the same.

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That there is one, do we have noticed some students after the fact,, you can.

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Go to its configuration settings and show it by ngql by command. I will show them a little bit of detail.

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They have a lot of nuances that first priority.

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When we ignore what we can to set the command ngql, when ngql configuration can be set to do its priority is the highest.

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Followed by command parameter is, when you run this binary, corresponding server of the parameters command line of the back with.

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It the priority it is followed. Its priority is higher than the priority of the documents in the configuration of.

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Which is the priority of a sort that followed their range is in fact, everyone should know that we have to update config command, show config, and it does not update all configuration item.

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That only a subset of a part of the configuration item can be configured.

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To open, if we go through command set, this configuration item configuration item that this is actually the state is maintained in the cluster metad, which.

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It is still part of configuration is not configured that the other part of it. We must follow the centralized management of priority.

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Then is to read: if not, they would read the default values. That last point to emphasize is that the conditions.

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From the parameter configuration file command.

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From going in fact, choose whether to open.

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Or through a centralized, configuration is to configure metad by command, is configurable via local configuration.

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That, when the local config = false, when it is not passed, local, that this is the case.

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That subset, where all able to manage the presence of meta inside those configurations, it will ignore inside the configuration profiles or conmmand argument, (start parameters).

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Or if it is local, config, = true,, then by conmmand us via command, can not control the configuration.

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Of all configurations are present locally or the process command argument (start parameter) inside. So this is the relationship between a condition of.

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Good xiexie si to explain that if you use docker then configure, how is it.

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That this is a very good question if we use the docker to run nebula graph instead of binary or directly compiled to run,, then.

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It finally actually take effect,, or do we talk about before that several profiles,, but we do practice it a bit difference.

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Docker the circumstances do we know docker compose or docker swarm. It will package it to yaml file.

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That, actually, this is by command yaml file inside this screenshot. We see an example of this case.

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That, in fact, we have to fill in a file yaml that it is at the bottom actually modify the restart.

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Modify the process corresponding server's command-line arguments.

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So we should pay attention to in fact change the compose this yaml itself, if we want to modify dcoker compose, can be.

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That we know it is actually under lying. It is run cmd argument which.

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Is good? Thank you that there is use. K8S, then, is how to configure it.

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That, if it is deployed with kubernetes way, we use such a crd ourselves, nebulacluster.

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If we use the nebula operator,, then under that case we it's crd inside it has a good package configuration.

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Is the same as my picture, yaml spack in this document and the corresponding graph example, that in graphd following config.

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That inside all of its parameters, will become key-value, remove the front go inside there.

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And then we update the crd of yaml, it would be appropriate. (Nebula) operator will help us appropriate to modify the underlying config file.

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That this is a bit different with docker docker. Direct change is command- argument: (start command) that there is a change in the config.

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File,, but they are similar to the tubes. We only need to file a yaml can do so over.

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The cluster configuration is docker and kubernete s configuration file that we have introduced.

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Finally, I would like to mention a mouth that we've done some of the (video) that before we do, this hand-drawn map.

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Can be siwei.io on the website or in-country visit cn .siwei.io can get to all of the hand-drawn picture of the.

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Good that I have one last question that you are more recommended: loco, config mode commands and which one do.

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This is a very good question. Actually, our hera, the document had already been referred to. The recommended approach is to use all local-config files to manage all or argument in which to manage the.

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Command line without using the meta way to manage this is more difficult to some miss-match.

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As well, xiexie si the full harvest it today to explain.

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That the current video is over something interesting to remember, tell us thank you. Bye, bye, bye, ~, ~.