This plugin introduces server monitoring for your NodeBB forum via Prometheus. Prometheus is a leading open-source monitoring solution that I personally use for all my servers. I wanted to have some of the information in NodeBB in my Prometheus monitoring environment. Thus being able to compare user activity with server load, memory usage, NodeJS event loop lag, 503 errors, etc. This plugin makes this possible.

You then can create nice looking graphs to get a nice overview of the data for example with Grafana. Here an example on how this might look. This is my server for the last 48 hours.

As you can see in the lower left corner, I also have some data about captchas. This is done via two hooks provided by this plugin and thus makes it possible for other plugins to provide monitoring metrics.

You can find the plugin in your plugin overview in the ACP. It is obviously also available on npmjs.com:
https://www.npmjs.com/package/nodebb-plugin-prometheus

There you can also find all the metrics that are currently collected. If you have any issues or questions please leave a post in this topic or open an issue on the official repository over at GitLab:
https://gitlab.com/cppnet/nodebb/nodebb-plugin-prometheus

An example dashboard for Grafana can be found here: https://grafana.com/dashboards/6578

After having been called forum of the week on the 23rd May, I might announce it here now as well.

C++ Community

Deutsprachige C++ Community - Irgendwer hat immer eine Antwort

C++ Community (www.c-plusplus.net)

We are quite an old German speaking C++ community on the internet. It goes back to the 1997/98. The previous forum was opened in 2001 and was a phpBB2. We expanded and maintained that phpBB2 ourselves for 17 years until I finally had enough of the horrible code and design of 2001. I wrote my own plugin and migrated with a modified NodeBB. We took over post IDs and topic IDs, converted all BBCode (including our custom extensions) over to Markdown and thus took all the data with us. This means about 2.25 millions posts distributed over about 280,000 topics with nearly 35,000 users. The migrations plugin took 15-16 hours to convert all this data.

So far quite happy with the new forum. It opens up a lot of new possibilities for us. Also helps with search indexes since it is now mobile friendly. Also it is now mobile friendly . I think the majority of the community is also happy with the modernization and new users to the site will probably be more familiar with such a modern design and with Markdown.

We are still missing some stuff from the previous forum and have some open wishes for additional features or improvements. But I will work on this stuff and hopefully share it via core contributions or plugins with the community of NodeBB.

Two main reasons this happened for me:

• url in your config is not configured properly. Thus you try to access your website over another URL than the one configured. If you've installed in a subfolder, make sure to access it at the subfolder location and add the subfolder to the url in the config.
• Your reverse proxy is not configured properly for web sockets. Follow the appropriate documentation.

Just remove the rights to create topics in there from all users. You can still allow to create topics in the sub categories.

Definitely were the cookies. Digged in the code and found the problem in src/middleware/index.js. Created a pull request that fixes this problem:
https://github.com/NodeBB/NodeBB/pull/4663

I know there is the nodebb-plugin-superusers but it is heavily outdated and I didn't like the name of it. I only want to give my moderators the possibility to ban users that doesn't make them some type of super users

You can find the plugin here: https://www.npmjs.com/package/nodebb-plugin-ban-privileges

If you have issues feel free to report them at the repository or in this topic.

For the future I might want to also give a group the possibility to ban IP addresses. But I probably first will make a feature request to NodeBB to have temporary IP bans with comments. Basically similar to user bans.

You'll have to ask the author of the plugin. Best is you open an issue on the GitHub repository and hope you'll get an answer: https://github.com/NicolasSiver/nodebb-plugin-ns-spoiler/issues

@baris @Ben-Lubar @julian Found the problem. The solution Ben describes works, but it is painfully slow. And also made no sense. So I continued searching and found it.

It is not a problem in NodeBB. It seems to be a problem in the mongodb package. Downgrading it to version 3.0.4 and then only executing ./nodebb upgrade -s so that the mongodb package isn't upgraded back to 3.0.8 makes the migration work. And it makes it work really fast. It took like 5 minutes.

Found it via this issue in mongoose: https://github.com/Automattic/mongoose/issues/6504
And the issue going along in JIRA: https://jira.mongodb.org/browse/NODE-1482

If someone has an account in this JIRA tracker, we perhaps should report there, that we are able to reproduce that bug.

@Per0x You could have just deactivated the plugin and everything would have worked perfectly again. You can do this from the command line via ./nodebb reset -p nodebb-plugin-prometheus. See also the NodeBB documentation.

Error is only related to forums with a Redis DB, since they store all values as text. Thanks for the log it is very useful to get that information. I'll go over the code to fix those issue and probably will release a new version in the next days.

I don't but I can't evade all the cheering around me. But will be out soonish anyway and it will die down from then. Its a wonder they made it through the group phase. Just don't tell anyone of my fellow citizens they might burn me alive.

Left Y axis is page views (gray), right Y axis is unique visitors (blue). A page view is just what it say, a visitor looking at a page. A unique visitor is identified by IP. Thus it is a unique IP visiting your site. They are summarized over a day in the graph. Thus every value is per day.

The total you see below is the sum of all page views over the last seven days.

I just release version 0.3.0 of this plugin. The following changes have been implemented:

• Using action:analytics.increment for analytics counter (better performance and accuracy)
• Added label viewer to page view that can have the values user, guest, or bot (inspired by an upcoming change in 1.11, you get it early here)
• Added new metric nodebb_online_guests
• Added new metric nodebb_eventloop_lag_seconds. This is measured by NodeBB which has a smoothing factored compared to what is measured by NodeJS and provided via nodejs_eventloop_lag_seconds
• Added new metric nodebb_eventloop_maxlag_seconds. This is the maximum allowed lag for NodeBB. If the lag is getting closer to this value NodeBB will start to issue 503 error codes. The chance a user is getting a 503 is calculate by this formula: (lag - maxLage) / maxLag.

@Per0x Sorry it took a while but your metric for online guests is now finally available.

Well Ubuntu Server 16.04 is still supported until 2021. NodeJS 8 is an LTS version that is supported until the end of 2019. They might be a bit older, but are well tested and probably more stable than Ubuntu 18.04 and NodeJS 10. Thus it is perfectly up-to-date. But you can do the exact same steps with never versions of Ubuntu and NodeJS.

There is a widget to display the list of moderators for a category.

To display a mod badge for the moderators in their category I just recently created my own plugin. Be warned that it is in really early alpha and currently mainly focused on my own forum: https://www.npmjs.com/package/nodebb-plugin-user-badges

I doubt that this worked with 1.5.x. But it might have worked with 1.4.x. There was a breaking change between those minor versions on the client side. The function unloadImages moved from the module forum/topic/posts to forum/topic/images. This plugin basically is now incompatible with the current NodeBB and needs fixing.

Well now I feel dumb. Couldn't I have waited another hour after waiting three months?

But that is great news, just doing some testing and now I can test with 1.10.2 and hopefully do the update soon. Thank you!

I would love to move it. But I'm not sure if it is possible.

Disabling it for global moderator should be possible. I'll have a look at it. There is still several things I'd want to do with this plugin. The name is actually really the target. I just really wanted the mod badges in for the maintenance window I had to upgrade to 1.10.2

Thank you. Will have a look at it. Probably will use that plugin for some other stuff anyway so it is a great additional use for it

I think I'll mark this topic as answered.

As far as I'm aware it breaks it. Because if you provide authentication options nodemailer will try to authenticate and if there is simply no available authentication the server will reject that and it will result in an error.

The plugin checks if username or password is empty. If either one is empty no authentication option is passed to the nodemailer and thus no authentication takes place.

Since I need this, I would be happy to provide a pull-request for this in the main code. I think what the plugin is doing could be very easily ported to the fallbackTransport in the core.

I think he means if there is a way to limit for which notification users can receive e-mails. Thus to reduce the amount of e-mails NodeBB sents out.