LifeGauge is a mod that displays the current health of a mob. If the mod isn’t installed on the server, potion effects will not be visible. It’s not required to be installed on the server, though. A server can also disable the mod for all the users connecting.
You can see the current hearts on the name tag and the total hearts on the black bar.
A name tag is always preferred over the normal entity name.
How to install:
- Download and install Minecraft Forge.
- Download the mod.
- Go to %appdata%.
- Go to .minecraft/mods folder.
- If the “mods” folder does not exist you can create one.
- Drag and drop the downloaded jar (zip) file into that.
- Enjoy the mod.