Centos8 iot EMQX setup and installation

The installation

Emqx official documentation address: docs.emqx.cn/broker/v4.3…

One-click Installation of Shell Scripts (Linux)

curl https://repos.emqx.io/install_emqx.sh | bash
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Package Manager Installation (Linux)

#CentOS

Dependency packages required to install

$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2

 
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Run the following command to set the stable repository. CentOS 7 is used as an example

$ sudo yum-config-manager --add-repo https://repos.emqx.io/emqx-ce/redhat/centos/7/emqx-ce.repo

 
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Install the latest version of EMQ X Broker
```
$ sudo yum install emqx

 
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```
If you are prompted to accept the GPG key, ensure that the key matches FC84 1BA6 3775 5CA8 487b 1E3C C0B4 0946 3E64 0D53 and accept the fingerprint.

Install a specific version of EMQ X Broker

Querying the available version

$yum list emqx - showduplicates | sort - r emqx. X86_64 4.0.0-1. El7 emqx - stable emqx. X86_64 3.0.1-1. El7 emqx - stable Emqx. X86_64 3.0.0-1. El7 emqx - stable Copied!Copy the code

Install a specific version, such as 4.0.0, based on the version string in the second column
```
$sudo yum install emqx-4.0.0 Copied!Copy the code
```

Start EMQ X Broker

Direct start

$emqx start emqx 4.0.0 is started successfully! $emqx_ctl status Node '[email protected]' is started emqx V4.0.0 is running Copied!Copy the code

Systemctl start

$ sudo systemctl start emqx

 
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The service start

$ sudo service emqx start

 
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Stop the EMQ X Broker

$ emqx stop
ok

 
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Uninstall EMQ X Broker
```
$ sudo yum remove emqx
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```
Ubuntu, Debian

Dependency packages required to install

$ sudo apt update && sudo apt install -y \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

 
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Add EMQ X’s official GPG key

$ curl -fsSL https://repos.emqx.io/gpg.pub | sudo apt-key add -

 
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Authentication key

$ sudo apt-key fingerprint 3E640D53

pub   rsa2048 2019-04-10 [SC]
    FC84 1BA6 3775 5CA8 487B  1E3C C0B4 0946 3E64 0D53
uid           [ unknown] emqx team <[email protected]>

 
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Use the following command to set up the stable repository. To add unstable repository, add the word unstable after the word stable in the following command.
```
$ sudo add-apt-repository \ "deb [arch=amd64] https://repos.emqx.io/emqx-ce/deb/ubuntu/ \ ./$(lsb_release -cs) \ stable"  Copied!Copy the code
```
The lsb_release-cs subcommand returns the name of the distribution, such as Xenial. Sometimes, in distributions like Linux Mint, you may need to change $(LSB_release-cs) to your parent distribution. For example, if you use Linux Mint Tessa, you can use Bionic. EMQ X Broker makes no warranties for untested and unsupported distributions.

Update apt package index

$ sudo apt update

 
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Install the latest version of EMQ X Broker
```
$ sudo apt install emqx

 
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```
In cases where multiple EMQ X repositories are enabled, the latest version of EMQ X Broker is automatically installed if the apt install and apt update commands do not specify a version number. This can be a problem for users with stability requirements.