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# Install Dependencies
- [CentOS 6](#centos-6)
- [CentOS 7](#centos-7)
- [Ubuntu 16.04 & 18.04](#ubuntu-1604--1804)
- [Debian 9 & 10](#debian-9--10)
- [Mac OSX](#mac-osx)
- [How to compile the OpenResty](#how-to-compile-the-openresty)
- [Note](#note)

CentOS 6
========

```shell
# add OpenResty source
sudo yum install yum-utils
sudo yum-config-manager --add-repo https://openresty.org/package/centos/openresty.repo

# install OpenResty, etcd and some compilation tools
sudo yum install -y openresty curl git gcc luarocks lua-devel make

wget https://github.com/etcd-io/etcd/releases/download/v3.3.13/etcd-v3.3.13-linux-amd64.tar.gz
tar -xvf etcd-v3.3.13-linux-amd64.tar.gz && \
    cd etcd-v3.3.13-linux-amd64 && \
    sudo cp -a etcd etcdctl /usr/bin/

# start etcd server
nohup etcd &
```

CentOS 7
========

```shell
# install epel, `luarocks` need it.
wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
sudo rpm -ivh epel-release-latest-7.noarch.rpm

# add OpenResty source
sudo yum install yum-utils
sudo yum-config-manager --add-repo https://openresty.org/package/centos/openresty.repo

# install OpenResty, etcd and some compilation tools
sudo yum install -y etcd openresty curl git gcc luarocks lua-devel

# start etcd server
sudo service etcd start
```

Ubuntu 16.04 & 18.04
====================

```shell
# add OpenResty source
wget -qO - https://openresty.org/package/pubkey.gpg | sudo apt-key add -
sudo apt-get update
sudo apt-get -y install software-properties-common
sudo add-apt-repository -y "deb http://openresty.org/package/ubuntu $(lsb_release -sc) main"
sudo apt-get update

# install OpenResty, etcd and some compilation tools
sudo apt-get install -y git etcd openresty curl luarocks

# start etcd server
sudo service etcd start
```

Debian 9 & 10
=============

```shell
# optional
sed -i 's|^deb http://deb.debian.org/debian|deb http://mirrors.huaweicloud.com/debian|g' /etc/apt/sources.list
sed -i 's|^deb http://security.debian.org/debian-security|deb http://mirrors.huaweicloud.com/debian-security|g' /etc/apt/sources.list
apt update
apt install wget gnupg -y

# add OpenResty source
wget -qO - https://openresty.org/package/pubkey.gpg | sudo apt-key add -
sudo apt-get -y install software-properties-common
sudo add-apt-repository -y "deb http://openresty.org/package/debian $(lsb_release -sc) openresty"
sudo apt-get update

# install etcd
wget https://github.com/etcd-io/etcd/releases/download/v3.3.13/etcd-v3.3.13-linux-amd64.tar.gz
tar -xvf etcd-v3.3.13-linux-amd64.tar.gz && \
    cd etcd-v3.3.13-linux-amd64 && \
    sudo cp -a etcd etcdctl /usr/bin/

# install OpenResty and some compilation tools
sudo apt-get install -y git openresty curl luarocks make

# start etcd server
nohup etcd &
```

Mac OSX
=======

```shell
# install OpenResty, etcd and some compilation tools
brew install openresty/brew/openresty etcd luarocks curl git

# start etcd server with v2 protocol
etcd --enable-v2=true &
```

How to compile the OpenResty
============================

Compiling OpenResty from source is very complicated, it's not easy to make it clear. So we recommend that you refer to the official installation documentation.

http://openresty.org/en/linux-packages.html

Note
====
- Apache APISIX currently only supports the v2 protocol storage to etcd, but the latest version of etcd (starting with 3.4) has turned off the v2 protocol by default.

You need to add `--enable-v2=true` to the startup parameter to enable the v2 protocol. The development of the v3 protocol supporting etcd has begun and will soon be available.

- If you want use Tengine instead of OpenResty, please take a look at this installation step script [Install Tengine at Ubuntu](../.travis/linux_tengine_runner.sh).