open5gs/docs/_docs/platform/02-centos.md

title	head_inline
CentOS	<style> .blue { color: blue; } </style>

This guide is based on CentOS 7 Distribution. {: .blue}

Getting MongoDB

---

Create the MongoDB repository file.

$ sudo sh -c 'cat << EOF > /etc/yum.repos.d/mongodb-org-3.4.repo
[mongodb-org-3.4]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/\$releasever/mongodb-org/3.4/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-3.4.asc
EOF'

Install MongoDB with Package Manager.

sudo yum -y install mongodb-org
sudo systemctl start mongod (if '/usr/bin/mongod' is not running)

Setting up TUN device (No persistent after rebooting)

---

Create the TUN device. Interface name will be pgwtun.

$ sudo yum -y install iproute
$ sudo ip tuntap add name pgwtun mode tun
$ ip link show

Then, to support IPv6-enabled UEs, you must configure your TUN device to support IPv6.

$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
1

$ sudo -w net.ipv6.conf.pgwtun.disable_ipv6=0

$ sysctl -n net.ipv6.conf.pgwtun.disable_ipv6
0

Note: If your TUN device already supports IPv6, you can skip this steps above. {: .notice--warning}

You are now ready to set the IP address on TUN device.

$ sudo ip addr add 45.45.0.1/16 dev pgwtun
$ sudo ip addr add cafe::1/64 dev pgwtun

Make sure it is set up properly.

$ sudo ip link set pgwtun up
$ ip link show

Tip: The script provided in [$GIT_REPO/support/network/restart.sh](https://github.com/{{ site.github_username }}/nextepc/blob/master/support/network/restart.sh) makes it easy to configure the TUN device as follows:
$ sudo ./support/network/restart.sh {: .notice--info}

Building NextEPC

---

Install the depedencies for building the source code.

$ sudo yum -y install git flex bison autoconf libtool lksctp-tools-devel libidn-devel gnutls-devel libgcrypt-devel openssl-devel cyrus-sasl-devel libyaml-devel

Configure EPEL package and install mongo-c-driver.

$ sudo yum -y install epel-release
$ sudo yum -y install mongo-c-driver-devel

Git clone with --recursive option.

➜  open5gs git clone --recursive https://github.com/{{ site.github_username }}/nextepc

To compile with autotools:

➜  open5gs cd nextepc
➜  nextepc git:(master) ✗ autoreconf -iv
➜  nextepc git:(master) ✗ ./configure --prefix=`pwd`/install
➜  nextepc git:(master) ✗ make -j `nproc`

Check whether the compilation is correct.

➜  nextepc git:(master) ✗ make check

You need to perform the installation process.

➜  nextepc git:(master) ✗ make install

Check whether the installation is correct.

➜  nextepc git:(master) ✗ ./test/testcomplex
s1setup_test        : SUCCESS
attach_test         : SUCCESS
volte_test          : SUCCESS
handover_test       : SUCCESS
All tests passed.

Tip: You can also check the result of ./test/testcomplex with a tool that captures packets. If you are running wireshark, select the loopback interface and set FILTER to s1ap || gtpv2 || diameter || gtp. You can see the virtually created packets. testcomplex.pcapng({{ site.url }}{{ site.baseurl }}/assets/pcapng/testcomplex.pcapng) {: .notice--info}

Building WebUI of NextEPC

---

Node.js is required to build WebUI of NextEPC

$ curl --silent --location https://rpm.nodesource.com/setup_8.x | sudo bash -
$ sudo yum -y install nodejs

Install the dependencies to run WebUI

➜  nextepc git:(master) ✗ cd webui
➜  webui git:(master) ✗ npm install

The WebUI runs as an npm script.

➜  webui git:(master) ✗ npm run dev