Dev Environment Fedora 28

กำหนดการของการ release fedora 28
2018-04-03 Beta Release (Target #1)
2018-04-17 Final Freeze (*)
2018-05-01 Fedora 28 Final Release (GA) (Preferred Target)
2018-05-08 Fedora 28 Final Release (GA) (Target #1)

ติดตั้ง Dev Environment สำหรับ Fedora 28 วางแผนการใช้งาน Vagrant บน Linux libvirt ไม่ใช่ผ่านทาง Virtualbox มีขั้นตอนดังนี้
1) ติดตั้ง package ที่จำเป็น และ ต้องมีการ enable vt-x ใน Bios ก่อน

$ egrep '^flags.*(vmx|svm)' /proc/cpuinfo

$ sudo su -
$ sudo dnf groupinfo virtualization
$ sudo dnf -y install qemu-kvm libvirt virt-install bridge-utils
$ sudo  lsmod | grep kvm 
kvm_intel             176128  0
kvm                   708608  1 kvm_intel
irqbypass              16384  1 kvm

# systemctl start libvirtd
# systemctl enable libvirtd

$ egrep '^flags.*(vmx|svm)' /proc/cpuinfo

$ sudo su -

$ sudo dnf groupinfo virtualization

$ sudo dnf -y install qemu-kvm libvirt virt-install bridge-utils

$ sudo lsmod | grep kvm

kvm_intel 176128 0

kvm 708608 1 kvm_intel

irqbypass 16384 1 kvm

# systemctl start libvirtd

# systemctl enable libvirtd

2) install Virt-manager เพื่อใช้เป็น gui

$ sudo  dnf install virt-manager
$ sudo  gpasswd -a "${USER}" libvirt

Adding user <yourusername> to group libvirt
$ virt-manager

$ sudo dnf install virt-manager

$ sudo gpasswd -a "${USER}" libvirt

Adding user <yourusername> to group libvirt

$ virt-manager

default network libvirt จะใช้ network ชื่อ virbr0 192.168.122.0/24

$ ip a s virbr0
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:a2:61:e8 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever

$ ip a s virbr0

4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000

link/ether 52:54:00:a2:61:e8 brd ff:ff:ff:ff:ff:ff

inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0

valid_lft forever preferred_lft forever

3 ต่อมาให้ติดตั้ง vagrant plugin

$ sudo dnf install ruby ruby-devel
$ vagrant plugin install vagrant-libvirt
(add centos 7 box)
$ vagrant box add centos/7
1) hyperv
2) libvirt         (<--- เลือก box สำหรับ libvirt)
3) virtualbox
4) vmware_desktop

Enter your choice: 2
==> box: Adding box 'centos/7' (v1802.01) for provider: libvirt
    box: Downloading: https://vagrantcloud.com/centos/boxes/7/versions/1802.01/providers/libvirt.box

(downloading box... กรุณารอซักครู)
(เมื่อ Download เสร็จสิ้นจะได้ผลดังนี้)
==> box: Successfully added box 'centos/7' (v1802.01) for 'libvirt'!

$ mkdir VagrantProj
$ cd VagrantProj
$ mkdir centos7
$ cd centos7

$ vagrant init centos/7

$ cat Vagrantfile

$ sudo dnf install ruby ruby-devel

$ vagrant plugin install vagrant-libvirt

(add centos 7 box)

$ vagrant box add centos/7

1) hyperv

2) libvirt (<--- เลือก box สำหรับ libvirt)

3) virtualbox

4) vmware_desktop

Enter your choice: 2

==> box: Adding box 'centos/7' (v1802.01) for provider: libvirt

box: Downloading: https://vagrantcloud.com/centos/boxes/7/versions/1802.01/providers/libvirt.box

(downloading box... กรุณารอซักครู)

(เมื่อ Download เสร็จสิ้นจะได้ผลดังนี้)

==> box: Successfully added box 'centos/7' (v1802.01) for 'libvirt'!

$ mkdir VagrantProj

$ cd VagrantProj

$ mkdir centos7

$ cd centos7

$ vagrant init centos/7

$ cat Vagrantfile

file Vagrantfile ที่ปรับเปลี่ยนตามความต้องการ

# -*- mode: ruby -*-
# vi: set ft=ruby :

Vagrant.configure("2") do |config|
  config.vm.box = "centos/7"

  config.vm.network "forwarded_port", guest: 8000, host: 8000, host_ip: "127.0.0.1"
  config.vm.network "private_network", ip: "192.168.33.10"

  config.vm.provider "virtualbox" do |vb|
     vb.memory = "1024"
  end
  config.vm.provision "shell", inline: <<-SHELL
     yum  update -y
  SHELL
end

# -*- mode: ruby -*-

# vi: set ft=ruby :

Vagrant.configure("2") do |config|

config.vm.box = "centos/7"

config.vm.network "forwarded_port", guest: 8000, host: 8000, host_ip: "127.0.0.1"

config.vm.network "private_network", ip: "192.168.33.10"

config.vm.provider "virtualbox" do |vb|

vb.memory = "1024"

end

config.vm.provision "shell", inline: <<-SHELL

yum update -y

SHELL

end

เริ่มต้น boot image

$ vagrant up --provider=libvirt

1	$ vagrant up --provider=libvirt

หากต้องการใช้งาน image อื่นสามารถไปค้นหาได้ที่ http://www.vagrantbox.es/ และ https://app.vagrantup.com/boxes/search

4 Connect ไปยัง box

$ brctl showmacs virbr0
port no	mac addr		is local?	ageing timer
  1	52:54:00:a2:61:e8	yes		   0.00
  1	52:54:00:a2:61:e8	yes		   0.00

$ vagrant ssh 
[vagrant@localhost ~]$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 52:54:00:02:e4:88 brd ff:ff:ff:ff:ff:ff
    inet 192.168.121.75/24 brd 192.168.121.255 scope global dynamic eth0
       valid_lft 3461sec preferred_lft 3461sec
    inet6 fe80::5054:ff:fe02:e488/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 52:54:00:da:d4:fb brd ff:ff:ff:ff:ff:ff
    inet 192.168.33.10/24 brd 192.168.33.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::5054:ff:feda:d4fb/64 scope link 
       valid_lft forever preferred_lft forever

[vagrant@localhost ~]$ ip r
default via 192.168.121.1 dev eth0 proto static metric 100 
192.168.33.0/24 dev eth1 proto kernel scope link src 192.168.33.10 metric 100 
192.168.121.0/24 dev eth0 proto kernel scope link src 192.168.121.75 metric 100

$ brctl showmacs virbr0

port no mac addr is local? ageing timer

1 52:54:00:a2:61:e8 yes 0.00

$ vagrant ssh

[vagrant@localhost ~]$ ip a

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet 127.0.0.1/8 scope host lo

valid_lft forever preferred_lft forever

inet6 ::1/128 scope host

valid_lft forever preferred_lft forever

2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000

link/ether 52:54:00:02:e4:88 brd ff:ff:ff:ff:ff:ff

inet 192.168.121.75/24 brd 192.168.121.255 scope global dynamic eth0

valid_lft 3461sec preferred_lft 3461sec

inet6 fe80::5054:ff:fe02:e488/64 scope link

valid_lft forever preferred_lft forever

3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000

link/ether 52:54:00:da:d4:fb brd ff:ff:ff:ff:ff:ff

inet 192.168.33.10/24 brd 192.168.33.255 scope global eth1

valid_lft forever preferred_lft forever

inet6 fe80::5054:ff:feda:d4fb/64 scope link

valid_lft forever preferred_lft forever

[vagrant@localhost ~]$ ip r

default via 192.168.121.1 dev eth0 proto static metric 100

192.168.33.0/24 dev eth1 proto kernel scope link src 192.168.33.10 metric 100

192.168.121.0/24 dev eth0 proto kernel scope link src 192.168.121.75 metric 100

5 ติดตั้ง Docker ใน vm ที่สร้างจาก Vagrant

$ sudo yum install -y yum-utils \
 device-mapper-persistent-data \
 lvm2
(stable)
$ sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
(edge)
$ sudo yum-config-manager --enable docker-ce-edge
(test)
$ sudo yum-config-manager --enable docker-ce-test

$ sudo yum install docker-ce -y

$ sudo systemctl start docker
$ sudo systemctl enable docker
$ sudo  gpasswd -a "${USER}"  docker
Adding user vagrant to group docker

(verify)
$ sudo docker run hello-world
Hello from Docker!

$ sudo docker run -it ubuntu bash
$ root@f83f2305840a:/# root@f83f2305840a:/# cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.4 LTS"

$ reboot

$ sudo yum install -y yum-utils \

device-mapper-persistent-data \

lvm2

(stable)

$ sudo yum-config-manager \

--add-repo \

https://download.docker.com/linux/centos/docker-ce.repo

(edge)

$ sudo yum-config-manager --enable docker-ce-edge

(test)

$ sudo yum-config-manager --enable docker-ce-test

$ sudo yum install docker-ce -y

$ sudo systemctl start docker

$ sudo systemctl enable docker

$ sudo gpasswd -a "${USER}" docker

Adding user vagrant to group docker

(verify)

$ sudo docker run hello-world

Hello from Docker!

$ sudo docker run -it ubuntu bash

$ root@f83f2305840a:/# root@f83f2305840a:/# cat /etc/lsb-release

DISTRIB_ID=Ubuntu

DISTRIB_RELEASE=16.04

DISTRIB_CODENAME=xenial

DISTRIB_DESCRIPTION="Ubuntu 16.04.4 LTS"

$ reboot

6 ทดสอบ Django
– สร้าง directory ว่างๆ
– สร้าง Dockerfile

mkdir django
cd django
vi Dockerfile

mkdir django

cd django

vi Dockerfile

สร้าง Dockerfile

 FROM python:3
 ENV PYTHONUNBUFFERED 1
 RUN mkdir /code
 WORKDIR /code
 ADD requirements.txt /code/
 RUN pip install -r requirements.txt
 ADD . /code/

FROM python:3

ENV PYTHONUNBUFFERED 1

RUN mkdir /code

WORKDIR /code

ADD requirements.txt /code/

RUN pip install -r requirements.txt

ADD . /code/

สร้าง requirements.txt

vi requirements.txt
Django
psycopg2

vi requirements.txt

Django

psycopg2

สร้าง docker-compose.yml

version: '3'

services:
  db:
    image: postgres
  web:
    build: .
    command: python3 manage.py runserver 0.0.0.0:8000
    volumes:
      - .:/code
    ports:
      - "8000:8000"
    depends_on:
      - db

version: '3'

services:

db:

image: postgres

web:

build: .

command: python3 manage.py runserver 0.0.0.0:8000

volumes:

- .:/code

ports:

- "8000:8000"

depends_on:

- db

install docker-compose

$ sudo curl -L https://github.com/docker/compose/releases/download/1.20.1/docker-compose-`uname -s`-`uname -m` \
-o /usr/local/bin/docker-compose
$ sudo chmod +x /usr/local/bin/docker-compose
$ vi ~/.bash_profile
PATH=$PATH:$HOME/.local/bin:$HOME/bin:/usr/local/bin/

$ sudo docker-compose run web django-admin.py startproject composeexample .

ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

$ sudo curl -L https://github.com/docker/compose/releases/download/1.20.1/docker-compose-`uname -s`-`uname -m` \

-o /usr/local/bin/docker-compose

$ sudo chmod +x /usr/local/bin/docker-compose

$ vi ~/.bash_profile

PATH=$PATH:$HOME/.local/bin:$HOME/bin:/usr/local/bin/

$ sudo docker-compose run web django-admin.py startproject composeexample .

ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

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