vagrant@vagrant-ubuntu-trusty-32:$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# Source interfaces
# Please check /etc/network/interfaces.d before changing this file
# as interfaces may have been defined in /etc/network/interfaces.d
# NOTE: the primary ethernet device is defined in
# /etc/network/interfaces.d/eth0
# See LP: #1262951
source /etc/network/interfaces.d/*.cfg
#VAGRANT-BEGIN
# The contents below are automatically generated by Vagrant. Do not modify.
auto eth1
iface eth1 inet static
address 192.168.33.10
netmask 255.255.255.0 ←この下に普通はgatewayやdns-nameserversが書かれていると思います。
#VAGRANT-END
$ route -n
vagrant@vagrant-ubuntu-trusty-32:$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.2.2 0.0.0.0 UG 0 0 0 eth0
10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 ←なぜeth0が２つある？
192.168.33.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
上記を踏まえ、教えていただきたいことは以下の４点です。
0. /etc/network/interfacesの中にgatewayとdns-nameserversが書かれていないのですが、このこととUbuntuで名前解決ができないことは関係ありそうですか？
0. そうだった場合、/etc/network/interfacesにgatewayとdns-nameserversを書き入れる必要があると思いますが、書く内容はGateway 10.0.2.2, dns-nameservers 8.8.8.8で大丈夫でしょうか？
0. そうだった場合、# The contents below are automatically generated by Vagrant. Do not modify.とあるようにvi /etc/network/interfacesでは編集できないのですが（実際にやってみてダメでした）、どうやって追記するのですか？
0. $ route -nの結果にeth0が２つ出ていますが、これは問題ないですか？
vagrant@vagrant-ubuntu-trusty-32:$ ip route show
default via 10.0.2.2 dev eth0
10.0.2.0/24 dev eth0 proto kernel scope link src 10.0.2.15
192.168.33.0/24 dev eth1 proto kernel scope link src 192.168.33.10
追記
Vagrantfile
1# -*- mode: ruby -*-
2# vi: set ft=ruby :
34# All Vagrant configuration is done below. The "2" in Vagrant.configure
5# configures the configuration version (we support older styles for
6# backwards compatibility). Please don't change it unless you know what
7# you're doing.
8Vagrant.configure(2) do |config|
9 # The most common configuration options are documented and commented below.
10 # For a complete reference, please see the online documentation at
11 # https://docs.vagrantup.com.
1213 # Every Vagrant development environment requires a box. You can search for
14 # boxes at https://atlas.hashicorp.com/search.
15 config.vm.box = "ubuntu/trusty32"
16 # Disable automatic box update checking. If you disable this, then
17 # boxes will only be checked for updates when the user runs
18 # `vagrant box outdated`. This is not recommended.
19 # config.vm.box_check_update = false
2021 # Create a forwarded port mapping which allows access to a specific port
22 # within the machine from a port on the host machine. In the example below,
23 # accessing "localhost:8080" will access port 80 on the guest machine.
24 config.vm.network "forwarded_port", guest: 3000, host: 3000
2526 # Create a private network, which allows host-only access to the machine
27 # using a specific IP.
28 config.vm.network "private_network", ip: "192.168.33.10"
2930 # Create a public network, which generally matched to bridged network.
31 # Bridged networks make the machine appear as another physical device on
32 # your network.
33 # config.vm.network "public_network"
3435 # Share an additional folder to the guest VM. The first argument is
36 # the path on the host to the actual folder. The second argument is
37 # the path on the guest to mount the folder. And the optional third
38 # argument is a set of non-required options.
39 config.vm.synced_folder "./", "/home/vagrant"
4041 # Provider-specific configuration so you can fine-tune various
42 # backing providers for Vagrant. These expose provider-specific options.
43 # Example for VirtualBox:
44 #
45 # config.vm.provider "virtualbox" do |vb|
46 # # Display the VirtualBox GUI when booting the machine
47 # vb.gui = true
48 #
49 # # Customize the amount of memory on the VM:
50 # vb.memory = "1024"
51 # end
52 #
53 # View the documentation for the provider you are using for more
54 # information on available options.
5556 # Define a Vagrant Push strategy for pushing to Atlas. Other push strategies
57 # such as FTP and Heroku are also available. See the documentation at
58 # https://docs.vagrantup.com/v2/push/atlas.html for more information.
59 # config.push.define "atlas" do |push|
60 # push.app = "YOUR_ATLAS_USERNAME/YOUR_APPLICATION_NAME"
61 # end
6263 # Enable provisioning with a shell script. Additional provisioners such as
64 # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
65 # documentation for more information about their specific syntax and use.
66 config.vm.provision "shell", inline: <<-SHELLSC
67 function install {
68 echo installing $1
69 shift
70 apt-get -y install "$@" >/dev/null 2>&1
71 }
7273 echo updating package information
74 apt-add-repository -y ppa:brightbox/ruby-ng >/dev/null 2>&1
75 apt-get -y update >/dev/null 2>&1
7677 install 'development tools' build-essential
7879 install Ruby ruby2.3 ruby2.3-dev
80 update-alternatives --set ruby /usr/bin/ruby2.3 >/dev/null 2>&1
81 update-alternatives --set gem /usr/bin/gem2.3 >/dev/null 2>&1
82 echo installing Bundler
83 echo "gem: --no-ri --no-rdoc" > ~/.gemrc
84 gem install bundler -N >/dev/null 2>&1
85 install Git git
86 install SQLite sqlite3 libsqlite3-dev
87 install 'Nokogiri dependencies' libxml2 libxml2-dev libxslt1-dev zlib1g-dev
88 install 'ExecJS runtime' nodejs
89 echo 'Installing rails'
90 gem install rails -v '5.1.5'
91 gem install railties
92 gem install listen
93 gem install puma
94 gem install sass
95 gem install tilt
96 gem install spring
97 gem install byebug
98 gem install chromedriver-helper
99 gem install sqlite3
100 update-locale LANG=en_US.UTF-8 LANGUAGE=en_US.UTF-8 LC_ALL=en_US.UTF-8
101 echo 'You are now on Rails!'
102 echo ' o o o o o o o . . . ______________________________ _____=======_||____'
103 echo ' o _____ | | | |'
104 echo ' .][__n_n_|DD[ ====_____ | | | |'
105 echo ' >(________|__|_[_________]_|____________________________|_|_________________|'
106 echo ' _/oo OOOOO oo` ooo ooo `o!o!o o!o!o` `o!o o!o` '
107 echo ' -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-'
108 SHELLSC
109end
110
Q&A
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