Vagrant Cloudを触るときに参考にした
Vagrant CloudのVagrant Shareを試してみたら凄すぎて鼻血出た - 憂鬱な世界にネコパンチ！
のリンクの最後に
https://github.com/tmknom/study-vagrant
というvagrantの入門者向けテキストへのリンクがあって、その中身を見てたら複数サーバを一発で立ち上げる方法が書かれてあった。Multi-Machine - Vagrant Documentationの存在もすっかり忘れていたので
「vagrantのインスタンスが複数たっている場合のvagrantの挙動」
を遊びながら調べてみる。24日目: windowsクリーンインストール その2 - わすれっぽいきみえでチャレンジしてみたいって言ってたしね。
vagrantで複数インスタンスを立ち上げてみる
vim Vagrantfile
# -*- mode: ruby -*- # vi: set ft=ruby : # Vagrantfile API/syntax version. Don't touch unless you know what you're doing! VAGRANTFILE_API_VERSION = "2" Vagrant.configure(VAGRANTFILE_API_VERSION) do |config| config.vm.box = "chef/centos-6.5" config.vm.define "web_server" do |web| web.vm.network :private_network, ip: "192.168.33.10" end config.vm.define "db_server" do |db| db.vm.network :private_network, ip: "192.168.33.20" end end
上記のようにVagrantfileを編集したら実際にvagrantを立ち上げてみる。
$ vagrant up Bringing machine 'web_server' up with 'virtualbox' provider... Bringing machine 'db_server' up with 'virtualbox' provider... ==> web_server: Importing base box 'chef/centos-6.5'... ==> web_server: Matching MAC address for NAT networking... ==> web_server: Checking if box 'chef/centos-6.5' is up to date... ==> web_server: Setting the name of the VM: centos65_web_server_1396764484965_96227 ==> web_server: Clearing any previously set network interfaces... ==> web_server: Preparing network interfaces based on configuration... web_server: Adapter 1: nat ==> web_server: Forwarding ports... web_server: 22 => 2222 (adapter 1) ==> web_server: Booting VM... ==> web_server: Waiting for machine to boot. This may take a few minutes... web_server: SSH address: 127.0.0.1:2222 web_server: SSH username: vagrant web_server: SSH auth method: private key web_server: Error: Connection timeout. Retrying... ==> web_server: Machine booted and ready! (省略) ==> web_server: Checking for guest additions in VM... ==> web_server: Mounting shared folders... web_server: /vagrant => /Users/kimikimi714/Documents/vagrant/centos65 ==> db_server: Importing base box 'chef/centos-6.5'... ==> db_server: Matching MAC address for NAT networking... ==> db_server: Checking if box 'chef/centos-6.5' is up to date... ==> db_server: Setting the name of the VM: centos65_db_server_1396764646844_69807 ==> db_server: Fixed port collision for 22 => 2222. Now on port 2200. ==> db_server: Clearing any previously set network interfaces... ==> db_server: Preparing network interfaces based on configuration... db_server: Adapter 1: nat ==> db_server: Forwarding ports... db_server: 22 => 2200 (adapter 1) ==> db_server: Booting VM... ==> db_server: Waiting for machine to boot. This may take a few minutes... db_server: SSH address: 127.0.0.1:2200 db_server: SSH username: vagrant db_server: SSH auth method: private key db_server: Error: Connection timeout. Retrying... ==> db_server: Machine booted and ready! (省略) ==> db_server: Checking for guest additions in VM... ==> db_server: Mounting shared folders... db_server: /vagrant => /Users/kimikimi714/Documents/vagrant/centos65 $ vagrant status Current machine states: web_server running (virtualbox) db_server running (virtualbox) This environment represents multiple VMs. The VMs are all listed above with their current state. For more information about a specific VM, run `vagrant status NAME`.
ふむ。ここまでは特に問題なく動作した。
/vagrantフォルダの挙動
web_serverとdb_serverの/vagrant以下にはどんな風にファイルが共有されるんだろう。
$ touch a $ vagrant ssh web_server Last login: Sun Apr 6 07:33:16 2014 from 10.0.2.2 [vagrant@web_server ~]$ ls -la /vagrant 合計 8 drwxr-xr-x. 1 vagrant vagrant 204 4月 6 08:04 2014 . dr-xr-xr-x. 23 root root 4096 4月 6 07:27 2014 .. drwxr-xr-x. 1 vagrant vagrant 102 3月 3 14:41 2014 .vagrant -rw-r--r--. 1 vagrant vagrant 455 4月 6 07:27 2014 Vagrantfile -rw-r--r--. 1 vagrant vagrant 0 4月 6 08:04 2014 a drwxr-xr-x. 3 vagrant vagrant 102 4 5 16:05 nodes [vagrant@web_server ~]$ touch /vagrant/b [vagrant@web_server ~]$ exit logout Connection to 127.0.0.1 closed. $ ls -la total 8 drwxr-xr-x 7 kimikimi714 group 238 4 6 17:07 . drwxr-xr-x 3 kimikimi714 group 102 4 6 13:57 .. drwxr-xr-x 3 kimikimi714 group 102 3 3 23:41 .vagrant -rw-r--r-- 1 kimikimi714 group 455 4 6 16:27 Vagrantfile -rw-r--r-- 1 kimikimi714 group 0 4 6 17:04 a -rw-r--r-- 1 kimikimi714 group 0 4 6 17:07 b drwxr-xr-x 3 kimikimi714 group 102 4 5 16:05 nodes $ vagrant ssh db_server Last login: Sun Apr 6 07:33:49 2014 from 10.0.2.2 [vagrant@localhost ~]$ ls -la /vagrant/ 合計 8 drwxr-xr-x. 1 vagrant vagrant 238 4月 6 08:07 2014 . dr-xr-xr-x. 23 root root 4096 4月 6 07:29 2014 .. drwxr-xr-x. 1 vagrant vagrant 102 3月 3 14:41 2014 .vagrant -rw-r--r--. 1 vagrant vagrant 455 4月 6 07:27 2014 Vagrantfile -rw-r--r--. 1 vagrant vagrant 0 4月 6 08:04 2014 a -rw-r--r--. 1 vagrant vagrant 0 4月 6 08:07 2014 b drwxr-xr-x. 1 vagrant vagrant 102 4月 5 07:05 2014 nodes
ふむふむ。ホストのディレクトリとweb_serverの/vagrant、db_serverの/vagrantは同じファイルが同期されてる。
どちらかのゲストサーバにだけ同期させたいファイルがある場合にはshared_folderの設定を別途する必要がありそう。
sandboxモードをどちらかにだけ適応したい場合
saharaプラグインをどっちかのサーバにだけ適応したいと思ったときはどうしたらいいんだろう。
$ vagrant sandbox status [db_server] Sandbox mode is off [web_server] Sandbox mode is off $ vagrant sandbox on 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% $ vagrant sandbox status [db_server] Sandbox mode is on [web_server] Sandbox mode is on $ vagrant sandbox off 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% $ vagrant sandbox status [db_server] Sandbox mode is off [web_server] Sandbox mode is off $ vagrant sandbox on web_server 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% $ vagrant sandbox status [db_server] Sandbox mode is off [web_server] Sandbox mode is on $ vagrant sandbox off web_server 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100% $ vagrant sandbox status [db_server] Sandbox mode is off [web_server] Sandbox mode is off
ふむふむ。どのサーバもsandboxモードにしたいならvagrant sandbox onで、サーバを指定したいときはvagrant sandbox on server_nameでいけるのね。vagrant sandbox statusはサーバを指定しないといけない場合が思い浮かばないから実験してない。
chefのレシピをどちらかのサーバにだけ適応したい場合
Vagrantfile 1つでまとめて立ち上げられたvagrantインスタンスに別々のレシピを流し込みたいときはどうしたらいいんだろう。
試しにvagrant ssh-configをたたいてみる。
$ vagrant ssh-config This command requires a specific VM name to target in a multi-VM environment.
なるほど、db_serverかweb_serverかを指定しないといけないのか。じゃあそれぞれvagrant ssh-configをたたいてみよう。
$ vagrant ssh-config web_server Host web_server HostName 127.0.0.1 User vagrant Port 2222 UserKnownHostsFile /dev/null StrictHostKeyChecking no PasswordAuthentication no IdentityFile /Users/kimikimi714/.vagrant.d/insecure_private_key IdentitiesOnly yes LogLevel FATAL $ vagrant ssh-config db_server Host db_server HostName 127.0.0.1 User vagrant Port 2200 UserKnownHostsFile /dev/null StrictHostKeyChecking no PasswordAuthentication no IdentityFile /Users/kimikimi714/.vagrant.d/insecure_private_key IdentitiesOnly yes LogLevel FATAL
おお、ポートがちがう。ということは異なるポートを指定して、それぞれ違うレシピが適応できそうだな。ひとまずknife soloを実行できる環境を作ろう。
$ vagrant ssh-config web_server >> ~/.ssh/config $ vagrant ssh-config db_server >> ~/.ssh/config $ knife solo prepare web_server $ knife solo prepare db_serber
次に実際にレシピを適応してみる。
helloレシピとbyeレシピを以下のようにして用意しておく。
vim site-cookbooks/hello/recipes/default.rb
log "Hello World"
vim site-cookbooks/bye/recipes/default.rb
log "Good Bye"
で、それぞれのサーバで各レシピが呼べるようにしておく。
vim nodes/web_server.json
{ "run_list":[ "recipe[hello]" ] }
vim nodes/db_server.json
{ "run_list":[ "recipe[bye]" ] }
あとは料理するだけ
$ knife solo cook web_server Running Chef on web_server... Checking Chef version... Uploading the kitchen... Generating solo config... Running Chef... Starting Chef Client, version 11.10.4 Compiling Cookbooks... Converging 1 resources Recipe: hello::default * log[Hello World] action write Running handlers: Running handlers complete Chef Client finished, 1/1 resources updated in 0.482467917 seconds $ knife solo cook db_server Running Chef on db_server... Checking Chef version... Uploading the kitchen... Generating solo config... Running Chef... Starting Chef Client, version 11.10.4 Compiling Cookbooks... Converging 1 resources Recipe: bye::default * log[Good bye] action write Running handlers: Running handlers complete Chef Client finished, 1/1 resources updated in 0.68323387 seconds
うん。ちゃんとそれぞれのサーバにレシピを適応できる。
どちらかのサーバにだけレシピを適応するのも簡単に出来た。
vagrantの複数インスタンスを一度に立ち上げるときにそれぞれ違うOSのバージョンで立ち上げる
$ vagrant box list chef/centos-6.5 (virtualbox) chef/debian-7.4 (virtualbox)
vagrantのboxが既に上記のような状態だったとして、どうやったら各インスタンスを違うOSで立ち上げられるか。
Multi-Machine - Vagrant Documentationの例に書かれたVagrantfileを参考にすると
vim Vagrantfile
# -*- mode: ruby -*- # vi: set ft=ruby : # Vagrantfile API/syntax version. Don't touch unless you know what you're doing! VAGRANTFILE_API_VERSION = "2" Vagrant.configure(VAGRANTFILE_API_VERSION) do |config| config.vm.define "web_server" do |web| web.vm.box = "chef/centos-6.5" web.vm.network :private_network, ip: "192.168.33.10" end config.vm.define "db_server" do |db| db.vm.box = "chef/debian-7.4" db.vm.network :private_network, ip: "192.168.33.20" end end
この状態で一度vagrant destroyしておき、再びvagrant upを実行すると
$ vagrant up Bringing machine 'web_server' up with 'virtualbox' provider... Bringing machine 'db_server' up with 'virtualbox' provider... ==> web_server: Checking if box 'chef/centos-6.5' is up to date... (省略) ==> db_server: Importing base box 'chef/debian-7.4'... (省略) $ vagrant ssh web_server Last login: Mon Apr 21 14:18:53 2014 from 10.0.2.2 [vagrant@localhost ~]$ cat /etc/redhat-release CentOS release 6.5 (Final) [vagrant@localhost ~]$ exit logout Connection to 127.0.0.1 closed. $ vagrant ssh db_server Linux packer-debian-7 3.2.0-4-amd64 #1 SMP Debian 3.2.54-2 x86_64 The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. Last login: Sun Mar 30 20:25:56 2014 from 10.0.2.2 vagrant@packer-debian-7:~$ cat /etc/debian_version 7.4 vagrant@packer-debian-7:~$ exit logout Connection to 127.0.0.1 closed.
いけた。web_serverはcentos、db_serverはdebianで作成できたぞ。
ていうかchef/debian-7.4のboxってそもそもpackerで作成されてたっぽい。知らなかったー。
