Hi,
I am trying to build a CoreOS cluster in vagrant for my testing and I'm
stuck when I want to mount my Dockerfile on the guest machines.
I use the default Vagrantfile provided by CoreOS
<https://coreos.com/docs/running-coreos/platforms/vagrant/> (attached to
this email renamed to .txt so that google group UI doesn't complain).
Here is the error I get :
greg@skynet:~/coreos-vagrant$ vagrant up
Bringing machine 'core-01' up with 'virtualbox' provider...
Bringing machine 'core-02' up with 'virtualbox' provider...
Bringing machine 'core-03' up with 'virtualbox' provider...
==> core-01: Importing base box 'coreos-stable'...
==> core-01: Matching MAC address for NAT networking...
==> core-01: Checking if box 'coreos-stable' is up to date...
==> core-01: Setting the name of the VM: coreos-vagrant_core-01
_1431963017338_96941
==> core-01: Fixed port collision for 22 => 2222. Now on port 2202.
==> core-01: Clearing any previously set network interfaces...
==> core-01: Preparing network interfaces based on configuration...
core-01: Adapter 1: nat
core-01: Adapter 2: hostonly
==> core-01: Forwarding ports...
core-01: 22 => 2202 (adapter 1)
==> core-01: Running 'pre-boot' VM customizations...
==> core-01: Booting VM...
==> core-01: Waiting for machine to boot. This may take a few minutes...
core-01: SSH address: 127.0.0.1:2202
core-01: SSH username: core
core-01: SSH auth method: private key
core-01: Warning: Connection timeout. Retrying...
==> core-01: Machine booted and ready!
==> core-01: Setting hostname...
==> core-01: Configuring and enabling network interfaces...
==> core-01: Exporting NFS shared folders...
==> core-01: Preparing to edit /etc/exports. Administrator privileges will
be required...
● nfs-kernel-server.service - LSB: Kernel NFS server support
Loaded: loaded (/etc/init.d/nfs-kernel-server)
Active: active (running) since lun. 2015-05-18 16:36:06 CEST; 54min ago
Process: 6647 ExecStop=/etc/init.d/nfs-kernel-server stop (code=exited,
status=0/SUCCESS)
Process: 6655 ExecStart=/etc/init.d/nfs-kernel-server start (code=exited,
status=0/SUCCESS)
CGroup: /system.slice/nfs-kernel-server.service
└─6680 /usr/sbin/rpc.mountd --manage-gids
==> core-01: Mounting NFS shared folders...
The following SSH command responded with a non-zero exit status.
Vagrant assumes that this means the command failed!
mount -o 'nolock,vers=3,udp' 172.17.8.1:'/home/greg/Dockerfiles' /mnt/
Dockerfiles
Stdout from the command:
Stderr from the command:
mount.nfs: access denied by server while mounting 172.17.8.1:/home/greg/
Dockerfiles
After a little investigation I find that my machine has an extra ip address
that is used to connect to my host and obviously make everything fails
because it doesn't correspond to the /etc/exports one.
$ cat /etc/exports
# /etc/exports: the access control list for filesystems which may be
exported
# to NFS clients. See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes hostname1(rw,sync,no_subtree_check)
hostname2(ro,sync,no_subtree_check)
#
# Example for NFSv4:
# /srv/nfs4 gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
# /srv/nfs4/homes gss/krb5i(rw,sync,no_subtree_check)
# VAGRANT-BEGIN: 1001 b088e07b-39c6-4014-9bee-201347ffdf54
"/home/greg/Dockerfiles" 172.17.8.101(rw,no_subtree_check,all_squash,anonuid
=1001,anongid=1001,fsid=3565376335)
# VAGRANT-END: 1001 b088e07b-39c6-4014-9bee-201347ffdf54
$
$
$ vagrant ssh core-01
CoreOS stable (647.0.0)
core@core-01 ~ $ sudo mount -o 'nolock,vers=3,udp' 172.17.8.1:
'/home/greg/Dockerfiles' /mnt/Dockerfiles
mount.nfs: access denied by server while mounting 172.17.8.1:/home/greg/
Dockerfiles
core@core-01 ~ $ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default
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 fq_codel state UP
group default qlen 1000
link/ether 08:00:27:65:44:4f brd ff:ff:ff:ff:ff:ff
inet 10.0.2.15/24 brd 10.0.2.255 scope global dynamic eth0
valid_lft 85934sec preferred_lft 85934sec
inet6 fe80::a00:27ff:fe65:444f/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
link/ether 08:00:27:15:c4:e7 brd ff:ff:ff:ff:ff:ff
inet 172.17.8.126/24 brd 172.17.8.255 scope global dynamic eth1
valid_lft 724sec preferred_lft 724sec
inet 172.17.8.101/24 brd 172.17.8.255 scope global secondary eth1
valid_lft forever preferred_lft forever
inet6 fe80::a00:27ff:fe15:c4e7/64 scope link
valid_lft forever preferred_lft forever
core@core-01 ~ $ sudo ip a del 172.17.8.126/24 dev eth1
core@core-01 ~ $ sudo mount -o 'nolock,vers=3,udp' 172.17.8.1:
'/home/greg/Dockerfiles' /mnt/Dockerfiles
core@core-01 ~ $
So, yeah, now it works this way but this is a manual manipulation hence not
satisfying. Moreover, since I'm beginning, I am fast at destroying
everything to rebuild from clean environment and I would like this to be
automatic.
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# Size of the CoreOS cluster created by Vagrant
$num_instances=3
# Used to fetch a new discovery token for a cluster of size $num_instances
$new_discovery_url="https://discovery.etcd.io/new?size=#{$num_instances}";
# To automatically replace the discovery token on 'vagrant up', uncomment
# the lines below:
if File.exists?('user-data') && ARGV[0].eql?('up')
require 'open-uri'
require 'yaml'
token = open($new_discovery_url).read
data = YAML.load(IO.readlines('user-data')[1..-1].join)
if data['coreos'].key? 'etcd'
data['coreos']['etcd']['discovery'] = token
end
if data['coreos'].key? 'etcd2'
data['coreos']['etcd2']['discovery'] = token
end
yaml = YAML.dump(data)
File.open('user-data', 'w') { |file| file.write("#cloud-config\n\n#{yaml}") }
end
#
# coreos-vagrant is configured through a series of configuration
# options (global ruby variables) which are detailed below. To modify
# these options, first copy this file to "config.rb". Then simply
# uncomment the necessary lines, leaving the $, and replace everything
# after the equals sign..
# Change basename of the VM
# The default value is "core", which results in VMs named starting with
# "core-01" through to "core-${num_instances}".
#$instance_name_prefix="core"
# Official CoreOS channel from which updates should be downloaded
$update_channel='stable'
# Log the serial consoles of CoreOS VMs to log/
# Enable by setting value to true, disable with false
# WARNING: Serial logging is known to result in extremely high CPU usage with
# VirtualBox, so should only be used in debugging situations
#$enable_serial_logging=false
# Enable port forwarding of Docker TCP socket
# Set to the TCP port you want exposed on the *host* machine, default is 2375
# If 2375 is used, Vagrant will auto-increment (e.g. in the case of
$num_instances > 1)
# You can then use the docker tool locally by setting the following env var:
# export DOCKER_HOST='tcp://127.0.0.1:2375'
#$expose_docker_tcp=2375
# Enable NFS sharing of your home directory ($HOME) to CoreOS
# It will be mounted at the same path in the VM as on the host.
# Example: /Users/foobar -> /Users/foobar
#$share_home=false
# Customize VMs
#$vm_gui = false
#$vm_memory = 1024
#$vm_cpus = 1
# Share additional folders to the CoreOS VMs
# For example,
# $shared_folders = {'/path/on/host' => '/path/on/guest', '/home/foo/app' =>
'/app'}
# or, to map host folders to guest folders of the same name,
# $shared_folders = Hash[*['/home/foo/app1', '/home/foo/app2'].map{|d| [d,
d]}.flatten]
#$shared_folders = {}
$shared_folders = {'/home/greg/Dockerfiles/' => '/mnt/Dockerfiles'}
# Enable port forwarding from guest(s) to host machine, syntax is: { 80 => 8080
}, auto correction is enabled by default.
#$forwarded_ports = {}
# -*- mode: ruby -*-
# # vi: set ft=ruby :
require 'fileutils'
Vagrant.require_version ">= 1.6.0"
CLOUD_CONFIG_PATH = File.join(File.dirname(__FILE__), "user-data")
CONFIG = File.join(File.dirname(__FILE__), "config.rb")
# Defaults for config options defined in CONFIG
$num_instances = 1
$instance_name_prefix = "core"
$update_channel = "alpha"
$enable_serial_logging = false
$share_home = false
$vm_gui = false
$vm_memory = 1024
$vm_cpus = 1
$shared_folders = {}
$forwarded_ports = {}
# Attempt to apply the deprecated environment variable NUM_INSTANCES to
# $num_instances while allowing config.rb to override it
if ENV["NUM_INSTANCES"].to_i > 0 && ENV["NUM_INSTANCES"]
$num_instances = ENV["NUM_INSTANCES"].to_i
end
if File.exist?(CONFIG)
require CONFIG
end
# Use old vb_xxx config variables when set
def vm_gui
$vb_gui.nil? ? $vm_gui : $vb_gui
end
def vm_memory
$vb_memory.nil? ? $vm_memory : $vb_memory
end
def vm_cpus
$vb_cpus.nil? ? $vm_cpus : $vb_cpus
end
Vagrant.configure("2") do |config|
# always use Vagrants insecure key
config.ssh.insert_key = false
config.vm.box = "coreos-%s" % $update_channel
config.vm.box_version = ">= 308.0.1"
config.vm.box_url =
"http://%s.release.core-os.net/amd64-usr/current/coreos_production_vagrant.json";
% $update_channel
["vmware_fusion", "vmware_workstation"].each do |vmware|
config.vm.provider vmware do |v, override|
override.vm.box_url =
"http://%s.release.core-os.net/amd64-usr/current/coreos_production_vagrant_vmware_fusion.json";
% $update_channel
end
end
config.vm.provider :virtualbox do |v|
# On VirtualBox, we don't have guest additions or a functional vboxsf
# in CoreOS, so tell Vagrant that so it can be smarter.
v.check_guest_additions = false
v.functional_vboxsf = false
end
# plugin conflict
if Vagrant.has_plugin?("vagrant-vbguest") then
config.vbguest.auto_update = false
end
(1..$num_instances).each do |i|
config.vm.define vm_name = "%s-%02d" % [$instance_name_prefix, i] do
|config|
config.vm.hostname = vm_name
if $enable_serial_logging
logdir = File.join(File.dirname(__FILE__), "log")
FileUtils.mkdir_p(logdir)
serialFile = File.join(logdir, "%s-serial.txt" % vm_name)
FileUtils.touch(serialFile)
["vmware_fusion", "vmware_workstation"].each do |vmware|
config.vm.provider vmware do |v, override|
v.vmx["serial0.present"] = "TRUE"
v.vmx["serial0.fileType"] = "file"
v.vmx["serial0.fileName"] = serialFile
v.vmx["serial0.tryNoRxLoss"] = "FALSE"
end
end
config.vm.provider :virtualbox do |vb, override|
vb.customize ["modifyvm", :id, "--uart1", "0x3F8", "4"]
vb.customize ["modifyvm", :id, "--uartmode1", serialFile]
end
end
if $expose_docker_tcp
config.vm.network "forwarded_port", guest: 2375, host:
($expose_docker_tcp + i - 1), auto_correct: true
end
$forwarded_ports.each do |guest, host|
config.vm.network "forwarded_port", guest: guest, host: host,
auto_correct: true
end
["vmware_fusion", "vmware_workstation"].each do |vmware|
config.vm.provider vmware do |v|
v.gui = vm_gui
v.vmx['memsize'] = vm_memory
v.vmx['numvcpus'] = vm_cpus
end
end
config.vm.provider :virtualbox do |vb|
vb.gui = vm_gui
vb.memory = vm_memory
vb.cpus = vm_cpus
end
ip = "172.17.8.#{i+100}"
config.vm.network :private_network, ip: ip
# Uncomment below to enable NFS for sharing the host machine into the
coreos-vagrant VM.
#config.vm.synced_folder ".", "/home/core/share", id: "core", :nfs =>
true, :mount_options => ['nolock,vers=3,udp']
$shared_folders.each_with_index do |(host_folder, guest_folder), index|
config.vm.synced_folder host_folder.to_s, guest_folder.to_s, id:
"core-share%02d" % index, nfs: true, mount_options: ['nolock,vers=3,udp']
end
if $share_home
config.vm.synced_folder ENV['HOME'], ENV['HOME'], id: "home", :nfs =>
true, :mount_options => ['nolock,vers=3,udp']
end
if File.exist?(CLOUD_CONFIG_PATH)
config.vm.provision :file, :source => "#{CLOUD_CONFIG_PATH}",
:destination => "/tmp/vagrantfile-user-data"
config.vm.provision :shell, :inline => "mv /tmp/vagrantfile-user-data
/var/lib/coreos-vagrant/", :privileged => true
end
end
end
end
