juju入门

#sudo add-apt-repository ppa:juju/stable  (我们使用1.25)
#sudo apt-get update && sudo apt-get install juju-core

linux目录下有个配置文件;
    ~/.juju/environments.yaml

#juju generate-config

# This is the Juju config file, which you can use to specify multiple
# environments in which to deploy. See https://juju.ubuntu.com/docs
# for more information

# An environment configuration must always specify at least the
# following information:
# - name (to identify the environment)
# - type (to specify the provider)
# In the following example the name is "myenv" and type is "ec2".
# myenv:
# type: ec2

# Values in <brackets> below need to be filled in by the user.
# Optional attributes are shown commented out, with
# a sample value or a value in <brackets>.

# There are several settings supported by all environments, all of which
# are optional and have specified default values. For more info, see the
# Juju documentation.

# The default environment is chosen when an environment is not
# specified using any of the following, in descending order of precedence:
# 1. -e or --environment command line parameter, passed after the command, e.g.
# $ juju add-unit -e myenv myservice
# 2. By setting JUJU_ENV environment variable.
# 3. Using the juju switch command like this:
# $ juju switch myenv
#

# You can control how Juju harvests machines by using the
# provisioner-harvest-mode setting. Harvesting is a process wherein
# Juju attempts to reclaim unused machines.
#
# Options are:
#
# Don't harvest any machines.
# provisioner-harvest-mode: none
#
# Only harvest machines that Juju knows about and are dead.
# provisioner-harvest-mode: destroyed
#
# Only harvest machines that Juju doesn't know about.
# provisioner-harvest-mode: unknown
#
# Harvest both dead and unknown machines.
# provisioner-harvest-mode: all

default: amazon

environments:
# https://juju.ubuntu.com/docs/config-local.html
local:
type: local

# root-dir holds the directory that is used for the storage files and
# database. The default location is $JUJU_HOME/<env-name>.
# $JUJU_HOME defaults to ~/.juju. Override if needed.
#
# root-dir: ~/.juju/local

# storage-port holds the port where the local provider starts the
# HTTP file server. Override the value if you have multiple local
# providers, or if the default port is used by another program.
#
# storage-port: 8040

# network-bridge holds the name of the LXC network bridge to use.
# Override if the default LXC network bridge is different.
#
#
# network-bridge: lxcbr0

# The default series to deploy the state-server and charms on.
# Make sure to uncomment the following option and set the value to
# precise or trusty as desired.
#
# default-series: trusty

# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of true is recommended for use
# in production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-upgrade: true

gce:
type: gce

# Google Auth Info
# The GCE provider uses OAuth to authenticate. This requires that
# you set it up and get the relevant credentials. For more information
# see https://cloud.google.com/compute/docs/api/how-tos/authorization.
# The key information can be downloaded as a JSON file, or copied, from:
# https://console.developers.google.com/project/<projet>/apiui/credential
# Either set the path to the downloaded JSON file here:
auth-file:

# ...or set the individual fields for the credentials. Either way, all
# three of these are required and have specific meaning to GCE.
# private-key:
# client-email:
# client-id:

# Google instance info
# To provision instances and perform related operations, the provider
# will need to know which GCE project to use and into which region to
# provision. While the region has a default, the project ID is
# required. For information on the project ID, see
# https://cloud.google.com/compute/docs/projects and regarding regions
# see https://cloud.google.com/compute/docs/zones.
project-id:
# region: us-central1

# The GCE provider uses pre-built images when provisioning instances.
# You can customize the location in which to find them with the
# image-endpoint setting. The default value is the a location within
# GCE, so it will give you the best speed when bootstrapping or adding
# machines. For more information on the image cache see
# https://cloud-images.ubuntu.com/.
# image-endpoint: https://www.googleapis.com
joyent:
type: joyent

# SDC config
# Can be set via env variables, or specified here
# sdc-user: <secret>
# Can be set via env variables, or specified here
# sdc-key-id: <secret>
# url defaults to us-west-1 DC, override if required
# sdc-url: https://us-west-1.api.joyentcloud.com

# Manta config
# Can be set via env variables, or specified here
# manta-user: <secret>
# Can be set via env variables, or specified here
# manta-key-id: <secret>
# url defaults to us-east DC, override if required
# manta-url: https://us-east.manta.joyent.com

# Auth config
# private-key-path is the private key used to sign Joyent requests.
# Alternatively, you can supply "private-key" with the content of the private
# key instead supplying the path to a file.
# private-key-path: ~/.ssh/foo_id
# algorithm defaults to rsa-sha256, override if required
# algorithm: rsa-sha256

# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of true is recommended for use
# in production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-upgrade: true

# https://juju.ubuntu.com/docs/config-maas.html
maas:
type: maas

# maas-server specifies the location of the MAAS server. It must
# specify the base path.
#
maas-server: 'http://192.168.1.1/MAAS/'

# maas-oauth holds the OAuth credentials from MAAS.
#
maas-oauth: '<add your OAuth credentials from MAAS here>'

# maas-server bootstrap ssh connection options
#

# bootstrap-timeout time to wait contacting a state server, in seconds.
bootstrap-timeout: 1800

# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of true is recommended for use
# in production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-upgrade: true

manual:
type: manual
# bootstrap-host holds the host name of the machine where the
# bootstrap machine agent will be started.
bootstrap-host: somehost.example.com

# bootstrap-user specifies the user to authenticate as when
# connecting to the bootstrap machine. It defaults to
# the current user.
# bootstrap-user: joebloggs

# storage-listen-ip specifies the IP address that the
# bootstrap machine's Juju storage server will listen
# on. By default, storage will be served on all
# network interfaces.
# storage-listen-ip:

# storage-port specifes the TCP port that the
# bootstrap machine's Juju storage server will listen
# on. It defaults to 8040
# storage-port: 8040
# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of false is set so that Juju
# does not subsume any other way the system might be
# maintained.
#
# enable-os-upgrade: false

vmware:
type: vsphere

# IP address or DNS name of vsphere API host.
host:

# Vsphere API user credentials.
user:
password:

# Name of vsphere datacenter.
datacenter:

# Name of the network, that all created vms will use ot obtain public ip address.
# This network should have ip pool configured or DHCP server connected to it.
# This parameter is optional.
extenal-network:
# https://juju.ubuntu.com/docs/config-azure.html
azure:
type: azure

# location specifies the place where instances will be started,
# for example: West US, North Europe.
#
location: West US

# The following attributes specify Windows Azure Management
# information. See:
# http://msdn.microsoft.com/en-us/library/windowsazure
# for details.
#
management-subscription-id: 00000000-0000-0000-0000-000000000000
management-certificate-path: /home/me/azure.pem

# storage-account-name holds Windows Azure Storage info.
#
storage-account-name: abcdefghijkl

# force-image-name overrides the OS image selection to use a fixed
# image for all deployments. Most useful for developers.
#
# force-image-name: b39f27a8b8c64d52b05eac6a62ebad85__Ubuntu-13_10-amd64-server-DEVELOPMENT-20130713-Juju_ALPHA-en-us-30GB

# image-stream chooses a simplestreams stream from which to select
# OS images, for example daily or released images (or any other stream
# available on simplestreams).
#
# image-stream: "released"

# agent-stream chooses a simplestreams stream from which to select tools,
# for example released or proposed tools (or any other stream available
# on simplestreams).
#
# agent-stream: "released"

# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of true is recommended for use
# in production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-upgrade: true

# https://juju.ubuntu.com/docs/config-cloudsigma.html
cloudsigma:
type: cloudsigma

# region holds the cloudsigma region (zrh, lvs, ...).
#
# region: <your region>

# credentials for CloudSigma account
#
# username: <your username>
# password: <secret>
# https://juju.ubuntu.com/docs/config-aws.html
amazon:
type: ec2

# region specifies the EC2 region. It defaults to us-east-1.
#
# region: us-east-1

# access-key holds the EC2 access key. It defaults to the
# environment variable AWS_ACCESS_KEY_ID.
#
# access-key: <secret>

# secret-key holds the EC2 secret key. It defaults to the
# environment variable AWS_SECRET_ACCESS_KEY.
#
# secret-key: <secret>

# image-stream chooses a simplestreams stream from which to select
# OS images, for example daily or released images (or any other stream
# available on simplestreams).
#
# image-stream: "released"

# agent-stream chooses a simplestreams stream from which to select tools,
# for example released or proposed tools (or any other stream available
# on simplestreams).
#
# agent-stream: "released"

# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of true is recommended for use
# in production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-upgrade: true

# https://juju.ubuntu.com/docs/config-openstack.html
openstack:
type: openstack

# use-floating-ip specifies whether a floating IP address is
# required to give the nodes a public IP address. Some
# installations assign public IP addresses by default without
# requiring a floating IP address.
#
# use-floating-ip: false

# use-default-secgroup specifies whether new machine instances
# should have the "default" Openstack security group assigned.
#
# use-default-secgroup: false

# network specifies the network label or uuid to bring machines up
# on, in the case where multiple networks exist. It may be omitted
# otherwise.
#
# network: <your network label or uuid>

# agent-metadata-url specifies the location of the Juju tools and
# metadata. It defaults to the global public tools metadata
# location https://streams.canonical.com/tools.
#
# agent-metadata-url: https://your-agent-metadata-url

# image-metadata-url specifies the location of Ubuntu cloud image
# metadata. It defaults to the global public image metadata
# location https://cloud-images.ubuntu.com/releases.
#
# image-metadata-url: https://your-image-metadata-url

# image-stream chooses a simplestreams stream from which to select
# OS images, for example daily or released images (or any other stream
# available on simplestreams).
#
# image-stream: "released"

# agent-stream chooses a simplestreams stream from which to select tools,
# for example released or proposed tools (or any other stream available
# on simplestreams).
#
# agent-stream: "released"

# auth-url defaults to the value of the environment variable
# OS_AUTH_URL, but can be specified here.
#
# auth-url: https://yourkeystoneurl:443/v2.0/

# tenant-name holds the openstack tenant name. It defaults to the
# environment variable OS_TENANT_NAME.
#
# tenant-name: <your tenant name>

# region holds the openstack region. It defaults to the
# environment variable OS_REGION_NAME.
#
# region: <your region>

# The auth-mode, username and password attributes are used for
# userpass authentication (the default).
#
# auth-mode holds the authentication mode. For user-password
# authentication, auth-mode should be "userpass" and username and
# password should be set appropriately; they default to the
# environment variables OS_USERNAME and OS_PASSWORD respectively.
#
# auth-mode: userpass
# username: <your username>
# password: <secret>

# For key-pair authentication, auth-mode should be "keypair" and
# access-key and secret-key should be set appropriately; they
# default to the environment variables OS_ACCESS_KEY and
# OS_SECRET_KEY respectively.
#
# auth-mode: keypair
# access-key: <secret>
# secret-key: <secret>

# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of true is recommended for use
# in production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-upgrade: true

# https://juju.ubuntu.com/docs/config-hpcloud.html
hpcloud:
type: openstack

# use-floating-ip specifies whether a floating IP address is
# required to give the nodes a public IP address. Some
# installations assign public IP addresses by default without
# requiring a floating IP address.
#
# use-floating-ip: true

# use-default-secgroup specifies whether new machine instances
# should have the "default" Openstack security group assigned.
#
# use-default-secgroup: false

# tenant-name holds the openstack tenant name. In HPCloud, this is
# synonymous with the project-name It defaults to the environment
# variable OS_TENANT_NAME.
#
# tenant-name: <your tenant name>

# image-stream chooses a simplestreams stream from which to select
# OS images, for example daily or released images (or any other stream
# available on simplestreams).
#
# image-stream: "released"

# agent-stream chooses a simplestreams stream from which to select tools,
# for example released or proposed tools (or any other stream available
# on simplestreams).
#
# agent-stream: "released"

# auth-url holds the keystone url for authentication. It defaults
# to the value of the environment variable OS_AUTH_URL.
#
# auth-url: https://region-a.geo-1.identity.hpcloudsvc.com:35357/v2.0/

# region holds the cloud region (e.g. region-a.geo-1). It
# defaults to the environment variable OS_REGION_NAME.
#
# region: <your region>

# auth-mode holds the authentication mode. For user-password
# authentication, auth-mode should be "userpass" and username and
# password should be set appropriately; they default to the
# environment variables OS_USERNAME and OS_PASSWORD respectively.
#
# auth-mode: userpass
# username: <your_username>
# password: <your_password>

# For key-pair authentication, auth-mode should be "keypair" and
# access-key and secret-key should be set appropriately; they
# default to the environment variables OS_ACCESS_KEY and
# OS_SECRET_KEY respectively.
#
# auth-mode: keypair
# access-key: <secret>
# secret-key: <secret>

# Whether or not to refresh the list of available updates for an
# OS. The default option of true is recommended for use in
# production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-refresh-update: true

# Whether or not to perform OS upgrades when machines are
# provisioned. The default option of true is recommended for use
# in production systems, but disabling this can speed up local
# deployments for development or testing.
#
# enable-os-upgrade: true

#juju bootstrap（注意这里要跟一个集群）

Installation（Ubuntu）

Configuring