Juju installation (release 0)

VM creation

• Juju Server and Client (single VM)
  • Minimum Requirements:
    • 4 vCPU
    • 4GB RAM
    • 40GB disk
• Base image: ubuntu-14.04.4-server-amd64

In case you want to install them in separate VMs, the minimum requirements are:

• Juju Server:
  • 4 vCPU
  • 4GB RAM
  • 40GB disk
• Juju Client:
  • 2 vCPU
  • 2GB RAM
  • 20GB disk
• Base image in both cases: ubuntu-14.04.4-server-amd64

Installing required packages and libraries

Install Juju Server

• Create a user (e.g. user osm, pwd osm) and add it to the sudo group.

sudo adduser osm
usermod -a -G sudo osm

• Install packages for Juju Server

sudo apt-get install systemd-services lxc

• If required, edit the file /etc/default/lxc-net to change the lxc network addressing. This is only needed if there is overlapping with other network interfaces used by the Juju Server.

For instance, in order to use the subnet 10.0.3.0/24, you could make the following configuration:

LXC_BRIDGE="lxcbr0" 
LXC_ADDR="10.0.3.1"
LXC_NETMASK="255.255.255.0"
LXC_NETWORK="10.0.3.0/24"
LXC_DHCP_RANGE="10.0.3.2,10.0.3.254"
LXC_DHCP_MAX="253"

Install Juju Client

• Install packages for Juju Client

sudo add-apt-repository ppa:juju/stable
sudo apt-get update
sudo apt-get install juju juju-local juju-quickstart charm-tools squid-deb-proxy

Configuration

• In the Juju client, edit /etc/squid-deb-proxy/mirror-dstdomain.acl to add the following lines:

# launchpad personal package archives (disabled by default)
ppa.launchpad.net
private-ppa.launchpad.net

• In the Juju client, restart squid-deb-proxy

sudo service squid-deb-proxy restart

• In the Juju client, create file .juju/environments.yaml using the appropriate IP address for the bootstrap host (Juju server's IP address) and for the squid proxy (either the IP address of the LXC bridge - 10.0.3.1 - in case of a single-VM installation, or the IP address of the Juju client in case server and client are running in different VMs).

default: osm0-manual
environments:
  osm0-manual:
    admin-secret: osm
    bootstrap-host: <jujuserver-ip>
    bootstrap-user: osm
    default-series: trusty
    type: manual
    enable-os-refresh-update: False
    enable-os-upgrade: False
    apt-http-proxy: http://<proxy-ip>:8000
    apt-https-proxy: http://<proxy-ip>:8000

• From Juju client, bootstrap the environment:

juju bootstrap -v     # -v so you can see what's going on

• From Juju client, test the environment deploying juju-gui:

juju deploy juju-gui --to 0

• Access juju-gui through the web browser (https://<jujuserver-ip>)
• Additional commands:

juju debug-log        # open this in another terminal or tab, so you can see what juju is doing while you type other commands
juju status           # provides the status. When no charms have been launched, you should see an output like below:
 environment: osm0-manual
 machines:
   "0":
     agent-state: started
     agent-version: 1.25.5
     dns-name: 10.11.12.13
     instance-id: 'manual:'
     series: trusty
     hardware: arch=amd64 cpu-cores=4 mem=3953M
     state-server-member-status: has-vote
 services: {}
juju status --format=tabular
[Services]
NAME       STATUS  EXPOSED CHARM
juju-gui   unknown false   cs:trusty/juju-gui-54

[Units]
ID         WORKLOAD-STATE AGENT-STATE VERSION MACHINE PORTS          PUBLIC-ADDRESS MESSAGE
juju-gui/0 unknown        idle        1.25.5  0       80/tcp,443/tcp 10.11.12.13

[Machines]
ID         STATE   VERSION DNS          INS-ID  SERIES HARDWARE
0          started 1.25.5  10.11.12.13  manual: trusty arch=amd64 cpu-cores=4 mem=3953M

• More about using juju: https://github.com/juju/cheatsheet