123 lines
3.7 KiB
Bash
Executable File
123 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# **exercise.sh** - using the cloud can be fun
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# we will use the ``nova`` cli tool provided by the ``python-novaclient``
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# package
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#
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# This script exits on an error so that errors don't compound and you see
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# only the first error that occured.
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set -o errexit
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# Print the commands being run so that we can see the command that triggers
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# an error. It is also useful for following allowing as the install occurs.
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set -o xtrace
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# Settings
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# ========
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HOST=${HOST:-localhost}
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# Nova original used project_id as the *account* that owned resources (servers,
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# ip address, ...) With the addition of Keystone we have standardized on the
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# term **tenant** as the entity that owns the resources. **novaclient** still
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# uses the old deprecated terms project_id. Note that this field should now be
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# set to tenant_name, not tenant_id.
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export NOVA_PROJECT_ID=${TENANT:-demo}
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# In addition to the owning entity (tenant), nova stores the entity performing
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# the action as the **user**.
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export NOVA_USERNAME=${USERNAME:-demo}
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# With Keystone you pass the keystone password instead of an api key.
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export NOVA_API_KEY=${PASSWORD:-secrete}
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# With the addition of Keystone, to use an openstack cloud you should
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# authenticate against keystone, which returns a **Token** and **Service
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# Catalog**. The catalog contains the endpoint for all services the user/tenant
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# has access to - including nova, glance, keystone, swift, ... We currently
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# recommend using the 2.0 *auth api*.
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#
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# *NOTE*: Using the 2.0 *auth api* does mean that compute api is 2.0. We will
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# use the 1.1 *compute api*
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export NOVA_URL=${NOVA_URL:-http://$HOST:5000/v2.0/}
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# Currently novaclient needs you to specify the *compute api* version. This
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# needs to match the config of your catalog returned by Keystone.
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export NOVA_VERSION=1.1
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# FIXME - why does this need to be specified?
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export NOVA_REGION_NAME=RegionOne
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# set log level to DEBUG (helps debug issues)
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export NOVACLIENT_DEBUG=1
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# Get a token for clients that don't support service catalog
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# ==========================================================
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# manually create a token by querying keystone (sending JSON data). Keystone
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# returns a token and catalog of endpoints. We use python to parse the token
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# and save it.
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TOKEN=`curl -s -d "{\"auth\":{\"passwordCredentials\": {\"username\": \"$NOVA_USERNAME\", \"password\": \"$NOVA_API_KEY\"}}}" -H "Content-type: application/json" http://$HOST:5000/v2.0/tokens | python -c "import sys; import json; tok = json.loads(sys.stdin.read()); print tok['access']['token']['id'];"`
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# Launching a server
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# ==================
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# List servers for tenant:
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nova list
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# Images
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# ------
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# Nova has a **deprecated** way of listing images.
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nova image-list
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# But we recommend using glance directly
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glance -A $TOKEN index
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# Let's grab the id of the first AMI image to launch
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IMAGE=`glance -A $TOKEN index | egrep ami | cut -d" " -f1`
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# Flavors
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# -------
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# List of flavors:
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nova flavor-list
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# and grab the first flavor in the list to launch
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FLAVOR=`nova flavor-list | head -n 4 | tail -n 1 | cut -d"|" -f2`
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NAME="firstpost"
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nova boot --flavor $FLAVOR --image $IMAGE $NAME
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# let's give it 10 seconds to launch
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sleep 10
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# check that the status is active
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nova show $NAME | grep status | grep -q ACTIVE
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# get the IP of the server
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IP=`nova show $NAME | grep "private network" | cut -d"|" -f3`
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# ping it once (timeout of a second)
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ping -c1 -w1 $IP || true
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# sometimes the first ping fails (10 seconds isn't enough time for the VM's
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# network to respond?), so let's wait 5 seconds and really test ping
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sleep 5
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ping -c1 -w1 $IP
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# shutdown the server
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nova delete $NAME
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# FIXME: validate shutdown within 5 seconds
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# (nova show $NAME returns 1 or status != ACTIVE)?
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