159 lines
3.9 KiB
Bash
Executable file
159 lines
3.9 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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# Use openrc + stackrc + localrc for settings
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source ./openrc
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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_IP: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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# Security Groups
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# ---------------
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SECGROUP=test_secgroup
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# List of secgroups:
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nova secgroup-list
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# Create a secgroup
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nova secgroup-create $SECGROUP "test_secgroup description"
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# determine flavor
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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="myserver"
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nova boot --flavor $FLAVOR --image $IMAGE $NAME --security_groups=$SECGROUP
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# Testing
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# =======
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# First check if it spins up (becomes active and responds to ping on
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# internal ip). If you run this script from a nova node, you should
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# bypass security groups and have direct access to the server.
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# Waiting for boot
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# ----------------
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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 $NAME | grep "private network" | cut -d"|" -f3`
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# for single node deployments, we can ping private ips
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MULTI_HOST=${MULTI_HOST:-0}
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if [ "$MULTI_HOST" = "0" ]; then
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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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fi
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# Security Groups & Floating IPs
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# ------------------------------
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# allow icmp traffic (ping)
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nova secgroup-add-rule $SECGROUP icmp -1 -1 0.0.0.0/0
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# List rules for a secgroup
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nova secgroup-list-rules $SECGROUP
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# allocate a floating ip
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nova floating-ip-create
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# store floating address
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FLOATING_IP=`nova floating-ip-list | grep None | head -1 | cut -d '|' -f2 | sed 's/ //g'`
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# add floating ip to our server
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nova add-floating-ip $NAME $FLOATING_IP
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# sleep for a smidge
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sleep 5
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# ping our floating ip
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ping -c1 -w1 $FLOATING_IP
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# dis-allow icmp traffic (ping)
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nova secgroup-delete-rule $SECGROUP icmp -1 -1 0.0.0.0/0
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# sleep for a smidge
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sleep 5
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# ping our floating ip
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if ( ping -c1 -w1 $FLOATING_IP ); then
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print "Security group failure - ping should not be allowed!"
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exit 1
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fi
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# de-allocate the floating ip
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nova floating-ip-delete $FLOATING_IP
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# shutdown the server
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nova delete $NAME
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# Delete a secgroup
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nova secgroup-delete $SECGROUP
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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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# Testing Euca2ools
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# ==================
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# make sure that we can describe instances
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euca-describe-instances
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