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openstack_vm.py
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openstack_vm.py
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# -*- coding: utf-8 -*-
"""
Created on Wed May 14 15:07:06 2014
@author: konstantin
"""
#!/usr/bin/env python
import os as current
import struct
import sys
import time
import subprocess
import os.path
from multiprocessing import Process, Pool
import keystoneclient.v2_0.client as ksclient
from novaclient import client as novaclient
from credentials import set_creds, get_nova_creds
from fabric.api import *
##from netaddr import *
# TODO: put credentials in encrypted file
def get_openstack_clients(username="your_openstack_username",
password="your_openstack_password",
auth_url="http://<your_openstack_url>:35357/v2.0",
tenant="your_openstack_tenantname"):
set_creds(username=username,
password=password,
auth_url=auth_url,
tenant=tenant,
current_os=current)
nova_creds = get_nova_creds(current_os=current)
nova = novaclient.Client("1.1", **nova_creds)
return nova
def create_keypairs(nova,
keypair_name='mykey',
keyfile_path='id_rsa.pub'):
print('Generating keypairs: %s' % keypair_name)
if not nova.keypairs.findall(name=keypair_name):
with open(current.path.expanduser(str(keyfile_path))) as fpubkey:
print('Generating...')
nova.keypairs.create(name=keypair_name,
public_key=fpubkey.read())
mykey=nova.keypairs.find(name=keypair_name)
print('Generated keypair: %s' % mykey)
return mykey
def create_sec_rules(nova):
print('Creating security group rules')
secgroup = nova.security_groups.find(name='default')
if not secgroup.rules:
print('Does not exist')
nova.security_group_rules.create(secgroup.id,
ip_protocol="tcp",
from_port=22,
to_port=22)
nova.security_group_rules.create(secgroup.id,
ip_protocol="icmp",
from_port=-1,
to_port=-1)
"""
Creates a group of VM test instances
"""
def create_instance_group(nova,
mykey="mykey",
image_name="Sizing_Test_Instance",
flavor_name="m1.large",
num_vms=10):
image = nova.images.find(name=image_name)
flavor = nova.flavors.find(name=flavor_name)
vm_list = []
for x in range(1,num_vms+1):
instance_name = str('load_vm%s' % x)
try:
instance = nova.servers.find(name=instance_name)
print("Instance already exists.")
except:
instance = nova.servers.create(name=instance_name,
image=image,
flavor=flavor,
key_name=mykey)
status = instance.status
trials = 0
# Start new VM and repeatedly poll if VM is started. Exit in case of error.
while status != 'ACTIVE':
if status == 'ACTIVE':
break
if status == 'ERROR' or status == 'SHUTOFF':
instance.delete()
if trials < 3:
instance = nova.servers.create(name=instance_name,
image=image,
flavor=flavor,
key_name=mykey,
)
time.sleep(5)
trials +=1
print("BUILD ERROR occurred. Recovery trial: %s" % trials)
else:
time.sleep(5)
break
time.sleep(5)
print("Building instance: %s" % instance.id)
print("status: %s" % status)
# Retrieve the instance again so the status field updates
instance = nova.servers.get(instance.id)
status = instance.status
else:
vm_list.append(instance)
print(vm_list)
return vm_list
def assign_floating_ips_to_instance_group(vm_list,nova):
floating_ips_list = []
for instance in vm_list:
if not nova.floating_ips.findall(instance_id=instance.id):
floating_ip = nova.floating_ips.create()
instance.add_floating_ip(floating_ip)
time.sleep(1)
floating_ip = nova.floating_ips.find(instance_id=instance.id)
print("Created Floating IP: %s for instance %s" % (floating_ip.ip,
floating_ip.instance_id))
else:
floating_ip = nova.floating_ips.find(instance_id=instance.id)
instance.add_floating_ip(floating_ip)
time.sleep(1)
floating_ip = nova.floating_ips.find(instance_id=instance.id)
print("Existing Floating IP: %s for instance %s" % (floating_ip.ip,
floating_ip.instance_id))
if floating_ip.instance_id != None:
floating_ips_list.append(floating_ip)
print(floating_ips_list)
return floating_ips_list
def reassign_floating_ip_to_instance(instance, nova):
if nova.floating.ips.findall(instance_id=instance.id):
floating_ip = nova.floating_ips.find(instance_id=instance.id)
else:
floating_ip = nova.floating_ips.create()
instance.remove_floating_ip(floating_ip)
print("Removed Floating IP: %s" % floating_ip.ip)
instance.add_floating_ip(floating_ip)
print("Added Floating IP: %s" % floating_ip.ip)
def print_sorted_ips(floating_ips_list):
float_ips = {}
for float_ip in floating_ips_list:
D = {str(float_ip.ip): str(float_ip)}
float_ips.update(D)
return float_ips
##secgroup = nova.security_groups.find(name="default")
def delete_all_floating_ips(nova):
for ip in nova.floating_ips.findall():
print('Deleting ip %s' % ip)
try:
ip.delete()
print('Deleted ip %s' % ip)
except Exception as e:
print "Error({0}): {1}".format(e.errno, e.strerror)
def delete_all_instances(nova):
for instance in nova.servers.findall():
status = instance.status
if status == 'ACTIVE':
instance.stop()
print("Stopping instance '%s' with id: %s" %
(instance.name, instance.id))
while status == 'ACTIVE':
print(instance.status)
time.sleep(5)
instance = nova.servers.get(instance.id)
status = instance.status
print('Deleting instance %s' % instance.id)
try:
instance.delete()
except Exception as e:
## print "Error({0}): {1}".format(e.errno, e.strerror)
pass
"""
Create a hosts file that stores IPs of all test VMs that were created.
"""
def create_hosts_file(float_ips,filename='hosts'):
hostfile = open(filename,'w')
hostfile.write('')
hostfile.close()
hostfile = open(filename,'w')
print(type(float_ips))
print(type([]))
print(type({}))
if type(float_ips)==type({}):
print 'bla'
for item in float_ips.keys():
hostfile.write(item+'\n');print(item)
if type(float_ips)==type([]):
for item in float_ips:
hostfile.write(item+'\n');print(item)
hostfile.close()
"""
Helper method to run remote tasks on test VMs.
"""
def run_fab_task(task, fabfile='fabfile.py'):
task = "fab -f "+ fabfile +" " + task
print('running task'+task)
message = subprocess.Popen(task, shell=True, stdout=subprocess.PIPE)
print('1')
output = message.stdout.read()
print('2')
message.stdout.close()
message.wait()
print(output)
"""
Helper method to run remote tasks on test VMs which accepts 2
arguments, remote and local path.
"""
def run_fab_taski(task, localpath, remotepath, fabfile='fabfile.py'):
task = str("fab -f %s %s:%s,%s" % (fabfile, task, localpath, remotepath))
print('running task'+task)
message = subprocess.Popen(task, shell=True, stdout=subprocess.PIPE)
print('1')
output = message.stdout.read()
print('2')
message.stdout.close()
message.wait()
print(output)
def get_fixed_ips(vm_list, nova):
fixed_ips_list = []
for instance in vm_list:
fixed_ip = nova.fixed_ips.get(instance.addresses[u'novanetwork'][0][u'addr'])
print("Existing fixed IP: %s for instance %s" % (str(fixed_ip.address),
str(fixed_ip.to_dict()[u'hostname'])))
fixed_ips_list.append(str(fixed_ip.address))
print(fixed_ips_list)
return fixed_ips_list
def set_up(num_vms=10,flavor_name="m1.large"):
nova = get_openstack_clients()
print(nova.keypairs.list())
print(current)
mykey = create_keypairs(nova)
create_sec_rules(nova)
print(mykey)
vm_list = create_instance_group(nova,num_vms=num_vms,flavor_name=flavor_name)
print(vm_list)
float_ips = assign_floating_ips_to_instance_group(vm_list, nova)
## float_ips = print_sorted_ips(float_ips)
create_hosts_file(float_ips)
return float_ips, nova
def configure(float_ips):
float_ips=[str(line).rstrip() for line in open('hosts').readlines()]
print(float_ips)
run_fab_task('ssh_config')
## run_fab_task('install_sshpass')
## run_fab_task('install_pip')
## run_fab_task('update')
## run_fab_task('install_dev')
## run_fab_task('install_python_pckg')
run_fab_task('assign_hostname')
run_fab_taski('file_send', 'pi_compute.py', 'pi_compute.py')
run_fab_taski('file_send', 'token', 'token')
def get_free_fixed_ips(nova, ips):
return [str(ip) for ip in ips if not nova.floating_ips.findall(fixed_ip=str(ip))]
def is_fixed_ip_free(nova, ip):
return (not nova.floating_ips.findall(fixed_ip=str(ip)))
def get_remote_logs(float_ips, logname='log.csv'):
run_fab_task('get_log')
try:
if os.path.isfile(logname) == False:
consolidated_log = open(logname,'w')
consolidated_log.write('Instance,TimeStamp,Duration,CPU.Usage,Memory.Usage,Bytes.Sent,Bytes.Recv\n')
else:
print("File exists in %s: %s"%(logname,float_ips))
consolidated_log = open(logname,'a')
for ip in float_ips:
[consolidated_log.write(str(line).rstrip()+'\n') for line in open(str('%s.log.txt' % ip)).readlines() if os.path.isfile(str('%s.log.txt' % ip))]
consolidated_log.close()
except Exception as e:
print "Error({0}): {1}".format(e.errno, e.strerror)
def run(num_vms,flavor_name="m1.large"):
float_ips,nova=set_up(num_vms=num_vms,flavor_name=flavor_name)
float_ips=[str(line).rstrip() for line in open('hosts').readlines()]
configure(float_ips)
return nova,float_ips
def collect_data(float_ips,task='compute_pi',logfile='log.csv'):
run_fab_task(task)
get_remote_logs(float_ips,logfile)
def clear(nova):
delete_all_instances(nova)
delete_all_floating_ips(nova)
def main():
float_ips,nova=set_up(num_vms=15,flavor_name="m1.large")
float_ips=[str(line).rstrip() for line in open('hosts').readlines()]
configure(float_ips)
run_fab_task('broadcast_file')
get_remote_logs(float_ips)
return nova,float_ips
if __name__ =='__main__':
nova,float_ips=main()