def initiate():
# Boot first machines if not active:
stack = openstack()
backends = stack.backends()
# Gathering first data
data = {}
data['acu'] = hastats.get_backend_cum_requests()['stot']
data['diff'] = 0
data['diffpt'] = 0
data['date'] = datetime.datetime.now()
data['active'] = len(
stack.active_backends()) #len(hastats.get_backends_up())
data['haactive'] = len(hastats.get_backends_up())
data['needed'] = None
data['epoch'] = (datetime.datetime.now() - epoch_start).seconds
metrics.append(data)
print metrics
time.sleep(sleeptime)
last = data
data = {}
data['acu'] = hastats.get_backend_cum_requests()['stot']
data['diff'] = int(
(float(data['acu']) - float(last['acu'])) / float(sleeptime))
data['diffpt'] = data['diff'] * sleeptime
data['date'] = datetime.datetime.now()
data['needed'] = needed_servers(acu=data['acu'], diff=data['diff'])
data['active'] = len(
stack.active_backends()) #len(hastats.get_backends_up())
data['haactive'] = len(hastats.get_backends_up())
data['epoch'] = (datetime.datetime.now() - epoch_start).seconds
metrics.append(data)
time.sleep(sleeptime)
def initiate():
# Boot first machines if not active:
stack = openstack()
backends = stack.backends()
# Gathering first data
data = {}
data['acu'] = hastats.get_backend_cum_requests()['stot']
data['diff'] = 0
data['diffpt'] = 0
data['date'] = datetime.datetime.now()
data['active'] = len(stack.active_backends())#len(hastats.get_backends_up())
data['haactive'] = len(hastats.get_backends_up())
data['needed'] = None
data['epoch'] = (datetime.datetime.now()-epoch_start).seconds
metrics.append(data)
print metrics
time.sleep(sleeptime)
last = data
data = {}
data['acu'] = hastats.get_backend_cum_requests()['stot']
data['diff'] = int((float(data['acu']) - float(last['acu'])) / float(sleeptime))
data['diffpt'] = data['diff'] * sleeptime
data['date'] = datetime.datetime.now()
data['needed'] = needed_servers(acu=data['acu'], diff=data['diff'])
data['active'] = len(stack.active_backends())#len(hastats.get_backends_up())
data['haactive'] = len(hastats.get_backends_up())
data['epoch'] = (datetime.datetime.now()-epoch_start).seconds
metrics.append(data)
time.sleep(sleeptime)
def main():
# Starting the first time
# getting current cum connections
try:
if not metrics:
print("Gathering initial data...")
# Gathering first data
initiate()
while True:
current = new_metrics(hastats.get_backend_cum_requests()['stot'])
print metrics[-1]
print "Needed servers: %s" % str(
needed_servers(diff=current['diff']))
# What to do? Scale up/down or are we happy?
stack = openstack()
active_backends = stack.active_backends()
up_backends = hastats.get_backends_up()
needed = needed_servers(diff=current['diff'])
if needed > len(active_backends):
print "Scaling up"
scale_up(needed - len(active_backends))
elif needed < len(active_backends):
print "Scaling down"
if not scale_down(Needed=needed):
print "Lowest number"
else:
# Sleeping
print "Sleeping one more round"
if update_conf():
print "HAproxy config reloaded"
print ha_last_reload
for line in hastats.get_stat_backends():
print line['svname'] + ', ' + line['status']
time.sleep(sleeptime)
except KeyboardInterrupt:
write_data()
def main():
# Starting the first time
# getting current cum connections
try:
if not metrics:
print("Gathering initial data...")
# Gathering first data
initiate()
while True:
current = new_metrics(hastats.get_backend_cum_requests()['stot'])
print metrics[-1]
print "Needed servers: %s" % str(needed_servers(diff=current['diff']))
# What to do? Scale up/down or are we happy?
stack = openstack()
active_backends = stack.active_backends()
up_backends = hastats.get_backends_up()
needed = needed_servers(diff=current['diff'])
if needed > len(active_backends):
print "Scaling up"
scale_up(needed-len(active_backends))
elif needed < len(active_backends):
print "Scaling down"
if not scale_down(Needed=needed):
print "Lowest number"
else:
# Sleeping
print "Sleeping one more round"
if update_conf():
print "HAproxy config reloaded"
print ha_last_reload
for line in hastats.get_stat_backends():
print line['svname'] + ', ' + line['status']
time.sleep(sleeptime)
except KeyboardInterrupt:
write_data()
def new_metrics(current_cumulated, hareset=False):
global ha_reloaded
global ha_last_reload
current = {}
current['acu'] = current_cumulated
current['date'] = datetime.datetime.now()
if ha_reloaded:
last_cumulated = 0
difference = int(ceil((float(current_cumulated) - float(last_cumulated)) \
/ float((current['date'] - ha_last_reload).seconds)))
diffpt = int(difference) * (current['date'] - ha_last_reload).seconds
try:
print "Current new cumulated connections: %s" % str(current_cumulated)
print "Calculation: float(%s) - float(%s) / float(%s-%s.seconds (%s))" % \
(str(current_cumulated), metrics[-1]['acu'], str(current['date']), str(metrics[-1]['date']),\
str((current['date'] - metrics[-1]['date']).seconds))
if ha_reloaded:
current['diff'] = difference
current['diffpt'] = diffpt
ha_reloaded = False
else:
current['diff'] = int(ceil((float(current_cumulated) - float(metrics[-1]['acu'])) \
/ float((current['date']-metrics[-1]['date']).seconds)))
current['diffpt'] = current['diff'] * (current['date'] -
metrics[-1]['date']).seconds
except ZeroDivisionError:
current['diff'] = 0
stack = openstack()
current['needed'] = needed_servers(acu=current['acu'],
diff=current['diff'])
current['active'] = len(
stack.active_backends()) #len(hastats.get_backends_up())
current['haactive'] = len(hastats.get_backends_up())
current['epoch'] = (datetime.datetime.now() - epoch_start).seconds
metrics.append(current)
return current
def new_metrics(current_cumulated, hareset=False):
global ha_reloaded
global ha_last_reload
current = {}
current['acu'] = current_cumulated
current['date'] = datetime.datetime.now()
if ha_reloaded:
last_cumulated = 0
difference = int(ceil((float(current_cumulated) - float(last_cumulated)) \
/ float((current['date'] - ha_last_reload).seconds)))
diffpt = int(difference) * (current['date'] - ha_last_reload).seconds
try:
print "Current new cumulated connections: %s" % str(current_cumulated)
print "Calculation: float(%s) - float(%s) / float(%s-%s.seconds (%s))" % \
(str(current_cumulated), metrics[-1]['acu'], str(current['date']), str(metrics[-1]['date']),\
str((current['date'] - metrics[-1]['date']).seconds))
if ha_reloaded:
current['diff'] = difference
current['diffpt'] = diffpt
ha_reloaded = False
else:
current['diff'] = int(ceil((float(current_cumulated) - float(metrics[-1]['acu'])) \
/ float((current['date']-metrics[-1]['date']).seconds)))
current['diffpt'] = current['diff'] * (current['date']-metrics[-1]['date']).seconds
except ZeroDivisionError:
current['diff'] = 0
stack = openstack()
current['needed'] = needed_servers(acu=current['acu'], diff=current['diff'])
current['active'] = len(stack.active_backends())#len(hastats.get_backends_up())
current['haactive'] = len(hastats.get_backends_up())
current['epoch'] = (datetime.datetime.now()-epoch_start).seconds
metrics.append(current)
return current
