def update_conf():
""" Do we need to update the configuration? """
global ha_reloaded
stats = hastats.get_stat_backends()
stack = openstack()
backends = stack.backends()
if not len(backends) == len(stats):
ha = haproxy.HAproxy()
ha.compile(backends)
global ha_last_reload
ha_last_reload = datetime.datetime.now()
if ha.restart():
ha_reloaded = True
return True
return False
def update_conf():
""" Do we need to update the configuration? """
global ha_reloaded
stats = hastats.get_stat_backends()
stack = openstack()
backends = stack.backends()
if not len(backends) == len(stats):
ha = haproxy.HAproxy()
ha.compile(backends)
global ha_last_reload
ha_last_reload = datetime.datetime.now()
if ha.restart():
ha_reloaded = True
return True
return False
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()
