GanetiCluster.py 11.1 KB
   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
from pysqlite2 import dbapi2 as sqlite
#import sys, os
import sys, time, paramiko, os, requests, base64, json, time
import Utils
from Instance import Instance

headers = {
"accept": "application/json",
"content-type": "application/json",
"user-agent": "Ganeti RAPI Client",
}


class GanetiCluster(object):
'''
This class holds all instances that take part in the virtual cluster.
It can create and stop new instances - and working in conjuction with the
db specific classes set up various environments.
'''


def __init__(self,properties_file):
'''
Constructor
'''
self.utils = Utils.Utils(properties_file)
self.base_url = 'https://192.168.1.6:5080/2/'
self.username = "ganeti_webmgr"
self.password = "9CCNPcF4SJyX"

# Make sure the sqlite file exists. if not, create it and the table we need
con = sqlite.connect(self.utils.db_file)
cur = con.cursor()
try:
instances = cur.execute('select * from instances'
).fetchall()
print """Already discovered instances from previous database file. Use describe_instances without arguments to update.
"""
print "Found records:\n", instances
except sqlite.DatabaseError:
cur.execute('create table instances(id text, image_id text, dns_name text, ip_address text, mac_address text, vpn text, state text, instance_type text, launch_time text, placement text, username text, password text)')
con.commit()
cur.close()
con.close()
def describe_instances(self, state=None, pattern=None):
instances = []
if state != "pollDB":
kwargs = {
"headers": headers,
"auth": (self.username, self.password),
"verify": False,
"params":"bulk=1"
}
r = requests.request("get", self.base_url+"instances", **kwargs)
list_answer = json.loads(r.content)
for i in range(0,len(list_answer)):
#TODO check the image id
server_id = str(list_answer[i]['name']);
server_image_id = str(list_answer[i]['os']);
server_state = str(list_answer[i]['status']);
server_instance_type = str(list_answer[i]['disk_usage'])+"_"+str(list_answer[i]['oper_vcpus'])+"_"+str(list_answer[i]['oper_ram']);
server_launch_time = str(list_answer[i]['mtime']);
server_placement = str(list_answer[i]['pnode']);
server_vpn = str(list_answer[i]['pnode'])+":"+str(list_answer[i]['network_port']);
server_dns_name = str(list_answer[i]['name']);
server_mac_address = str(list_answer[i]['nic.macs'][0])
server_ip_address = self.utils.mac_ip_mapping[server_dns_name][1];

instance = Instance(server_id, server_image_id, server_dns_name, server_ip_address, server_mac_address, server_vpn, server_state, server_instance_type, server_launch_time, server_placement, "root","secretpw");
is_mine = False
r_tags = requests.request("get", self.base_url+"instances/"+server_id+"/tags", **kwargs)
list_tag_answer = json.loads(r_tags.content)
for j in range(0,len(list_tag_answer)):
if list_tag_answer[j] == "owner:"+self.utils.ownerTag:
is_mine = True
break
if is_mine:
is_mine = False
if state:
if state == server_state:
instances.append(instance)
else:
instances.append(instance)
## if simple call
if not state:
self.utils.refresh_instance_db(instances)
else :
## read from the local database
con = sqlite.connect(self.utils.db_file)
cur = con.cursor()
instancesfromDB = []
try:
instancesfromDB = cur.execute('select * from instances'
).fetchall()
except sqlite.DatabaseError:
con.rollback()
cur.close()
con.close()
for instancefromDB in instancesfromDB:
instances.append(self.utils.return_instance_from_tuple(instancefromDB))
## if you are using patterns and state, show only matching state and id's
matched_instances = []
if pattern:
for instance in instances:
if instance.id.find(pattern) != -1:
matched_instances.append(instance)
if len(matched_instances) > 0:
return matched_instances
else:
return None
else:
return instances

def describe_images(self, pattern=None):
kwargs = {
"headers": headers,
"auth": (self.username, self.password),
"verify": False
}
r = requests.request("get", self.base_url+"os", **kwargs)
images = json.loads(r.content)
return images

def get_occupied_dns_names(self):
occupied = []
kwargs = {
"headers": headers,
"auth": (self.username, self.password),
"verify": False,
"params":"bulk=1"
}
r = requests.request("get", self.base_url+"instances", **kwargs)
list_answer = json.loads(r.content)
for i in range(0,len(list_answer)):
occupied.append(str(list_answer[i]['name']));
return occupied
def run_instances(self, instance_count, os, disk, cpu, ram):
occupied = self.get_occupied_dns_names();
return self.run_instances_names(self.utils.getFree_dns_names(int(instance_count),occupied), os, disk, cpu, ram)
def run_instances_names(self, names, os, disk, cpu, ram):
instances = []
pending_instances = {}
jobIDs = []
running_vm_cnt = 0
for name in names:
print "running instance: " + name
kwargs = {
"headers": headers,
"auth": (self.username, self.password),
"verify": False
}

body = {
"__version__": 1,
"mode": 'create',
"hypervisor": 'kvm',
"os_type": os,
"instance_name": name,
"disk_template": 'plain',
"disks": [{'size':disk}],
"beparams": {"memory":ram,"maxmem":ram,"minmem":ram,'vcpus':cpu},
"hvparams": {'vnc_bind_address':'0.0.0.0'},
"nics": [{'ip':self.utils.mac_ip_mapping[name][1],'mac':self.utils.mac_ip_mapping[name][0]}]
}
rabbit_limit = int(self.utils.rabbit_maxmem/int(ram))
if running_vm_cnt < rabbit_limit:
body['pnode'] = 'rabbit.delab.csd.auth.gr'
elif running_vm_cnt < rabbit_limit+int(self.utils.panther_maxmem/int(ram)):
body['pnode'] = 'panther.delab.csd.auth.gr'
else:
body['pnode'] = 'deer.delab.csd.auth.gr'
kwargs["data"] = json.dumps(body)

r = requests.request("post", self.base_url+"instances", **kwargs)
jobID = json.loads(r.content)
jobIDs.append(jobID)

instance = Instance(name, os, name, self.utils.mac_ip_mapping[name][1], self.utils.mac_ip_mapping[name][0], "", "", disk+"_"+cpu+"_"+ram, str(time.time()), "", "root","secretpw");

pending_instances[str(jobID)] = instance
running_vm_cnt = running_vm_cnt + 1

failures = []
for JID in jobIDs:
status = ""
while status != "success":
time.sleep(5)
kwargs = {
"headers": headers,
"auth": (self.username, self.password),
"verify": False
}

body = {
"fields": ['status'],
}

kwargs["data"] = json.dumps(body)

r = requests.request("get", self.base_url+"jobs/"+str(JID)+"/wait", **kwargs)
status = json.loads(r.content)['job_info'][0]
# print status
if (status == 'error'):
failures.append(JID)
break
elif(status == 'success'):
instances.append(pending_instances[str(JID)]);

#print failures
self.tag_instances_owner(instances)
return instances

def tag_instances_owner(self, instances):
jobIDs = []
headersTag = {
"accept": "application/json",
"user-agent": "Ganeti RAPI Client",
}
for instance in instances:
print "tagging instance: " + instance.id
kwargs = {
"headers": headersTag,
"auth": (self.username, self.password),
"verify": False
}

body = {
"tag": ['owner:'+self.utils.ownerTag]
}
kwargs["params"] = body

r = requests.request("put", self.base_url+"instances/"+instance.id+"/tags", **kwargs)
jobID = json.loads(r.content)
jobIDs.append(jobID)
def terminate_instances(self, names):
for name in names:
kwargs = {
"headers": headers,
"auth": (self.username, self.password),
"verify": False
}
print "Terminating: ", name
r = requests.request("delete", self.base_url+"instances/"+str(name), **kwargs)
self.utils.free_ips.append(name)
def block_until_running (self, instances):
''' Blocks until all defined instances have reached running state and an ip has been assigned'''
## Run describe instances until everyone is running
running_instances = []
remaining = len(instances)
for instance in instances:
print "Waiting for", remaining, "instances to run"
name = instance.dns_name
kwargs = {
"headers": headers,
"auth": (self.username, self.password),
"verify": False
}
status = ""
timeout = 300
while status != "running" and timeout > 0:
time.sleep(5)
r = requests.request("get", self.base_url+"instances/"+str(name), **kwargs)
status = json.loads(r.content)['status']
timeout = timeout - 5
if (timeout <= 0):
print "timeout while waiting for running state: " + str(name)
else:
remaining = remaining - 1
running_instances.append(instance)
#call describe_instances() to store instances to db
self.describe_instances()
return self.block_until_ping(instances)

def block_until_ping(self, instances):
''' Blocks until all defined instances have reached running state and an ip has been assigned'''
## Run describe instances until everyone is running
ping_instances = []
remaining = len(instances)
for instance in instances:
print "Waiting for", remaining, "instances to ping"
ping = False
timeout = 150
while (not ping and timeout > 0):
response = os.system("ping -c 1 -W 4 " + instance.ip_address)
if response == 0:
ping = True;
else:
time.sleep(1);
timeout = timeout - 1
if (timeout <= 0):
print "timeout while trying to ping: " + str(instance.ip_address)
else:
remaining = remaining - 1
ping_instances.append(instance)
return instances
if __name__ == "__main__":
euca = GanetiCluster('Coordinator_gf_r1_0p_6a_4r_4cl_smg_s_first_True_safe_timelimit.properties')
euca.describe_instances();
euca.block_until_ping(euca.block_until_running(euca.run_instances(['vm50.delab.csd.auth.gr','vm51.delab.csd.auth.gr'],'snf-image+hadoop_limit','5G','2','1G')));
k = euca.describe_instances();
euca.terminate_instances([k[0].dns_name,k[1].dns_name]);