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import os, json, time, re, sys
from clusterman.config import CONF
def ls(group=None):
nodes_path=CONF.NODE_FILE
nodes=None
if os.path.exists(nodes_path):
with open(nodes_path) as f:
nodes=json.load(f)
else:
print("Please perform a scan before")
exit(0)
# Setup group pattern
pattern=None
if group is not None:
if group in CONF["cluster"]["groups"]:
pattern = re.compile(CONF["cluster"]["groups"][group])
else:
print("Group {} not found".format(group))
sys.exit(1)
# Print nodes
for node in nodes:
if pattern is not None:
if pattern.match(node):
print(node)
else:
print(node)
def scan(timeout):
from_split=[int(n) for n in CONF["cluster"]["ip4_from"].split(".")]
to_split=[int(n) for n in CONF["cluster"]["ip4_to"].split(".")]
ignore_list=[ip.strip(" ") for ip in CONF["cluster"]["ip4_ignore"]]
nodes=list()
print("----- Starting node scan (timeout={}s) -----".format(timeout))
for W in range(from_split[0],to_split[0]+1):
for X in range(from_split[1],to_split[1]+1):
for Y in range(from_split[2],to_split[2]+1):
for Z in range(from_split[3],to_split[3]+1):
ip="{}.{}.{}.{}".format(W,X,Y,Z)
if ip in ignore_list:
print("Skipping {}".format(ip))
continue
response = os.system("ping -c 1 -W " + str(timeout)+ " " + ip + " &>/dev/null")
print("Contacting {}...".format(ip),end='')
if response==0:
nodes.append(ip)
print("=> Found!!")
else:
print("")
with open(CONF.NODE_FILE, "w") as f:
f.write(json.dumps(nodes,indent=4))
CONF["cache"]["last_scan"]=int(time.time())
CONF.save()
def check(timeout):
nodes_path=CONF.NODE_FILE
nodes=None
if os.path.exists(nodes_path):
with open(nodes_path) as f:
nodes=json.load(f)
else:
print("Please perform a scan before")
exit(0)
if not nodes == None:
fail=False
for ip in nodes:
print("Contacting {}...".format(ip),end='')
response = os.system("ping -c 1 -W " + str(timeout)+ " " + ip + " &>/dev/null")
if response == 0:
print("")
else:
fail=True
print("=> Not responding!!")
if not fail:
print("Success: All nodes are reachable")
else:
print("Error: Some of your nodes are not reachable")
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