"""
Cluster Monitor Tool
Author: Phillip Shea
-Updated: 2015-May-07
+Updated: 2016-Mar-07
This tool provides real-time visualization of the cluster member roles for all
shards in the config datastore.
-A file named 'cluster.json' contaning a list of the IP addresses of the
-controllers is required. This resides in the same directory as monitor.py.
+A file named 'cluster.json' contaning a list of the IP addresses and port numbers
+of the controllers is required. This resides in the same directory as monitor.py.
"user" and "pass" are not required for monitor.py, but they may be
needed for other apps in this folder. The file should look like this:
{
"cluster": {
"controllers": [
- "172.17.10.93",
- "172.17.10.94",
- "172.17.10.95"
+ {"ip": "172.17.10.93", "port": "8181"},
+ {"ip": "172.17.10.93", "port": "8181"},
+ {"ip": "172.17.10.93", "port": "8181"}
],
"user": "username",
- "pass": "password"
+ "pass": "password",
+ "shards_to_exclude": [] # list of shard names to omit from output
}
}
import string
-def rest_get(restURL):
+def rest_get(restURL, username, password):
rest_buffer = BytesIO()
c = pycurl.Curl()
c.setopt(c.TIMEOUT, 2)
c.setopt(c.URL, str(restURL))
c.setopt(c.HTTPGET, 0)
c.setopt(c.WRITEFUNCTION, rest_buffer.write)
+ c.setopt(pycurl.USERPWD, "%s:%s" % (str(username), str(password)))
c.perform()
c.close()
return json.loads(rest_buffer.getvalue())
def getClusterRolesWithCurl(shardName, *args):
- ips = args[0]
+ controllers = args[0]
names = args[1]
controller_state = {}
- for i, ip in enumerate(ips):
- controller_state[ip] = None
- url = 'http://' + ip + ':' + '8181/jolokia/read/org.opendaylight.controller:'
+ for i, controller in enumerate(controllers):
+ controller_state[controller["ip"]] = None
+ url = "http://" + controller["ip"] + ":" + controller["port"] + "/jolokia/read/org.opendaylight.controller:"
url += 'Category=Shards,name=' + names[i]
url += '-shard-' + shardName + '-config,type=DistributedConfigDatastore'
try:
- resp = rest_get(url)
+ resp = rest_get(url, username, password)
if resp['status'] != 200:
- controller_state[ip] = 'HTTP ' + str(resp['status'])
+ controller_state[controller["ip"]] = 'HTTP ' + str(resp['status'])
if 'value' in resp:
data_value = resp['value']
- controller_state[ip] = data_value['RaftState']
+ controller_state[controller["ip"]] = data_value['RaftState']
except:
if 'timed out' in str(sys.exc_info()[1]):
- controller_state[ip] = 'timeout'
+ controller_state[controller["ip"]] = 'timeout'
elif 'JSON' in str(sys.exc_info()):
- controller_state[ip] = 'JSON error'
+ controller_state[controller["ip"]] = 'JSON error'
elif 'connect to host' in str(sys.exc_info()):
- controller_state[ip] = 'no connection'
+ controller_state[controller["ip"]] = 'no connection'
else:
- controller_state[ip] = 'down'
+ controller_state[controller["ip"]] = 'down'
return controller_state
exit(1)
try:
controllers = data["cluster"]["controllers"]
+ shards_to_exclude = data["cluster"]["shards_to_exclude"]
+ username = data["cluster"]["user"]
+ password = data["cluster"]["pass"]
except:
print str(sys.exc_info())
print 'Error reading the file cluster.json'
Shards = set()
# Retrieve controller names and shard names.
for controller in controllers:
- url = "http://" + controller + ":8181/jolokia/read/org.opendaylight.controller:"
+ url = "http://" + controller["ip"] + ":" + controller["port"] + "/jolokia/read/org.opendaylight.controller:"
url += "Category=ShardManager,name=shard-manager-config,type=DistributedConfigDatastore"
+ rest_get(url, username, password)
try:
- data = rest_get(url)
+ data = rest_get(url, username, password)
except:
- print 'Unable to retrieve shard names from ' + controller
+ print 'Unable to retrieve shard names from ' + str(controller)
print 'Are all controllers up?'
print str(sys.exc_info()[1])
exit(1)
# collect shards found in any controller; does not require all controllers to have the same shards
for localShard in data['value']['LocalShards']:
- shardName = localShard[(localShard.find("-shard-")+7):localShard.find("-config")]
- Shards.add(shardName)
+ shardName = localShard[(localShard.find("-shard-") + 7):localShard.find("-config")]
+ if shardName not in shards_to_exclude:
+ Shards.add(shardName)
print controller_names
print Shards
-field_len = max(map(len, Shards))+2
+field_len = max(map(len, Shards)) + 2
stdscr = curses.initscr()
curses.noecho()
for row, controller in enumerate(controller_names):
stdscr.addstr(row + 1, 0, string.center(controller, field_len), curses.color_pair(1))
for data_column, shard in enumerate(Shards):
- stdscr.addstr(0, (field_len+1) * (data_column + 1), string.center(shard, field_len), curses.color_pair(1))
+ stdscr.addstr(0, (field_len + 1) * (data_column + 1), string.center(shard, field_len), curses.color_pair(1))
stdscr.addstr(len(Shards) + 2, 0, 'Press q to quit.', curses.color_pair(1))
stdscr.refresh()
key = stdscr.getch()
for data_column, shard_name in enumerate(Shards):
- cluster_stat = getClusterRolesWithCurl(shard_name, controllers, controller_names)
- for row, controller in enumerate(controllers):
- status = size_and_color(cluster_stat, field_len, controller)
- stdscr.addstr(row + 1, (field_len+1) * (data_column + 1), status['txt'], status['color'])
- time.sleep(0.5)
- if odd_or_even % 2 == 0:
- stdscr.addstr(0, field_len/2 - 2, " <3 ", curses.color_pair(5))
- else:
- stdscr.addstr(0, field_len/2 - 2, " <3 ", curses.color_pair(0))
- stdscr.refresh()
+ if shard_name not in shards_to_exclude:
+ cluster_stat = getClusterRolesWithCurl(shard_name, controllers, controller_names)
+ for row, controller in enumerate(controllers):
+ status = size_and_color(cluster_stat, field_len, controller["ip"])
+ stdscr.addstr(row + 1, (field_len + 1) * (data_column + 1), status['txt'], status['color'])
+ time.sleep(0.5)
+ if odd_or_even % 2 == 0:
+ stdscr.addstr(0, field_len / 2 - 2, " <3 ", curses.color_pair(5))
+ else:
+ stdscr.addstr(0, field_len / 2 - 2, " <3 ", curses.color_pair(0))
+ stdscr.refresh()
# clean up
curses.nocbreak()
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