rand vnc port from 7000 to 7999, deamonizing websockets and avoid zombies

grid.py

@@ -69,7 +69,7 @@ def phyidgen(slave_name, unit_type):
     if str(unit_type) == 'lxc':
         full_list = list(range(2000,2999))
     if str(unit_type) == 'kvm':
-        full_list = list(range(100,150))
+        full_list = list(range(101,150))
     exclude_list = []
     directory = 'db/'
     for dbfile in os.listdir(directory):

novnc.py

@@ -19,9 +19,12 @@ def spawn(target, options):
         a_options += c_option
 
     try:
-        command_line = 'python3 runwebsockify.py ' + a_options + vnctarget 
+        command_line = 'python3 runwebsockify.py -D ' + a_options + vnctarget 
         args = shlex.split(command_line)
-        p = subprocess.Popen(args)
-        print('spawned!')
+        #print(str(args))
+        p = subprocess.Popen(args, shell=False)
+        print('vnc connector API:{} <--> {}:{} spawned !'.format(target['listen_port'], target['target_host'], target['target_port'])) 
+        p.wait()
+        print('done.')
     except:
         raise

plugin.py

@@ -41,8 +41,8 @@ def create(json):
     except Exception as e:
         ioconfig.logger.warning('grid> slave not predefined. I will query for a capable one.')
         #slave_name = str(grid.query_happiness(region_id, weight))
-        slave_name = 'warrior'
-        #slave_name = 'lexx'
+        #slave_name = 'warrior'
+        slave_name = 'lexx'
         ioconfig.logger.info('{}> slave selected'.format(slave_name))
     proxobject = auth(slave_name)
     real_slave_name = proxobject.cluster.status.get()[0]['name']
@@ -322,10 +322,11 @@ def vmvnc(json):
     slaveip = ioconfig.parser.get(str(slave_name), 'ipv4')
     #slaveport = socket['port']
     slaveport = ticket['port']
-    slave_id = 1 #TODO: fix this
 
     vnchost = ioconfig.parser.get('general', 'novnc_host')
-    listenport = str(int(slaveport) + 1000 + (int(slave_id) * 100)) #TODO: max 100 parallel connections/slave.
+    listenport = random.randint(7000, 9999)
+    #listenport = random.randint(7000, 7001)
+
 
     vnc_target = { 'target_host': slaveip, 
                    'target_port': slaveport,
@@ -342,11 +343,11 @@ def vmvnc(json):
     novnc.spawn(vnc_target, vnc_options)
     
     external_url = ioconfig.parser.get('general', 'novnc_url')
-    prefix = external_url + "?host=" + vnchost + "&port=" + listenport + "&view_only=false&encrypt=1&true_color=1&password="
+    prefix = external_url + "?host=" + vnchost + "&port=" + str(listenport) + "&view_only=false&encrypt=1&true_color=1&password="
     vnc_url = prefix + ticket['ticket']
 
     time.sleep(3) #wait few seconds for the parallel vncwebsocket
-    ioconfig.logger.info('{}[{}]> vnc port {} ready'.format(vm_owner, slave_name, listenport))
+    ioconfig.logger.info('{}[{}]> vnc port {} ready'.format(vm_owner, slave_name, str(listenport)))
     #response = { 'status':'VNC', 'fqdn':external_url, 'host':myip, 'port':listenport, 'encrypt':'0', 'true_color':'1', 'ticket':ticket['ticket'] }
     response = { 'status':'VNC', 'url':vnc_url }
     #print(vnc_url)

proxmaster.service

@@ -0,0 +1,19 @@
+[Unit]
+Description=Proxmaster
+After=network.target
+After=systemd-user-sessions.service
+After=network-online.target
+
+[Service]
+User=master
+Type=forking
+ExecStart=/usr/bin/screen -dmS proxmaster /home/master/proxmaster/start.sh
+#ExecStop=
+TimeoutSec=30
+Restart=on-failure
+RestartSec=30
+StartLimitInterval=350
+StartLimitBurst=10
+
+[Install]
+WantedBy=multi-user.target

start.sh

@@ -1,10 +1,10 @@
 #!/bin/bash
 
 # Log rotation
-LOG_DIR=${HOME}/proxmaster/log
-LOG_FILE="${LOG_DIR}/proxmaster.log"
+DIR=${HOME}/proxmaster
+LOG_FILE="${DIR}/log/proxmaster.log"
 
-mkdir -p $LOG_DIR
+mkdir -p $DIR/log
 
 TIME=`date -u +%s`
 
@@ -14,6 +14,5 @@ else
     touch ${LOG_FILE}
 fi
 
-cd ${LOG_DIR}/..
 #startuwsgi instance
-uwsgi config.ini
+uwsgi --logdate --ini config.ini

tools/humanjson.sh

@@ -2,7 +2,7 @@
 
 #makes jsons human (and machine) readable
 
-for filename in db/*.json ; do
+for filename in ../db/*.json ; do
     echo $filename;
     python3 -m json.tool $filename
     read;

tools/netstat.py

@@ -0,0 +1,87 @@
+#!/usr/bin/python
+
+import pwd
+import os
+import re
+import glob
+
+PROC_TCP = "/proc/net/tcp"
+STATE = {
+        '01':'ESTABLISHED',
+        '02':'SYN_SENT',
+        '03':'SYN_RECV',
+        '04':'FIN_WAIT1',
+        '05':'FIN_WAIT2',
+        '06':'TIME_WAIT',
+        '07':'CLOSE',
+        '08':'CLOSE_WAIT',
+        '09':'LAST_ACK',
+        '0A':'LISTEN',
+        '0B':'CLOSING'
+        }
+
+def _load():
+    ''' Read the table of tcp connections & remove header  '''
+    with open(PROC_TCP,'r') as f:
+        content = f.readlines()
+        content.pop(0)
+    return content
+
+def _hex2dec(s):
+    return str(int(s,16))
+
+def _ip(s):
+    ip = [(_hex2dec(s[6:8])),(_hex2dec(s[4:6])),(_hex2dec(s[2:4])),(_hex2dec(s[0:2]))]
+    return '.'.join(ip)
+
+def _remove_empty(array):
+    return [x for x in array if x !='']
+
+def _convert_ip_port(array):
+    host,port = array.split(':')
+    return _ip(host),_hex2dec(port)
+
+def netstat():
+    '''
+    Function to return a list with status of tcp connections at linux systems
+    To get pid of all network process running on system, you must run this script
+    as superuser
+    '''
+
+    content=_load()
+    result = []
+    for line in content:
+        line_array = _remove_empty(line.split(' '))     # Split lines and remove empty spaces.
+        l_host,l_port = _convert_ip_port(line_array[1]) # Convert ipaddress and port from hex to decimal.
+        r_host,r_port = _convert_ip_port(line_array[2]) 
+        tcp_id = line_array[0]
+        state = STATE[line_array[3]]
+        uid = pwd.getpwuid(int(line_array[7]))[0]       # Get user from UID.
+        inode = line_array[9]                           # Need the inode to get process pid.
+        pid = _get_pid_of_inode(inode)                  # Get pid prom inode.
+        try:                                            # try read the process name.
+            exe = os.readlink('/proc/'+pid+'/exe')
+        except:
+            exe = None
+
+        nline = [tcp_id, uid, l_host+':'+l_port, r_host+':'+r_port, state, pid, exe]
+        result.append(nline)
+    return result
+
+def _get_pid_of_inode(inode):
+    '''
+    To retrieve the process pid, check every running process and look for one using
+    the given inode.
+    '''
+    for item in glob.glob('/proc/[0-9]*/fd/[0-9]*'):
+        try:
+            if re.search(inode,os.readlink(item)):
+                return item.split('/')[2]
+        except:
+            pass
+    return None
+
+if __name__ == '__main__':
+    for conn in netstat():
+        print conn
+