| #!/usr/bin/python |
| # Version @VERSION@ |
| # |
| # A plugin for executing script needed by vmops cloud |
| |
| import os, sys, time |
| import XenAPIPlugin |
| sys.path.extend(["/opt/xensource/sm/", "/usr/local/sbin/", "/sbin/"]) |
| import base64 |
| import hostvmstats |
| import socket |
| import stat |
| import tempfile |
| import util |
| |
| def echo(fn): |
| def wrapped(*v, **k): |
| name = fn.__name__ |
| util.SMlog("#### VMOPS enter %s ####" % name ) |
| res = fn(*v, **k) |
| util.SMlog("#### VMOPS exit %s ####" % name ) |
| return res |
| return wrapped |
| |
| @echo |
| def gethostvmstats(session, args): |
| collect_host_stats = args['collectHostStats'] |
| consolidation_function = args['consolidationFunction'] |
| interval = args['interval'] |
| start_time = args['startTime'] |
| result = hostvmstats.get_stats(session, collect_host_stats, consolidation_function, interval, start_time) |
| return result |
| |
| @echo |
| def setup_iscsi(session, args): |
| uuid=args['uuid'] |
| try: |
| cmd = ["bash", "/opt/xensource/bin/setup_iscsi.sh", uuid] |
| txt = util.pread2(cmd) |
| except: |
| txt = '' |
| return txt |
| |
| @echo |
| def getvncport(session, args): |
| domid = args['domID'] |
| hvm = args['hvm'] |
| if hvm == 'true': |
| path1 = "/local/domain/" + domid + "/qemu-pid" |
| path2 = "/local/domain/" + domid + "/console/vnc-port" |
| else: |
| path1 = "/local/domain/" + domid + "/serial/0/vncterm-pid" |
| path2 = "/local/domain/" + domid + "/serial/0/vnc-port" |
| try: |
| cmd = ["xenstore-read", path1] |
| pid = util.pread2(cmd) |
| pid = pid.strip() |
| cmd = ["ps", pid] |
| util.pread2(cmd) |
| cmd = ["xenstore-read", path2] |
| vncport = util.pread2(cmd) |
| vncport = vncport.strip() |
| return vncport |
| except: |
| return '' |
| |
| @echo |
| def getgateway(session, args): |
| mgmt_ip = args['mgmtIP'] |
| try: |
| cmd = ["bash", "/opt/xensource/bin/network_info.sh", "-g", mgmt_ip] |
| txt = util.pread2(cmd) |
| except: |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def preparemigration(session, args): |
| uuid = args['uuid'] |
| try: |
| cmd = ["/opt/xensource/bin/make_migratable.sh", uuid] |
| util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog("Catch prepare migration exception" ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def setIptables(session, args): |
| try: |
| cmd = ["/bin/bash", "/opt/xensource/bin/setupxenserver.sh"] |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" setIptables execution failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def pingdomr(session, args): |
| host = args['host'] |
| port = args['port'] |
| socket.setdefaulttimeout(3) |
| s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
| try: |
| s.connect((host,int(port))) |
| txt = 'success' |
| except: |
| txt = '' |
| |
| s.close() |
| |
| return txt |
| |
| @echo |
| def pingxenserver(session, args): |
| txt = 'success' |
| return txt |
| |
| @echo |
| def ipassoc(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/ipassoc.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" ip associate failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def vm_data(session, args): |
| router_ip = args.pop('routerIP') |
| vm_ip = args.pop('vmIP') |
| |
| util.SMlog(" adding vmdata for VM with IP: " + vm_ip + " to router with IP: " + router_ip) |
| |
| for pair in args: |
| pairList = pair.split(',') |
| vmDataFolder = pairList[0] |
| vmDataFile = pairList[1] |
| vmDataValue = args[pair] |
| cmd = ["/bin/bash", "/opt/xensource/bin/vm_data.sh", "-r", router_ip, "-v", vm_ip, "-F", vmDataFolder, "-f", vmDataFile] |
| |
| fd = None |
| tmp_path = None |
| if (vmDataValue != "none"): |
| try: |
| fd,tmp_path = tempfile.mkstemp() |
| tmpfile = open(tmp_path, 'w') |
| |
| if (vmDataFolder == "userdata"): |
| vmDataValue = base64.urlsafe_b64decode(vmDataValue) |
| |
| tmpfile.write(vmDataValue) |
| tmpfile.close() |
| cmd.append("-d") |
| cmd.append(tmp_path) |
| except: |
| util.SMlog(" vmdata failed to write tempfile " ) |
| os.close(fd) |
| os.remove(tmp_path) |
| return '' |
| |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" vmdata failed with folder: " + vmDataFolder + " and file: " + vmDataFile) |
| txt = '' |
| |
| if (fd != None): |
| os.close(fd) |
| os.remove(tmp_path) |
| |
| return txt |
| |
| def pingtest(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/pingtest.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" pingtest failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def savePassword(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/save_password_to_domr.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" save password to domr failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def saveDhcpEntry(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/dhcp_entry.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" save dhcp entry failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def lt2p_vpn(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/l2tp_vpn.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog("l2tp vpn failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def setLinkLocalIP(session, args): |
| brName = args['brName'] |
| try: |
| cmd = ["ip", "route", "del", "169.254.0.0/16"] |
| txt = util.pread2(cmd) |
| except: |
| txt = '' |
| try: |
| cmd = ["ifconfig", brName, "169.254.0.1", "netmask", "255.255.0.0"] |
| txt = util.pread2(cmd) |
| except: |
| txt = '' |
| try: |
| cmd = ["ip", "route", "add", "169.254.0.0/16", "dev", brName, "src", "169.254.0.1"] |
| txt = util.pread2(cmd) |
| except: |
| txt = '' |
| txt = 'success' |
| return txt |
| |
| @echo |
| def setFirewallRule(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/call_firewall.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" set firewall rule failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def setLoadBalancerRule(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/call_loadbalancer.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| txt = 'success' |
| except: |
| util.SMlog(" set loadbalancer rule failed " ) |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def createFile(session, args): |
| file_path = args['filepath'] |
| file_contents = args['filecontents'] |
| |
| try: |
| f = open(file_path, "w") |
| f.write(file_contents) |
| f.close() |
| txt = 'success' |
| except: |
| util.SMlog(" failed to create HA proxy cfg file ") |
| txt = '' |
| |
| return txt |
| |
| @echo |
| def deleteFile(session, args): |
| file_path = args["filepath"] |
| |
| try: |
| if os.path.isfile(file_path): |
| os.remove(file_path) |
| txt = 'success' |
| except: |
| util.SMlog(" failed to remove HA proxy cfg file ") |
| txt = '' |
| |
| return txt |
| |
| |
| @echo |
| def networkUsage(session, args): |
| sargs = args['args'] |
| cmd = sargs.split(' ') |
| cmd.insert(0, "/opt/xensource/bin/networkUsage.sh") |
| cmd.insert(0, "/bin/bash") |
| try: |
| txt = util.pread2(cmd) |
| except: |
| util.SMlog(" network usage error " ) |
| txt = '' |
| |
| return txt |
| |
| def get_private_nic(session, args): |
| vms = session.xenapi.VM.get_all() |
| host_uuid = args.get('host_uuid') |
| host = session.xenapi.host.get_by_uuid(host_uuid) |
| piflist = session.xenapi.host.get_PIFs(host) |
| mgmtnic = 'eth0' |
| for pif in piflist: |
| pifrec = session.xenapi.PIF.get_record(pif) |
| network = pifrec.get('network') |
| nwrec = session.xenapi.network.get_record(network) |
| if nwrec.get('name_label') == 'cloud-guest': |
| return pifrec.get('device') |
| if pifrec.get('management'): |
| mgmtnic = pifrec.get('device') |
| |
| return mgmtnic |
| |
| def chain_name(vm_name): |
| if vm_name.startswith('i-') or vm_name.startswith('r-'): |
| if vm_name.endswith('untagged'): |
| return '-'.join(vm_name.split('-')[:-1]) |
| return '-'.join(vm_name.split('-')) |
| return vm_name |
| |
| def chain_name_def(vm_name): |
| if vm_name.startswith('i-') or vm_name.startswith('r-'): |
| if vm_name.endswith('untagged'): |
| return '-'.join(vm_name.split('-')[:-2]) + "-def" |
| return '-'.join(vm_name.split('-')[:-1]) + "-def" |
| return vm_name |
| |
| @echo |
| def can_bridge_firewall(session, args): |
| host_uuid = args.get('host_uuid') |
| try: |
| util.pread2(['iptables', '-N', 'BRIDGE-FIREWALL']) |
| util.pread2(['iptables', '-I', 'BRIDGE-FIREWALL', '-m', 'state', '--state', 'RELATED,ESTABLISHED', '-j', 'ACCEPT']) |
| util.pread2(['iptables', '-D', 'FORWARD', '-j', 'RH-Firewall-1-INPUT']) |
| except: |
| util.SMlog('Chain BRIDGE-FIREWALL already exists') |
| privnic = get_private_nic(session, args) |
| result = 'true' |
| try: |
| util.pread2(['/bin/bash', '-c', 'iptables -n -L FORWARD | grep BRIDGE-FIREWALL']) |
| except: |
| try: |
| util.pread2(['iptables', '-I', 'FORWARD', '-m', 'physdev', '--physdev-is-bridged', '-j', 'BRIDGE-FIREWALL']) |
| util.pread2(['iptables', '-A', 'FORWARD', '-m', 'physdev', '--physdev-is-bridged', '--physdev-out', privnic, '-j', 'ACCEPT']) |
| util.pread2(['iptables', '-A', 'FORWARD', '-j', 'DROP']) |
| except: |
| result = 'false' |
| |
| if not os.path.exists('/var/run/cloud'): |
| os.makedirs('/var/run/cloud') |
| |
| cleanup_rules_for_dead_vms(session) |
| cleanup_rules(session, args) |
| |
| return result |
| |
| |
| def ipset(ipsetname, proto, start, end, ips): |
| try: |
| util.pread2(['ipset', '-N', ipsetname, 'iptreemap']) |
| except: |
| util.SMlog("ipset chain already exists" + ipsetname) |
| |
| result = True |
| ipsettmp = ''.join(''.join(ipsetname.split('-')).split('_')) + str(int(time.time()) % 1000) |
| |
| try: |
| util.pread2(['ipset', '-N', ipsettmp, 'iptreemap']) |
| for ip in ips: |
| try: |
| util.pread2(['ipset', '-A', ipsettmp, ip]) |
| except CommandException, cex: |
| if cex.reason.rfind('already in set') == -1: |
| raise |
| util.pread2(['ipset', '-W', ipsettmp, ipsetname]) |
| util.pread2(['ipset', '-X', ipsettmp]) |
| except: |
| util.SMlog("Failed to program ipset " + ipsetname) |
| result = False |
| |
| return result |
| |
| @echo |
| def destroy_network_rules_for_vm(session, args): |
| vm_name = args.pop('vmName') |
| vmchain = chain_name(vm_name) |
| vmchain_default = chain_name_def(vm_name) |
| |
| delete_rules_for_vm_in_bridge_firewall_chain(vm_name) |
| if vm_name.startswith('i-') or vm_name.startswith('r-'): |
| try: |
| util.pread2(['iptables', '-F', vmchain_default]) |
| util.pread2(['iptables', '-X', vmchain_default]) |
| except: |
| util.SMlog("Ignoring failure to delete chain " + vmchain_default) |
| |
| destroy_ebtables_rules(vmchain) |
| |
| try: |
| util.pread2(['iptables', '-F', vmchain]) |
| util.pread2(['iptables', '-X', vmchain]) |
| except: |
| util.SMlog("Ignoring failure to delete chain " + vmchain) |
| |
| |
| |
| remove_rule_log_for_vm(vm_name) |
| |
| if 1 in [ vm_name.startswith(c) for c in ['r-', 's-', 'v-'] ]: |
| return 'true' |
| |
| try: |
| setscmd = "ipset --save | grep " + vmchain + " | grep '^-N' | awk '{print $2}'" |
| setsforvm = util.pread2(['/bin/bash', '-c', setscmd]).split('\n') |
| for set in setsforvm: |
| if set != '': |
| util.pread2(['ipset', '-F', set]) |
| util.pread2(['ipset', '-X', set]) |
| except: |
| util.SMlog("Failed to destroy ipsets for %" % vm_name) |
| |
| |
| return 'true' |
| |
| @echo |
| def destroy_ebtables_rules(vm_chain): |
| |
| delcmd = "ebtables-save | grep ROUTING | grep " + vm_chain + " | sed 's/-A/-D/'" |
| delcmds = util.pread2(['/bin/bash', '-c', delcmd]).split('\n') |
| delcmds.pop() |
| for cmd in delcmds: |
| try: |
| dc = cmd.split(' ') |
| dc.insert(0, 'ebtables') |
| dc.insert(1, '-t') |
| dc.insert(2, 'nat') |
| util.pread2(dc) |
| except: |
| util.SMlog("Ignoring failure to delete ebtables rules for vm " + vm_chain) |
| chains = [vm_chain+"-in", vm_chain+"-out"] |
| for chain in chains: |
| try: |
| util.pread2(['ebtables', '-t', 'nat', '-F', chain]) |
| util.pread2(['ebtables', '-t', 'nat', '-X', chain]) |
| except: |
| util.SMlog("Ignoring failure to delete ebtables chain for vm " + vm_chain) |
| |
| |
| |
| @echo |
| def default_ebtables_rules(vm_chain, vif, vm_ip, vm_mac): |
| |
| vmchain_in = vm_chain + "-in" |
| vmchain_out = vm_chain + "-out" |
| |
| for chain in [vmchain_in, vmchain_out]: |
| try: |
| util.pread2(['ebtables', '-t', 'nat', '-N', chain]) |
| except: |
| try: |
| util.pread2(['ebtables', '-t', 'nat', '-F', chain]) |
| except: |
| util.SMlog("Failed to create ebtables nat rule, skipping") |
| return 'true' |
| |
| try: |
| # -s ! 52:54:0:56:44:32 -j DROP |
| util.pread2(['ebtables', '-t', 'nat', '-A', 'PREROUTING', '-i', vif, '-j', vmchain_in]) |
| util.pread2(['ebtables', '-t', 'nat', '-A', 'POSTROUTING', '-o', vif, '-j', vmchain_out]) |
| except: |
| util.SMlog("Failed to program default rules") |
| return 'false' |
| |
| try: |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_in, '-i', vif, '-s', '!', vm_mac, '-j', 'DROP']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_in, '-p', 'ARP', '-s', '!', vm_mac, '-j', 'DROP']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_in, '-p', 'ARP', '--arp-mac-src', '!', vm_mac, '-j', 'DROP']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_in, '-p', 'ARP', '--arp-ip-src', '!', vm_ip, '-j', 'DROP']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_in, '-p', 'ARP', '--arp-op', 'Request', '-j', 'ACCEPT']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_in, '-p', 'ARP', '--arp-op', 'Reply', '-j', 'ACCEPT']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_in, '-p', 'ARP', '-j', 'DROP']) |
| except: |
| util.SMlog("Failed to program default ebtables IN rules") |
| return 'false' |
| |
| try: |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_out, '-p', 'ARP', '--arp-op', 'Reply', '--arp-mac-dst', '!', vm_mac, '-j', 'DROP']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_out, '-p', 'ARP', '--arp-ip-dst', '!', vm_ip, '-j', 'DROP']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_out, '-p', 'ARP', '--arp-op', 'Request', '-j', 'ACCEPT']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_out, '-p', 'ARP', '--arp-op', 'Reply', '-j', 'ACCEPT']) |
| util.pread2(['ebtables', '-t', 'nat', '-A', vmchain_out, '-p', 'ARP', '-j', 'DROP']) |
| except: |
| util.SMlog("Failed to program default ebtables OUT rules") |
| return 'false' |
| |
| return 'true' |
| |
| @echo |
| def default_network_rules_systemvm(session, args): |
| vm_name = args.pop('vmName') |
| try: |
| vm = session.xenapi.VM.get_by_name_label(vm_name) |
| if len(vm) != 1: |
| return 'false' |
| vm_rec = session.xenapi.VM.get_record(vm[0]) |
| vm_vifs = vm_rec.get('VIFs') |
| vifnums = [session.xenapi.VIF.get_record(vif).get('device') for vif in vm_vifs] |
| domid = vm_rec.get('domid') |
| except: |
| util.SMlog("### Failed to get domid or vif list for vm ##" + vm_name) |
| return 'false' |
| |
| if domid == '-1': |
| util.SMlog("### Failed to get domid for vm (-1): " + vm_name) |
| return 'false' |
| |
| vifs = ["vif" + domid + "." + v for v in vifnums] |
| #vm_name = '-'.join(vm_name.split('-')[:-1]) |
| vmchain = chain_name(vm_name) |
| |
| |
| delete_rules_for_vm_in_bridge_firewall_chain(vm_name) |
| |
| try: |
| util.pread2(['iptables', '-N', vmchain]) |
| except: |
| util.pread2(['iptables', '-F', vmchain]) |
| |
| |
| for vif in vifs: |
| try: |
| util.pread2(['iptables', '-A', 'BRIDGE-FIREWALL', '-m', 'physdev', '--physdev-is-bridged', '--physdev-out', vif, '-j', vmchain]) |
| util.pread2(['iptables', '-A', 'BRIDGE-FIREWALL', '-m', 'physdev', '--physdev-is-bridged', '--physdev-in', vif, '-j', vmchain]) |
| except: |
| util.SMlog("Failed to program default rules") |
| return 'false' |
| |
| util.pread2(['iptables', '-A', vmchain, '-j', 'ACCEPT']) |
| |
| if write_rule_log_for_vm(vm_name, '-1', '_ignore_', domid, '_initial_', '-1') == False: |
| util.SMlog("Failed to log default network rules for systemvm, ignoring") |
| return 'true' |
| |
| |
| @echo |
| def default_network_rules(session, args): |
| vm_name = args.pop('vmName') |
| vm_ip = args.pop('vmIP') |
| vm_id = args.pop('vmID') |
| vm_mac = args.pop('vmMAC') |
| |
| try: |
| vm = session.xenapi.VM.get_by_name_label(vm_name) |
| if len(vm) != 1: |
| util.SMlog("### Failed to get record for vm " + vm_name) |
| return 'false' |
| vm_rec = session.xenapi.VM.get_record(vm[0]) |
| domid = vm_rec.get('domid') |
| except: |
| util.SMlog("### Failed to get domid for vm " + vm_name) |
| return 'false' |
| if domid == '-1': |
| util.SMlog("### Failed to get domid for vm (-1): " + vm_name) |
| return 'false' |
| |
| vif = "vif" + domid + ".0" |
| tap = "tap" + domid + ".0" |
| vifs = [vif] |
| try: |
| util.pread2(['ifconfig', tap]) |
| vifs.append(tap) |
| except: |
| pass |
| |
| delete_rules_for_vm_in_bridge_firewall_chain(vm_name) |
| |
| |
| vmchain = chain_name(vm_name) |
| vmchain_default = chain_name_def(vm_name) |
| |
| destroy_ebtables_rules(vmchain) |
| |
| |
| try: |
| util.pread2(['iptables', '-N', vmchain]) |
| except: |
| util.pread2(['iptables', '-F', vmchain]) |
| |
| try: |
| util.pread2(['iptables', '-N', vmchain_default]) |
| except: |
| util.pread2(['iptables', '-F', vmchain_default]) |
| |
| try: |
| for v in vifs: |
| util.pread2(['iptables', '-A', 'BRIDGE-FIREWALL', '-m', 'physdev', '--physdev-is-bridged', '--physdev-out', v, '-j', vmchain_default]) |
| util.pread2(['iptables', '-A', 'BRIDGE-FIREWALL', '-m', 'physdev', '--physdev-is-bridged', '--physdev-in', v, '-j', vmchain_default]) |
| util.pread2(['iptables', '-A', vmchain_default, '-m', 'state', '--state', 'RELATED,ESTABLISHED', '-j', 'ACCEPT']) |
| #allow dhcp |
| for v in vifs: |
| util.pread2(['iptables', '-A', vmchain_default, '-m', 'physdev', '--physdev-is-bridged', '--physdev-in', v, '-p', 'udp', '--dport', '67', '--sport', '68', '-j', 'ACCEPT']) |
| util.pread2(['iptables', '-A', vmchain_default, '-m', 'physdev', '--physdev-is-bridged', '--physdev-out', v, '-p', 'udp', '--dport', '68', '--sport', '67', '-j', 'ACCEPT']) |
| |
| #don't let vm spoof its ip address |
| for v in vifs: |
| util.pread2(['iptables', '-A', vmchain_default, '-m', 'physdev', '--physdev-is-bridged', '--physdev-in', v, '--source', vm_ip, '-j', 'RETURN']) |
| util.pread2(['iptables', '-A', vmchain_default, '-j', vmchain]) |
| except: |
| util.SMlog("Failed to program default rules for vm " + vm_name) |
| return 'false' |
| |
| for v in vifs: |
| default_ebtables_rules(vm_chain, v, vm_ip, vm_mac) |
| |
| if write_rule_log_for_vm(vm_name, vm_id, vm_ip, domid, '_initial_', '-1') == False: |
| util.SMlog("Failed to log default network rules, ignoring") |
| |
| util.SMlog("Programmed default rules for vm " + vm_name) |
| return 'true' |
| |
| def check_domid_changed(session, vmName): |
| curr_domid = '-1' |
| try: |
| vm = session.xenapi.VM.get_by_name_label(vmName) |
| if len(vm) != 1: |
| util.SMlog("### Could not get record for vm ## " + vmName) |
| else: |
| vm_rec = session.xenapi.VM.get_record(vm[0]) |
| curr_domid = vm_rec.get('domid') |
| except: |
| util.SMlog("### Failed to get domid for vm ## " + vmName) |
| |
| |
| logfilename = "/var/run/cloud/" + vmName +".log" |
| if not os.path.exists(logfilename): |
| return ['-1', curr_domid] |
| |
| lines = (line.rstrip() for line in open(logfilename)) |
| |
| [_vmName,_vmID,_vmIP,old_domid,_signature,_seqno] = ['_', '-1', '_', '-1', '_', '-1'] |
| for line in lines: |
| [_vmName,_vmID,_vmIP,old_domid,_signature,_seqno] = line.split(',') |
| break |
| |
| return [curr_domid, old_domid] |
| |
| def delete_rules_for_vm_in_bridge_firewall_chain(vmName): |
| vm_name = vmName |
| vmchain = chain_name_def(vm_name) |
| |
| delcmd = "iptables -S BRIDGE-FIREWALL | grep " + vmchain + " | sed 's/-A/-D/'" |
| delcmds = util.pread2(['/bin/bash', '-c', delcmd]).split('\n') |
| delcmds.pop() |
| for cmd in delcmds: |
| try: |
| dc = cmd.split(' ') |
| dc.insert(0, 'iptables') |
| dc.pop() |
| util.pread2(dc) |
| except: |
| util.SMlog("Ignoring failure to delete rules for vm " + vmName) |
| |
| |
| def network_rules_for_rebooted_vm(session, vmName): |
| vm_name = vmName |
| [curr_domid, old_domid] = check_domid_changed(session, vm_name) |
| |
| if curr_domid == old_domid: |
| return True |
| |
| if old_domid == '-1': |
| return True |
| |
| if curr_domid == '-1': |
| return True |
| |
| util.SMlog("Found a rebooted VM -- reprogramming rules for " + vm_name) |
| |
| delete_rules_for_vm_in_bridge_firewall_chain(vm_name) |
| if 1 in [ vm_name.startswith(c) for c in ['r-', 's-', 'v-'] ]: |
| default_network_rules_systemvm(session, {"vmName":vm_name}) |
| return True |
| |
| vif = "vif" + curr_domid + ".0" |
| tap = "tap" + curr_domid + ".0" |
| vifs = [vif] |
| try: |
| util.pread2(['ifconfig', tap]) |
| vifs.append(tap) |
| except: |
| pass |
| vmchain = chain_name(vm_name) |
| vmchain_default = chain_name_def(vm_name) |
| |
| for v in vifs: |
| util.pread2(['iptables', '-A', 'BRIDGE-FIREWALL', '-m', 'physdev', '--physdev-is-bridged', '--physdev-out', v, '-j', vmchain_default]) |
| util.pread2(['iptables', '-A', 'BRIDGE-FIREWALL', '-m', 'physdev', '--physdev-is-bridged', '--physdev-in', v, '-j', vmchain_default]) |
| |
| #change antispoof rule in vmchain |
| try: |
| delcmd = "iptables -S " + vmchain_default + " | grep physdev-in | sed 's/-A/-D/'" |
| inscmd = "iptables -S " + vmchain_default + " | grep physdev-in | grep vif | sed -r 's/vif[0-9]+.0/" + vif + "/' | sed 's/-A/-I/'" |
| inscmd2 = "iptables -S " + vmchain_default + " | grep physdev-in | grep tap | sed -r 's/tap[0-9]+.0/" + tap + "/' | sed 's/-A/-I/'" |
| |
| ipts = [] |
| for cmd in [delcmd, inscmd, inscmd2]: |
| cmds = util.pread2(['/bin/bash', '-c', cmd]).split('\n') |
| cmds.pop() |
| for c in cmds: |
| ipt = c.split(' ') |
| ipt.insert(0, 'iptables') |
| ipt.pop() |
| ipts.append(ipt) |
| |
| for ipt in ipts: |
| try: |
| util.pread2(ipt) |
| except: |
| util.SMlog("Failed to rewrite antispoofing rules for vm " + vm_name) |
| except: |
| util.SMlog("No rules found for vm " + vm_name) |
| |
| rewrite_rule_log_for_vm(vm_name, curr_domid) |
| return True |
| |
| def rewrite_rule_log_for_vm(vm_name, new_domid): |
| logfilename = "/var/run/cloud/" + vm_name +".log" |
| if not os.path.exists(logfilename): |
| return |
| lines = (line.rstrip() for line in open(logfilename)) |
| |
| [_vmName,_vmID,_vmIP,_domID,_signature,_seqno] = ['_', '-1', '_', '-1', '_', '-1'] |
| for line in lines: |
| [_vmName,_vmID,_vmIP,_domID,_signature,_seqno] = line.split(',') |
| break |
| |
| write_rule_log_for_vm(_vmName, _vmID, '0.0.0.0', new_domid, _signature, '-1') |
| |
| def get_rule_log_for_vm(session, vmName): |
| vm_name = vmName; |
| logfilename = "/var/run/cloud/" + vm_name +".log" |
| if not os.path.exists(logfilename): |
| return '' |
| |
| lines = (line.rstrip() for line in open(logfilename)) |
| |
| [_vmName,_vmID,_vmIP,_domID,_signature,_seqno] = ['_', '-1', '_', '-1', '_', '-1'] |
| for line in lines: |
| [_vmName,_vmID,_vmIP,_domID,_signature,_seqno] = line.split(',') |
| break |
| |
| return ','.join([_vmName, _vmID, _vmIP, _domID, _signature, _seqno]) |
| |
| @echo |
| def get_rule_logs_for_vms(session, args): |
| host_uuid = args.pop('host_uuid') |
| try: |
| thishost = session.xenapi.host.get_by_uuid(host_uuid) |
| hostrec = session.xenapi.host.get_record(thishost) |
| vms = hostrec.get('resident_VMs') |
| except: |
| util.SMlog("Failed to get host from uuid " + host_uuid) |
| return ' ' |
| |
| result = [] |
| try: |
| for name in [session.xenapi.VM.get_name_label(x) for x in vms]: |
| if 1 not in [ name.startswith(c) for c in ['r-', 's-', 'v-', 'i-'] ]: |
| continue |
| network_rules_for_rebooted_vm(session, name) |
| if name.startswith('i-'): |
| log = get_rule_log_for_vm(session, name) |
| result.append(log) |
| except: |
| util.SMlog("Failed to get rule logs, better luck next time!") |
| |
| return ";".join(result) |
| |
| @echo |
| def cleanup_rules_for_dead_vms(session): |
| try: |
| vms = session.xenapi.VM.get_all() |
| cleaned = 0 |
| for vm_name in [session.xenapi.VM.get_name_label(x) for x in vms]: |
| if 1 in [ vm_name.startswith(c) for c in ['r-', 'i-', 's-', 'v-'] ]: |
| vm = session.xenapi.VM.get_by_name_label(vm_name) |
| if len(vm) != 1: |
| continue |
| vm_rec = session.xenapi.VM.get_record(vm[0]) |
| state = vm_rec.get('power_state') |
| if state != 'Running' and state != 'Paused': |
| util.SMlog("vm " + vm_name + " is not running, cleaning up") |
| destroy_network_rules_for_vm(session, {'vmName':vm_name}) |
| cleaned = cleaned+1 |
| |
| util.SMlog("Cleaned up rules for " + str(cleaned) + " vms") |
| except: |
| util.SMlog("Failed to cleanup rules for dead vms!") |
| |
| |
| @echo |
| def cleanup_rules(session, args): |
| instance = args.get('instance') |
| if not instance: |
| instance = 'VM' |
| |
| try: |
| chainscmd = "iptables-save | grep '^:' | awk '{print $1}' | cut -d':' -f2 | sed 's/-def/-%s/'|sort|uniq" % instance |
| chains = util.pread2(['/bin/bash', '-c', chainscmd]).split('\n') |
| cleaned = 0 |
| cleanup = [] |
| for chain in chains: |
| if 1 in [ chain.startswith(c) for c in ['r-', 'i-', 's-', 'v-'] ]: |
| vm = session.xenapi.VM.get_by_name_label(vm_name) |
| if len(vm) != 1: |
| util.SMlog("chain " + chain + " does not correspond to a vm, cleaning up") |
| cleanup.append(vm_name) |
| continue |
| vm_rec = session.xenapi.VM.get_record(vm[0]) |
| state = vm_rec.get('power_state') |
| if state != 'Running' and state != 'Paused': |
| util.SMlog("vm " + vm_name + " is not running, cleaning up") |
| cleanup.append(vm_name) |
| |
| for vm_name in cleanup: |
| destroy_network_rules_for_vm(session, {'vmName':vm_name}) |
| |
| util.SMlog("Cleaned up rules for " + str(len(cleanup)) + " chains") |
| return str(len(cleanup)) |
| except: |
| util.SMlog("Failed to cleanup rules !") |
| return '-1'; |
| |
| @echo |
| def check_rule_log_for_vm(vmName, vmID, vmIP, domID, signature, seqno): |
| vm_name = vmName; |
| logfilename = "/var/run/cloud/" + vm_name +".log" |
| if not os.path.exists(logfilename): |
| return [True, True, True, True, True, True] |
| |
| lines = (line.rstrip() for line in open(logfilename)) |
| |
| [_vmName,_vmID,_vmIP,_domID,_signature,_seqno] = ['_', '-1', '_', '-1', '_', '-1'] |
| try: |
| for line in lines: |
| [_vmName,_vmID,_vmIP,_domID,_signature,_seqno] = line.split(',') |
| break |
| except: |
| util.SMlog("Failed to parse log file for vm " + vm_name) |
| remove_rule_log_for_vm(vm_name) |
| return False |
| |
| return [(vm_name != _vmName), \ |
| (vmID != _vmID), \ |
| (vmIP != _vmIP), \ |
| (domID != _domID), \ |
| (signature != _signature), \ |
| (seqno != _seqno)] |
| |
| |
| @echo |
| def write_rule_log_for_vm(vmName, vmID, vmIP, domID, signature, seqno): |
| vm_name = vmName |
| logfilename = "/var/run/cloud/" + vm_name +".log" |
| util.SMlog("Writing log to " + logfilename) |
| logf = open(logfilename, 'w') |
| output = ','.join([vmName, vmID, vmIP, domID, signature, seqno]) |
| result = True |
| try: |
| logf.write(output) |
| logf.write('\n') |
| except: |
| util.SMlog("Failed to write to rule log file " + logfilename) |
| result = False |
| |
| logf.close() |
| |
| return result |
| |
| @echo |
| def remove_rule_log_for_vm(vmName): |
| vm_name = vmName |
| logfilename = "/var/run/cloud/" + vm_name +".log" |
| |
| result = True |
| try: |
| os.remove(logfilename) |
| except: |
| util.SMlog("Failed to delete rule log file " + logfilename) |
| result = False |
| |
| return result |
| |
| @echo |
| def network_rules(session, args): |
| try: |
| vm_name = args.get('vmName') |
| vm_ip = args.get('vmIP') |
| vm_id = args.get('vmID') |
| signature = args.pop('signature') |
| seqno = args.pop('seqno') |
| try: |
| vm = session.xenapi.VM.get_by_name_label(vm_name) |
| if len(vm) != 1: |
| util.SMlog("### Could not get record for vm ## " + vm_name) |
| return 'false' |
| vm_rec = session.xenapi.VM.get_record(vm[0]) |
| domid = vm_rec.get('domid') |
| except: |
| util.SMlog("### Failed to get domid for vm ## " + vm_name) |
| return 'false' |
| if domid == '-1': |
| util.SMlog("### Failed to get domid for vm (-1): " + vm_name) |
| return 'false' |
| |
| vif = "vif" + domid + ".0" |
| tap = "tap" + domid + ".0" |
| vifs = [vif] |
| try: |
| util.pread2(['ifconfig', tap]) |
| vifs.append(tap) |
| except: |
| pass |
| |
| vmchain = chain_name(vm_name) |
| |
| changes = check_rule_log_for_vm (vm_name, vm_id, vm_ip, domid, signature, seqno) |
| |
| if not 1 in changes: |
| util.SMlog("Rules already programmed for vm " + vm_name) |
| return 'true' |
| |
| if changes[1] or changes[2] or changes[3]: |
| util.SMlog("Change detected in vmId or vmIp or domId, resetting default rules") |
| default_network_rules(session, args) |
| |
| rules = args.pop('rules') |
| lines = rules.split(' ') |
| |
| util.SMlog(" programming network rules for IP: " + vm_ip + " vmname=" + vm_name) |
| util.pread2(['iptables', '-F', vmchain]) |
| |
| for line in lines: |
| tokens = line.split(':') |
| if len(tokens) != 4: |
| continue |
| protocol = tokens[0] |
| start = tokens[1] |
| end = tokens[2] |
| cidrs = tokens.pop(); |
| ips = cidrs.split(",") |
| ips.pop() |
| allow_any = False |
| if '0.0.0.0/0' in ips: |
| i = ips.index('0.0.0.0/0') |
| del ips[i] |
| allow_any = True |
| range = start + ":" + end |
| if ips: |
| ipsetname = vmchain + "_" + protocol + "_" + start + "_" + end |
| if start == "-1": |
| ipsetname = vmchain + "_" + protocol + "_any" |
| |
| if ipset(ipsetname, protocol, start, end, ips) == False: |
| util.SMlog(" failed to create ipset for rule " + str(tokens)) |
| |
| if protocol == 'all': |
| iptables = ['iptables', '-I', vmchain, '-m', 'state', '--state', 'NEW', '-m', 'set', '--match-set', ipsetname, 'src', '-j', 'ACCEPT'] |
| elif protocol != 'icmp': |
| iptables = ['iptables', '-I', vmchain, '-p', protocol, '-m', protocol, '--dport', range, '-m', 'state', '--state', 'NEW', '-m', 'set', '--match-set', ipsetname, 'src', '-j', 'ACCEPT'] |
| else: |
| range = start + "/" + end |
| if start == "-1": |
| range = "any" |
| iptables = ['iptables', '-I', vmchain, '-p', 'icmp', '--icmp-type', range, '-m', 'set', '--match-set', ipsetname, 'src', '-j', 'ACCEPT'] |
| util.pread2(iptables) |
| util.SMlog(iptables) |
| |
| if allow_any and protocol != 'all': |
| if protocol != 'icmp': |
| iptables = ['iptables', '-I', vmchain, '-p', protocol, '-m', protocol, '--dport', range, '-m', 'state', '--state', 'NEW', '-j', 'ACCEPT'] |
| else: |
| range = start + "/" + end |
| if start == "-1": |
| range = "any" |
| iptables = ['iptables', '-I', vmchain, '-p', 'icmp', '--icmp-type', range, '-j', 'ACCEPT'] |
| util.pread2(iptables) |
| util.SMlog(iptables) |
| |
| util.pread2(['iptables', '-A', vmchain, '-j', 'DROP']) |
| |
| if write_rule_log_for_vm(vm_name, vm_id, vm_ip, domid, signature, seqno) == False: |
| return 'false' |
| |
| return 'true' |
| except: |
| util.SMlog("Failed to network rule !") |
| |
| |
| |
| if __name__ == "__main__": |
| XenAPIPlugin.dispatch({"pingtest": pingtest, "setup_iscsi":setup_iscsi, "gethostvmstats": gethostvmstats, "getvncport": getvncport, "getgateway": getgateway, "preparemigration": preparemigration, "setIptables": setIptables, "pingdomr": pingdomr, "pingxenserver": pingxenserver, "ipassoc": ipassoc, "vm_data": vm_data, "savePassword": savePassword, "saveDhcpEntry": saveDhcpEntry, "setFirewallRule": setFirewallRule, "setLoadBalancerRule": setLoadBalancerRule, "createFile": createFile, "deleteFile": deleteFile, "networkUsage": networkUsage, "network_rules":network_rules, "can_bridge_firewall":can_bridge_firewall, "default_network_rules":default_network_rules, "destroy_network_rules_for_vm":destroy_network_rules_for_vm, "default_network_rules_systemvm":default_network_rules_systemvm, "get_rule_logs_for_vms":get_rule_logs_for_vms, "setLinkLocalIP":setLinkLocalIP, "lt2p_vpn":lt2p_vpn, "cleanup_rules":cleanup_rules}) |
| |
