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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] newbie in trouble with CentOS Xen
Quoting Alexandre Kouznetsov <alk@xxxxxxxxxx>: Hello. El 03/04/13 15:38, Dave Stevens escribió:I have a server I basically inherited that has been performing well for several years but is now not working. So I have ssh access from offsite. When I log in I am in dom0. This is wrong; the unit was set up so that dom0 would have no direct internet connection quite intentionally as a security feature. There is one hosted domain, Centos 5.8 the same as dom0. Up until yesterday I got the hosted domain when I logged in. At the moment I can ssh to dom0 but when logged in can't ping out. So that's a problem. I can use xm console hostdomain to see the VM, which appears to be fine on its own but which is disconnected. I don't know enough about xen networking to know where to look, but it seems reasonable that being unable to ping out would be indicative of something, I just don't know what. Any suggestions welcome, will even RTFM if someone will point me to it.In order to make a reliable fix, you will need to get a better idea how it is supposed to work. Check this reference:http://wiki.xen.org/wiki/Xen_Networking Thanks for the reference, it seems well written and makes sense. While this, please provide some output of the current status of your system, with the output of this commands:xm list brctl show ifconfig iptables -L -v
ok, here in order:
[root@skeena ~]# xm list
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 9879 8 r----- 870.8
bulkley 1 2048 4 -b---- 3283.0
[root@skeena ~]#
[root@skeena ~]# brctl show
bridge name bridge id STP enabled interfaces
virbr0 8000.000000000000 yes
xenbr0 8000.feffffffffff no vif1.0
vif0.0
peth0
xenbr1 8000.feffffffffff no vif1.1
vif0.1
peth1
[root@skeena ~]#
[root@skeena ~]# ifconfig
eth1 Link encap:Ethernet HWaddr 00:30:48:CE:84:7F
inet addr:10.10.254.240 Bcast:10.10.254.255 Mask:255.255.255.0
inet6 addr: fe80::230:48ff:fece:847f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:81102 errors:0 dropped:0 overruns:0 frame:0
TX packets:34828 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:10772813 (10.2 MiB) TX bytes:2721383 (2.5 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:3086 errors:0 dropped:0 overruns:0 frame:0
TX packets:3086 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4816900 (4.5 MiB) TX bytes:4816900 (4.5 MiB)
peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:250 Base address:0xc000
peth1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:42346 errors:0 dropped:0 overruns:0 frame:0
TX packets:73652 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9145360 (8.7 MiB) TX bytes:5504883 (5.2 MiB)
Interrupt:251 Base address:0xe000
vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:2562 (2.5 KiB)
vif0.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:34830 errors:0 dropped:0 overruns:0 frame:0
TX packets:81102 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2721787 (2.5 MiB) TX bytes:10772813 (10.2 MiB)
vif1.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:56 (56.0 b) TX bytes:2520 (2.4 KiB)
vif1.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:38756 errors:0 dropped:0 overruns:0 frame:0
TX packets:21268 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:1085168 (1.0 MiB) TX bytes:7679247 (7.3 MiB)
virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:3077 (3.0 KiB)
xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:13 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2380 (2.3 KiB) TX bytes:0 (0.0 b)
xenbr1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:60059 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:8474417 (8.0 MiB) TX bytes:0 (0.0 b)
[root@skeena ~]#
[root@skeena ~]# iptables -L -v
Chain INPUT (policy ACCEPT 19688 packets, 3488K bytes)
pkts bytes target prot opt in out source
destination
0 0 ACCEPT udp -- virbr0 any anywhere anywhere
udp dpt:domain
0 0 ACCEPT tcp -- virbr0 any anywhere anywhere
tcp dpt:domain
0 0 ACCEPT udp -- virbr0 any anywhere anywhere
udp dpt:bootps
0 0 ACCEPT tcp -- virbr0 any anywhere anywhere
tcp dpt:bootps
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source
destination
0 0 ACCEPT all -- any virbr0 anywhere 192.168.122.0/24 state RELATED,ESTABLISHED
0 0 ACCEPT all -- virbr0 any 192.168.122.0/24 anywhere
0 0 ACCEPT all -- virbr0 virbr0 anywhere anywhere
0 0 REJECT all -- any virbr0 anywhere
anywhere reject-with icmp-port-unreachable
0 0 REJECT all -- virbr0 any anywhere
anywhere reject-with icmp-port-unreachable
0 0 ACCEPT all -- any any anywhere
anywhere PHYSDEV match --physdev-in vif1.1
0 0 ACCEPT all -- any any anywhere
anywhere PHYSDEV match --physdev-in vif1.0
Chain OUTPUT (policy ACCEPT 33423 packets, 4609K bytes)pkts bytes target prot opt in out source destination [root@skeena ~]# -- Alexandre Kouznetsov _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxx http://lists.xen.org/xen-users -- The problem with being cynical is you can't keep up! -- anon. philosopher _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxx http://lists.xen.org/xen-users
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