[root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" ssh: connect to host xentry21 port 22: No route to host [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" ssh: connect to host xentry21 port 22: No route to host [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" [root@hadoop1 hadoop-0.18.3]# bin/hadoop namenode -format first when i tried to ssh xentry21 it shows ''no route to host''.When i try this two more time it works.Why this happens?.I have 3 physcical machines and 2 virtual machines in each.And this happens randomly in any of the virtual machines. -- View this message in context: http://www.nabble.com/network-connectivity-problem-tp24387855p24387855.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> > [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" > ssh: connect to host xentry21 port 22: No route to host > [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" > ssh: connect to host xentry21 port 22: No route to host > [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" > [root@hadoop1 hadoop-0.18.3]# bin/hadoop namenode -format > > > first when i tried to ssh xentry21 it shows ''no route to host''.When itry> this two more time it works.Why this happens?.I have 3 physcicalmachines> and 2 virtual machines in each.And this happens randomly in any of the > virtual machines.That''s the sort of behaviour I would expect if you had duplicate MAC addresses or other ARP related problems. Does a ping also give you similar behaviour? When you do ''brctl showmacs <name of bridge device>'' do the MAC addresses match against the number of the port as listed by ''brctl show''? (I think port numbers are 1 based). James _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
James Harper wrote:> >> >> [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" >> ssh: connect to host xentry21 port 22: No route to host >> [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" >> ssh: connect to host xentry21 port 22: No route to host >> [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*" >> [root@hadoop1 hadoop-0.18.3]# bin/hadoop namenode -format >> >> >> first when i tried to ssh xentry21 it shows ''no route to host''.When i > try >> this two more time it works.Why this happens?.I have 3 physcical > machines >> and 2 virtual machines in each.And this happens randomly in any of the >> virtual machines. > > That''s the sort of behaviour I would expect if you had duplicate MAC > addresses or other ARP related problems. Does a ping also give you > similar behaviour? > > When you do ''brctl showmacs <name of bridge device>'' do the MAC > addresses match against the number of the port as listed by ''brctl > show''? (I think port numbers are 1 based). > > James > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > >Yes, the ping also gives the same behavior. [root@hadoop1 Documents]# brctl show macs xenbr0 bridge name bridge id STP enabled interfaces eth0 8000.001ec9cf964d no peth0 vif1.0 virbr0 8000.000000000000 no [root@hadoop1 Documents]# brctl show bridge name bridge id STP enabled interfaces eth0 8000.001ec9cf964d no peth0 vif1.0 virbr0 8000.000000000000 no -- View this message in context: http://www.nabble.com/network-connectivity-problem-tp24387855p24388828.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> [root@hadoop1 Documents]# brctl show macs xenbr0''showmacs'' is one word James _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users