Dotaz: PING SUSE 10.2

[hayabusa]

Ahoj,

 

 

resim problem resolvace ... na suse 10.2

jedna se o toto

 

dellx:/var/log # host delly
delly.aer.vzlu.local has address 192.168.2.1
dellx:/var/log #
dellx:/var/log #
dellx:/var/log #
dellx:/var/log #
dellx:/var/log #
dellx:/var/log # ping delly

ukonci timeout ...

 

resolv.conf a nsswitch.conf take ... ( client se overuje vuci ldapu)

nscd demon orig nastaveni

jeste nsstwich.conf

passwd: compat
group:  compat
hosts:  dns files
networks:       files dns
services:       files
protocols:      files
rpc:    files
ethers: files
netmasks:       files
netgroup:       files
publickey:      files
bootparams:     files
automount:      files
aliases:        files
passwd_compat:  ldap
group_compat:   ldap
 

 

kde je problem
dekuji za postrehy

 

Odpovědi

[kozzi]

a co ping na tu adresu 192.168.2.1 ten jede ok?

[hayabusa]

jedna se o lokalni subnet bez firewallu IP adresy pingu dobre pouze resovling nejede

jeste jedna vec v pripade ze pingam trbe seznam.cz tak to odpovide dobre

problemem je pouze ping po lokanilni siti 

[pasmen]

A co říká tcpdump? Zkusil bych pingat na tu IP adresu a sledovat icmp a ARP pakety.

[hayabusa]

Ahoj,

 

 

tcpdump  .....

po dlouhem timout probehne nize uvedene

dellx:~ # tcpdump -l -n -i eth0 'port 53'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes

pro info

dns server IP  192.168.2.10

klient IP 192.168.2.8

08:20:06.731140 IP 192.168.2.8.33117 > 192.168.2.10.53:  43750+ AAAA? my.dns.(34)
08:20:06.731601 IP 192.168.2.10.53 > 192.168.2.8.33117:  43750 NXDomain 0/1/0 (89)
08:20:06.731674 IP 192.168.2.8.33117 > 192.168.2.10.53:  12356+ A? my.dns. (34)
08:20:06.732049 IP 192.168.2.10.53 > 192.168.2.8.33117:  12356 NXDomain 0/1/0 (89)

 

[kozzi]

a co mas v /etc/host.conf

[hayabusa]

V /etc/hosts mam pouze startdart co je v suse localhost a primarni adresa serveru + hostname

[kozzi]

jo to je sice fajn ale ja se neptal na /etc/hosts

[hayabusa]

Promin prekoukl jsem se

je tam toto

#
order hosts, bind
#
# The following options are used by the resolver library:
#
multi on
 

[kozzi]

a co kdyz to prohodis?

#
order bind,hosts
#
# The following options are used by the resolver library:
#
multi on

[hayabusa]

Ahoj,

 

nepomuze  ....

jeste reknu ze kdyz restarttu nscd demona tal to cca 5min bezi resolvace bez problemu

potom to zase prestane bezet ...

 

[hayabusa]

dalsi poznatek client se po 20s zacne misto lokalniho  dns serveru dotazovat na DNS

224.0.0.251.mdns:

multicast adresu

co to presne  znamena ?

[kozzi]

co mas v /etc/resolv.conf

[hayabusa]

vyreseno

 

do /etc/host.conf staci pridat  mdns off