Here some host example define host{ host_name hostname contact_groups 1 alias hostname.fulname address &n bsp; x.xx.xxx.xxx parents route1 use generic-host-active } define host{ host_name route1 contact_groups &n bsp; 1 address x.xx.xxx.xxx use generic-host-active } define host{ name generic-host-active register 0 notification_options d,u,r check_command check-host-alive event_handler_enabled 1 flap_detection_enabled &nbsp ; 1 notification_interval 120 notification_period full_week notifications_enabled 1 max_check_attempts &nbsp ; 4 } define command{ command_name check-host-alive command_line /usr/lib/nagios/plugins/check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 1 } So that is it . That is a few services associated to the server if necessary I can include that here . Thanks for help Saulo Silva <div class="gmail_quote">2008/5/20 Hugo van der Kooij <<a href="mailto:hvdkooij@vanderkooij.org">hvdkooij@vanderkooij.org</a>>: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 <div class="Ih2E3d"> Saulo Silva wrote: | I have a strange situation where my nagios is not recovering after some | server goes to UNREACHABLE state unless I force a recheck . </div>What service have you assigned to this host? How did you define this host? Did you read the section about host checks? Hugo. - -- <a href="mailto:hvdkooij@vanderkooij.org">hvdkooij@vanderkooij.org</a> <a href="http://hugo.vanderkooij.org/PGP/GPG" target="_blank">http://hugo.vanderkooij.org/ PGP/GPG</a>? Use: <a href="http://hugo.vanderkooij.org/0x58F19981.asc" target="_blank">http://hugo.vanderkooij.org/0x58F19981.asc</a> A: Yes. >Q: Are you sure? >>A: Because it reverses the logical flow of conversation. >>>Q: Why is top posting frowned upon? Bored? Click on <a href="http://spamornot.org/" target="_blank">http://spamornot.org/</a> and rate those images. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iD8DBQFIMt6TBvzDRVjxmYERAs8iAJkBAlgbOh7Nt5XFxAOip+H6NihoIACfc5QG zaC5IUC32ARg/h/ximdwjBY= =RBP6 -----END PGP SIGNATURE----- ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. <a href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/" target="_blank">http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>