Yup – nagios – wonderful remote host/server monito tool. But it is little bit complex to configure. Today i got one cute freeware opensource php based host monitor that is monarch it is gui to nagios. its very easy to configure now. now you can get ready to start vmware virtual box image at vmware.com it means download file, start using free vmware player. you can monitor hunderds of hosts with very advanced options Freely.
Now iam using this nagios tool to monito my online virtual unix boxes..cool…thanks to opensource