Dear Sir,
I am using zabbix 2.0 and our client is RHEL 6.3. W have to try create template regarding file system, but not created. We have no remember what had to do actually. After 3 - 5 days i have noticed no mail is cumming.We have add one client in zabbix server ,when we have add templete "Templet OS Linux " its showing error : Error: can not update host

Created: Application "Filesystems" on "DC-ABS-BE1".
Created: Application "General" on "DC-ABS-BE1".
Created: Application "Memory" on "DC-ABS-BE1".
Created: Application "Network interfaces" on "DC-ABS-BE1".
Created: Application "OS" on "DC-ABS-BE1".
Created: Application "Performance" on "DC-ABS-BE1".
Created: Application "Processes" on "DC-ABS-BE1".
Created: Application "Security" on "DC-ABS-BE1".
Created: Application "Zabbix agent" on "DC-ABS-BE1".
Created: Discovery rule "Network interface discovery" on "DC-ABS-BE1".
Created: Discovery rule "Mounted filesystem discovery" on "DC-ABS-BE1".
Created: Item prototype "Incoming network traffic on $1" on "DC-ABS-BE1".
Created: Item prototype "Outgoing network traffic on $1" on "DC-ABS-BE1".
Created: Item prototype "Free inodes on $1 (percentage)" on "DC-ABS-BE1".
Created: Item prototype "Free disk space on $1" on "DC-ABS-BE1".
Created: Item prototype "Free disk space on $1 (percentage)" on "DC-ABS-BE1".
Created: Item prototype "Total disk space on $1" on "DC-ABS-BE1".
Created: Item prototype "Used disk space on $1" on "DC-ABS-BE1".
Created: Item "Host name of zabbix_agentd running" on "DC-ABS-BE1".
Created: Item "Agent ping" on "DC-ABS-BE1".
Created: Item "Version of zabbix_agent(d) running" on "DC-ABS-BE1".
Created: Item "biometric_DCstatus" on "DC-ABS-BE1".
Created: Item "biometric_ICstatus" on "DC-ABS-BE1".
Created: Item "biometric_MCstatus" on "DC-ABS-BE1".
Created: Item "biometric_MUstatus" on "DC-ABS-BE1".
Created: Item "Maximum number of opened files" on "DC-ABS-BE1".
Created: Item "Maximum number of processes" on "DC-ABS-BE1".
Created: Item "mysqld_ping" on "DC-ABS-BE1".
Created: Item "Number of running processes" on "DC-ABS-BE1".
Created: Item "Number of processes" on "DC-ABS-BE1".
Created: Item "rabbitmq_status" on "DC-ABS-BE1".
Created: Item "Host boot time" on "DC-ABS-BE1".
Created: Item "Interrupts per second" on "DC-ABS-BE1".
Created: Item "Processor load (15 min average per core)" on "DC-ABS-BE1".
Created: Item "Processor load (1 min average per core)" on "DC-ABS-BE1".
Created: Item "Processor load (5 min average per core)" on "DC-ABS-BE1".
Created: Item "Context switches per second" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "CPU $2 time" on "DC-ABS-BE1".
Created: Item "Host name" on "DC-ABS-BE1".
Created: Item "Host local time" on "DC-ABS-BE1".
Created: Item "Free swap space" on "DC-ABS-BE1".
Created: Item "Free swap space in %" on "DC-ABS-BE1".
Created: Item "Total swap space" on "DC-ABS-BE1".
Created: Item "System information" on "DC-ABS-BE1".
Created: Item "System uptime" on "DC-ABS-BE1".
Created: Item "Number of logged in users" on "DC-ABS-BE1".
Created: Item "tomcat_status" on "DC-ABS-BE1".
Created: Item "Checksum of $1" on "DC-ABS-BE1".
Created: Item "Percentage Memory Used" on "DC-ABS-BE1".
Created: Item "Available memory" on "DC-ABS-BE1".
Created: Item "Total memory" on "DC-ABS-BE1".
Created: Item "zookeeper_status" on "DC-ABS-BE1".
Error in query [INSERT INTO events (eventid,source,object,objectid,clock,value,acknowledged) VALUES (625365,0,0,15821,1423216317,2,0)] [Duplicate entry '625365' for key 'PRIMARY']