cacti 有图但无数据，显示nan，有日志，麻烦各位帮忙看看，多谢了！

Coolloves

系统ubuntu12.04.cacti版本是最新的0.88a好像，日志如下，请麻烦帮忙分析分析，多谢了！

08/22/2013 10:55:02 AM - POLLER: Poller[0] WARNING: Cron is out of sync with the Poller Interval!  The Poller Interval is '300' seconds, with a maximum of a '300' second Cron, but 3436908 seconds have passed since the last poll!
08/22/2013 10:55:03 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.6.10501'
08/22/2013 10:55:03 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 10:55:03 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.10.10501'
08/22/2013 10:55:03 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 10:55:03 AM - SYSTEM STATS: Time:1.3235 Method:cmd.php Processes:1 Threads:N/A Hosts:4 HostsPerProcess:4 DataSources:72 RRDsProcessed:39
08/22/2013 11:00:02 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.6.10501'
08/22/2013 11:00:02 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 11:00:02 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.10.10501'
08/22/2013 11:00:02 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 11:00:02 AM - SYSTEM STATS: Time:1.0298 Method:cmd.php Processes:1 Threads:N/A Hosts:4 HostsPerProcess:4 DataSources:72 RRDsProcessed:39
08/22/2013 11:05:03 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.6.10501'
08/22/2013 11:05:03 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 11:05:03 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.10.10501'
08/22/2013 11:05:03 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 11:05:03 AM - SYSTEM STATS: Time:1.8742 Method:cmd.php Processes:1 Threads:N/A Hosts:4 HostsPerProcess:4 DataSources:72 RRDsProcessed:39
08/22/2013 11:10:04 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.6.10501'
08/22/2013 11:10:04 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 11:10:04 AM - CMDPHP: Poller[0] WARNING: SNMP Get Timeout for Host:'XXXX', and OID:'.1.3.6.1.2.1.31.1.1.1.10.10501'
08/22/2013 11:10:04 AM - CMDPHP: Poller[0] Host[3] DS[41] WARNING: Result from SNMP not valid.  Partial Result: U
08/22/2013 11:10:04 AM - SYSTEM STATS: Time:3.0998 Method:cmd.php Processes:1 Threads:N/A Hosts:4 HostsPerProcess:4 DataSources:72 RRDsProcessed:39

Coolloves

snmpwalk可以跑出数据，log和rrd的权限也没有问题，crond/snmpd服务都正常运行中，数据库我不懂，根据网上的教材，我也按照做了，修改了，但是弄了好久就是不出图，日志好像还是和snmp有关？

chenyx

debug下看看你的那个主机.

Coolloves

回复 3# chenyx


    感谢斑竹回复，我找到问题所在了，之前添加设备，心急，我手动跑了poller，忘记切换用户了，导致权限出现了问题，我重新添加了一次图，然后切换用户跑了下poller就可以了；

我还有个问题想请教，两台机器都安装了cacti，监控同一个端口，怎么流量有出入呢？？不解，两个机器都截取同一时间段的图，发现最大值不一样，都是用64位计数的，挺奇怪的

chenyx

误差肯定会有.
那个值是个"平均"的值,你两台机器监控同一个端口,也不能保证取值的时间点是完全一样的.