生产环境：
操作系统：CentOS release 6.8 (Final)
数据库：mysql 5.5.49-cll-lve
问题：在众多Cacti监控的对象中，由于增加一台服务器增加了一个了监控对象Windows系统，导致cacti在监控所有对象中仅有1个对象出图出数据。
分析：
1.图像没有生成，运行# /usr/bin/php /var/www/html/cacti/poller.php --force #出现数据了吗？
2.权限问题，修改权限#chmod 777 -R /var/www/html/cacti/rra #没有权限吗？
3.数据库表有损坏。#需要修复数据库吗？
4.重新启动snmp服务。
5.使用snmpwalk 获取各种信息。
出现问题之后，我们要通过检查错误日志来分析问题所在。
[root@sky9896 log]# sz cacti.log #下载日志分析
rz
zmodem trl+C
100% 1211481 KB 6478 KB/s 00:03:07 0 Errorss
[root@sky9896 log]# tail -n 200 cacti.log #查看文本文件末尾n行，请查看附件代码
09/07/2016 03:53:02 PM - CMDPHP: Poller[0] Host[2] DS[15] WARNING: Result from SERVER not valid. Partial Result: U
09/07/2016 03:53:02 PM - CMDPHP: Poller[0] Host[2] DS[12] WARNING: Result from SERVER not valid. Partial Result: U
……………………….
[root@sky9896 ~]# mysqlcheck --auto-repair --databases cacti -p
Enter password:
cacti.cdef OK
cacti.cdef_items OK
cacti.colors OK
cacti.data_input OK
cacti.data_input_data
warning : 2 clients are using or haven't closed the table properly
status : OK
cacti.data_input_fields OK
cacti.data_local
warning : 2 clients are using or haven't closed the table properly
status : OK
cacti.data_template OK
cacti.data_template_data
warning : 3 clients are using or haven't closed the table properly
status : OK
cacti.data_template_data_rra
warning : 2 clients are using or haven't closed the table properly
status : OK
cacti.data_template_rrd
warning : 2 clients are using or haven't closed the table properly
status : OK
cacti.graph_local
warning : 2 clients are using or haven't closed the table properly
status : OK
cacti.graph_template_input OK
cacti.graph_template_input_defs
warning : 1 client is using or hasn't closed the table properly
status : OK
cacti.graph_templates OK
cacti.graph_templates_gprint OK
cacti.graph_templates_graph
warning : 2 clients are using or haven't closed the table properly
status : OK
cacti.graph_templates_item
warning : 2 clients are using or haven't closed the table properly
status : OK
cacti.graph_tree OK
cacti.graph_tree_items OK
cacti.host
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.host_graph OK
cacti.host_snmp_cache
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.host_snmp_query OK
cacti.host_template OK
cacti.host_template_graph
warning : 1 client is using or hasn't closed the table properly
status : OK
cacti.host_template_snmp_query OK
cacti.plugin_config OK
cacti.plugin_db_changes OK
cacti.plugin_discover_hosts
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.plugin_discover_template OK
cacti.plugin_hooks OK
cacti.plugin_notification_lists OK
cacti.plugin_realms OK
cacti.plugin_thold_contacts OK
cacti.plugin_thold_host_failed OK
cacti.plugin_thold_log
warning : 5 clients are using or haven't closed the table properly
status : OK
cacti.plugin_thold_template_contact OK
cacti.plugin_thold_threshold_contact OK
cacti.poller OK
cacti.poller_command
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.poller_item
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.poller_output OK
cacti.poller_output_rt
warning : 3 clients are using or haven't closed the table properly
status : OK
cacti.poller_reindex
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.poller_time OK
cacti.rra OK
cacti.rra_cf OK
cacti.settings
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.settings_graphs OK
cacti.settings_tree OK
cacti.snmp_query OK
cacti.snmp_query_graph OK
cacti.snmp_query_graph_rrd OK
cacti.snmp_query_graph_rrd_sv OK
cacti.snmp_query_graph_sv OK
cacti.syslog OK
cacti.syslog_alert OK
cacti.syslog_facilities OK
cacti.syslog_host_facilities OK
cacti.syslog_hosts OK
cacti.syslog_incoming OK
cacti.syslog_logs OK
cacti.syslog_priorities OK
cacti.syslog_remove OK
cacti.syslog_removed OK
cacti.syslog_reports OK
cacti.syslog_statistics OK
cacti.test OK
cacti.thold_data
warning : 6 clients are using or haven't closed the table properly
status : OK
cacti.thold_template OK
cacti.user_auth OK
cacti.user_auth_perms OK
cacti.user_auth_realm OK
cacti.user_log
warning : 4 clients are using or haven't closed the table properly
status : OK
cacti.version
[root@sky9896 /]# mysqlcheck --auto-repair --database cacti -p #修复数据库
Warning: Using unique option prefix database instead of databases is deprecated and will be removed in a future release. Please use the full name instead.
Enter password:
cacti.cdef OK
cacti.cdef_items OK
cacti.colors OK
cacti.data_input OK
cacti.data_input_data OK
cacti.data_input_fields OK
cacti.data_local OK
cacti.data_template OK
cacti.data_template_data OK
cacti.data_template_data_rra OK
cacti.data_template_rrd OK
cacti.graph_local OK
cacti.graph_template_input OK
cacti.graph_template_input_defs OK
cacti.graph_templates OK
cacti.graph_templates_gprint OK
cacti.graph_templates_graph OK
cacti.graph_templates_item OK
cacti.graph_tree OK
cacti.graph_tree_items OK
cacti.host OK
cacti.host_graph OK
cacti.host_snmp_cache OK
cacti.host_snmp_query OK
cacti.host_template OK
cacti.host_template_graph OK
cacti.host_template_snmp_query OK
cacti.plugin_config OK
cacti.plugin_db_changes OK
cacti.plugin_discover_hosts OK
cacti.plugin_discover_template OK
cacti.plugin_hooks OK
cacti.plugin_notification_lists OK
cacti.plugin_realms OK
cacti.plugin_thold_contacts OK
cacti.plugin_thold_host_failed OK
cacti.plugin_thold_log OK
cacti.plugin_thold_template_contact OK
cacti.plugin_thold_threshold_contact OK
cacti.poller OK
cacti.poller_command OK
cacti.poller_item OK
cacti.poller_output OK
cacti.poller_output_rt OK
cacti.poller_reindex OK
cacti.poller_time OK
cacti.rra OK
cacti.rra_cf OK
cacti.settings OK
cacti.settings_graphs OK
cacti.settings_tree OK
cacti.snmp_query OK
cacti.snmp_query_graph OK
cacti.snmp_query_graph_rrd OK
cacti.snmp_query_graph_rrd_sv OK
cacti.snmp_query_graph_sv OK
cacti.syslog OK
cacti.syslog_alert OK
cacti.syslog_facilities OK
cacti.syslog_host_facilities OK
cacti.syslog_hosts OK
cacti.syslog_incoming OK
cacti.syslog_logs OK
cacti.syslog_priorities OK
cacti.syslog_remove OK
cacti.syslog_removed OK
cacti.syslog_reports OK
cacti.syslog_statistics OK
cacti.test OK
cacti.thold_data OK
cacti.thold_template OK
cacti.user_auth OK
cacti.user_auth_perms OK
cacti.user_auth_realm OK
cacti.user_log OK
cacti.version OK
[root@sky9896 /]# /usr/bin/php /var/www/html/cacti/poller.php --force #生成对象
09/07/2016 06:03:56 PM - SYSTEM STATS: Time:0.4219 Method:cmd.php Processes:4 Threads:N/A Hosts:10 HostsPerProcess:3 DataSources:0 RRDsProcessed:0
[root@sky9896 /]# chmod 777 -R rra #设置权限
[root@sky9896 /]# service snmpd restart #重新启动服务
[root@sky9896 /]# snmpwalk -v 2c 117.40.***.* -c public #收集各种信息
此次增加cacti对象导致两个问题，一个是导致数据库发生错误，另一个是snmp运行服务的问题。
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