生产环境：

数据库：mysql 5.5.49-cll-lve

问题：在众多Cacti监控的对象中，由于增加了监控对象nginx，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.systemutilities –>Rebuild poller cache #需要重建cache吗？
2.系统时间不准确，重新设置时间  #需要更新服务器时间吗？
3.图像没有生成，运行

# /usr/bin/php /var/www/html/cacti/poller.php --force #出现数据了吗？
4.权限问题，修改权限#chmod 777 -R /var/www/html/cacti/rra #没有权限吗？
5.crontab -e  #定时任务的问题吗？

6.数据库表有损坏。#需要修复数据库吗？

　 出现问题之后，我们要通过检查错误日志来分析问题所在，请查看附件。

通过查看cacti日志文件，发现没有加载有效数据，通过修复cacti数据库解决了出图出数据的问题。

[root@sky9896 sky]# 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 : 3 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 : 3 clients are using or haven't closed the table properly

status  : 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

warning : 3 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

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.graph_tree_items

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.host

warning : 9 clients are using or haven't closed the table properly

status  : OK

cacti.host_graph                                   OK

cacti.host_snmp_cache

warning : 9 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                          OK

cacti.host_template_snmp_query                     OK

cacti.plugin_config

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.plugin_db_changes

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.plugin_discover_hosts

warning : 5 clients are using or haven't closed the table properly

status  : OK

cacti.plugin_discover_template                     OK

cacti.plugin_hooks

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.plugin_notification_lists                    OK

cacti.plugin_realms

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.plugin_thold_contacts                        OK

cacti.plugin_thold_host_failed                     OK

cacti.plugin_thold_log

warning : 7 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 : 9 clients are using or haven't closed the table properly

status  : OK

cacti.poller_item

warning : 9 clients are using or haven't closed the table properly

status  : OK

cacti.poller_output                                OK

cacti.poller_output_rt

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.poller_reindex

warning : 9 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 : 9 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.thold_data

warning : 9 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

warning : 1 client is using or hasn't closed the table properly

status  : OK

cacti.user_log

warning : 8 clients are using or haven't closed the table properly

status  : OK

cacti.version                                      OK