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我munin昨天已经配置为从另一台服务器获取日志，并且还根据配置示例Totals为两个服务器负载进行了自定义配置。

我曾经rrdtool将rrd文件转换为xml并复制它们并将它们转换回rrd新机器以恢复它的历史。

现在它工作得很好，但一段时间后总数似乎停止了生成。我检查了日志，它说 load2-day.png ... 等文件没有找到。

我查了一下，他们在那里，chown并且chmod匹配munin。

关于为什么它可能看不到文件的任何想法，一旦我看到它们，我如何强制重新生成完整的图形，这样我就不必等待 5 分钟来确定它是否有效？

在此处完成日志：

这些perl错误似乎不会影响任何事情，尽管我希望能得到删除它的提示。

2013/09/10 13:45:10 Starting munin-graph
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value in subroutine entry at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 758.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 775.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 784.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 786.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 787.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value in subroutine entry at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 758.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 775.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 784.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 786.
2013/09/10 13:45:10 [PERL WARNING] Use of uninitialized value $filename in concatenation (.) or string at /usr/share/perl5/vendor_perl/Munin/Master/GraphOld.pm line 787.
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load2-month.png : opening '': No such file or directory
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load2-week.png : opening '': No such file or directory
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load2-day.png : opening '': No such file or directory
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load2-year.png : opening '': No such file or directory
2013/09/10 13:45:10 [INFO] Graphed service example.com;Totals:load2 (0.05 sec)
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load3-month.png : opening '': No such file or directory
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load3-week.png : opening '': No such file or directory
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load3-day.png : opening '': No such file or directory
2013/09/10 13:45:10 [RRD ERROR] Unable to graph /var/www/html/munin/example.com/Totals/load3-year.png : opening '': No such file or directory
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RRD ERROR 行表示无法创建图形 (png)，因为 RRD 中的某些内容无法找到（或打开）某些文件。这个片段是说它试图打开一个空白路径，但失败了。

opening '': No such file or directory

perl 错误提到了“未初始化的值 $filename”，鉴于 RRD 错误可能是问题的一部分。由于图表是根据 RRD 文件生成的，因此可能的问题是系统找不到您的 RRD。因此，您需要检查有关指定 RRD 位置的所有内容是否有序。

  • 确认 munin.conf 中的 dbdir 指令正确
  • 确认您的 RRD 存在于 $dbdir/domain/ 路径中
  • 确认文件系统权限允许 munin 进程读取和写入所述路径
  • 确认主机树（在 munin.conf 中）对于您遇到问题的客户端是正确的

关于触发图创建： munin 服务器由 cron 驱动。您应该能够找到一个可以以 munin 用户身份手动运行的 cron 作业以触发该过程。我过去使用的 RPM 在 /etc/cron.d/munin 有这个工作

于 2013-09-29T23:32:20.707 回答