centos - 强制重新生成所有图表

Question

昨天我已经将 munin 配置为从另一台服务器获取日志，并且还根据配置示例自定义配置了两个服务器负载的 Totals。

我使用 rrdtool 将 rrd 文件转换为 xml 并将它们复制过来并将它们转换回 rrd 购买新机器以延续它的历史。

现在它运行良好，但总数似乎在一段时间后停止生成。我检查了日志，它说找不到 load2-day.png ... 等等文件。

我检查过它们在那里，chown 和 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:

perl 错误似乎没有任何影响，但我希望能得到有关删除它的提示。

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

Answer 1

RRD 错误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。此代码段表示它正在尝试打开一条空白路径，但失败了。

opening '': No such file or directory

Perl 错误提到“未初始化的值 $filename”，鉴于 RRD 错误可能是问题的一部分。由于图形是从 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按顺序进行。

• 确认 munin.conf 中的 dbdir 指令是正确的
• 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

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