Munin stopped creating html pages and graphs

Posted on Aug 23, 2023 in Misc

Last night munin stopped updating the graphs around 2:30 am. A quick check showed that the rrd files are being updated, meaning the data collection was ok. Also looking at the html and png files one could see that they were not changed since 2:30 am. Actually, this is a lesser problem, as the data was still being collected. Honestly, I hate gaps in the graphs. 😀

I tried to generate the files manually and I got the following response:

# su - munin --shell=/bin/bash -c "/usr/share/munin/munin-graph --debug"
Can't load '/usr/lib/arm-linux-gnueabihf/perl5/5.32/auto/RRDs/RRDs.so' for module RRDs: /lib/arm-linux-gnueabihf/libXrender.so.1: unsupported version 0 of Verneed record at /usr/lib/arm-linux-gnueabihf/perl-base/DynaLoader.pm line 187.
 at /usr/share/perl5/Munin/Master/GraphOld.pm line 46.
Compilation failed in require at /usr/share/perl5/Munin/Master/GraphOld.pm line 46.
BEGIN failed--compilation aborted at /usr/share/perl5/Munin/Master/GraphOld.pm line 46.
Compilation failed in require at /usr/share/munin/munin-graph line 49.
BEGIN failed--compilation aborted at /usr/share/munin/munin-graph line 49.

So I have checked libXrender.so.1, it is a symlink to libXrender.so.1.3.0:

# file /lib/arm-linux-gnueabihf/libXrender.so.1.3.0
/lib/arm-linux-gnueabihf/libXrender.so.1.3.0: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, missing section headers

# dpkg -S libXrender.so.1.3.0
libxrender1:armhf: /usr/lib/arm-linux-gnueabihf/libXrender.so.1.3.0

# apt-get install --reinstall libxrender1
Reading package lists… Done
Building dependency tree… Done
Reading state information… Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 26 not upgraded.
Need to get 29.9 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://mirror.as43289.net/raspbian/raspbian bullseye/main armhf libxrender1 armhf 1:0.9.10-1 [29.9 kB]
Fetched 29.9 kB in 2s (16.1 kB/s)
(Reading database … 115977 files and directories currently installed.)
Preparing to unpack …/libxrender1_1%3a0.9.10-1_armhf.deb …
Unpacking libxrender1:armhf (1:0.9.10-1) over (1:0.9.10-1) …
Setting up libxrender1:armhf (1:0.9.10-1) …
Processing triggers for libc-bin (2.31-13+rpt2+rpi1+deb11u5) …
Segmentation fault

The message “missing section headers” sounds strange, also the Segmentation fault at the end, so some more investigation might be needed. However, after reinstall the .so looks better:

# file /lib/arm-linux-gnueabihf/libXrender.so.1.3.0
/lib/arm-linux-gnueabihf/libXrender.so.1.3.0: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, BuildID[sha1]=24fb04ae1904cc7b7d4f2407d0e62bdedcf7af46, stripped

Unfortunately I have not saved the old libXrender.so.1.3.0 so I cannot check the difference. I wonder what happened to it. Nevertheless munin works again.