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Introduction
You’re receiving the following messages in your /var/log/monit.log file.
filesystem statistic error: cannot read /sys/class/block/root/stat -- No such file or directory
Fix
You just need to upgrade Monit from version 5.26 to 5.27.2
Bug #1959166 “Monit filesystem module fails on Ubuntu 20.04 on A…” : Bugs : monit package : Ubuntu
Monit is unable to read filesystem information on Ubuntu 20.04 on EC2 instances.
I get the error –
[UTC Jan 21 07:52:31] error : filesystem statistic error: cannot read /sys/class/block/root/stat — No such file or directory
This is with the latest version.
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.3 LTS
Release: 20.04
Codename: focal
# monit –version
This is Monit version 5.26.0
Built with ssl, with ipv6, with com…
Jordan Trask
With 20 years of experience in technology spanning Linux, Data Center Infrastructure, and related services and applications, Jordan consults with small, medium, and large organizations tackling technology problems and needs. With 10 years of experience in WordPress, he’s created Managing WP as a means of dumping his brain on the web.
Jordan operates LMT Solutions providing Technology Consulting Services and We Power WP for WordPress Care Plans and Support.