1. Describe your incident:
We’re Installing Graylog 6.0 in a two server configuration on a security hardened Oracle Linux 8 OS. When we start the graylog-server service, there is a warning in server.log: “Did not find udev library in operating system. Some features may not work.” even though udev is installed as part of the OS.
2. Describe your environment:
-
OS Information:
Oracle Linux 8 with security hardening applied (SELinux, firewalld) -
Package Version: (RPMs installed locally - no internet access)
graylog-server-6.0.7-1.x86_64.rpm
mongodb-org-7.0.14-1.el8.x86_64.rpm
opensearch-2.15.0-linux-x64.rpm -
Service logs, configurations, and environment variables:
cat /var/log/graylog-server/server.log | grep WARN
WARN [LinuxOperatingSystem] Did not find udev library in operating system. Some features may not work.
ls /etc/udev
hwdb.bin hwdb.d rules.d udev.conf
3. What steps have you already taken to try and solve the problem?
Set SELinux to Permissive
4. How can the community help?
How do we resolve the warning?