CentOS

Thanks for all the replies. Something else must have become corrupt on the root file system at some point, which is either used to build the initial ramdisk or was part of the initial ramdisk's files. I performed a fresh format/reinstall of 7.4 and upgraded the kernel and the system boots fine. *shr...

Interesting. For background, is this a virtual machine or real hardware? Is there some sort of an exotic CPU or other exotic hardware involved? Real hardware, not a virtual machine. A Dell Precision T7610. When you boot the old kernel, try to regenerate the iniramfs. Most probably something is wron...

Have an existing CentOS 7.4 system which has been running fine. Was running kernel-3.10.0-693.17.1.el7.x86_64 Updated system today to kernel-3.10.0-693.21.1.el7.x86_64 Upon reboot, I received: Probing EDD (edd=off to disable)... ok uncompression error --system halted. Everything I've read online see...

What would the iptables rule be for me to redirect any DNS queries which originate on my network to resolve on external DNS servers to one of my internal DNS servers? E.g. if I have an IOT device which uses a hard-coded DNS server, how can I redirect, on my router, any queries sent to a DNS server o...

Bump.

Anyone?

For the moment, I removed the nfs-server and nfs-client conf files in /etc/gssproxy, which seems to eliminate the error... but I have no idea why it is occurring on this machine to begin with, since I do not use kerberos authentication with nfs at all anywhere.

Not sure if this belongs under networking or under security. For about 6 months I've had a series of my Centos 7 servers configured with realmd / sssd to allow user authentication against my active directory domain. This has worked exceptionally well with little problems. The past few days, a few se...

Thank you Trevor. Worked like a champ.

My /etc/sysconfig/network-scripts/ifcfg-ethXXX files are being overwritten at boot by dracut.

This problem is apparently reported on the Redhat site:

https://access.redhat.com/solutions/3017441


does anyone know what the "solution" is? Running 7.4 w/ all the latest updates applied.

temporary workaround is to add to sysctl.conf net.netfilter.nf_conntrack_helper = 1 or, to make more "permanent" echo "options nf_conntrack nf_conntrack_helper=1" >> /etc/modprobe.d/local.conf this allows iptables to make the necessary helpers automatically from the rules. Would appreciate feedback ...

another 6 hours of googling and trying random things has yielded no fruit. Things sure seem a heck of a lot different now with IPTables than years ago when I set up my firewall at work with it. Unfortunately, it seems things have changed quite a bit with the more recent kernels and most of those pos...