Troubleshooting

Fix rpmdb: Thread died in Berkeley DB library

If you are encountering this issue when using yum / dnf / rpm :

rpmdb: Thread/process 277623/140429100390144 failed: Thread died in Berkeley DB library
error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery
error: cannot open Packages index using db3 -  (-30974)
error: cannot open Packages database in /var/lib/rpm
CRITICAL:yum.verbose.cli.yumcompletets:Yum Error: Error: rpmdb open failed

Follow the steps below :

mkdir /var/lib/rpm/backup 
cp -a /var/lib/rpm/__db* /var/lib/rpm/backup/ 
rm -f /var/lib/rpm/__db.[0-9][0-9]* 
rpm --quiet -qa 
rpm --rebuilddb 
yum clean all

If the issue reoccurs, please follow the article : https://access.redhat.com/solutions/3330211.

Failed to load SELinux policy, freezing

https://access.redhat.com/support/cases/#/case/02758766.

**Press “e” at the boot screen to edit the startup parameters.
**HModify the line that starts with “linux16” and append “selinux=0” to the end
**HPress “ctrl+x” to boot.

systemctl stop isectpd.service
yum reinstall selinux-policy\*

yum update setup

touch /.autorelabel

init 6

Force fsck

https://access.redhat.com/solutions/1582803 https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/managing_monitoring_and_updating_the_kernel/configuring-kernel-command-line-parameters_managing-monitoring-and-updating-the-kernel#doc-wrapper

grubby --update-kernel=ALL --args="fsck.mode=force"
grubby --update-kernel=ALL --args="fsck.repair=yes"
# Check variable

cat /boot/grub2/grubenv

grub2-mkconfig -o /etc/grub2.cfg

awk '$6 == 0 && $3 ~ /xfs|ext4/ { print "puppet resource mount "$1" pass=1"  }' /etc/fstab


perl -i -ape 's/(\d)(\s+\d\s*)$/1$2/g' /etc/fstab 
reboot

Propagate ACL

FILE=myfile
getfacl -R $FILE > /tmp/acl-before-$(basename $FILE).out
getfacl $FILE  | setfacl -R  --set-file=-  --test   $FILE
getfacl $FILE  | setfacl -R  --set-file=-    $FILE
getfacl -R $FILE | tee  /tmp/acl-after-$(basename $FILE).out