Error Code:
# tmux new -s 1
error creating /tmp/tmux-0 (Permission denied)Solution:
# chown root:root /tmp/tmux-0[DEBUG] Linux resolve df command error ‘df: cannot read table of mounted file systems: Permission denied’
Error Code:
> df -h
df: cannot read table of mounted file systems: Permission deniedAnalysis:
If we are in this situation, after we use top command, we can see follow promotion
> top
Error, do this: mount -t proc proc /procSolution:
# mount -t proc proc /proc[DEBUG] Linux resolve error ‘chmod: changing permissions of ‘resolv.conf’: Operation not permitted’
Error Code:
# chmod 644 resolv.conf
chmod: changing permissions of 'resolv.conf': Operation not permittedAnalysis:
This file is locked by chattr commandSolution:
Step One: Cancel the lock
# chattr -i /etc/resolv.confStep Two: Change the file’s privilege
# chmod 644 resolv.confStep Three: Relock this file
# chattr +i /etc/resolv.conf[CONTENT] Linux common parameters of /etc/fstab file
/dev/vg/lv_var /var xfs nodev,nosuid,noexec 0 0
/dev/vg/lv_var_log /var/log xfs nodev,nosuid,noexec,x-systemd.requires-mounts-for=/var 0 0(
Add:
1) nodev parameter here means this directory can not be interpreted by devices or blocks
2) nosuid parameter here means no setuid files can be created in this directory
3) noexec parameter here means no files can be executed in this directory
4) x-systemd.requires-mounts-for=/var here parameter means /var/log directory can not be mounted until /var directory has been mounted
)
[STEP] Linux Audit Log join /var/log/message
Main Content:
Step One: Modify /audit/plugins.d/syslog.conf file
# vim /audit/plugins.d/syslog.confModify part content as follow:
Modify part content as follow:
......
active = no
......Step Two: Restart auditd Service
# service auditd restartReference:
https://access.redhat.com/solutions/637863