sudo: unable to resolve host
sudo: unable to resolve host yourhostname
No clue why sudo is doing that when running.
Solution
Check /etc/hosts
You will probably find that it doesn't contain "yourhostname" for 127.0.0.1
Just update the hostname or add a field for your hostname like this:
127.0.0.1 yourhostname
........
Linux How To Clone One System Harddrive to another remote system
The easiest way is to use SSHand DD or a combination of netcat. SSHwill be a little slower due to encryption but is the most secure way (on two older systems the average clone speed is about 40-50MB/s). This is also OS independent as it doesn't matter what the source OS is because you are literallly cloning the drive so you retain the partition table and settings.
Clone HDD using SSH and DD........
Centos 7 How To Change Hostname
Some guides still use the old Centos 6 style (do not use /etc/sysconfig/network).
In Centos 7 the file is /etc/hostname
echo "HOSTNAME=yourhostname.com" > /etc/hostname........
CPanel Log File Locations for access_log,error_log, mysql
All Errors (CPanel does not report by domain, but puts everything in a single log which Ithink is a bit silly and annoying):
/usr/local/apache/logs/error_log
Access_Logs
They are found within the home directory of the site user eg.:
/home/admin/access-logs/yoursite.com
MySQL Logs
/var/lib/mysql/yourhostname.err........
Directadmin Solution "This is e-mail notification to warn you that your hostname is setup improperly on your system."
This is e-mail notification to warn you that your hostname is setup improperly on your system.
This is an annoying message and bug with Directadmin, my hostname is set correctly, why does it complain?
To get of this message just run this command:
/usr/local/directadmin/scripts/hostname.sh yourhostname.com........