Christopher Juckins

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centos_6_migration_notes

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centos_6_migration_notes [2015/02/11 07:28] juckinscentos_6_migration_notes [2016/04/10 17:46] (current) juckins
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 +==== CentOS 6 Migration Notes ====
 +
 +
 RedHat Guides:\\ RedHat Guides:\\
 http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Migration_Planning_Guide/chap-Migration_Guide-Package_Changes.html http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Migration_Planning_Guide/chap-Migration_Guide-Package_Changes.html
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 ---- ----
 +
 +**Jan 2016**
 +
 +Disable kdump by removing kdump and kexec-tools RPMs.
 +
 +----
 +
 +**Dec 2015**
 +
 +Set up VSFTPD
 +  * https://www.digitalocean.com/community/tutorials/how-to-set-up-vsftpd-on-centos-6--2
 +  * http://serverfault.com/questions/243816/vsftpd-allow-access-only-for-certain-users
 +  * https://radu.cotescu.com/vsftpd-and-symbolic-links/
 +    * Make the target directory at the location you want it as the desired user
 +    * Make the target directory in the desired user's $HOME
 +    * as root: mount --bind /real/directory /ideal/directory
 +    * restart vsftpd
 +  * Check all settings in /etc/vsftpd
  
 **July 2014:\\ 1) Kernel panic and boot failure on Dell Inspiron 6400: (VFS cannot open root device "UUID=xxxx)** **July 2014:\\ 1) Kernel panic and boot failure on Dell Inspiron 6400: (VFS cannot open root device "UUID=xxxx)**
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 When a user logs into the system, they can choose which desktop to load after they click their username but before entering their password (an icon will appear with the available desktops).  The system will remember the last-selected desktop.  When a user logs into the system, they can choose which desktop to load after they click their username but before entering their password (an icon will appear with the available desktops).  The system will remember the last-selected desktop. 
 +
 +----
 +
 +Install fail2ban https://www.digitalocean.com/community/tutorials/how-to-protect-ssh-with-fail2ban-on-centos-6
 +
 +Tail /var/log/secure to view authentication attempts.
 +
 +Looking for blocked IP addresses:
 +<code>
 +# iptables -L |grep REJE ; iptables -L |grep REJE |wc
 +</code>
 +
 +Disable email notifications so /var/log/maillog doens't keep filling up
 +
 +http://serverfault.com/questions/257439/stop-fail2ban-stop-start-notifications
centos_6_migration_notes.1423657687.txt.gz · Last modified: 2015/02/11 07:28 by juckins