Server

Alright... So APC has been pretty unstable for me on 2 separate servers running PHP 5.3.x and PHP 5.4.x. So I figured I'd give XCache a try after reading about similar problems with APC.

Anyhow...

Here's how to install XCache 3.X from source on CentOS

Get the latest version of XCache from here: http://xcache.lighttpd.net/#Downloads

Latest version at the time of this writing is XCache 3.0.1

If your disk is starting to run out of space due to an excess of mysql-bin.XXXXXXXX files here's what to do to fix that.

vi /etc/my.cnf

under 'log-bin=mysql-bin' (the destination could be different in your my.cnf) put:

expire_logs_days = 10

Change 10 to whatever you're comfortable with.

or you can simply disable the binary log files by uncommenting the line:

So, you're worried about accidentally wiping out your entire system or important directory by doing something like  rm -rf / or  rm -rf *

with safe-rm , it won't allow you to do that, you'll get something like:

$ rm -rf /
Skipping /

Here's how to install:

cd /usr/local/src
# get latest version here: http://www.safe-rm.org.nz/
wget http://launchpad.net/safe-rm/trunk/0.8/+download/safe-rm-0.8.tar.gz
tar xvfz safe-rm-0.8.tar.gz
cd safe-rm-0.8
# find out your $PATH; 
echo $PATH # most systems should include /usr/local/bin, if not then select any other listed
cp /bin/rm /usr/local/bin/rm
mv /bin/rm /bin/rm-01
cp safe-rm /bin/rm
vi /etc/safe-rm.conf

If something refuses to run, try:

chattr -R -suSiadAc /usr/sbin

Example: if dovecot doesn't run or install/upgrade, try doing...

whoami
lsattr /usr/sbin/dovecot


-Add all your ips in directadmin under "IP management"
(and assign 2 ips to admin)
http://xx.xxx.xxx.xxx:2222/CMD_IP_MANAGER

-Register nameserver at registrar
(namecheap.com is my fav; networksolution.com is the worst for this... it's not longer an option you can click on the website, you have to send an email request for this)

-Add nameservers to server:
1. go to user level, and add the new domain you registered (leave default settings, and tweak them after)
2. go back to reseller level, and click "nameserver" and select 2 ips you want to use and click "create" then set the 2 new nameservers for "Set the Nameservers that will be assigned to new users" (it should be added by default)

-Share nameserver ips (so you're able to add other domains to them):

1. IP
/etc/sysconfig/network-scripts/ifcfg-eth0

2. DNS
/etc/resolv.conf
/etc/hosts

3. Router
/etc/sysconfig/network

4. Restart the network
/etc/rc.d/init.d/network restart

Here's how we do it on RHEL:

Logged in as root:

* Create file at /etc/cron.hourly/clockset
* with these two lines only:

rdate -s time-a.nist.gov > /dev/null
hwclock --systohc > /dev/null