Horrible Support
March 1, 2009 Posted in Misc
After yesterday’s server problem, I realized how ‘horrible’ a support can be, it’s beyond my imagination. Read More
Another Network Problem
March 1, 2009 Posted in Networking
Today I found some sites on my server didn’t respond, but I couldn’t find anything wrong with the server. Apache logs showed that these websites hadn’t got any visits since 16 hours ago. Read More
Network Outage
February 2, 2009 Posted in Misc
My ISP had a network outage yesterday, which caused a few hours sluggish time…very hard to connect. I signed up despite of many bad reviews on my ISP on WHT, mainly about the network and support. But if it’s bad, it’s bad, I’m not luckier than anyone else. A long history in the industry doesn’t mean anything!! Read More
MAD
January 21, 2009 Posted in FreeBSD General
I found I couldn’t access my server, at first I thought it was a network or power outage of my ISP. Opened a support ticket and a reboot brought it back, it turned out to be my server’s problem, checked the system logs, there is absolutely nothing between the reboot and my last login. It seems that the server simply stopped to accept any connections for whatever reasons. Read More
MySQL Optimization
January 20, 2009 Posted in MySQL
I only optimized MySQl on a VPS several years ago, it seems that my server never had to. I was just aware of those my.cnf examples coming along with the installation.
There are 5 example files under /usr/local/share/mysql/:
my-huge.cnf
my-large.cnf
my-medium.cnf
my-small.cnf
my-innodb-heavy-4G.cnf
Read More
Easy Bind Configuration
January 20, 2009 Posted in DNS
Bind configuration has never been easier, I installed bind 9.6, only commented the following line in /etc/named/named.conf.
listen-on { 127.0.0.1; };
Then I added my zone files and it’s ready. Although I’m still seeing the message “the working directory is not writable“, moreover, not only # rndc reload causes this message, but also # /etc/rc.d/named start.
Add additional IPs
January 20, 2009 Posted in Networking
I made some mistakes when adding additional IPs for my new server and was locked out twice. Here are some tips to avoid those errors.
Read More
Signal 11 revisited
January 19, 2009 Posted in FreeBSD General
Just after I moved to a new server, I saw the familiar signal 11 messages again: Read More
SSH Copy
January 19, 2009 Posted in Command & Utility
Copy a local file to remote host with ssh port 123
# scp -P 123 /backup/localefile username@remotehost.com:/backup/
Copy file from remote host
# scp -P 123 username@remotehost.com:/backup/remotefile /backup/
Another Hack on Third-party Script
November 22, 2008 Posted in Security
PHPClassifieds 7.5 has a SQL injection vulnerability, the detailed how-to was posted publicly, which caused many classifieds websites hacked. The fix is here. Read More
Unix Shells by Example
November 1, 2008 Posted in Misc
Today I started reading UNIX Shells by Example, I have to say this is a great book, at least for beginners like me. Get your copy if you are really serious about FreeBSD. Sooner or later, you will find it is very helpful to write your own scripts. Shell is very powerful and flexible, a tedious task could be easily done with a simple script.
vi Commands
October 31, 2008 Posted in Command & Utility
Condensed version for my own reference, only those commands I didn’t use but will make life easier. Read More
Install via Port
October 30, 2008 Posted in Ports
A visitor followed a post to install AwStats, this post is three years old, it’s absolutely not recommended. Ports are changing very quickly. Even if the program itself doesn’t change much, the post-installation configuration has very probably changed many times. Read More
Email Blocked by BellSouth
October 29, 2008 Posted in Email
Emails on my Linux VPS were blocked by Bellsouth.net. Since they blocked the email by IP, I can still send email manually as I use Google App to handle the email. Read More
Locked File
October 28, 2008 Posted in FreeBSD General
Putty lost connection when I was viewing a file with vi. Later I tried to edit the same file, vi always told me it was read-only. Really confused until I checked with ps command and killed the vi process.