programmers blog
I went ahead and took the plunge! Our family has a new domain!
I purchased folkes.me and setup subdomains for:
dan.folkes.me and micaela.folkes.me.
If you go to folkes.me, I just made a pretty lame looking landing page.
I debated doing danfolk.es, but I wanted micaela and all of our other children and animals to have the ability to have subdomains. So, I look forward to making a fat cat homepage at pyro.folkes.me.
😀
I setup a free account with CloudFlair too! It should increase speed and reduce server load. I need this because all of this is hosted on a free hosting account at Freehostia (I love Freehostia).
So, my server at home’s IP address is always changing. Sometimes it’s sitting there broadcasting my development server’s website to the world on an IP that I don’t know.
So, when this happens, I have to go get physical access and bring up canyouseeme.org or something like it.
There are a few solutions to this problem:
I went with the last option. You could do this in a multitude of ways. You could have your server send it’s address in an email to you periodically or on boot. You could FTP it to a free FTP server. You get the idea.
I did this:
* danfolkes.com : that keeps it’s IP. It has PHP.
* lab.danfolkes.com : that changes it’s IP.
I setup a cron job on lab.danfolkes.com to run every 8 hours and open a PHP page:
0 */8 * * * /usr/bin/curl "http://danfolkes.com/path/to/file.php" |
The page on danfolkes.com will record the last 50 IPs sent to it in a logfile:
// danfolkes.com/path/to/file.php: $file = 'log/file.txt'; $max = 50; $content = "\n<br/>" . date("Y-m-d H:i:s") . " " . $_SERVER['REMOTE_ADDR'] . ""; $filecontents = file_get_contents($file); $filecontents = $content . $filecontents; $filecontents = implode("\n<br/>", array_slice(explode("\n<br/>", $filecontents),0, $max)); echo $filecontents; file_put_contents($file, $filecontents); |
So, if my server’s IP ever changes, there will be a nice little record of the last known IPs. I can go into my DNS settings for lab.danfolkes.com and set them to the new IP.
<!-- Log File --> <br/>2013-07-30 12:56:09 24.125.92.189 <br/>2013-07-30 04:56:10 24.125.92.189 <br/>2013-07-29 20:56:21 24.125.92.189 <br/>2013-07-29 20:56:19 24.125.92.189 <br/>2013-07-29 20:56:15 24.125.92.189 <br/>2013-07-29 20:56:12 24.125.92.189 <br/>2013-07-29 20:55:48 24.125.92.189 <br/>2013-07-29 20:55:32 24.125.92.189 <br/>2013-07-29 20:50:04 24.125.92.189 |
Installing Diaspora on Ubuntu on VirtualBox
I wrote up a little howto on the Diaspora git hub:
https://github.com/diaspora/diaspora/wiki/Installing-Diaspora-on-Ubuntu-on-VirtualBox
First Install Pear, Mail, Mail Mime, Net SMTP. Restart Apache:
sudo apt-get install php-pear sudo pear install mail sudo pear install mail_mime sudo pear install Net_SMTP sudo /etc/init.d/apache2 restart |
Here is the PHP code I used to send an email:
try { require_once "Mail.php"; $from = "[email protected]"; $to = "{$email}"; $subject = "Hi!"; $body = "Hi,\n\nHow are you?"; $host = "ssl://smtp.gmail.com"; $port = "465"; $username = "[email protected]"; //This can also be a Google Apps account $password = "PASSWORD"; $headers = array ('From' => $from, 'To' => $to, 'Subject' => $subject); $smtp = Mail::factory('smtp', array ('host' => $host, 'port' => $port, 'auth' => true, 'username' => $username, 'password' => $password)); $mail = $smtp->send($to, $headers, $body); if (PEAR::isError($mail)) { echo("<p>" . $mail->getMessage() . "</p>"); } else { echo("<p>Message successfully sent!</p>"); } } catch (Exception $e) { echo 'Caught exception: ', $e->getMessage(), "\n"; } |
This is the script I use that will:
#!/bin/bash while [ true ]; do # make md5 of current file for update check. md5sum minecraft_server.jar > minecraft_server.jar.md5 wget -o updatelog.log -N --trust-server-names http://www.minecraft.net/download/minecraft_server.jar # display updated status if md5sum -c --status minecraft_server.jar.md5 then echo "Server Up to Date." else echo "Updated Server!" fi java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui rsync -a --delete --progress /home/dan/serv/minecraft/world "/home/dan/serv/minecraft/bak/world"`eval date +%Y%m%d`"" done |
Code Explained:
This will put the server in an infinite loop. You can kill it by hitting Control+C a couple times in a row.
while [ true ]; do |
This will make a hash of the current minecraft_server.jar and then download the newest copy using wget.
md5sum minecraft_server.jar > minecraft_server.jar.md5 wget -o updatelog.log -N --trust-server-names http://www.minecraft.net/download/minecraft_server.jar |
This will run minecraft in headless mode and with a limit on RAM.
java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui |
This will create a backup of the minecraft world folder in a backup folder. You probably should work on this part.
rsync -a --delete --progress /path/to/minecraft/world "/path/to/minecraft/bak/world"`eval date |
Well, hope this helps someone. Have a good day.
Install rsync and trickle:
sudo apt-get install rsync sudo apt-get install trickle |
Now you can run rsync:
This will download at a limit of 80 KB/s from host:
rsync -auvPe "trickle -d 80 ssh" user@host:/src/ /dst/ |
Explanation of Commands:
-a, --archive archive mode; equals -rlptgoD (no -H,-A,-X) -u, --update skip files that are newer on the receiver -v, --verbose increase verbosity -P --progress show progress during transfer -e, --rsh=COMMAND specify the remote shell to use trickle -d 80 = -d rate Limit the download bandwidth consumption to rate KB/s. |
This is my current setup for my two Ubuntu 10.10 (Maverick Meerkat) boxes. One shares a read/write folder to the other. This is my setup. I think the key to this is having the same username on both computers having access to the files.
You might have to run this on the the folder:
sudo chmod -R 777 /path/to/files
sudo chown -R usernameonbothcomputers:usernameonbothcomputers /path/to/files
I installed samba by doing: sudo apt-get install samba
/etc/samba/smb.conf : (on the computer serving the files)
[global] workgroup = WORKGROUP server string = %h server (Samba, Ubuntu) dns proxy = no interfaces = 127.0.0.0/8 eth0 bind interfaces only = yes log file = /var/log/samba/log.%m max log size = 1000 syslog = 0 panic action = /usr/share/samba/panic-action %d encrypt passwords = true passdb backend = tdbsam obey pam restrictions = yes unix password sync = yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . pam password change = yes guest account = nobody invalid users = root usershare allow guests = yes [MyFiles] path = /path/to/share writable = yes read only = no valid users = usernameonbothcomputers |
sudo /etc/init.d/smbd reload
/etc/fstab : (on the computer accessing the files)
//SAMBASHAREsSERVERNAME/MyFiles /path/to/mount cifs users,,noatime,username=usernameonbothcomputers,password=theuserspassword 0 0 |
You should be able to run this to mount all things in your fstab:
sudo mount -a
I pretty much use ssh for everything. I use it mostly to connect to my home/web/this server and use it as an interface. The best program to use alongside ssh is screen.
To install both ssh and screen, you may do this:
If I were good with words, I would write a poem for ssh. But alas, I am not. So, you get the first page from the Wikipedia Entry.
Secure Shell or SSH is a network protocol that allows data to be exchanged over a secure channel between two computers. Encryption provides confidentiality and integrity of data. SSH uses public-key cryptography to authenticate the remote computer and allow the remote computer to authenticate the user, if necessary.
Here are a few of the best SSH/SCP commands EVER: