Micro Maintenance - Revision history

Wcash: /* Setting up web server */

2013-05-20T06:50:44Z

Setting up web server

← Older revision		Revision as of 06:50, 20 May 2013
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	8) [http://dislocations2008.stanford.edu/ Dislocations 2008]		8) [http://dislocations2008.stanford.edu/ Dislocations 2008]

	Increase the maximum uploaded file size for the journal repository to 30 MB in /etc/php5/~~cli~~/php.ini		Increase the maximum uploaded file size for the journal repository to 30 MB in /etc/php5/apache2/php.ini

	~~upload_max_filesize~~ = 30M		post_max_size = 30M

	== Installing Unison ==		== Installing Unison ==

Wcash: /* Setting up web server */

2013-05-18T04:24:25Z

Setting up web server

← Older revision		Revision as of 04:24, 18 May 2013
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	8) [http://dislocations2008.stanford.edu/ Dislocations 2008]		8) [http://dislocations2008.stanford.edu/ Dislocations 2008]

			Increase the maximum uploaded file size for the journal repository to 30 MB in /etc/php5/cli/php.ini

			upload_max_filesize = 30M

	== Installing Unison ==		== Installing Unison ==

Caiwei: /* System Upgrade */

2013-05-14T22:29:25Z

System Upgrade

← Older revision		Revision as of 22:29, 14 May 2013
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	To be continued...		To be continued...

			== Setting up web server ==

			Micro hosts several websites that depend on MySQL databases. As a security feature each website has its own SQL user. These users need to be created on the new system.

			List of all the websites:

			1) [http://micro.stanford.edu/wiki/Main_Page wiki]
			2) Users home pages
			2) [http://micro.stanford.edu/~caiwei/CSD-Book/ Book Computer Simulations of Dislocations]
			3) [http://paradis.stanford.edu/ ParaDiS]
			4) [http://micro.stanford.edu/MDpp/ MD++]
			5) [https://micro.stanford.edu/viewvc/ ViewVC]
			6) [https://micro.stanford.edu/svn/ SVN]
			7) [https://micro.stanford.edu/journal-repository/ Journal repository]
			8) [http://dislocations2008.stanford.edu/ Dislocations 2008]


	== Installing Unison ==		== Installing Unison ==

Caiwei at 00:20, 27 April 2013

2013-04-27T00:20:51Z

← Older revision		Revision as of 00:20, 27 April 2013
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	Unison allows file synchronization across platforms. The binary executables for Windows PCs can be downloaded at [http://www.cis.upenn.edu/~bcpierce/unison/download.html here]. [http://sourceforge.net/projects/gtk-win/?source=dlp Gtk run time libraries] need to be installed on Windows PCs for Unison to run.		Unison allows file synchronization across platforms. The binary executables for Windows PCs can be downloaded at [http://www.cis.upenn.edu/~bcpierce/unison/download.html here]. [http://sourceforge.net/projects/gtk-win/?source=dlp Gtk run time libraries] need to be installed on Windows PCs for Unison to run.


			== Installing Unicode ==

			The command '''unicode''' is installed on micro using the command

			sudo apt-get install unicode

Caiwei at 01:50, 24 April 2013

2013-04-24T01:50:35Z

← Older revision		Revision as of 01:50, 24 April 2013
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			<H1 ALIGN="CENTER"><FONT SIZE="-1"></FONT>
	'''William Cash'''
			<BR>
		⚫	How to Maintain the Computer Server Micro.stanford.edu</H1>
			<DIV>

			<P ALIGN="CENTER"><STRONG>William Cash</STRONG></P>
			</DIV>
			<P ALIGN="CENTER">[[ Apr 23 ]], [[2013]]</P>
			<P>
			<BR><HR>
			<!--Table of Child-Links-->


⚫	= How to Maintain the Computer Server Micro.stanford.edu =

	== Software Updates ==		== Software Updates ==

Caiwei at 01:47, 24 April 2013

2013-04-24T01:47:11Z

← Older revision		Revision as of 01:47, 24 April 2013
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	To be continued...		To be continued...

			== Installing Unison ==

			[http://www.cis.upenn.edu/~bcpierce/unison/ Unison] is installed on micro using the command

			sudo apt-get install unison

			Currently the version 2.40 is installed.

			Unison allows file synchronization across platforms. The binary executables for Windows PCs can be downloaded at [http://www.cis.upenn.edu/~bcpierce/unison/download.html here]. [http://sourceforge.net/projects/gtk-win/?source=dlp Gtk run time libraries] need to be installed on Windows PCs for Unison to run.

Wcash at 01:13, 28 March 2013

2013-03-28T01:13:48Z

← Older revision		Revision as of 01:13, 28 March 2013
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	The following is a summary of the tasks performed in the System Upgrade on Mar 22, 2013.		The following is a summary of the tasks performed in the System Upgrade on Mar 22, 2013.

			== Prepping and Backing up the system ==
			This stage is crucial. There's a lot of irreplaceable data that you can vanish in heartbeat if you aren't prepared. Ideally you can create an additional RAID mirror of micro's hard drives. That way if something bad happens you can install the extra hard drive and rebuild the old RAID array. Creating an additional RAID mirror is somewhat complicated, but the steps are essentially:
			1) Create identical RAID partitions and format the drive with the same file system
			2) '''ADD''' the disk to RAID raid array
			3) '''Grow''' the RAID array
			4) Wait for the mirror to be built

			It's important that you not only add the drive to the RAID array, but you also grow the array to have three disks! Simply adding the drive will not create a mirror. The mirroring process on micro's 1TB drives should take over 3 hours. You can check the status using 'cat /proc/mdstat'. If it doesn't take several hours you did something wrong.

			You also need to dump all of the relevant MySQL databases so that you can restore them on the new system. You can do this using mysqldump or with phpmyadmin. Just make sure you dump them BEFORE you install the new operating system. It will save you a lot of headaches.

			It's not necessary to dump the SVN repositories because you can simply copy their entire directories, but it can't hurt.

			To be continued...

Wcash at 00:50, 28 March 2013

2013-03-28T00:50:27Z

@@ Line 1: / Line 1: @@
 '''William Cash'''
 == Software Updates ==
@@ Line 121: / Line 122: @@
   sudo vi /etc/apache2/passwd/svn-groups
-== System Upgrade ==
+= System Upgrade =
 The operating system of Micro has been updated Mar 22, 2013 by William Cash.  The upgraded system will receive updates until Apr 2017, after which the operating system is obsolete.  Another manual update will be needed at that time.

Caiwei: /* How to Maintain the Computer Server Micro.stanford.edu */

2013-03-25T21:31:25Z

How to Maintain the Computer Server Micro.stanford.edu

← Older revision		Revision as of 21:31, 25 March 2013
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	sudo apt-get upgrade		sudo apt-get upgrade

			Step 3: Checking the health of RAID array

			cat /proc/mdstat

			The output should look like the following:

			Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
			md1 : active raid1 sda2[0] sdb2[1]
			4103104 blocks super 1.2 [2/2] [UU]

			md0 : active raid1 sda1[0] sdb1[1]
			972524352 blocks super 1.2 [2/2] [UU]

			unused devices: <none>

			If the output does not look like that, then something is wrong and the issue should be addressed as soon as possible.

	== Reboot ==		== Reboot ==
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	== Disks and Backup ==		== Disks and Backup ==

	The computer's internal hard disk is configured to be RAID 1 (mirror).		The computer's internal hard disk is configured to be RAID 1 (mirror, 1TB).

	The computer has an external hard disk (RAID 1), which can be mounted by the following command.		The computer has an external hard disk (RAID 1, 750GB spread over 2 partitions), which can be mounted by the following command. (The external hard disk is really two regular internal disks in a box.)

	sudo mount /dev/sdc2 /mnt/group_backup		sudo mount /dev/sdc2 /mnt/group_backup

Caiwei at 21:25, 25 March 2013

2013-03-25T21:25:26Z

@@ Line 6: / Line 6: @@
 The computer is set up to install security updates by itself.  But regular updates need to be performed manually by the following steps.
- Step 1: login to micro
+Step 1: login to micro
-         If packages need to be updated.  There should be messages like:
+If packages need to be updated.  There should be messages like:
 packages can be updated.
- Step 2: sudo apt-get upgrade
+Step 2: Get updates and install
@@ Line 20: / Line 23: @@
 (We are trying to schedule the computer to reboot automatically every two weeks.)