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Another How to Install MogileFS - Debian Sarge

Page history last edited by PBworks 13 years, 5 months ago

This is created from a bunch of sources. You may notice that some of it comes from the other How To. I have tested this many times and it works great!

Doug Kersten

INSTALLING MOGILEFS

If you haven't already done so add user mogilefsd:

adduser mogilefsd

mkdir /etc/mogilefs

cd /etc/mogilefs

Apt-get install subversion

svn checkout http://code.sixapart.com/svn/mogilefs/trunk/

now you have the code.

apt-get install liblinux-aio-perl

apt-get install libbsd-resource-perl

apt-get install libcompress-zlib-perl

apt-get install libnet-netmask-perl
apt-get install libio-stringy-perl
apt-get install libwww-perl

perl -MCPAN -e shell;

Answer default to all questions until you get to the location information and then choose your country and then your default ftp site.

at the > prompt do this:

install X::Y

Do this with the following:

install Danga::Socket

install DBI

Where X::Y is the name of the missing module. You may have to do this several

times.

exit

Install PerlBal

Mkdir /etc/perlbal

cd /etc/perlbal

svn checkout http://code.sixapart.com/svn/perlbal/trunk

cd /etc/perlbal/trunk

perl Makefile.PL

make
make test

make install

Install MogileFS (mogilefsd and mogstored)

cd /etc/mogilefs/trunk/server

perl Makefile.PL

make

make install

now as root

mkdir /var/mogdata/dev1

As you add more devices add more of these directories

Now for the interesting part.

Install Mogadm (Mogile Utilities):

cd /etc/mogilefs/trunk/utils

perl Makefile.PL

make

make install

CREATE MYSQL DATABASE

You should have mysql installed. I'm going to assume you do.

Using phpadmin create a mog user (mog_user)

create a password for mog user (mogpass)

OR

Grant access to remote user by doing:
$> mysql -u root -prootpassword

$> GRANT usage ON . to mog_user@www.domainname.com (put the correct user/domain(source) here)
$> IDENTIFIED BY 'mogpassword';

$> GRANT ALL PRIVILEGES

$> ON . TO mog_uer@www.domainname.com WITH GRANT OPTION;

exit

/etc/init.d/mysql restart

Automatically create a database for the mogilefs:

cd etc/mogilefs/trunk/server

vi mogdbsetup

edit the following:

dbhost => "localhost",

dbname => "mogilefs",

dbrootuser => "root",

dbrootpass => "root_password",

dbuser => "mog_user",

dbpass => "mogpass",

save and run /etc/mogilefs/trunk/server/mogdbsetup

you will be asked a series of questions. Answer yes to them all.

The mogilefs database should be created. Check in phpmyadmin to verify.

Remove the id and password information when you are finished from mogdbsetup.

YOU MUST DO THIS it solves errors about lib path when running mogadm are solved by the following:

Do this - to set up MogileFS.pm go to the /etc/mogilefs/trunk/api/perl directory and do

perl Makefile.PL

make

make test

make install (assuming all goes well).

You may have to cpan install something based on the errors from perl Makefile.PL.

Install Mogilefs utils:

cd /etc/mogilefs/trunk/utils

perl Makefile.PL

make

make test

make install

Configure Mogstored:

On each storage server, create a configuration file at /etc/mogilefs/mogstored.conf with the following:

httplisten=0.0.0.0:7500

mgmtlisten=0.0.0.0:7501

docroot=/var/mogdata

Startup Mogstored:

open a putty session as root and type mogstored. Mogstored should start.

Configure MogileFS:

edit the bold areas of the mogilefsd.conf file:

cp /etc/mogilefs/trunk/server/conf/mogilefsd.conf /etc/mogilefs/mogilefsd.conf

#daemonize = 1

db_dsn = DBI:mysql:mogilefs:host=127.0.0.1

db_user = mog_user

db_pass = dbpass

conf_port = 7001

listener_jobs = 10

delete_jobs = 1

replicate_jobs = 5

mog_root = var/mogdata

reaper_jobs = 1

launch new putty session ( I use putty: http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

for my ssh sessions to the server.).

login as mogilefsd

at the command prompt run mogilefsd

Use 'mogadm' to add each storage server to the database.

The following example would add the host mogilestorage.yourdomain.com as a storage server, assuming that mogilestorage.yourdomain.com had an IP address of 192.168.42.3 (listening on port 7500) and your tracker had an IP address of 192.168.42.1 (listening on port 6001):

# mogadm --lib=/usr/local/share/perl/5.8.4 --trackers=192.168.42.1:6001 host add mogilestorage --ip=192.168.42.3 --port=7500 --status=alive

You can confirm that your host(s) were added with the following command;

# mogadm --lib=/usr/local/share/perl/5.8.4 --trackers=192.168.42.1:6001 host list

You also need to add devices for each storage host. If you don't provide a device id mogadm is supposed to do it for you... in practice I find it dies with an error, so you will need to manually add a unique device id after the host:
# mogadm --lib=/usr/local/share/perl/5.8.4 --trackers=192.168.42.1:6001 device add mogilestorage 1

Finally, add the correctly-name device (folder) to each storage host. I have been unable to get the tools to handle this well, so I am probably doing something wrong. As a workaround, I used the modadm device list command to see what device names were assigned and then I added the folders to my storage hosts. Run the following command:

# mogadm --lib=/usr/local/share/perl/5.8.4 --trackers=192.168.42.1:6001 device list

It will list each host and the device name followed by its status and storage available. Here is example output:

mogilestorage 1: alive

used(G) free(G) total(G)

dev1: alive 0.892 67.772 68.664

This means "mogilestorage" has a host id of "1" and it has one device named "dev1" on it and that device is in the "alive" state (your other statistics will probably be zeros). Using the example output above, you would simply create the directory on mogilestorage.yourdomain.com:

You can also test using mogadm:

mogadm -–trackers=127.0.0.1:7001 check

use mogadm to add the host:
mogadm --trackers=127.0.0.1:7001 host add host1
domain:
mogadm --trackers=127.0.0.1:7001 domain add storage
and class:
mogadm --trackers=127.0.0.1:7001 class add storage files.

Go into phpmyadmin, open the hosts table and change the host status to alive and add a device with device id 1, host id 1 and status = alive in the device table.

OR

mogadm -–trackers=127.0.0.1:7001 device add device1 1

and mark the device alive

mogadm -–trackers=127.0.0.1:7001 device mark host1,cin 1 alive

check your devices:

mogadm -–trackers=127.0.0.1:7001 device list

Check it out:

mogadm -–trackers=127.0.0.1:7001 check

If everything checks out ok you will see the following:

Checking trackers...

127.0.0.1:7001 ... OK

Checking hosts...

1 host1 ... OK

Checking devices...

host device size(G) used(G) free(G) use%


1 dev1 138.236 0.143 138.094 0.10%


total: 138.236 0.143 138.094 0.10%

Once everything is working you can daemonize mogilefsd:

edit the mogilefsd.conf file and remove the # in front of daemonize:

vi /etc/mogilefs/mogilefsd.conf

daemonize = 1

db_dsn = DBI:mysql:mogilefs:host=127.0.0.1

db_user = mog_user

db_pass = dbpass

conf_port = 7001

listener_jobs = 10

delete_jobs = 1

replicate_jobs = 5

mog_root = var/mogdata

reaper_jobs = 1

To start mogstored as a daemon type:

mogstored -d

To test and see if it's mogstored that's messed up or something along

the way, try telnetting to your mogstored (port 7500 by default) and

doing this:

PUT /dev1/test HTTP/1.0

Content-length: 4

test

See if that creates the 'test' file in your /var/mogdata/dev1 directory.

If it works, good, if it doesn't, you should get back a 404/something with

a more detailed error message.

Now put a file onto mogstored via mogilefsd (tracker):

cd /etc

mogtool –-trackers=127.0.0.1:7001 --domain=domainname –-class=classname inject motd motd

check /var/mogdata/dev1/0/000/000 for a file named xxxxxxxxxx.fid . If the file exists everything is successful.

Now delete the file:

mogtool –-trackers=127.0.0.1:7001 --domain=domainname –-class=classname delete motd

check /var/mogdata/dev1/0/000/000 and the file should be gone.

It's all good!

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