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July 2010 |
Introduction:
This guide can be used to set up mulitple share protocols as the creation of a shared folder is the same for each share protocol, then you just choose which protocols to enable on the created share. Some protocol specific settings may need to be set depending on what you choose to use.
Setup:
There are three main steps to creating shares using these protocols; creating the volume, changing quota settings to manage storage allowances and setting up the share details to control user access. Please see the Openfiler Initial Setup article to see how to create users and groups as in this example I will assume that LDAP has been setup and users/groups have been created.
1)The first step is the easiest: go into the Services page and enable the service you want to use, in this example I will be using SMB/CIFS for sharing to Windows computers and FTP web access. On the right menu you may need to select a protocols setup page; for SMB all I needed to do was change the ‘Server String’ and ‘NetBIOS’ name to “OFServer” and for FTP I changed the server name to “OFServer” aswell.
2)Creating new storage is made up of three steps; partitioning space on a drive, adding partition(s) to a Volume Group and creating a logical volume from the Volume Group’s pooled storage. ‘Volume’ may refer to a physical volume on a disk, a logical volume inside an extended partition on a disk or a logical volume created from a Volume Group’s pooled storage. Go to the Volumes page, if this is the first time setting up storage or if all partitions are assigned to Volume Groups then it will ask you to “create new physical volumes”. Clicking this will bring you to the Block Devices page, also accessible from the right side menu.
3)Go into the drive you want to add partitions to, you will be shown a table with details about all current partitions on the drive. If you are partitioning space on the OS disk you can either create one more primary partition or one extended partition with multiple logical volumes inside it as there are already three primary partitions used for the OS. This limitation isn’t present on other disks used and you can create more then 4 partitions per disk. Partition size is set by specifying the start and end cylinders, to find the correct number of cylinders for the size you want use the formula: [partition size] * [total # cylinders] / [total disk size] (rounded). In this example I am creating an extended partition with the remaining 62.49GB of space and then creating a 10GB logical volume inside it ( 10GB* 9729 / 74.53GB = 1305 cylinders ).
4)Next go to ‘Volume Groups’ on the right side menu, here can add one or more physical volumes to a volume group rather simply. Check the box next to the volumes you want to add, enter a name for the Volume Group and then click Add Volume Group. From here you can also view a Volume Group’s details and add more physical volumes to an existing Volume Group.
5)Now go to ‘Add Volume’ on the right menu. Here you will create a logical volume to be used for file sharing. Storage from all the volumes in a Volume Group is pooled together so you could have one logical share volume made up of multiple physical disks if you want to. Select to Volume Group from the drop down list at the top and then use the section at the bottom to create a volume. You can use XFS or Ext3 file systems, XFS has greater overall performance. If you add more physical volumes to a Volume Group at a later date you can go to ‘Manage Volumes’ on the right menu, click edit next to a logical volume and increase the size with the newly added space.
6)Next we will create a shared folder; go to the ‘Shares’ page and select the volume you have just created. Enter a sub-folder name and click add. Now the sub-folder will appear on the directory tree; you can create another folder inside this one however you are only able to make a folder at the end of a directory tree into a share. Click ‘Make Share’ and you will be brought to the edit share page. Put the share name you wish to use under “Override SMB/Rsync share name” and click change, if you don’t the default share name will be in the form of “[volumegroup].[volume].[folder]” which is a pain to enter when accessing it over the network. Check the ‘Public Access’ radial button if you want it to be an open network share, otherwise leave it as default. In the next part select a group to be the share’s ‘Primary Group’ and click update. The Primary Group is the ‘owner’ of the share and anything stored on the share will add to the quota total of that group, regardless of what group the user connecting to the share is in. The Primary Group can only have read/write access while other groups are able to have no access, read-only access, or read/write access. Down the bottom you can set the overall share settings, being able to limit all groups to read-only or no access, even the Primary Group. Here I will allow read/write access for SMB/CIFS and FTP. Use the default settings for ‘SMB/CIFS Options’.
7)Quota settings aren’t essential so if you don’t need them then you have finished creating your file share. Quotas are set per volume group, not per share, so you can limit a user’s or group’s data usage over multiple shares if they are in the same volume group. Be sure to take into account the Primary Group effect; say you set a data limit of 2GB for Group1, the combined storage limit of all shares in that Volume Group that have Group1 as the Primary Group will be 2GB. A good way to get past this is to use two types of LDAP groups; Share Groups and User Groups. Each shared folder will have its own group which is set as the primary, so setting a quota on this share group will create a storage limit for that share. You then set access permissions to user groups to manage user access to a share. You could also set user quotas to set a certain user’s storage allowance.
In this example I have created three shares, each with their own share group. Quotas have been set for each share using their primary groups so now Finance and PR users are not subject to a Volume Group wide Quota limit.
Special Notes:
- To access an FTP share from your web browser enter the address ftp://[server_ip_address]:21/[share_name]
- To access a WebDAV share you need to enter the full local directory address, not just the share name, after the server’s IP address. The full path to the share can be seen in the Shares page:
To access the PR share through WebDAV you would enter this address in your browser: “http://[server_ip_address]/mnt/volumegroup1/data/PR/”
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July 2010 |
Introduction:
Openfiler is an open source Linux distribution that is used for NAS systems as it comes with common sharing features already installed .It is administered through a browser based management application making it feel like more of a network appliance than a server.
Setup:
This guide goes through setting up Openfiler when you start it up for
the
first time.
1) First you need to find the IP address to connect to, logon to
the server locally with the username “root” and the password you were
supplied with. Once logged on use the ‘ifconfig’ command, in the output
should be either ‘eth0’ or ‘eth1’, the DHCP assigned address should be
below it among other information. Access the Openfiler management
interface through your browser with the address
“https://[server_ip_address]:446”. Your browser may say that it is an
“Untrusted Connection” as it does not have a validated security
certificate, however as you know the address you are accessing is secure
just add an exception. The default login details are “Openfiler” and
“password”. To change the login password go to the Accounts tab and
select ‘Admin Password’ from the menu on the right.
2) The first step is to change the system settings to what is
required for your network. The System tab contains the main
administration and network settings. Network setup consists of setting
the DNS hostname and server settings, the network interface
configuration if you wish to use static addresses and also the “Network
Access Configuration” which specifies the subnet that the server will be
connected to. To specify the subnet you need to enter the network
address which represents the entire address range. In this example the
server address is 192.168.1.57 with a subnet mask of 255.255.255.0 so
the network address will be 192.168.1.0 which represents the address
range 192.168.1.1-192.168.1.255. You must also specify whether it is a
share network or a UPS monitoring connection. This setting is necessary
for sharing operations to work on the server.
3) The menu to the right of the System page also has other
important administration options; Time/Date setup, UPS management, Email
notification setup (you must put something for the sender’s address for
it to work, even if it’s not an actual email address), system updating,
system configuration backup as well as Shutdown/Reboot commands. You
may want to check system updates from time to time, updating is a
straight forward process.
4) Next go to the ‘Accounts’ page to set up user information
configuration. If Active Directory is present on the network enable
Domain Controller Authentication and enter the required details. In this
example we are going to run the LDAP service from the Openfiler server.
LDAP will be used to manage user access to Openfiler services using its
own user and group database. The domain can be whatever you want however be sure to include "cn=manager" for the Root bind DN and "openfiler" for the password as they are preconfigured on Openfiler. After filling this in the LDAP service
should automatically become enabled in the Services page.
5) Go to ‘Administration’ which is on the right side menu, here
you can create and manage users and groups. Creation is straight
forward; you can override automatic user or group IDs and set your own
for organization reasons (numbering starts at 500), however it’s not
necessary. For share reasons you must assign a user to the correct group when you create it. While you can add/remove users to groups at a later date you can only assign a users primary group when it is created. This can become an issue say for example User1 is originally assigned to Group1, even if he is later removed from that group and added to Group2 he will still retain Group1 share access rights as well the rights of his new Group2. To fix this delete the user and recreate it setting the new primary group upon creation.
6) Go to the Services page; LDAP server, ACPI daemon and iSCSI
initiator should be running by default. Enable the services you wish to
use and your initial setup is complete.
From here you can go on to setup whatever services you want for your network; SMB/CIFS is used for 'Shared Folder' storage on Windows systems and NFS is used to share to other operating systems such as Mac and Linux distributions. FTP is useful as it widely supported and is accesible using a web browser and iSCSI is a powerful protocol with good transfer speeds to give storage to workstations and servers.
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July 2010 |
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Introduction
The advent of IP (Internet Protocol) into Video Surveillance systems has allowed wireless to be part of the solution enabling a significant extension of physical area coverage. This paper is a tutorial on what a wireless bridge is for IPVS use and it points out an important aspect that has often been overlooked.
Access Point & Bridge
Many schools (used interchangeably with businesses and organizations) have installed wireless equipment to connect students and teachers to the cabled network. This type of installation is called Access Point. An Access Point provides two functions: converting the medium for signal transmission from wireless to cable and vice versa, and serving multiple clients at one time like a hub. It is a popular use of wireless. What is not as well known is the subject of this article- wireless bridge and our legal obligations. We raise these issues for the first time as a report of the research and development efforts expended by the Compucon IPVS team. The findings are useful for schools when considering an extension of the school data network for various purposes including video surveillance. Compucon has gone onto this journey with IPVS in mind but applications are not limited to IPVS.
For the full tutorial, please register here.
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July 2010 |
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Introduction
The advent of IP (Internet Protocol) into Video Surveillance systems has allowed wireless to be part of the solution enabling a significant extension of physical area coverage. This paper is a tutorial on what a wireless bridge is for IPVS use and it points out an important aspect that has often been overlooked.
Access Point & Bridge
Many schools (used interchangeably with businesses and organizations) have installed wireless equipment to connect students and teachers to the cabled network. This type of installation is called Access Point. An Access Point provides two functions: converting the medium for signal transmission from wireless to cable and vice versa, and serving multiple clients at one time like a hub. It is a popular use of wireless. What is not as well known is the subject of this article- wireless bridge and our legal obligations. We raise these issues for the first time as a report of the research and development efforts expended by the Compucon IPVS team. The findings are useful for schools when considering an extension of the school data network for various purposes including video surveillance. Compucon has gone onto this journey with IPVS in mind but applications are not limited to IPVS.
For the full tutorial, please register here.
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July 2010 |
|
Introduction
The advent of IP (Internet Protocol) into Video Surveillance systems has allowed wireless to be part of the solution enabling a significant extension of physical area coverage. This paper is a tutorial on what a wireless bridge is for IPVS use and it points out an important aspect that has often been overlooked.
Access Point & Bridge
Many schools (used interchangeably with businesses and organizations) have installed wireless equipment to connect students and teachers to the cabled network. This type of installation is called Access Point. An Access Point provides two functions: converting the medium for signal transmission from wireless to cable and vice versa, and serving multiple clients at one time like a hub. It is a popular use of wireless. What is not as well known is the subject of this article- wireless bridge and our legal obligations. We raise these issues for the first time as a report of the research and development efforts expended by the Compucon IPVS team. The findings are useful for schools when considering an extension of the school data network for various purposes including video surveillance. Compucon has gone onto this journey with IPVS in mind but applications are not limited to IPVS.
For the full tutorial, please register here.
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