Difference between revisions of "Cluster shared storage"
From Teknologisk videncenter
m (→RedHat/Centos WEB servers) |
m (→RedHat/Centos shared storage) |
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*Each WEB server has access to the same data from the shared storage calles NAS - Network Attached Storage. | *Each WEB server has access to the same data from the shared storage calles NAS - Network Attached Storage. | ||
*The WEB-servers has Read/Write access to the NAS. | *The WEB-servers has Read/Write access to the NAS. | ||
| − | *Locking of files open for writing is necessary. | + | *Locking of files open for writing is necessary. |
| + | [[Image:SAN tegning1.png|thumb|300px|none| Gigabit ethernet SAN/Cluster løsning]] | ||
| + | |||
== The shared Storage == | == The shared Storage == | ||
Two servers with each two drives are installed with [http://www.freenas.org FreeNAS] | Two servers with each two drives are installed with [http://www.freenas.org FreeNAS] | ||
| Line 9: | Line 11: | ||
== RedHat/Centos WEB servers == | == RedHat/Centos WEB servers == | ||
The WEB servers all run Centos 5.2 and use the the FreeNAS servers for application data. | The WEB servers all run Centos 5.2 and use the the FreeNAS servers for application data. | ||
| − | *Install [[iSCSI]] initiator software | + | *On one system do the following |
| − | * | + | *#Install [[iSCSI]] initiator software on the WEB-servers |
| + | *##Attach the logical drives to the system system | ||
| + | *#Create a Volume Group | ||
| + | *#Create a logical Volume | ||
| + | *#Create a GFS filesystem | ||
| + | *On all the Clusternodes | ||
| + | *#Install [[iSCSI]] initiator software on the WEB-servers | ||
| + | *##Attach the logical drives to the system system | ||
| + | *#Make a mountppoint | ||
| + | *#Mount the Logical Volume (GFS Filesystem) | ||
Revision as of 15:19, 31 March 2009
RedHat/Centos shared storage
Consider the drawing below. The WEB-servers run Centos 5.2 and share the redundant data from the shared storage.
- Each WEB server has access to the same data from the shared storage calles NAS - Network Attached Storage.
- The WEB-servers has Read/Write access to the NAS.
- Locking of files open for writing is necessary.
The shared Storage
Two servers with each two drives are installed with FreeNAS The drives are exported as iSCSI targets.
RedHat/Centos WEB servers
The WEB servers all run Centos 5.2 and use the the FreeNAS servers for application data.
- On one system do the following
- Install iSCSI initiator software on the WEB-servers
- Attach the logical drives to the system system
- Create a Volume Group
- Create a logical Volume
- Create a GFS filesystem
- Install iSCSI initiator software on the WEB-servers
- On all the Clusternodes
- Install iSCSI initiator software on the WEB-servers
- Attach the logical drives to the system system
- Make a mountppoint
- Mount the Logical Volume (GFS Filesystem)
- Install iSCSI initiator software on the WEB-servers