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Debian

Boot On BTRFS With Debian

Post date: August 2, 2009, 11:08 Category: Miscellaneous Views: 2873 Comments
Tutorial quote: This tutorial will explain you how to boot from a BTRFS filesystem with kernel 2.6.31-RC4 and BTRFS 0.19. BTRFS is a new filesystem with some really interesting features like online defragmenting and snapshots. BTRFS is an experimental filesystem, use at your own risk. The kernel used is also experimental.
Debian

Setting Up ProFTPd + TLS On Debian Lenny

Post date: July 30, 2009, 15:07 Category: Security Views: 4284 Comments
Tutorial quote: FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. This article explains how to set up ProFTPd with TLS on a Debian Lenny server.
Debian

High-Availability Load Balancer With HAProxy/Heartbeat On Debian Lenny

Post date: July 14, 2009, 09:07 Category: Installing Views: 6636 Comments
Tutorial quote: This article explains how to set up a two-node load balancer in an active/passive configuration with HAProxy and heartbeat on Debian Lenny. The load balancer sits between the user and two (or more) backend Apache web servers that hold the same content. Not only does the load balancer distribute the requests to the two backend Apache servers, it also checks the health of the backend servers. If one of them is down, all requests will automatically be redirected to the remaining backend server. In addition to that, the two load balancer nodes monitor each other using heartbeat, and if the master fails, the slave becomes the master, which means the users will not notice any disruption of the service. HAProxy is session-aware, which means you can use it with any web application that makes use of sessions (such as forums, shopping carts, etc.).
Debian

Striping Across Four Storage Nodes With GlusterFS On Debian Lenny

Post date: July 12, 2009, 10:07 Category: Installing Views: 3211 Comments
Tutorial quote: This tutorial shows how to do data striping (segmentation of logically sequential data, such as a single file, so that segments can be assigned to multiple physical devices in a round-robin fashion and thus written concurrently) across four single storage servers (running Debian Lenny) with GlusterFS. The client system (Debian Lenny as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86-64 servers with SATA-II RAID and Infiniband HBA.
Debian

Distributed Replicated Storage Across Four Nodes With GlusterFS On Debian Lenny

Post date: June 30, 2009, 11:06 Category: Installing Views: 3644 Comments
Tutorial quote: This tutorial shows how to combine four single storage servers (running Debian Lenny) to a distributed replicated storage with GlusterFS. Nodes 1 and 2 (replication1) as well as 3 and 4 (replication2) will mirror each other, and replication1 and replication2 will be combined to one larger storage server (distribution). Basically, this is RAID10 over network. If you lose one server from replication1 and one from replication2, the distributed volume continues to work. The client system (Debian Lenny as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86-64 servers with SATA-II RAID and Infiniband HBA.
Debian

Distributed Storage Across Four Storage Nodes With GlusterFS On Debian Lenny

Post date: June 25, 2009, 11:06 Category: Installing Views: 3128 Comments
Tutorial quote: This tutorial shows how to combine four single storage servers (running Debian Lenny) to one large storage server (distributed storage) with GlusterFS. The client system (Debian Lenny as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86-64 servers with SATA-II RAID and Infiniband HBA.
Debian

High-Availability Load Balancer With HAProxy/Keepalived On Debian Lenny

Post date: June 16, 2009, 10:06 Category: Installing Views: 4530 Comments
Tutorial quote: This article explains how to set up a two-node load balancer in an active/passive configuration with HAProxy and keepalived on Debian Lenny. The load balancer sits between the user and two (or more) backend Apache web servers that hold the same content. Not only does the load balancer distribute the requests to the two backend Apache servers, it also checks the health of the backend servers. If one of them is down, all requests will automatically be redirected to the remaining backend server. In addition to that, the two load balancer nodes monitor each other using keepalived, and if the master fails, the slave becomes the master, which means the users will not notice any disruption of the service. HAProxy is session-aware, which means you can use it with any web application that makes use of sessions (such as forums, shopping carts, etc.).
Debian

Upgrade multiple debian systems with Approx

Post date: June 15, 2009, 06:06 Category: System Views: 4383 Comments
Tutorial quote: Approx is an HTTP-based Debian archive server. It fetches packages from remote repositories on demand, and caches them for local use.Approx saves time and network bandwidth if you need to install or upgrade Debian software for a number of machines on a local network.
Debian

High-Availability Storage With GlusterFS On Debian Lenny

Post date: June 9, 2009, 11:06 Category: Installing Views: 3839 Comments
Tutorial quote: This tutorial shows how to set up a high-availability storage with two storage servers (Debian Lenny) that use GlusterFS. Each storage server will be a mirror of the other storage server, and files will be replicated automatically across both storage servers. The client system (Debian Lenny as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86-64 servers with SATA-II RAID and Infiniband HBA.
Debian

Creating An NFS-Like Standalone Storage Server With GlusterFS On Debian Lenny

Post date: June 4, 2009, 11:06 Category: Installing Views: 3429 Comments
Tutorial quote: This tutorial shows how to set up a standalone storage server on Debian Lenny. Instead of NFS, I will use GlusterFS here. The client system will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86-64 servers with SATA-II RAID and Infiniband HBA.
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