2 – InfiniPath Cluster Administration

Configuring ssh and sshd Using shosts.equiv

Q

This next example assumes the following:

■Both the cluster nodes and the front end system are running the openssh package as distributed in current Linux systems.

■All cluster users have accounts with the same account name on the front end and on each node, either by using NIS or some other means of distributing the password file.

■The front end is called ip-fe.

■Root or superuser access is required on ip-feand on each node in order to configure ssh.

■ssh, including the host’s key, has already been configured on the system ip-fe. See the sshd and ssh-keygenman pages for more information.

The example proceeds as follows:

1.On the system ip-fe, the front end node, change /etc/ssh/ssh_config to allow host-based authentication. Specifically, this file must contain the following four lines, set to ‘yes’. If they are already present but commented out with an initial #, remove the #.

RhostsAuthentication yes RhostsRSAAuthentication yes HostbasedAuthentication yes EnableSSHKeysign yes

2.On each of the InfiniPath node systems, create or edit the file /etc/ssh/shosts.equiv, adding the name of the front end system. You’ll need to add the line:

ip-fe

Change the file to mode 600 when finished editing.

3.On each of the InfiniPath node systems, create or edit the file /etc/ssh/ssh_known_hosts. You’ll need to copy the contents of the file

/etc/ssh/ssh_host_dsa_key.pub from ip-feto this file (as a single line), and then edit that line to insert ip-fessh-dssat the beginning of the line. This is very similar to the standard known_hosts file for ssh. An example line might look like this (displayed as multiple lines, but a single line in the file):

ip-fe ssh-dss AAzAB3NzaC1kc3MAAACBAPoyES6+Akk+z3RfCkEHCkmYuYzqL2+1nwo4LeTVWp CD1QsvrYRmpsfwpzYLXiSJdZSA8hfePWmMfrkvAAk4ueN8L3ZT4QfCTwqvHVvS ctpibf8n aUmzloovBndOX9TIHyP/Ljfzzep4wL17+5hr1AHXldzrmgeEKp6ect1wxAAAAF QDR56dAKFA4WgAiRmUJailtLFp8swAAAIBB1yrhF5P0jO+vpSnZrvrHa0Ok+Y9 apeJp3sessee30NlqKbJqWj5DOoRejr2VfTxZROf8LKuOY8tD6I59I0vlcQ812 E5iw1GCZfNefBmWbegWVKFwGlNbqBnZK7kDRLSOKQtuhYbGPcrVlSjuVpsfWEj u64FTqKEetA8l8QEgAAAIBNtPDDwdmXRvDyc0gvAm6lPOIsRLmgmdgKXTGOZUZ

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IB6054601-00 D

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Q-Logic IB6054601-00 D manual Change the file to mode 600 when finished editing
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IB6054601-00 D specifications

The Q-Logic IB6054601-00 D is a high-performance InfiniBand adapter card designed for data centers and enterprise applications requiring robust connectivity and low-latency communication. This adapter is part of QLogic's extensive portfolio of networking solutions, catering to the needs of high-performance computing (HPC), cloud computing, and virtualization environments.

One of the standout features of the IB6054601-00 D is its capability to support data transfer rates of up to 56 Gbps. This makes it ideal for applications demanding large bandwidth and quick data processing. The adapter is optimized for RDMA (Remote Direct Memory Access) technology, which allows data to be transferred directly between the memory of different computers without involving the CPU. This reduces latency and CPU overhead, leading to enhanced overall system performance.

The architecture of the IB6054601-00 D includes support for a dual-port design, which offers increased bandwidth, redundancy, and fault tolerance. This dual-port configuration is especially advantageous for environments that require high availability and reliability, such as financial services and mission-critical applications.

The adapter utilizes advanced error detection and correction mechanisms, ensuring that data integrity is maintained during transmission. With features like adaptive routing and congestion management, the IB6054601-00 D is capable of optimizing the handling of data flows, thereby enhancing performance even under heavy loads.

In terms of compatibility, the Q-Logic IB6054601-00 D supports a wide range of operating systems and virtualization technologies, making it easy to integrate into diverse IT environments. It also includes drivers and software packages that facilitate seamless deployment and management.

In addition to high-speed connectivity, the adapter is designed with power efficiency in mind. It adheres to Energy Star regulations, helping organizations lower their operational costs while minimizing their environmental footprint.

Overall, the Q-Logic IB6054601-00 D stands out for its high throughput, low latency, and reliability. Its combination of advanced features and technologies positions it as an excellent choice for organizations looking to enhance their data center performance and maximize the efficiency of their network infrastructure. With the growing demands for faster and more efficient data transfer, solutions like the IB6054601-00 D are essential in meeting the evolving needs of modern enterprises.
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