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Special Forums UNIX and Linux Applications Virtualization and Cloud Computing Virtualization and physical resources Post 302276572 by johnf on Wednesday 14th of January 2009 05:39:20 AM
Old 01-14-2009
I agree with bakunin on the premis that clever salemen sell non-technical managers some TIN which is unsuitable for the job. However I cannot totally agree with the statement that all cases of production SHOULD NOT be through VIO served LPAR configuration. I have worked for a number of clients where the large grunt machines running very large Oracle databases were by necessity standalone LPARs with their own resources (network disk etc.) However for the low order LPARs these were configured in a dual VIO server configuration with auto failover of all services (network SSA disk etc.) As long as the network and disk connections are proven and stable then the performance of this configuration were more than adequate.
 

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SYSTEMD-NETWORKD.SERVICE(8)				     systemd-networkd.service				       SYSTEMD-NETWORKD.SERVICE(8)

NAME
systemd-networkd.service, systemd-networkd - Network manager SYNOPSIS
systemd-networkd.service /lib/systemd/systemd-networkd DESCRIPTION
systemd-networkd is a system service that manages networks. It detects and configures network devices as they appear, as well as creating virtual network devices. To configure low-level link settings independently of networks, see systemd.link(5). systemd-networkd will create network devices based on the configuration in systemd.netdev(5) files, respecting the [Match] sections in those files. systemd-networkd will manage network addresses and routes for any link for which it finds a .network file with an appropriate [Match] section, see systemd.network(5). For those links, it will flush existing network addresses and routes when bringing up the device. Any links not matched by one of the .network files will be ignored. It is also possible to explicitly tell systemd-networkd to ignore a link by using Unmanaged=yes option, see systemd.network(5). When systemd-networkd exits, it generally leaves existing network devices and configuration intact. This makes it possible to transition from the initrams and to restart the service without breaking connectivity. This also means that when configuration is updated and systemd-networkd is restarted, netdev interfaces for which configuration was removed will not be dropped, and may need to be cleaned up manually. CONFIGURATION FILES
The configuration files are read from the files located in the system network directory /lib/systemd/network, the volatile runtime network directory /run/systemd/network and the local administration network directory /etc/systemd/network. Networks are configured in .network files, see systemd.network(5), and virtual network devices are configured in .netdev files, see systemd.netdev(5). SEE ALSO
systemd(1), systemd.link(5), systemd.network(5), systemd.netdev(5), systemd-networkd-wait-online.service(8) systemd 237 SYSTEMD-NETWORKD.SERVICE(8)
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