This blog is exclusively for Unix, VMware, and Oracle Linux Virtual Manager administrators. I will be sharing posts covering topics such as Solaris, Linux, Veritas, clusters, LDOMs (OVM), AIX, Oracle Linux Virtual Manager (OLVM), and various DevOps tools.
LLT and GRAB VCS uses two components, LLT and GAB to share data over the private networks among systems. These components provide the performance and reliability required by VCS. LLT LLT (Low Latency Transport) provides fast, kernel-to-kernel comms and monitors network connections. The system admin configures the LLT by creating a configuration file (llttab) that describes the systems in the cluster and private network links among them. The LLT runs in layer 2 of the network stack GAB GAB (Group membership and Atomic Broadcast) provides the global message order required to maintain a synchronised state among the systems, and monitors disk comms such as that required by the VCS heartbeat utility. The system admin configures GAB driver by creating a configuration file ( gabtab). LLT and GAB files /etc/llthosts --> The file is a database, containing one entry per system, that links the LLT system ID with the hosts name. The file is identical on each server in the cluster. /etc...
Here we discuss the Commonly used Network Commands for Solaris network Administration. How to list the Physical Network card's information : # dladm show-phys LINK MEDIA STATE SPEED DUPLEX DEVICE net0 Ethernet down 0 unknown i40e0 net1 Ethernet down 0 unknown i40e1 net2 Ethernet down 0 unknown i40e2 net3 Ethernet down 0 unknown i40e3 net4 Ethernet ...
Saving Domain Configurations for Future Rebuilding The basic process is to save the resource constraints information for each domain into an XML file, which can then be re-issued to the Logical Domains Manager, for example, after a hardware failure to rebuild a desired configuration. Restore a Domain Configuration From an XML File ( ldm add-domain ) works for guest domains, but not for the control ( primary ) domain. You can save the primary domain's constraints to an XML file, but you cannot feed the file back into the ldm add-domain -i command. However, you can use the ldm init-system command and the resource constraints from the XML file to reconfigure your primary domain. You can also use the ldm init-system command to reconfigure other domains that are described in the XML file, but those domains are left inactive when the configuration is complete. The method that follows does not preserve actual bindings, only the ...
Comments
Post a Comment