Recent Posts by Leo Yuen

In a previous blog, I introduced a solution on how to deploy a highly available Windows File Server on OCI, so that workload requires SMB file sharing capability can run on OCI. However, a crucial part is not described in details that is how to automate the handling of secondary IP address failover when a failover event happens. Instead of creating the scripts from scratch, this blog will take you through the steps on how to modify the scripts in an existing repository...

For application workload that requires the capability of SMB file sharing, there are a number of solutions available on OCI, from High Performance Bare Metal deployment to Open Source Samba running on Linux virtual machines. Depending on different workload requirements, customer may choose the most optimal solution for their use cases. This blog will take you through the setup of a Windows file server running on virtual machine that uses native Windows technologies, namely...

This article will show you how to use Automatic Network (anet) resource to configure IPoIB and EoIB bonded interfaces in a Solaris zone on an Exalogic machine running Solaris 11.1. Let's start with a basic configuration of a zone with no network interface configured: zonecfg:zoss01> info zonename: zoss01 zonepath: /zones/zoss01 brand: solaris autoboot: false bootargs: file-mac-profile: pool: limitpriv: scheduling-class: ip-type: exclusive hostid: fs-allowed: rootzpool: ...

On Exalogic, a name service such as NIS or LDAP is required for NFSv4 to work properly, therefore most customers have this configured in their environments. If you are interested in how to configure NIS on Solaris 11.1, this article "Solaris on Exalogic - Setup NIS on Solaris 1.1" will be helpful. A name service provides a centralized repository of user and group information so that a user needs to be created once on the NIS server and then this user will be seen on all NIS...

For those customers who are running the Solaris version of Exalogic Elastic Cloud Software 2.0.4.0.* on Exalogic will know that the Operating System has been upgraded from Solaris 11 Express to Solaris 11.1. There is a MOS note (ID: 1491906.1) on how to setup NIS on Solaris 11 Express, it has helped a lot of customers to successfully configured NIS on their systems. Experienced Solaris administrator should be able to follow the above note to configure the same on Solaris 11.1,...

Introduction This post explains why probe-based failure detection is required if there is VNIC created over eoib0 and eoib1 on a compute node running Solaris. Main Article There are lots of reason for customer to create VNIC over eoib0 and eoib1 on a compute node running Solaris, two typical examples are compute node needs to connect to a VLAN over the EoIB network there are containers running on the compute node that require 10GbE connectivity We talked about why Transitive...

Summary This blog describes how to enable transitive probe-based failure detection. Main Article On Exalogic, no matter which supported Operating Systems that a compute node is running, it relies on the IB gateways (NM2-GW) to provide both internal (IPoIB) and external (EoIB) network connectivity. Each compute node is physically connected to two IB gateways by copper cables, the IB gateway in turn is connected to customer's 10GbE infrastructure, typically a level 2 switch. By...

In a customer engagement, I found that that their bond0 and bond1 configurations look like this:   root@el01cn01:~# ipmpstat -i INTERFACE ACTIVE GROUP FLAGS LINK PROBE STATE eoib0 no bond1 is----- up disabled ok eoib1 yes bond1 --mb--- up disabled ok bond0_0 yes bond0 --mb--- up disabled ok bond0_1 no bond0 is----- up disabled ok   Notice that the active...

Compute nodes in Exalogic communicate with each other and mount their shares from the ZFS storage appliance over the bond0 interface. Bond0 is a highly available network interface over the InfiniBand fabric using a portability layer called IPoIB that allows compute nodes and the storage appliance to communicate using TCP/IP protocol over InfiniBand. In previous entry, we have created a Solaris 10 branded zone, obviously we would also like the branded zone to be able to...