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Category: network related

Tunnelblick ovpn client for Mac os High Sierra

Tunnelblick ovpn client for Mac os High Sierra

This weekend I was playing around with Openvpn to a new site. I use Tunnelblick for this, but this time was the first time after I had upgraded my Mac to High Sierra (10.13.5). Suddenly my vpn connections didn’t want to load anymore. Tunnelblick threw these errors to me:

I was running a beta, so first thing was to install the stable release, but the message remained. This link: https://tunnelblick.net/cKextLoadError.html helped me. In high sierra to use or add modules…

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Building bridges: “Bridge must not have discovery mode for LACP interface; Interface file: bondeth0;”

Building bridges: “Bridge must not have discovery mode for LACP interface; Interface file: bondeth0;”

Some days start as an exatastic day and end up grasping your hair. This post is about such a day. A brand new shiny X7 Quarter Rack exadata was being installed for a customer. This setup was a fairly straightforward one. Quarter rack, full ovm and 2 virtual clusters. Not too fancy. LACP is being used for the public network on the fibers and vlan tagging is done on the switch. Given that, my customer created a OEDA configuration using…

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OCI-C orchestration error with load balancers

OCI-C orchestration error with load balancers

There are some of those days that you just don’t get it anymore. Last few days were like that for me. One of my current projects is to provide a fully redundant infrastructure in the Oracle Cloud for some critical applications. So I created the Database as a service with dataguard to another region, provisioned a vm (IAAS) for the webserver and tomcat and made some firewall rules. Check also my colleague Freek (you can find him here @dhoogfr ) his journey…

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OEDA does more than you would expect: januari 2018 update

OEDA does more than you would expect: januari 2018 update

Today I was at one of my Exadata customers for a (PL/)SQL performance tuning assignment. In the meantime there is a parallel project running for a new Exadata. So as you might know, the configuration for an Exadata starts with running the OEDA-tool. The latest version can always be found on My Oracle Support note 888828.1. At the moment of writing this blog, the latest one was January 2018 with patch number 27370068. One of the things which caught our attention,…

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Put the pedal to the metal: Oracle Bare metal cloud! The first impressions on networking

Put the pedal to the metal: Oracle Bare metal cloud! The first impressions on networking

The beginning In the beginning of this year (2017), I was doing a cloud project, despite all efforts, unfortunately not on the Oracle cloud. When we finally had to deliver, suddenly the license rules changes for non-Oracle other cloud environments and you might or might not remember all options were open again. At that point, I really needed to vent and I wrote the blogpost Why the sun shines for Oracle and it’s cloudy for others. I made some points…

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OEDA does more than you would expect

OEDA does more than you would expect

The title summaries this complete blogpost, the OEDA (oracle exadata deployment assistant) does a lot more than you would expect. Therefor it is pretty important that you should use a recent version every time when fiddling around with virtual machines on the exadata. A simple example I just discovered and did not know about. In my previous blogpost about the bond_eth issue (find it here: http://vanpupi.stepi.net/index.php/2017/06/09/exadata-ovm-creation-second-argument-is-not-defined-bondeth_mode/ ) you could read that there was a problem while I invoked domU maker manually…

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Exadata ovm creation: Second argument is not defined: bondeth_mode

Exadata ovm creation: Second argument is not defined: bondeth_mode

There are some days which start as exatastic days and end up at Oracle Support. This blogpost is (hopefully) one with temporal validity. I know that’s a 12c feature as well, but that’s another story. The error which I’ll discuss here, will tell you about the “Second argument is not defined: bondeth_mode” error in the domu maker logfile. A while ago, one of my customers asked me to extend one of their exadata’s with 2 extra compute nodes, make sure…

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ORACLE DB IN THE AZURE CLOUD – PT2

ORACLE DB IN THE AZURE CLOUD – PT2

During the BI in the cloud project, one of the aspects we had to test is the network. Here is how we did it to figure out how the network performs and most of all, is it stable? One of the most important things in a cloud environment is the network. It connects devices to eachother and makes it possible to have communication between devices. Sounds obvious, right? Some tests we have done, were relying very heavily on the network, such…

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