After connecting my two sites using IPSEC see ipsec site-to-site with virtual tunnel interface/ it is easy to ssh to the remote site and OpenVPN see OpenVPN site to site Let us go a step further and activate also remote desktop. I want to be able to connect from my Linux machines but also from… Read More »
Because the number of my systems increased moving all my stuff to a rack was the right decision to avoid cable spaghetti and administration hell. But when you have a rack you need to have an administration console for it. Looking on the market (the deals market) the cheapest console I could find was some… Read More »
I was relocating my servers in a new rack and configuration and decided to put all my ILO ports to a different router with no DHCP. Obviously I ended up with some fake IP6 address defaulted to the ILO device. To make the changes to ILO without a server reboot we have the nice hponcfg… Read More »
I wanted to move my test db2 installation based on a Fedora Core 23 to a RHEL7 virtual machine without having to reinstall everything and not lose any data. This is in fact cloning my test environment database. This is not an easy task as is not officially supported by IBM but the beauty of… Read More »
At some point my RHEL7 development virtual machine run out of space. Resizing the image is really made easy by RedHat: STEP 1: Resize the virtual machine disk [root@localhost VMs]# qemu-img resize RHEL7-clone.qcow2 50G Image resized. [root@localhost VMs]# STEP 2: Start the VM and check the disks from inside the VM Check the virtual disk:… Read More »
The requirement that an enterprise system has high availability on site and across sites is very often encountered in the world of financial systems. To achieve this requirement the obvious solution is to have a cluster on the primary site (PR) and another cluster on the disaster recovery site (DR). On the PR we created… Read More »
I have two sites hosting my home servers so I wanted a solution to have a permanent link between the sites. On site one I have an EdgeRouter POE and on the other site an EdgeRouter Lite and the obvious solution is to have a site to site VPN on a permanent basis. There is… Read More »
After an OwnCloud upgrade I was getting complains from my users that WebDav and OwnCloud windows client were no longer able to upload files. By looking into owncloud.log the following was the repeated error: {“app”:”remote”,”message”:”An exception occurred while executing ‘SELECT * FROM `oc_locks` WHERE `userid` = ? AND (`created` + `timeout`) > 1456517102 AND ((… Read More »
On my servers I want to completely get read of graphical boot. I do not like fancy graphics that are not compatible with my basic Matrox integrated card and I do not want my system to start directly in X and load the server with unwanted stuff. STEP 1: Remove graphical boot Completely un-install the… Read More »
I had a situation when from a strange reason a default grub setup as a result of a system recovery was missing the lvm and raid modules so I was not able to boot. I have the following setup on the server: – my boot partition is in fact an ext4 partition over a mdraid… Read More »