Duplicity encrypted backups to Amazon S3
Duplicity is a tool for creating bandwidth-efficient, incremental, encrypted backups. It backs directories by producing encrypted tar-format volumes and uploading them to a remote or local file server. And because duplicity uses librsync, the incremental archives are space efficient and…
Building VPC with Terraform in Amazon AWS
Terraform is a tool for automating infrastructure management. It can be used for a simple task like managing single application instance or more complex ones like managing entire datacenter or virtual cloud. The infrastructure Terraform can manage includes low-level components…
ZFS storage with OmniOS and iSCSI
The following setup of iSCSI shared storage on cluster of OmniOS servers was later used as ZFS over iSCSI storage in Proxmox PVE, see Adding ZFS over iSCSI shared storage to Proxmox. It was inspired by the excellent work from…
Using data source to mitigate lack of intermediate variables and interpolation
Just something I dug out in the Terraform forum and would like to keep as a reminder for the future. Terraform will not allow us to do something like this: variable project_name { default = “ane” } variable some_name {…
Clustering with Pacemaker, DRBD and GFS2 on Bare-Metal servers in SoftLayer
SoftLayer is IBM company providing cloud and Bare-Metal hosting services. We are going to setup a cluster of Pacemaker, DRBD and GFS2 on couple of Bare-Metal servers to host our Encompass services. This will provide high availability of the shared…
Tomcat9, ECDSA/ECC (Elliptic Curve) Certificates and HTTP/2
Tomcat9 brings bunch of new features of which support for HTTP/2 and multiple certificates per Virtual Host via SNI extension are most important ones. This needs Java 1.8, the latest APR/TC (Tomcat Native) release 1.2.x, since SNI support in current…
ActiveMQ Master/Slave KahaDB on OCFS2 shared file system
During my tests of shared storage clusters I wondered if ActiveMQ supports file locking on OCFS2 file system which I used on couple of occasions. While looking into it I came across the following warning on the Apache project site:…
Highly Available iSCSI ALUA (Asymetric Logical Unit Access) Storage with Pacemaker and DRBD in Dual-Primary mode – Part2
This is continuation of the Highly Available iSCSI ALUA Storage with Pacemaker and DRBD in Dual-Primary mode series. We have setup the HA backing iSCSI storage and now we are going to setup a HA shared storage on the client…
Highly Available iSCSI ALUA (Asymetric Logical Unit Access) Storage with Pacemaker and DRBD in Dual-Primary mode – Part1
I already wrote a post on this topic so this is kind of extension or variation of the setup described here Highly Available iSCSI Storage with SCST, Pacemaker, DRBD and OCFS2. The main and most important difference is that thanks…
Highly Available iSCSI Storage with SCST, Pacemaker, DRBD and OCFS2 – Part2
This is continuation of the Highly Available iSCSI Storage with SCST, Pacemaker, DRBD and OCFS2 series. We have setup the HA backing iSCSI storage and now we are going to setup a HA shared storage on the client side. iSCSI…