As far as routing goes, it is a very bad idea to place multiple network interfaces with IPs of a single network (subnet). The routing table, which decides which interface to route the data through, reads the table line by line, thus – all traffic goes through a single interface of the batch (-> of…
kSar is one of the best tools to display an easy chart based on your system’s SAR metrics collection. kSar has not been developed since sometime in 2013, and it lacks the ability to parse modern Linux sysstat charts, leaving us with some missing info. However – some good soul has taken kSar and forked…
I have created an RPM package, and SRPM package, which I will share here, for smartmontools version 6.5 on RHEL 6. Note that the official version is 5.43 which is clueless with many modern SSD disks. I have yet to test it correctly, and in general – use at your own risk. smartmontools-6-5-1-el6-src
Recently, with the release of a new 8.x version of Dell SrvAdmin tools, the Centos/RHEL5 (and XenServer, by the way) repositories disappeared. It appears that Dell will not support the RHEL5.x brands anymore. The proper solution is to install the last 7 SrvAdmin tools, as can be shown in this site. This solves the problem…
When installing Oracle RAC (or in its more modern name – GI) version 11.2.0.1 and above, you can use Oracle ASM DiskGroup as your CRS+Voting file location. It is fairly simple changing the disk membership in Oracle ASM DiskGroup, however, when you face some unknown bugs which prevent you from doing just that, or when you are required…
