Linux LVM: Adding Disk Space to Virtual of Physical Drives In this writeup, we will aim to increase the size of the root drive that has: 1) Standard drive partitioning using fdisk and no LVM: /dev/sda1 2) Has LVM for the OS and files: /dev/sda2 This procedure will help to avoid the can't find the […]

DNS issue: Can't ping but nslookup works You can do several things in this case. Start Services then recycle DHCP Client.  ipconfig /flushdns and netsh int ip reset resettcpip.txt can fix this temporarily as well. I've elected to simply stop DHCP Client and let the system do all lookups against my internal DNS servers. This […]

We will setup a serial null modem cable for administering and connecting to a physical machine via another in the event that:   1) We want to capture kernel crashes and dumps.   2) Login to the machine machine remotely via another linux box to do things like restart the network.   For this we will need:   1) […]

Getting this? com.cloudera.cmf.service.CommandException: java.io.IOException: Cannot create command directory: /var/lib/cloudera-scm-server/temp/commands/114 it's because we blow the folder away.  Reinstall the packages: [root@cm-r01nn01 ~]# yum reinstall cloudera-manager-daemons cloudera-manager-agent cloudera-manager-server -y Thx, TK

Recent kernel panics have pointed to an issue with the HPET timer on some motherboards.  To disable, add the following to the kernel line: nohpet clocksource=rtc Then also disable HPET from BIOS. Thx, TK  

Getting this? # locale locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory   Check this: [root@cm-r01nn02 yum.repos.d]# cat /etc/locale.conf LANG=en_EN.UTF-8 [root@cm-r01nn02 yum.repos.d]#  should be: [root@cm-r01nn01 ~]# cat […]