• Kubernetes challenges in Enterprise Environment Posted in: Cloud, Uncategorized -   As the architecture of applications become more and more complex, it becomes difficult to implement it in Enterprise environments. Recently, was working on setting up Kubernetes cluster in an Enterprise environment and some of challenges were encountered there which I believe will appear in all Enterprise environments. They can be listed as follows along with some resolution: HTTP proxy to control internet traffic Proxy server adds to the complexity of how different Docker and Kubernetes services communicate with the outside world. Docker requires separate configuration for HTTP proxy to communicate – https://docs.docker.com/network/proxy/#use-environment-variables https://docs.docker.com/config/daemon/systemd/#httphttps-proxy Kubernetes services like apiserver, controller and Continue Reading
  • IPMI SOL access configuration for Ubuntu OS Posted in: DataCenter Automation - BIOS accessibility via ipmitool: Baud-rate speed used for SOL access is Volatile Bit Rate (kbps). It requires serial communication redirection to be enabled in BIOS. Serial communication speed should match Baud-rate speed. Serial console access: Configuring the console login process Identify the serial port for the BMC from dmesg:  $ dmesg |grep tty  [    0.000000] console [tty0] enabled  [    1.073325] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A  [    1.094732] 00:03: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A  [    1.115064] 0000:00:16.3: ttyS1 at I/O 0x9080 (irq = 17) is a 16550A ttyS1 is for the Continue Reading