Introduction to the classroom environment

In this exercise, you access and use the lab environment and browse the available resources.

Outcomes

You will be familiar with the servers in the lab environment, and should be able to log in and browse the available resources.

As the student user on the workstation machine, use the lab command to prepare your system for this exercise.

This command ensures that the environment is configured correctly for creating your Ansible Playbooks in the future.

[student@workstation ~]$ lab start ansible-prep

1. Verify that you can reach all SAP servers. For each server, explore the memory size, disks, and number of CPUs. The SAP servers to review are hana1, hana2, and nodea-noded.

   An example follows for hana1:

   1. Log in to hana1:

      [student@workstation ~]$ ssh hana1
      ...output omitted...
      

   2. Display the memory and swap space:

      [student@localhost ~]$ free -m
                    total        used        free      shared  buff/cache   available
      Mem:          48087         314       47563          16         208       47306
      Swap:             0           0           0
      

   3. Display the attached disks:

      [student@localhost ~]$ lsblk
      NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
      vda    252:0    0   200G  0 disk
      ├─vda1 252:1    0     1M  0 part
      ├─vda2 252:2    0   100M  0 part /boot/efi
      └─vda3 252:3    0 199,9G  0 part /
      vdb    252:16   0    50G  0 disk
      

   4. Display the configured CPUs:

      [student@localhost ~]$ lscpu
      Architecture:        x86_64
      CPU op-mode(s):      32-bit, 64-bit
      Byte Order:          Little Endian
      CPU(s):              6
      On-line CPU(s) list: 0-5
      Thread(s) per core:  1
      Core(s) per socket:  1
      Socket(s):           6
      NUMA node(s):        1
      Vendor ID:           GenuineIntel
      CPU family:          6
      Model:               85
      Model name:          Intel(R) Xeon(R) Gold 6248 CPU @ 2.50GHz
      Stepping:            7
      CPU MHz:             2494.056
      BogoMIPS:            4988.11
      Virtualization:      VT-x
      Hypervisor vendor:   KVM
      Virtualization type: full
      L1d cache:           32K
      L1i cache:           32K
      L2 cache:            4096K
      L3 cache:            16384K
      NUMA node0 CPU(s):   0-5
      Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon rep_good nopl xtopology cpuid tsc_known_freq pni pclmulqdq vmx ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid mpx avx512f avx512dq rdseed adx smap clflushopt clwb avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves arat umip pku ospke avx512_vnni md_clear arch_capabilities
      

2. Repeat steps 1.1 to 1.4 for hana2 and nodea.

Finish

On the workstation machine, use the lab command to complete this exercise. This step is important to ensure that resources from previous exercises do not impact upcoming exercises.

[student@workstation ~]$ lab finish ansible-prep