Devops Mojo

  We can perform from a NIM server on a NIM client. usplsaxphxd002(root)# nim -o uptime usplxaxphxp004MGM 0042-023 nim: "uptime" is not a valid NIM operation         valid operations:                 activate, allocate, alt_disk_install, alt_disk_mig,                 bos_inst, change, check, chwpar, create, cust, dbts,                 deactivate, deallocate, define, deploy, destroy,                 diag, dkls_init, dtls_init, eject, fix_query,                 linux_inst, load, lppchk, lppmgr, lslpp, lswpar,                 maint, maint_boot, reboot, remove, reset, restvg,                 select, showdump, showlog, showres, snap, swts,               ...

 Processor affinity improves processor performance by reducing context switching. From AIX 6.1 TL5, the binding processor feature is available to applications running in shared LPAR.

 From HMC list the Port VLAN IDs and Additional VLAN IDs ( tagged ) associated with the NICs of a LPAR. Syntax is: #lshwres  -m      <Managed System> -r     <virtualio> --rsubtype     <eth> --level <lpar>  --filter "lpar_ids=" -F     slot_num:port_vlan_id:addl_vlan_ids -- header So the complete command in our case is: #lshwres -m USPLSVXPHXD002 -r virtualio --rsubtype eth --level lpar --filter lpar_names=dr-xprtam02 -F slot_num:port_vlan_id:addl_vlan_ids --header   hscroot@uxplxaophxd002:~> lshwres -m USPLSVXPHXD002 -r virtualio --rsubtype eth --level lpar --filter lpar_names=dr-xprtam02 -F slot_num:port_vlan_id:addl_vlan_ids --header slot_num:port_vlan_id:addl_vlan_ids 2:643: 3:511: 4:959:734 5:14: hscroot@uxplxaophxd002:~>

  On HMC - Lpar -> Manage Profile -> normal ->  On the system: We can see the below output. 'V' means virtual. After 'C', we can find the adapter id. # lscfg | grep ent   Model Implementation: Multiple Processor, PCI bus * ent17            U8202.E4D.065685T- V1-C98 -T1  * ent16            U8202.E4D.065685T-V1-C97-T1  * ent15            U8202.E4D.065685T-V1-C96-T1  * ent13            U8202.E4D.065685T-V1-C99-T1  * ent11            U8202.E4D.065685T-V1-C5-T1   * ent10            U8202.E4D.065685T-V1-C4-T1   * ent9             U8202.E4D.065685T - V1-C3 -T1   * ent8             U8202.E4D.065685T-V1-C2-T1 ww

  #chedition -list $ chedition -list standard $ $ uname -a AIX usplxaxphxp003 1 6 00F856854C00 $ $ date Thu Jul 21 09:10:30 EDT 2022 $ $

lshwres -r virtualio --rsubtype fc --level lpar -m Server-8204-E8A-SN0686A92 -F lpar_name,wwpns --header --filter lpar_names=sf03s03ggd06 lpar_name,wwpns sf03s03ggd06,"c0507600a74d0022,c0507600a74d0023" sf03s03ggd06,"c0507600a74d0020,c0507600a74d0021" sf03s03ggd06,"c0507600a74d001e,c0507600a74d001f" sf03s03ggd06,"c0507600a74d001c,c0507600a74d001d" Note: There are four FCS in this LPAR and each FCS is having two WWPNs since it is NPIV. 'c****' virtual fcs' wwpn start with.

 LPM ==== Moving a partition from one physical server to another without downtime. 1. NPIV - two wwpns for a FCS. LPM - good only with NPIV 1. create zoning with secondary wwpn SAN team will multi map the LUN on the other machine.

 dmidecode -t system [root@uscdcoie0056 ~]# dmidecode -t system # dmidecode 3.3 Getting SMBIOS data from sysfs. SMBIOS 2.7 present. Handle 0x0001, DMI type 1, 27 bytes System Information         Manufacturer: VMware, Inc.         Product Name: VMware7,1         Version: None         Serial Number: VMware-42 02 59 9f 9d 04 92 f7-7b 39 72 e5 6c 0f 61 ff         UUID: 9f590242-049d-f792-7b39-72e56c0f61ff         Wake-up Type: Power Switch         SKU Number: Not Specified         Family: Not Specified

  Linux: == Kernel parameters - how u will modify ? Check target level ? how to identify a physical system and vm ? hard and soft link ? files in /boot ? how to reduce a fs in rootvg ? how to increase a fs in rootvg ? how to remove paging space ? how to increase paging space ? how to list paging spaces available ? ways to check last reboot time ? some common ports in Linux ? how you will open them ? Advantages of systemd over init ? pid of init ? Default yum config file, default repository ? system logs location ? - /var/log/messages ? how you will modify the hostname of a Linux machine ? === AIX: ===== AIX migration from AIX 6.1 to AIX 7.1 ? VIOS patching ? A NPIV disk is faulty on vios client, how you will fix the issue ? HMCs and IBM Frames I use ? Backup tools in our environment ? RSCT daemon ? Schell scripts I have written ? AIX patching ? Live Partition Mobility ? Probable cause of NIM installation/migration failure ? -