Q&A about RHEL on z Systems BCP

Transcription

1 Filipe Miranda Global Lead for Red Hat Products on IBM z Systems and Power Systems Red Hat Inc. Q&A about RHEL on z Systems BCP 9.0

2 Topics for this session Red Hat in a nutshell Red Hat and IBM Collaboration RHEL installation process summary on z Systems (using z/vm) User end *feeling* on RHEL for z Systems Administrators guide - is it different to do it on RHEL of z Systems? Q&A

3 Red Hat in a Nutshell * Red Hat Client Data, 2014

4 Red Hat Enterprise Linux Lifecycle

5 Red Hat and IBM Collaboration Decades of collaboration between Red Hat and IBM z Systems

6 RHEL on z installation process summary These files can be found at the images directory from the RHEL7.x installation tree kernel.img initrd.img redhat.exec generic.prm highly recommended to edit the PRM file locally in your desktop and then copy it to the z/vm Virtual Machine. This is how the stock generic.prm file would look like: ro ramdisk_size=40000 cio_ignore=all,!condev Example of generic.prm (consult your system s admin): ro ramdisk_size=40000 cio_ignore=all,!condev ip= :: :21:train8.redhat.com:enccw :none rd.znet=qeth, , , ,layer2=1 nameserver= nameserver= rd.dasd= inst.repo=

7 RHEL on z installation process summary To copy files over to z/vm, open a Linux terminal on your desktop: # ftp <FQDN for the z/vm> login <login> password <password> Example: site fix 80 bin put kernel.img KERNEL.IMG put initrd.img INITRD.IMG ascii put redhat.exec REDHAT.EXEC put generic.prm GENERIC.PRM

8 RHEL on z installation process summary

9 RHEL on z installation process summary 5 7 6

10 User end *feeling* when using RHEL on z When working with RHEL on z things to be aware of: - Name of the network interfaces is different: enccw : <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN qlen 1000 link/ether 02:00:01:00:00:e6 brd ff:ff:ff:ff:ff:ff inet /21 brd scope global enccw valid_lft forever preferred_lft forever - Disk names when using ECKD disks are different: Disk /dev/dasda: 2461 MB, bytes, sectors Units = sectors of 1 * 4096 = 4096 bytes Sector size (logical/physical): 4096 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes - Additional tools specific to the s390x platform are available: s390utils-debuginfo.s390x : Debug information for package s390utils s390utils.s390x : Utilities and daemons for IBM System/z s390utils-base.s390x : S390 base tools s390utils-cmsfs.s390x : CMS file system tools s390utils-cmsfs-fuse.s390x : CMS file system based on FUSE s390utils-cpuplugd.s390x : Daemon that manages CPU and memory resources s390utils-devel.s390x : Development files s390utils-iucvterm.s390x : z/vm IUCV terminal applications s390utils-mon_statd.s390x : Monitoring daemons for Linux in z/vm s390utils-osasnmpd.s390x : SNMP sub-agent for OSA-Express cards s390utils-zdsfs.s390x : z/os data set access based on FUSE s390utils-ziomon.s390x : S390 ziomon tools

11 User end *feeling* when using RHEL on z Most of the other administrative tasks are the same on all platforms: To groups and users is the same on all platforms: groupadd tsgroup useradd tsuser1 -m -s /usr/bin/ts-shell -g ts-shell -G tsgroup To change directories and files permissions and ownership is the same on all platforms: ls -l testfile -rw-r--r--. 1 root root 0 May 8 10:50 testfile chown user1.user1 testfile chmod 700 testfile ls -l testfile -rwx user1 user1 0 May 8 10:50 testfile To delete users is the same on all platforms userdel user1

12 Red Hat System Administrators Guide For all other questions related to system administration please refer to the System Administrator s Guide: System_Administrators_Guide/index.html

13 Draft Document for Review May 6, :19 am SG Additional References Not yet released, planned for last quarter of 2015 Front cover The Virtualization Cookbook for Linux on IBM z Systems Lydia Parziale Berthold Gunreben Filipe Miranda Paul W Novak Ken Werner Redbooks

14 Filipe Miranda Global Lead for Red Hat Products on IBM z Systems and Power Systems Red Hat Inc.