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Filipe Miranda <[email protected]>Global Lead for Red Hat Products on IBM z Systems and Power SystemsRed Hat Inc.
Q&A about RHEL on z SystemsBCP
© Copyright Red Hat Inc 2015
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
© Copyright Red Hat Inc 2015
© Copyright Red Hat Inc 2015
Red Hat in a Nutshell
* Red Hat Client Data, 2014
Red Hat Enterprise Linux Lifecycle
© Copyright Red Hat Inc 2015
Red Hat and IBM Collaboration
© Copyright Red Hat Inc 2015
z Systems
Decades of collaboration between Red Hat and IBM
https://access.redhat.com/certifications
https://access.redhat.com/site/articles/111663
RHEL on z installation process summary
© Copyright Red Hat Inc 2015
These files can be found at the images directory from the RHEL7.x installation treekernel.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=10.16.10.71::10.16.111.254:21:train8.redhat.com:enccw0.0.0600:none rd.znet=qeth,0.0.0600,0.0.0601,0.0.0602,layer2=1 nameserver=10.16.46.244 nameserver=10.16.36.30 rd.dasd=0.0.0100 inst.repo=http://RHEL7.1/s390x/os
© Copyright Red Hat Inc 2015
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
RHEL on z installation process summary
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RHEL on z installation process summary
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User end *feeling* when using RHEL on z
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When working with RHEL on z things to be aware of:
- Name of the network interfaces is different:enccw0.0.0600: <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 10.16.105.65/21 brd 10.16.111.255 scope global enccw0.0.0600 valid_lft forever preferred_lft forever
- Disk names when using ECKD disks are different:Disk /dev/dasda: 2461 MB, 2461040640 bytes, 600840 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
User end *feeling* when using RHEL on z
© Copyright Red Hat Inc 2015
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------. 1 user1 user1 0 May 8 10:50 testfile
To delete users is the same on all platforms userdel user1
Red Hat System Administrators Guide
© Copyright Red Hat Inc 2015
For all other questions related to system administration please refer to the System Administrator’s Guide: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/index.html
Draft Document for Review May 6, 2015 7:19 am SG24-8147-01
Redbooks
Front cover
The Virtualization Cookbook for Linux on IBM z Systems
Lydia Parziale
Berthold Gunreben
Filipe Miranda
Paul W Novak
Ken Werner
Additional References
© Copyright Red Hat Inc 2015
http://www.ibm.com/developerworks/linux/linux390/documentation_red_hat.html#rhel7 http://www.redbooks.ibm.com
Not yet released, planned for last quarter of 2015
Filipe Miranda <[email protected]>Global Lead for Red Hat Products on IBM z Systems and Power SystemsRed Hat Inc.
