Never mind. Reading comprehension is lacking this morning. Failed to see you could reach VM itself.
Thomas Ambros zEnterprise Operating Systems zEnterprise Systems Management 518-436-6433 -----Original Message----- From: Linux on 390 Port [mailto:[email protected]] On Behalf Of Chase, John Sent: Thursday, October 30, 2014 10:01 To: [email protected] Subject: Linux guests on DR machine not reachable Cross-posted to IBMVM and LINUX390 lists Greetings. We're bringing up z/VM and Linux guests for the first time at a D/R exercise. Since we have our own CBU "warm site", we create an isolated network to be used for the D/R exercise. The primary internal network is prefixed 10.1 and the isolated D/R network is prefixed 10.2. After z/VM (6.2, non-SSI) IPLs, we logon TCPMAINT and edit PROFILE TCPIP to change the HOME and DEFAULTNET IP addresses from 10.1.xxx.yyy to 10.2.xxx.yyy, then shut down and restart TCPIP. z/VM is now reachable from non-mainframe devices plugged into the isolated network (e.g., Ping from a laptop works fine; 3270 emulator sessions establish via non-ICC ports). Next we login to a Linux (RHEL 6.3 and 6.5) guest (3270 console), where we had pre-configured a "clone" of the ifcfg-eth0 file to specify 10.2 (instead of 10.1) in all the appropriate places. We rename ("mv") the "prod" and "D/R" copies so that ifcfg-eth0 now specifies 10.2 instead of 10.1 in all the right places. We stop and restart network services, but Linux is not ping-able from outside. OK let's reboot Linux. No change; still can't ping Linux from outside the mainframe but within the isolated network. OK, we'll just bounce the whole virtual machine (SIGNAL SHUTDOWN followed by XAUTOLOG from OPERATOR). That didn't work, either. We didn't notice any network-related error message as Linux came up again. Not much to go on, but can anybody think of what we might have missed in reconfiguring Linux to "play" in the isolated (10.2) network? TIA, -jc- ********************************************************************** Information contained in this e-mail message and in any attachments thereto is confidential. If you are not the intended recipient, please destroy this message, delete any copies held on your systems, notify the sender immediately, and refrain from using or disclosing all or any part of its content to any other person. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ This communication may contain privileged and/or confidential information. It is intended solely for the use of the addressee. If you are not the intended recipient, you are strictly prohibited from disclosing, copying, distributing or using any of this information. If you received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. This communication may contain nonpublic personal information about consumers subject to the restrictions of the Gramm-Leach-Bliley Act. You may not directly or indirectly reuse or redisclose such information for any purpose other than to provide the services for which you are receiving the information. 127 Public Square, Cleveland, OH 44114 If you prefer not to receive future e-mail offers for products or services from Key send an e-mail to mailto:[email protected] with 'No Promotional E-mails' in the SUBJECT line. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
