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Operating Systems AIX Moving VIOS, LPAR's, HMC to different subnet Post 302892780 by spricer on Friday 14th of March 2014 01:21:56 PM
Old 03-14-2014
Maybe I don't understand network settings completely:
In HMC's network settings currently there are two adapters with next :
-eth0 (assuming direct connection to FSP) , Private, Autodetection, enabled DHCP server (192.168.128.2-192.168.255.254), greyed out settings for IPv4 (192.168.128.1)
-eth1 (assuming management port), Open, Autodetection, DHCP disabled, IPv4 192.168.1.121, 255.255.255.0.
Routing settings: Default Gateway 192.168.1.1 for eth1
No tagging involved.
VIOS and LPAR;s are on same subnet as eth1.

Now I figured that default gateway has to be the same one that of VIOS and LPAR's are using in order for HMC to connect to them via console.
You are right that IP settings for eth1 does not matter but than I can not reach remotely HMC unless I change route, which in turn makes problem for HMC accessing LPAR's via console.
Now I tried attaching cable to eth2 and connecting it to new subnet, added static NET route 192.168.1.0, 192.168.50.1, 255.255.255.0 for eth2 and everything works fine (192.168.50.1 is new subnet gateway). I can remotely access HMC and still HMC can access LPAR's via console.
So my question now is if you missconfigure IP settings on VIOS how can I access missconfigured system or better question how you can access VIOS that does not have network interface? e.g. in KVM I do not care about network settings at all as long as I have physical access to hypervisor (I can access guests via console).
Thanks
 

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FENCE_AGENT(8)						      System Manager's Manual						    FENCE_AGENT(8)

NAME
fence_lpar - Fence agent for IBM LPAR DESCRIPTION
fence_lpar accepts options on the command line as well as from stdin. Fenced sends parameters through stdin when it execs the agent. fence_lpar can be run by itself with command line options. This is useful for testing and for turning outlets on or off from scripts. PARAMETERS
-o, --action=<action> Fencing Action (Default Value: reboot) -a, --ip=<ip> IP Address or Hostname This parameter is always required. -l, --username=<name> Login Name This parameter is always required. -p, --password=<password> Login password or passphrase -S, --password-script=<script> Script to retrieve password -x, --ssh SSH connection (Default Value: 1) -k, --identity-file=<filename> Identity file for ssh -n <id> Name of the partition Partition name -s <id> Name of the managed system Managed system name -H, --hmc-version=<version> Force HMC version to use (3 or 4) (Default Value: 4) -c, --command-prompt=<prompt> Force command prompt (Default Value: [':~>', ']$', '$ ']) -4, --inet4-only Forces agent to use IPv4 addresses only -6, --inet6-only Forces agent to use IPv6 addresses only -u, --ipport=<port> TCP port to use for connection with device -v, --verbose Verbose mode -D, --debug-file=<debugfile> Write debug information to given file -V, --version Display version information and exit -h, --help Display help and exit -C, --separator=<char> Separator for CSV created by operation list (Default Value: ,) --power-timeout Test X seconds for status change after ON/OFF (Default Value: 20) --shell-timeout Wait X seconds for cmd prompt after issuing command (Default Value: 3) --login-timeout Wait X seconds for cmd prompt after login (Default Value: 15) --power-wait Wait X seconds after issuing ON/OFF (Default Value: 0) --delay Wait X seconds before fencing is started (Default Value: 0) --retry-on Count of attempts to retry power on (Default Value: 1) ACTIONS
on Power on machine. off Power off machine. reboot Reboot machine. status This returns the status of the plug/virtual machine. list List available plugs with aliases/virtual machines if there is support for more then one device. Returns N/A otherwise. monitor Check if fencing device is running. List available plugs/virtual machines or get status of machine (if it does not support more). metadata The operational behavior of this is not known. STDIN PARAMETERS
action Fencing Action (Default Value: reboot) ipaddr IP Address or Hostname This parameter is always required. login Login Name This parameter is always required. passwd Login password or passphrase passwd_script Script to retrieve password secure SSH connection (Default Value: 1) identity_file Identity file for ssh partition Partition name managed Managed system name hmc_version Force HMC version to use (3 or 4) (Default Value: 4) cmd_prompt Force command prompt (Default Value: [':~>', ']$', '$ ']) inet4_only Forces agent to use IPv4 addresses only inet6_only Forces agent to use IPv6 addresses only ipport TCP port to use for connection with device verbose Verbose mode debug Write debug information to given file version Display version information and exit help Display help and exit separator Separator for CSV created by operation list (Default Value: ,) power_timeout Test X seconds for status change after ON/OFF (Default Value: 20) shell_timeout Wait X seconds for cmd prompt after issuing command (Default Value: 3) login_timeout Wait X seconds for cmd prompt after login (Default Value: 15) power_wait Wait X seconds after issuing ON/OFF (Default Value: 0) delay Wait X seconds before fencing is started (Default Value: 0) retry_on Count of attempts to retry power on (Default Value: 1) fence_lpar (Fence Agent) 2009-10-20 FENCE_AGENT(8)
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