Using LogicalHostname

Hello
I am Trying to Set up a two-node cluster.
I am pasting the contents of both the /etc/hosts and ifconfig -a output.
Node 1
# cat /etc/hosts
# Internet host table
127.0.0.1 localhost
192.18.75.223 shaw.red.iplanet.com shaw loghost
#192.18.75.223 shaw loghost
#192.18.75.221 telstra # Cluster Node
192.18.75.221 telstra.red.iplanet.com telstra # Cluster Node
192.18.75.155 meadows.red.iplanet.com meadows
# pwd
/usr/cluster/bin
# ls
claccess clreslogicalhostname clsnmpmib libimsinfo2.so scha_cluster_get scshutdown
cldev clresource clsnmpuser pmfadm scha_control scsnapshot
cldevice clresourcegroup clta pnmd scha_resource_get scstat
cldevicegroup clresourcetype cltelemetryattribute sccheck scha_resource_setstatus scswitch
cldg clressharedaddress cluster scconf scha_resourcegroup_get sctelemetry
clinterconnect clrg clvxvm scdidadm scha_resourcetype_get scversions
clintr clrs hactl scdpm scinstall scvxinstall
clnas clrslh haget scdsbuilder scnas scwtadm
clnasdevice clrssa halockrun scdsconfig scnasdir
clnode clrt hasp_check scdscreate scprivipadm
clq clsetup hatimerun sceventmib scrgadm
clquorum clsnmphost libimsinfo.so scgdevs scsetup
# pwd
/usr/cluster/bin
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
eri0: flags=9000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,NOFAILOVER> mtu 1500 index 2
inet 192.18.75.223 netmask ffffff00 broadcast 192.18.75.255
groupname sc_ipmp0
ether 0:3:ba:2f:8b:6e
qfe0: flags=1008843<UP,BROADCAST,RUNNING,MULTICAST,PRIVATE,IPv4> mtu 1500 index 4
inet 172.16.0.129 netmask ffffff80 broadcast 172.16.0.255
ether 8:0:20:b6:84:ac
qfe1: flags=1008843<UP,BROADCAST,RUNNING,MULTICAST,PRIVATE,IPv4> mtu 1500 index 3
inet 172.16.1.1 netmask ffffff80 broadcast 172.16.1.127
ether 8:0:20:b6:84:ad
clprivnet0: flags=1009843<UP,BROADCAST,RUNNING,MULTICAST,MULTI_BCAST,PRIVATE,IPv4> mtu 1500 index 5
inet 172.16.4.1 netmask fffffe00 broadcast 172.16.5.255
ether 0:0:0:0:0:1
Node 2:
# cat /etc/hosts
# Internet host table
127.0.0.1 localhost
192.18.75.221 telstra.red.iplanet.com telstra loghost
#192.18.75.221 telstra loghost
192.18.75.223 shaw.red.iplanet.com shaw # Cluster Node
#192.18.75.223 shaw # Cluster Node
192.18.75.155 meadows.red.iplanet.com meadows
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
eri0: flags=9000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,NOFAILOVER> mtu 1500 index 2
inet 192.18.75.221 netmask ffffff00 broadcast 192.18.75.255
groupname sc_ipmp0
ether 0:3:ba:2d:0:a7
eri0:1: flags=1040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4> mtu 1500 index 2
inet 192.18.75.155 netmask ffffff00 broadcast 192.18.75.255
qfe0: flags=1008843<UP,BROADCAST,RUNNING,MULTICAST,PRIVATE,IPv4> mtu 1500 index 4
inet 172.16.0.130 netmask ffffff80 broadcast 172.16.0.255
ether 8:0:20:bc:c0:cc
qfe1: flags=1008843<UP,BROADCAST,RUNNING,MULTICAST,PRIVATE,IPv4> mtu 1500 index 3
inet 172.16.1.2 netmask ffffff80 broadcast 172.16.1.127
ether 8:0:20:bc:c0:cd
clprivnet0: flags=1009843<UP,BROADCAST,RUNNING,MULTICAST,MULTI_BCAST,PRIVATE,IPv4> mtu 1500 index 5
inet 172.16.4.2 netmask fffffe00 broadcast 172.16.5.255
ether 0:0:0:0:0:2
Question:
1) If i want to add say another say 4 Logical Host names, to this existing two-node cluster . I ONLY have IP Addresses with me, how do I go about creating 4 More Logical Hostnames ?.
2) How about the interfaces, do I need to do use ifconfig to configure the interface ?
Thanks a lot in Advance

Hi,
logical hosts are usually setup as part of a resource group that defines a highly available service. See this doc for more information: http://docs.sun.com/app/docs/doc/819-0703/6n343k6fu?a=view
In order to make these new IP addresses available for the cluster, you should add them into all(!) /etc/hosts //etc/ipnodes) files, so that they are available even if your nameservice should fail. You must not configure these IP addresses using ifconfig. THe cluster will do this for you once you have configured the logical host as part of a resource group and start it.
BTW: you have configured both cluster interconnects on your qfe card. You could achieve a minimal higher availability by moving one of them to your onboard port and the public net to the qfe card. So, if your whole qfe card should fail, you still have a working cluster interconnect. On the other hand, in that case you would also have no more public net:-( and your service would failover anyway. Hmmm, I havfe to think this through. The docs state that you should spread your cluster interconnects to different NICs.
Hope that helps
Hartmut

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Hi,
I have problems to register a LogicalHostname to a Zone Cluster.
Here my steps:
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# clzc configure test01
clzc:test01> info
zonename: test01
zonepath: /export/zones/test01
autoboot: true
brand: cluster
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pool: test
limitpriv:
scheduling-class:
ip-type: shared
enable_priv_net: true
sysid:
name_service not specified
nfs4_domain: dynamic
security_policy: NONE
system_locale: en_US.UTF-8
terminal: vt100
timezone: Europe/Berlin
node:
physical-host: farm01a
hostname: test01a
net:
address: 172.19.115.232
physical: e1000g0
node:
physical-host: farm01b
hostname: test01b
net:
address: 172.19.115.233
physical: e1000g0
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# clrslh create -g test01-rg -Z test01 -h test01 test01-ip
clrslh: farm01b:test01 - The hostname test01 is not authorized to be used in this zone cluster test01.
clrslh: farm01b:test01 - Resource contains invalid hostnames.
clrslh: (C189917) VALIDATE on resource test01-ip, resource group test01-rg, exited with non-zero exit status.
clrslh: (C720144) Validation of resource test01-ip in resource group test01-rg on node test01b failed.
clrslh: (C891200) Failed to create resource "test01:test01-ip".
Here the entries in /etc/hosts from farm01a and farm01b
172.19.115.119 farm01a # Cluster Node
172.19.115.120 farm01b loghost
172.19.115.232 test01a
172.19.115.233 test01b
172.19.115.252 test01
Hope somebody could help.
regards,
Sascha
Edited by: sbrech on 13.05.2009 11:44

When I scanned my last example of a zone cluster, I spotted, that I added my logical host to the zone clusters configuration.
create -b
set zonepath=/zones/cluster
set brand=cluster
set autoboot=true
set enable_priv_net=true
set ip-type=shared
add inherit-pkg-dir
set dir=/lib
end
add inherit-pkg-dir
set dir=/platform
end
add inherit-pkg-dir
set dir=/sbin
end
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set dir=/usr
end
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set address=applh
set physical=auto
end
add dataset
set name=applpool
end
add node
set physical-host=deulwork80
set hostname=deulclu
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set address=172.16.30.81
set physical=e1000g0
end
end
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set root_password=nMKsicI310jEM
set name_service=""
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set security_policy=NONE
set system_locale=C
set terminal=vt100
set timezone=Europe/Berlin
end
I am refering to:
add net
set address=applh
set physical=auto
end
So as far as I can see this is missing from your configuration. Sorry for leading you in the wrong way.
Detlef

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Hi There,
I've setup a failover cluster with 2 servers. The cluser IP is set up as a logicalhostname and each server has two network cards configured as IPMP groups.
I can test the IPMP failover on each server by failing a network card and checkign the IP address fails over.
I can test the logicalhost name failsover by switchign the resource group over from one node to the other
BUT
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Nov 4 15:09:06 nova cl_runtime: WARNING: Path nova:ce1 - gambit:bge1 initiation encountered errors, errno = 62. Remote node may be down or unreachable through this path.
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ova
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Hi,
looking at the messages, the problem seems to be with the network setup on nova. I would suggest to try to configure the logical IP on nova manually to see if that works. If that does not it should tell you where the problem is.
Or are you saying that manually switching the RG works, but when a node dies and cluster switches the RG it doesn't. That would be strange.
You should also post the status of your network on nova in the failure case. There might be something wrong with your IPMP setup. Or has the public net failed completely when you killed the other node?
Regards
Hartmut

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