Short answer: this is perfectly normal. What happened was that an IP address was added to the interface without a differentiating label.
Believe it or not, the "ifconfig" application is strongly discouraged because it has a tendency to dramatize situations like this. It would probably have been removed years ago if not for legacy support.
Anyway, if you want to understand a bit more about what is happening, take a look at this iproute2 documentation. They explain that although all alias addresses are secondary addresses, the inverse is not necessarily true.
Then try the following:
Code:
[root@uscltest2 ~]# ip addr show dev eth0
[root@uscltest2 ~]# ip addr add 10.200.218.86/24 broadcast 10.200.218.255 dev eth0
[root@uscltest2 ~]# ip addr
[root@uscltest2 ~]# ifconfig
[root@uscltest2 ~]# ip addr add 10.200.218.87/24 broadcast 10.200.218.255 label eth0:alias dev eth0
[root@uscltest2 ~]# ip addr
[root@uscltest2 ~]# ifconfig
You will notice that after the first add, the output of "ip addr" showed the address, but the output of "ifconfig" did not. Additionally, when you added a label the second time, the output of "ip addr" still shows the address, but the output of "ifconfig" also show our new label. (which only says "eth0:alias" because we told it to - it could literally be anything)
After this little demo, reset things to normal:
Code:
[root@uscltest2 ~]# ip addr del 10.200.218.86/24 dev eth0
[root@uscltest2 ~]# ip addr del 10.200.218.87/24 dev eth0
Hi,
I have a Redhat Cluster Suite with 2 nodes, using option "Multicast HeartBeating" on clumembd, whith default IP: 225.0.0.11
The cluster member names are:
# grep node /etc/hosts
192.168.100.1 node1
192.168.100.2 node2
My problem is that the Multicast IP is relating to other network... (1 Reply)
Hi All,
One small request. In UNIX/LINUX we can have our own aliases in .bashrc file. My doubt is when we add a new alias and if it is tried in already opened terminals it will not work, may be it is not going to recognise. Bit when we use the same alias in new terminal it will work. I... (1 Reply)
HI All,
I have a small question/clarification/doubt . Does anyone know how to provide alias in the mails that come from Unix servers.
Like i have a Unix server that generates status mails every hour for a scheduled job , it sends me mails with status with the ID in from field as... (3 Replies)
Hi,
I am relatively new to Sun Solaris. I am installing 2 node cluster and when I was installing cluster suite 3.2 2/08, it is giving me this error as "Conflict - Incomplete version detected".
Please help me in this regard and also suggest me any valuable point to consider before going ahead... (3 Replies)
hi to all members in this forums .. Nice to meet you...
i only have a questions about command utility of "dd":
for example i will type:
pico trial
this is my file.
and save it and type chmod a+x trial
can there be a way that instead of typing:
dd if=trial of=trial.copy conv=ucase... (3 Replies)
HI
How can i configure fence_cisco_ucs with redhat cluster suite.
i was trying to configure fencing aganet with red ahat cluster suite
i issued command
# /usr/sbin/fence_vmware_soap -a 172.22.90.61 -l admin -p duc2Cisco -o reboot
then i got below error:
Failed: You have to... (0 Replies)
Hello,
I need to rediret the directory location at run time as:-
If I type cd /dir1/dir2 then it should take me to /dir1/dir3 at run time.
Inside dir1, both dir2 and dir3 directories are present.
Could anyone guild me over it?
Thanks
Shubham (5 Replies)
Discussion started by: shubh05
5 Replies
LEARN ABOUT CENTOS
clusvcadm
clusvcadm(8) Red Hat Cluster Suite clusvcadm(8)NAME
clusvcadm - Cluster User Service Administration Utility
SYNOPSIS
clusvcadm [-d <service> ] [-e <service> ] [-l] [-u] [-S] [-m <member> ] [-r <service> ] [-R <service> ] [-M <service> ] [-Z <service> ] [-U
<service> ] [-s <service> ] [-v]
DESCRIPTION
The clusvcadm command allows an administrator to enable, disable, relocate, and restart user services in a cluster. In order to perform
cluster service operations, the cluster daemons must be running (and have quorum) on the member system on which the command is invoked.
OPTIONS -d <service>
Stops and disables the user service named service
-e <service>
Enables and starts the user service named service
-l Lock services in preparation for cluster shutdown. This should only be used if the administrator intends to perform a global, clus-
ter wide shutdown. This prevents services from starting (but not stopping, like -Z does). Once the cluster quorum is dissolved,
this state is reset. If a new instance of rgmanager boots while others are locked, the behavior is undefined.
-u Unlock resource group managers. This allows services to start again.
-S Display whether the resource group managers are locked or not. This can be used to verify the correct operation of the -l and -u
options, but is only useful for debugging.
-m <member>
When used in conjunction with either the -e or -r options, this specifies the preferred target member on which to start the service.
-r <service>
Relocates the user service named service to another cluster member.
-R <service>
Restarts the user service named service on the cluster member on which it is currently running.
-M <service>
Use a special "migration" operation to move the user service named service to another cluster member. Currently, this is only use-
ful for virtual machines. Use of migration usually requires special configuration of the local virtual machine manager in order to
work correctly.
-Z <service>
Freezes the service named service on the cluster member on which it is currently running. This will prevent status checks of the
service as well as failover in the event the node fails or rgmanager is stopped.
-U <service>
Unfreezes the user service named service on the cluster member on which it is currently running. This will re-enable status checks.
-s <service>
Stops the service named service until a member transition or until it is enabled again.
-v Display version information and exit.
NOTES
Executing -U (unfreeze) on a service which was frozen in the started state while the service owner is offline results in an undefined (and
possibly dangerous) condition. Manually ensure all resources are clear before doing this.
SEE ALSO clustat(8)
Jan 2005 clusvcadm(8)
06-15-2010
It would probably have been removed years ago if not for legacy support.