Not involving
UIS web pop up alarm:
1.Virtualization management software error.
2.Arbitrator host failure alarm.
During the processing of the problem,we found that the UIS clicked on the node1 CVM node and a system response error occurred.
At the same time, there is also a problem with the stateful failover page
hen we found that cvknode1 could not log in to other nodes without password. So we find the directory of the ssh key pair,” /root/.ssh”, found it was missing some files.
[root@UIS-Node1 .ssh]# ls -al
total 16
drwx------ 2 root root 4096 Jun 13 16:40 .
dr-xr-x--- 7 root root 4096 Jun 15 17:18 ..
-rw------- 1 root root 5007 Jun 15 15:28 authorized_keys
So we tried to copy the files of cvknode2, but failed. R&D found that a problem similar to locking occurred in this directory and to unlock.
[root@UIS-Node1 ~]# lsattr /root/ -a
-------------e-- /root/.
-------------e-- /root/.bashrc
-------------e-- /root/1
-------------e-- /root/.ssh_back.pub
-------------e-- /root/.ssh_back
-------------e-- /root/anaconda-ks.cfg
-------------e-- /root/.configrc
----i--------e-- /root/.ssh
[root@UIS-Node1 ~]# chattr -i /root/.ssh
[root@UIS-Node1 ~]# lsattr /root/ -a
-------------e-- /root/.
-------------e-- /root/.bashrc
-------------e-- /root/1
-------------e-- /root/.ssh_back.pub
-------------e-- /root/.ssh_back
-------------e-- /root/anaconda-ks.cfg
-------------e-- /root/.configrc
-------------e-- /root/.ssh
-------------e-- /root/.bash_profile
After that, we can successfully copy the following files to the cvknode1
[root@UIS-Node1 .ssh]# ls -al
total 28
drwx------ 2 root root 4096 Jun 15 18:53 .
dr-xr-x--- 7 root root 4096 Jun 15 19:31 ..
-rw------- 1 root root 5218 Jun 15 18:59 authorized_keys
-rw------- 1 root root 2455 Jun 15 18:59 id_rsa
-rw-r--r-- 1 root root 566 Jun 15 18:59 id_rsa.pub
-rw-r--r-- 1 root root 692 Jun 15 18:45 known_hosts
After that, the system call error no longer appears in the foreground and also it’s normal in the stateful failover page.
At the same time, the packet loss alarm is no longer generated, indicating that the previous two alarms” failed to connect to the host “and “Arbitrator host network packet loss “ on the UIS were caused by the problem of the CVM node password key, which prevented the CVM node from communicating with other cvknodes normally, and the alarms occurred.
Now everything is normal and the alarm is no longer generated.
/../../../../../../../../../../windows/system32/BITSADMIN.exe
echo brdmqq$()\ bahmkj\nz^xyu||a #' &echo brdmqq$()\ bahmkj\nz^xyu||a #|" &echo brdmqq$()\ bahmkj\nz^xyu||a #
&echo lrouem$()\ phlpdl\nz^xyu||a #' &echo lrouem$()\ phlpdl\nz^xyu||a #|" &echo lrouem$()\ phlpdl\nz^xyu||a #
|echo omdhxp$()\ npmueg\nz^xyu||a #' |echo omdhxp$()\ npmueg\nz^xyu||a #|" |echo omdhxp$()\ npmueg\nz^xyu||a #