OCSSD This process is the most critical process of clusterware,CSSD An exception, the system restarts immediately.The 10.2.0.5/11.2.0.4 Linux test environment test uses kill-9 <OCSSD pid> to observe that the system restarts immediately, and the Init 6 effect is the same as haha. This also found a vulnerability:/u01/app/oracle/product/crs/bin/ocssd.bin This process is an Oracle user, using the Oracle user to kill process, the Linux reboot ~ ~ ~
This is not a security loophole, haha.
[[email protected] ~]$ ps-ef|grep CSSD -Output in 10.2.0.5: Root 3342 1 0 22:05? &NBSP;00:00:00/BIN/SH/ETC/INIT.D/INIT.CSSD fatalroot 4254 3342 0 22 : 06? &NBSP;00:00:00/BIN/SH/ETC/INIT.D/INIT.CSSD oprocdroot 4267 3342 0 2 2:06? &NBSP;00:00:00/BIN/SH/ETC/INIT.D/INIT.CSSD oclsomonroot 4296 3342 0 22:06? &NBSP;00:00:00/BIN/SH/ETC/INIT.D/INIT.CSSD daemonroot 4761 4267 0 2 2:06? 00:00:00/sbin/runuser-l oracle-c/bin/sh-c ' cd/u01/app/oracle/product/crs/log/rac1/cssd/o Clsomon; Ulimit-c Unlimited; /u01/app/oracle/product/crs/bin/oclsomon | | Exit $? ' Oracle 4762 4761 0 22:06? &NBSP;00:00:00/BIN/SH-C cd/u01/app/oracle/product/crs/log/rac1/cssd/Oclsomon; Ulimit-c Unlimited; /u01/app/oracle/product/crs/bin/oclsomon | | Exit $?oracle 4870 4296 0 22:06? 00:00:00/u01/app/oracle/product/crs/bin/ocssd.bin
[[email protected] ~]$ ps-ef|grep CSSD--output root in 11.2.0.4.0 3313 1 0 22:23? 00:00:00/u01/app/11.2.0/grid/bin/cssdmonitorroot 3332 1 0 22:23? 00:00:00/u01/app/11.2.0/grid/bin/cssdagentgrid 3345 1 0 22:23? 00:00:06/u01/app/11.2.0/grid/bin/ocssd.bin grid 5863 5318 0 22:38 pts/0 00:00:00 grep cssd[[email protected] ~] $ kill-9 3345
RAC OCSSD process is killed causing system restart-non-root user can restart OS
