cybernet

Updated sudo packages that fix two bugs are now available for Red Hat Enterprise Linux 6. The sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root. This update fixes the following bugs: * A race condition in the signal handling code caused the sudo process to become unresponsive after receiving the SIGCHLD signal. This update modifies the signal handling to prevent the race condition, which ensures that the sudo process no longer hangs under these circumstances. (BZ#802440) * The "-l" option is used to list allowed and forbidden commands for the invoking user or for the user specified by the "-U" option. However, previously, the getgrouplist() function incorrectly checked the invoker's group membership instead of the membership of the specified user. Consequently, using the "sudo" command with both the "-l" and "-U" options listed privileges granted to any group the ...

New  RHEL6-based OpenVZ  kernel has a new memory management model, which supersedes  User beancounters . It is called  VSwap . Now you can set two primary parameters:  physpages  and  swappages , while all the other beancounters become secondary. physpages This parameter limits the physical memory (RAM) available to processes inside a container. The  barrier  is ignored, and the  limit  sets the limit. Currently the user memory and the page cache are accounted into  physpages . swappages This parameter limits the amount of swap space which can be used for processes inside a container. The  barrier  is ignored, and the  limit  sets the limit. The sum of physpages.limit and swappages.limit limits the maximum amount of allocated memory which can be used by a container. When physpages limit is reached, memory pages belonging to the container are pushed out to so called virtual swap ( vswap ). The d...