User`s guide

174
This chapter describes those tasks that are intended for advanced system administrators who
would like to obtain deeper knowledge about Parallels Containers capabilities.
In This Chapter
Configuring Capabilities ....................................................................................................... 174
Creating Customized Containers........................................................................................... 178
Changing System Time From Container............................................................................... 185
Obtaining Server ID From Inside a Container ...................................................................... 186
Enabling VPN for Container................................................................................................. 186
Managing Server Resources Parameters............................................................................... 187
Setting Immutable and Append Flags for Container Files and Directories........................... 188
Customizing /proc/meminfo Output Inside Container.......................................................... 189
Loading iptables Modules..................................................................................................... 191
Creating Configuration Files for New Linux Distributions .................................................. 193
Configuring Capabilities
Capabilities are sets of bits that permit of splitting the privileges typically held by the root user
into a larger set of more specific privileges. The POSIX capabilities are defined by a draft IEEE
standard (IEEE Std 1003.1e); they are not unique to Linux or Parallels Server Bare Metal. When
the Linux or Parallels Server Bare Metal documentation says “requires root privileges”, in
nearly all cases it really means “requires a specific capability”.
This section documents the tasks that can be achieved using per-Container capabilities in
Parallels Server Bare Metal and all configurable capabilities.
C HAPTER 9
Advanced Tasks