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System Administration Guide: Oracle Solaris Containers-Resource Management and Oracle Solaris Zones     Oracle Solaris Legacy Containers
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Document Information


Part I Resource Management

1.  Introduction to Solaris 10 Resource Management

2.  Projects and Tasks (Overview)

3.  Administering Projects and Tasks

4.  Extended Accounting (Overview)

5.  Administering Extended Accounting (Tasks)

6.  Resource Controls (Overview)

7.  Administering Resource Controls (Tasks)

8.  Fair Share Scheduler (Overview)

9.  Administering the Fair Share Scheduler (Tasks)

10.  Physical Memory Control Using the Resource Capping Daemon (Overview)

11.  Administering the Resource Capping Daemon (Tasks)

12.  Resource Pools (Overview)

13.  Creating and Administering Resource Pools (Tasks)

14.  Resource Management Configuration Example

15.  Resource Control Functionality in the Solaris Management Console

Part II Zones

16.  Introduction to Solaris Zones

17.  Non-Global Zone Configuration (Overview)

18.  Planning and Configuring Non-Global Zones (Tasks)

19.  About Installing, Halting, Cloning, and Uninstalling Non-Global Zones (Overview)

20.  Installing, Booting, Halting, Uninstalling, and Cloning Non-Global Zones (Tasks)

21.  Non-Global Zone Login (Overview)

22.  Logging In to Non-Global Zones (Tasks)

23.  Moving and Migrating Non-Global Zones (Tasks)

24.  Oracle Solaris 10 9/10: Migrating a Physical Oracle Solaris System Into a Zone (Tasks)

25.  About Packages and Patches on an Oracle Solaris System With Zones Installed (Overview)

26.  Adding and Removing Packages and Patches on an Oracle Solaris System With Zones Installed (Tasks)

27.  Oracle Solaris Zones Administration (Overview)

What's New in This Chapter?

Global Zone Visibility and Access

Process ID Visibility in Zones

System Observability in Zones

Non-Global Zone Node Name

File Systems and Non-Global Zones

The -o nosuid Option

Mounting File Systems in Zones

Unmounting File Systems in Zones

Security Restrictions and File System Behavior

Non-Global Zones as NFS Clients

Use of mknod Prohibited in a Zone

Traversing File Systems

Restriction on Accessing A Non-Global Zone From the Global Zone

Networking in Shared-IP Non-Global Zones

Shared-IP Zone Partitioning

Shared-IP Network Interfaces

IP Traffic Between Shared-IP Zones on the Same Machine

Oracle Solaris IP Filter in Shared-IP Zones

IP Network Multipathing in Shared-IP Zones

Oracle Solaris 10 8/07: Networking in Exclusive-IP Non-Global Zones

Exclusive-IP Zone Partitioning

Exclusive-IP Data-Link Interfaces

IP Traffic Between Exclusive-IP Zones on the Same Machine

Oracle Solaris IP Filter in Exclusive-IP Zones

IP Network Multipathing in Exclusive-IP Zones

Device Use in Non-Global Zones

/dev and the /devices Namespace

Exclusive-Use Devices

Device Driver Administration

Utilities That Do Not Work or Are Modified in Non-Global Zones

Utilities That Do Not Work in Non-Global Zones

SPARC: Utility Modified for Use in a Non-Global Zone

Running Applications in Non-Global Zones

Resource Controls Used in Non-Global Zones

Fair Share Scheduler on an Oracle Solaris System With Zones Installed

FSS Share Division in a Non-Global Zone

Share Balance Between Zones

Extended Accounting on an Oracle Solaris System With Zones Installed

Privileges in a Non-Global Zone

Using IP Security Architecture in Zones

IP Security Architecture in Shared-IP Zones

Oracle Solaris 10 8/07: IP Security Architecture in Exclusive-IP Zones

Using Oracle Solaris Auditing in Zones

Configuring Audit in the Global Zone

Configuring User Audit Characteristics in a Non-Global Zone

Providing Audit Records for a Specific Non-Global Zone

Core Files in Zones

Running DTrace in a Non-Global Zone

About Backing Up an Oracle Solaris System With Zones Installed

Backing Up Loopback File System Directories

Backing Up Your System From the Global Zone

Backing Up Individual Non-Global Zones on Your System

Determining What to Back Up in Non-Global Zones

Backing Up Application Data Only

General Database Backup Operations

Tape Backups

About Restoring Non-Global Zones

Commands Used on an Oracle Solaris System With Zones Installed

28.  Oracle Solaris Zones Administration (Tasks)

29.  Upgrading an Oracle Solaris 10 System That Has Installed Non-Global Zones

30.  Troubleshooting Miscellaneous Oracle Solaris Zones Problems

Part III lx Branded Zones

31.  About Branded Zones and the Linux Branded Zone

32.  Planning the lx Branded Zone Configuration (Overview)

33.  Configuring the lx Branded Zone (Tasks)

34.  About Installing, Booting, Halting, Cloning, and Uninstalling lx Branded Zones (Overview)

35.  Installing, Booting, Halting, Uninstalling and Cloning lx Branded Zones (Tasks)

36.  Logging In to lx Branded Zones (Tasks)

37.  Moving and Migrating lx Branded Zones (Tasks)

38.  Administering and Running Applications in lx Branded Zones (Tasks)



Global Zone Visibility and Access

The global zone acts as both the default zone for the system and as a zone for system-wide administrative control. There are administrative issues associated with this dual role. Since applications within the zone have access to processes and other system objects in other zones, the effect of administrative actions can be wider than expected. For example, service shutdown scripts often use pkill to signal processes of a given name to exit. When such a script is run from the global zone, all such processes in the system will be signaled, regardless of zone.

The system-wide scope is often needed. For example, to monitor system-wide resource usage, you must view process statistics for the whole system. A view of just global zone activity would miss relevant information from other zones in the system that might be sharing some or all of the system resources. Such a view is particularly important when system resources such as CPU are not strictly partitioned using resource management facilities.

Thus, processes in the global zone can observe processes and other objects in non-global zones. This allows such processes to have system-wide observability. The ability to control or send signals to processes in other zones is restricted by the privilege PRIV_PROC_ZONE. The privilege is similar to PRIV_PROC_OWNER because the privilege allows processes to override the restrictions placed on unprivileged processes. In this case, the restriction is that unprivileged processes in the global zone cannot signal or control processes in other zones. This is true even when the user IDs of the processes match or the acting process has the PRIV_PROC_OWNER privilege. The PRIV_PROC_ZONE privilege can be removed from otherwise privileged processes to restrict actions to the global zone.

For information about matching processes by using a zoneidlist, see the pgrep(1) and pkill(1) man pages.