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Managing DX Storage Administrators and Users

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Option Name volPluginURL vols Default none none volumeRecovery- 0 Suspend wakeAfter 28800 (8 hours) Description to automatically assign storage volumes. Set to 0 to include all disk devices. Location of the volume identification tar file plugin if different from the default IO script. Specifies the volume storage devices that DX Storage can use. This field is required for the operation of a node. The recommended setting, vols = all, causes DX Storage to use all volumes except the USB flash drive. You can also set vols to a space-separated list of drive identifiers. DX Storage uses standard Linux volume identifiers like /dev/ sda, /dev/sdb, and so on. Set to 1 to disable volume recovery and recovery behavior. Set to 0 (default) to allow normal volume recovery and recovery behavior. This parameter should be set to the same value for all nodes in a cluster. Number of seconds of inactivity before an idle node becomes active again in power saving mode. 6.2. Managing DX Storage Administrators and Users DX Storage by default defines the following realms of users: • CAStor administrators who have write access to the Admin Console; in other words, these users can commit changes to the cluster configuration as discussed in Chapter 3, Managing the Cluster. You can also specify administrative SNMP users who have read-write access to the community password. • CAStor operators who can view the Admin Console but who cannot change cluster configuration settings. SNMP users have read-only access to the community password. Each realm is specified by a Python dictionary in the format: {administrators | operators} = {'username':'password', 'username':'password'} To enhance security, passwords can be encrypted as discussed in Section 6.2.3, "Securing the Administrator and Operator Passwords". 6.2.1. Defining CAStor administrators and SNMP Administrators This section discusses how to set up the administrators parameter to specify users with administrative access to the Admin Console and SNMP. Users in the CAStor administrators realm have write access to the Admin Console. Users in the snmp administrators realm have read-write SNMP passwords (that is, community strings). Copyright © 2010 Caringo, Inc. All rights reserved 36 Version 5.0 December 2010

Section	Page
DX Object Storage Administration Guide	1
Table of Contents	3
Chapter 1. Welcome to DX Storage	6
1.1. Overview of DX Storage	6
1.2. Components	6
1.3. About this Document	6
1.3.1. Audience	6
1.3.2. Scope	6
Chapter 2. Introduction to the Admin Console	7
2.1. Accessing the Admin Console	7
2.2. Initial View of the Admin Console	7
2.2.1. Viewing the Cluster Status Page	7
2.2.2. Viewing a Node's Status Page	8
2.3. Printing the Admin Console	8
2.4. Viewing License Information	8
Chapter 3. Managing the Cluster	10
3.1. Viewing the Cluster Status Page	10
3.2. Authenticating Cluster-Wide Actions	11
3.3. Shutting Down or Restarting the Cluster	12
3.4. Viewing Nodes in the Cluster	12
3.5. Searching for Nodes By IP Address	13
3.6. Searching for Nodes by Status	13
3.7. Choosing and Preserving Cluster Settings	13
3.7.1. Enabling Logging	15
3.7.2. Replication	15
3.7.3. Suspend	15
3.7.4. Power	15
3.7.5. Managing Tenants	15
3.8. Cluster Name	15
3.9. Cluster Multicast Address	15
3.10. % Used Indicator	15
Chapter 4. Managing Tenants	17
4.1. Terminology Related to Tenant Security	18
4.2. About the Default Cluster Domain	19
4.3. Security Privileges for Administrative Operations	20
4.4. Rules and Recommendations for Managing Tenants	21
4.5. Domain Naming Rules	21
4.6. Adding, Editing, or Deleting Tenants	22
4.7. Other Cluster Administrator Tasks	24
4.7.1. Using Administrative Override	25
4.7.1.1. Using Override to Delete an Object	25
4.7.1.2. Using Override to GET or APPEND User Lists	25
4.7.1.3. Using Override to Resolve Authorization Specification Issues	27
4.7.2. Working With Inaccessible Objects	28
Chapter 5. Managing Nodes	30
5.1. Viewing the Node Status Page	30
5.1.1. Shutting Down or Restarting a Node	30
5.1.2. Retiring or Identifying a Node	30
5.1.2.1. Retiring a Node or Volume	30
5.1.2.2. Identifying a Volume	31
5.1.3. Errors and Announcements	31
5.1.4. Additional Node Status Information	31
5.1.4.1. Hardware Status Reporting	33
5.2. Displaying Subcluster Information	34
Chapter 6. Configuring the Node	35
6.1. Option Names and Descriptions	35
6.2. Managing DX Storage Administrators and Users	41
6.2.1. Defining CAStor administrators and SNMP Administrators	41
6.2.2. Defining DX Storage Operators	42
6.2.3. Securing the Administrator and Operator Passwords	42
6.3. Managing Content Integrity Settings	43
6.3.1. autoRepOnWrite	43
6.3.2. repPriority	43
6.3.3. autoValidateRead	43
6.4. Managing Other Stream Replication Settings	44
6.4.1. minreps, maxreps, and defreps	44
6.4.2. hpStartDelay	44
6.5. Managing Volumes	44
6.5.1. device	45
6.5.2. policy	46
6.5.3. Specifying Exceptions	46
6.6. Configuring Power Management Settings	46
6.6.1. sleepAfter	46
6.6.2. wakeAfter	46
6.7. Managing Other Settings	46
6.7.1. consolePort	46
6.7.2. domainHeaders	46
6.7.3. loghost	47
6.7.4. timeSource	47
Chapter 7. Managing Volumes	49
7.1. Volume Expiration	49
7.2. Movement Between Nodes	49
7.3. Physical Errors	49
Appendix A. Implementation of Multi-Server Chassis	51
A.1. Configuration Parameters	51
A.1.1. Processes parameter	51
A.1.2. Network Setup parameters	51
A.1.3. Using the vols parameter	52
A.1.4. Using the subcluster parameter	52
A.2. Monitoring and Administration	53
Appendix B. Using SNMP with DX Storage	54
B.1. SNMP Management Information Base (MIB) Reference	54
B.2. Managing DX Storage Nodes	54
B.2.1. Shutdown Action for Nodes	54
B.2.2. Retire Action for Nodes and Volumes	54
B.2.2.1. Single Volumes	55
B.2.2.2. Entire Node	55
B.3. SNMP Tools and Monitoring Systems	55
B.3.1. Open Source Tools	55
B.3.2. SNMP Examples with DX Storage	56
B.3.3. SNMP Action OIDs	56
B.3.3.1. castorShutdownAction	56
B.3.3.2. castorRetireAction	56
B.3.3.3. castorLogLevelAction	56
B.3.3.4. castorSyslogHostAction	56
B.3.3.5. volumeRecoverySuspend	57
B.3.4. Practical SNMP with DX Storage	57
B.3.4.1. Health Monitoring	57
B.3.4.2. Capacity Monitoring	57
B.3.4.3. Client Activity Reporting	58
Appendix C. Upgrading a License or Cluster	59
C.1. Upgrading a License File	59
C.2. Software Upgrade Overview	59
C.2.1. Preparation	59
C.2.2. Upgrade Steps	60
C.2.2.1. Example Shutdown Script	60
C.2.2.2. Cluster Reboot	60
C.3. Back-out Steps	61
Appendix D. Troubleshooting	62
D.1. Restoring Domains and Buckets	62
D.1.1. Recovering a Deleted Domain	62
D.1.2. Recovering a Deleted Bucket	65
D.2. Resolving Duplicate Domain Names in a Mirrored or Disaster Recovery (DR) Cluster	66
D.2.1. Renaming a Domain in its Source Cluster (DR Cluster Conflict Only)	66
D.2.2. Renaming a Domain in a Mirrored or DR Cluster	67
D.3. Using DX Content Router to List Buckets and Objects	69
D.4. Boot Errors	69
D.5. Configuration	70
D.6. Operational Problems	70
Appendix E. Drive Identification API	72
E.1. Overview	72
E.2. Customization Steps	72
Appendix F. Customizing the Admin Console	73

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Version 5.0

December 2010

Option Name

Default

Description

to automatically assign storage volumes. Set

to 0 to include all disk devices.

volPluginURL

none

Location of the volume identification tar file

plugin if different from the default IO script.

vols

none

Specifies the volume storage devices that

DX Storage can use. This field is required for

the operation of a node.

The recommended setting,

vols = all

causes DX Storage to use all volumes

except the USB flash drive.

You can also set

vols

to a space-separated

list of drive identifiers. DX Storage uses

standard Linux volume identifiers like

/dev/

sda

/dev/sdb

, and so on.

volumeRecovery-

Suspend

Set to 1 to disable volume recovery and

recovery behavior. Set to 0 (default) to

allow normal volume recovery and recovery

behavior. This parameter should be set to

the same value for all nodes in a cluster.

wakeAfter

28800 (8 hours)

Number of seconds of inactivity before an

idle node becomes active again in power

saving mode.

6.2. Managing DX Storage Administrators and Users

DX Storage by default defines the following realms of users:

•

CAStor administrators

who have write access to the Admin Console; in other words, these

users can commit changes to the cluster configuration as discussed in

Chapter 3,

Managing the

Cluster

. You can also specify administrative SNMP users who have read-write access to the

community password.

•

CAStor operators

who can view the Admin Console but who cannot change cluster

configuration settings. SNMP users have read-only access to the community password.

Each realm is specified by a Python dictionary in the format:

{administrators | operators} = {'

username

':'

password

username

':'

password

To enhance security, passwords can be encrypted as discussed in

Section 6.2.3, “Securing the

Administrator and Operator Passwords”

6.2.1. Defining CAStor administrators and SNMP Administrators

This section discusses how to set up the

administrators

parameter to specify users with

administrative access to the Admin Console and SNMP.

Users in the

CAStor administrators

realm have write access to the Admin Console. Users in

the

snmp

administrators realm have read-write SNMP passwords (that is, community strings).