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Installing a hub
28
4.2. Deploying a hub
Resource Manager provides 3 optons for adding hub hosts, to support different security scenarios. The following table
associates the security scenarios with the names of the options.
Table 4.1.
Option Name Security Scenario Notes
root user pass-
word
• The Resource Manager administrator has
the root password of the hub host.
• After the hub is added, the zenoss user on
the master host can log in as root on the
hub host.
After the hub is added, all communications
with the hub host use keys for authentication.
The hub host's root password is not stored
or reused.
root user SSH
keys
• The Resource Manager administrator does
not have the root password of the hub
host.
• After the hub is added, the zenoss user on
the master host can log in as root on the
hub host.
After the hub is added, this option works the
same way as the preceding option.
zenoss user SSH
keys
• The Resource Manager administrator does
not have the root password of the hub
host.
• The zenoss user on the master host can
not log in as root on the hub host.
This is the most secure option.
Note
When Resource Manager is started for the first time, the Distributed Collector ZenPack generates a new,
unique key pair for user zenoss, with the OpenSSH ssh-keygen command. You may use the generated key
pair to deploy a hub, or replace the pair with a new or different key pair before deploying a hub. For more
information about Distributed Collector security, refer to the chapter titled "Distributed Collector" in Zenoss
Service Dynamics Extended Montitoring.
4.2.1. Root user password
Follow these steps to install a new hub using the root password of the hub host.
1. Log in to the Resource Manager browser interface as a user with ZenManager or Manager permissions.
2. Click Advanced > Collectors.
The browser displays the deployed hubs and collectors.
3. From the action menu next to Hubs, select Add Hub....
The Add Hub page displays.
4. Select root user password.
5. Provide values for the following fields:
- Zenoss Service Dynamics 1
- Resource Manager 1
- Installation 1
- 1. Audience 6
- 2. Organization 6
- 3. Related guides 6
- 4. Additional information 7
- 5. We welcome your comments 7
- 1.1. Installation packages 8
- 1.3. Hardware requirements 8
- 1.3.2. Storage considerations 9
- Installation considerations 11
- 2.2. Preparation tasks 13
- 2.5. Install MySQLTuner 16
- 2.7. Start Resource Manager 17
- 2.10. Getting started 19
- 2.10.2. Add devices 21
- 2.10.2.3. LDAP configuration 23
- Chapter 3. Adding a collector 24
- 3.2.1. Preparing to install 25
- 3.2.2. Root user password 27
- 3.2.3. Root user SSH keys 27
- 3.2.4. Zenoss user SSH keys 28
- 3.2.4.3. Configure SSH access 30
- Adding a collector 32
- Chapter 4. Installing a hub 33
- 4.2. Deploying a hub 35
- 4.2.2. Root user SSH keys 36
- 4.2.3. Zenoss user SSH keys 38
- 4.2.3.3. Configure SSH access 40
- Chapter 5. Performance tuning 42
- 5.4. Memory caching 43
- 5.7.1. Message persistence 45
- 5.7.2. Message compression 45
- 5.7.3. Message TTL 46
- 5.7.4. Queue expiration 46
- 7.2. Preparing to upgrade 51
- 7.5. Post-installation steps 55
- 7.7. Migrating data 56
- 7.11. Upgrading remote hubs 58
- 7.13. Performance tuning 60
- 4.2.4, ZenUp in use 61
- 8.2. Preparing to upgrade 62
- 8.6. Upgrading remote hubs 68
- 8.8. Performance tuning 70
- 4.2.4, ZenUp not in use 71
- 9.2. Preparing to upgrade 72
- 9.7. Upgrading remote hubs 80
- 9.9. Performance tuning 82
- A.1. Prepare to upgrade 83
- A.2. Stop Resource Manager 83
- A.3. Stop RabbitMQ Server 84
- A.4. Upgrade RabbitMQ Server 85
- A.5. Start Resource Manager 85
- Upgrading RabbitMQ Server 86
- 2. Start Resource Manager 86
- 3. Start remote hubs, if any 86
- *Port number is configurable 87
- This portlet can be removed 87
- /var/lib/zends/zends.sock 88
- Event Server Daemons 89
- Hub Daemons 90
- Collector Daemons 90
- 389 (LDAP) 95
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