7. Monitoring...................................................................................................................................119
7.1. Prerequisites...................................................................................................................119
7.2. Red Hat Network Monitoring Daemon (rhnmd)...........................................................119
7.2.1. Probes requiring the daemon ..........................................................................120
7.2.2. Installing the Red Hat Network Monitoring Daemon.....................................120
7.2.3. Configuring SSH.............................................................................................121
7.2.4. Installing the SSH key ....................................................................................121
7.3. Notifications...................................................................................................................122
7.3.1. Creating Notification Methods........................................................................122
7.3.2. Receiving Notifications...................................................................................123
7.3.3. Redirecting Notifications ................................................................................123
7.3.4. Filtering Notifications.....................................................................................124
7.3.5. Deleting Notification Methods........................................................................124
7.4. Probes.............................................................................................................................124
7.4.1. Managing Probes ............................................................................................125
7.4.2. Establishing Thresholds..................................................................................125
7.4.3. Monitoring the RHN Server............................................................................126
7.5. Troubleshooting .............................................................................................................126
7.5.1. Examining Probes with rhn-catalog..........................................................126
7.5.2. Viewing the output of rhn-runprobe...........................................................127
A. Command Line Config Management Tools.............................................................................129
A.1. Red Hat Network Configuration Client....................................................................129
A.1.1. Listing Config Files........................................................................................129
A.1.2. Getting a Config File......................................................................................129
A.1.3. Viewing Config Channels ..............................................................................129
A.1.4. Differentiating between Config Files.............................................................130
A.1.5. Verifying Config Files....................................................................................130
A.2. Red Hat Network Configuration Manager...............................................................130
A.2.1. Creating a Config Channel.............................................................................131
A.2.2. Adding Files to a Config Channel..................................................................131
A.2.3. Differentiating between Latest Config Files..................................................132
A.2.4. Differentiating between Various Versions......................................................132
A.2.5. Downloading All Files in a Channel..............................................................133
A.2.6. Getting the Contents of a File........................................................................133
A.2.7. Listing All Files in a Channel ........................................................................133
A.2.8. Listing All Config Channels ..........................................................................134
A.2.9. Removing a File from a Channel...................................................................134
A.2.10. Deleting a Config Channel...........................................................................134
A.2.11. Determining the Number of File Revisions.................................................134
A.2.12. Updating a File in a Channel........................................................................135
A.2.13. Uploading Multiple Files at Once................................................................135
B. RHN API Access.........................................................................................................................137
B.1. Using the auth Class and Getting the Session...............................................................137
B.2. Obtaining the system_id................................................................................................137
B.3. Determining the sid.......................................................................................................137
B.4. Viewing the cid..............................................................................................................137
B.5. Getting the sgid .............................................................................................................138
B.6. Sample API Script.........................................................................................................138
