Red Hat NETWORK SATELLITE 5.3.0 Installation Manual

Also see for NETWORK SATELLITE 5.3.0 - CHANNEL MANAGEMENT: Installation guide Management guide Configuration guide Installation guide Release note

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Red Hat NETWORK SATELLITE 5.3.0 Installation Manual Manual pdf 72 page image

Chapter 8. Maintenance68db-control restore DIRNAMEThis not only restores the Embedded Database but first verifies the contents of the backup directoryusing md5sums. Once the restoration is complete, return to root user mode and restart the databaseand related services with these commands in this order:/usr/sbin/rhn-satellite start8.5. Cloning the Satellite with Embedded DBYou may limit outages caused by hardware or other failures by cloning the Satellite with EmbeddedDatabase in its entirety. The secondary Satellite machine can be prepared for use if the primary fails.To clone the Satellite, perform these tasks:1. Install RHN Satellite with Embedded Database (and a base install of Red Hat Enterprise Linux AS)on a separate machine, skipping the SSL Certificate generation step.2. Back up the primary Satellite's database daily using the commands described in Section 8.4.2,“Backing up the Database”. If this is done, only changes made the day of the failure will be lost.3. Establish a mechanism to copy the backup to the secondary Satellite and keep these repositoriessynchronized using a file transfer program such as rsync. If you're using a SAN, copying isn'tnecessary.4. Use RHN DB Control's restore option to import the duplicate data.5. If the primary Satellite fails, transfer the SSL certificates from it to the secondary. Refer to theDeploying the CA SSL Public Certificate to Clients section of the RHN Client Configuration Guidefor precise instructions.6. Change DNS to point to the new machine or configure your load balancer appropriately.8.6. Establishing Redundant Satellites with Stand-Alone DBIn keeping with the cloning option available to Satellite with Embedded Database, you may limitoutages on Satellites with Stand-Alone Database by preparing redundant Satellites. Unlike cloning aSatellite with Embedded Database, redundant Satellites with Stand-Alone Database may be run asactive, as well as standby. This is entirely up to your network topology and is independent of the stepslisted here.To establish this redundancy, first install the primary Satellite normally, except the value specified inthe Common Name field for the SSL certificate must represent your high-availability configuration,rather than the hostname of the individual server. Then:1. Prepare the Stand-Alone Database for failover using Oracle's recommendations for building afault-tolerant database. Consult your database administrator.2. Install RHN Satellite with Stand-Alone Database (and a base install of Red Hat EnterpriseLinux AS) on a separate machine, skipping the database configuration, database schema, SSLcertificate, and bootstrap script generation steps. Include the same RHN account and databaseconnection information provided during the initial Satellite install and register the new Satellite.