Red Hat Enterprise Linux 6 Load Balancer Administration
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Chapter 1. Load Balancer Add-On Overview
1.1. A Basic Load Balancer Add-On Configuration
1.1.1. Data Replication and Data Sharing Between Real Servers
1.1.1.1. Configuring Real Servers to Synchronize Data
1.2. A Three-Tier Load Balancer Add-On Configuration
1.3. Load Balancer Add-On Scheduling Overview
1.3.1. Scheduling Algorithms
1.3.2. Server Weight and Scheduling
1.4. Routing Methods
1.4.1. NAT Routing
1.4.2. Direct Routing
1.4.2.1. Direct Routing and the ARP Limitation
1.5. Persistence and Firewall Marks
1.5.1. Persistence
1.5.2. Firewall Marks
1.6. Load Balancer Add-On — A Block Diagram
1.6.1. Load Balancer Add-On Components
1.6.1.1. pulse
1.6.1.2. lvs
1.6.1.3. ipvsadm
1.6.1.4. nanny
1.6.1.5. /etc/sysconfig/ha/lvs.cf
1.6.1.6. Piranha Configuration T ool
1.6.1.7. send_arp
Chapter 2. Initial Load Balancer Add-On Configuration
2.1. Configuring Services on the LVS Router
2.2. Setting a Password for the Piranha Configuration T ool
2.3. Starting the Piranha Configuration T ool Service
2.3.1. Configuring the Piranha Configuration T ool Web Server Port
2.4. Limiting Access T o the Piranha Configuration T ool
2.5. T urning on Packet Forwarding
2.6. Configuring Services on the Real Servers
Chapter 3. Setting Up Load Balancer Add-On
3.1. T he NAT Load Balancer Add-On Network
3.1.1. Configuring Network Interfaces for Load Balancer Add-On with NAT
3.1.2. Routing on the Real Servers
3.1.3. Enabling NAT Routing on the LVS Routers
3.2. Load Balancer Add-On via Direct Routing
3.2.1. Direct Routing and arptables_jf
3.2.2. Direct Routing and iptables
3.3. Putting the Configuration T ogether
3.3.1. General Load Balancer Add-On Networking T ips
3.3.1.1. T roubleshooting Virtual IP Address Issues
3.4. Multi-port Services and Load Balancer Add-On
3.4.1. Assigning Firewall Marks
3.5. Configuring FT P
3.5.1. How FT P Works
3.5.2. How T his Affects Load Balancer Add-On Routing
3.5.3. Creating Network Packet Filter Rules
3.5.3.1. Rules for Active Connections
3.5.3.2. Rules for Passive Connections
3.6. Saving Network Packet Filter Settings
Chapter 4 . Configuring the Load Balancer Add-On with Piranha Configuration Tool
4.1. Necessary Software
4.2. Logging Into the Piranha Configuration T ool
4.3. CONT ROL/MONIT ORING
4.4. GLOBAL SET T INGS
4.5. REDUNDANCY
4.6. VIRT UAL SERVERS
4.6.1. T he VIRT UAL SERVER Subsection
4.6.2. REAL SERVER Subsection
4.6.3. EDIT MONIT ORING SCRIPT S Subsection
4.7. Synchronizing Configuration Files
4.7.1. Synchronizing lvs.cf
4.7.2. Synchronizing sysctl
4.7.3. Synchronizing Network
