Coyote Point Systems Equalizer Specifikace Strana 108
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- Tabulka s obsahem
- ŘEŠENÍ PROBLÉMŮ
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Hodnocené. / 5. Na základě hodnocení zákazníků
Chapter 6: Administering Virtual Clusters
96 Equalizer Installation and Administration Guide
3. If it is not already checked, select the advanced check box in the flags section of the screen in
the right frame. The max_conn field is near the middle of the right-hand screen, as shown in
the following figure:
4. Set max_conn to a positive integer between 0 and 65535. A zero (the default) indicates that the
maximum connections limit set on the cluster applies to this server.
5. Set other parameters and flags for the server as desired; see Chapter 6, “Administering Virtual
Clusters”, in the Installation and Administration Guide, for more details.
6. Select commit to create or modify the server.
Using a Hot Spare in a Cluster with a Maximum Connections Limit
When a maximum connections limit is set on all the servers in a cluster (either by setting max_conn
on the cluster or on each individual server), it is often desirable to define a hot spare server for the
cluster, so that any attempted connections to the cluster that occur after the max_conn limit has
been reached are directed to the hot spare instead of being refused or sent to the server anyway
because of a persistent connection.
In this case, the hot spare could be configured to return a page to the client that contains text
explaining the reason the connection has been refused. For example, the hot spare could return a
page that says “All servers are currently busy -- please try again later.”.
The hot spare server should be configured as follows:
•Set max_conn to zero (0), so that all connection requests sent to the hot spare are accepted.
- Equalizer 1
- Installation and 1
- Administration Guide 1
- Contents 3
- In This Guide 11
- Typographical Conventions 12
- Where to Go for More Help 12
- 1 Overview 13
- Introducing Equalizer 13
- Load Balancing UDP Services 14
- Chapter 1: Overview 16
- Geographic Load Balancing 17
- Figure 4) 19
- Equalizer’s Network Ports 20
- Using Reserved IP Addresses 26
- 2 Installing Equalizer 31
- Before You Install Equalizer 31
- Serial Connection 33
- Setting the Time Zone 37
- Setting the Date and Time 37
- Upgrading Equalizer Software 38
- Shutting Down Equalizer 39
- 4 Accessing Browser Controls 45
- Figure 17 The login screen 46
- Figure 19 Main menu bar 47
- Licensing Equalizer 51
- Requesting a License Offline 53
- Modifying System Parameters 55
- Failover Configurations First 64
- Enabling Outbound NAT 65
- Managing Stale Connections 65
- 4. Click the commit button 67
- Configuring Static Routes 69
- Modifying a Static Route 70
- Deleting a Static Route 70
- Managing System Time and NTP 71
- Enabling or Disabling NTP 72
- Selecting an NTP Server 72
- Saving Your Configuration 73
- Backing Up Your Configuration 74
- Rebooting Equalizer 75
- Working with Virtual Clusters 78
- Adding a Virtual Cluster 79
- Deleting a Virtual Cluster 86
- Enabling Persistent Sessions 92
- HTTPS Header Insertion 97
- Front-End-Https: on 98
- Adding a Server to a Cluster 100
- Deleting a Server 102
- Managing Servers 105
- Displaying Equalizer Status 112
- Displaying Server Information 119
- Displaying Site Information 124
- Configuring Plot Logs 125
- Exporting Usage Statistics 126
- 10.0.0.10) or 129
- Enabling the SNMP Agent 131
- MIB Description 132
- 8 Working with Match Rules 135
- Why Match Rules? 135
- Match Rule Processing 136
- Match Expressions 137
- Match Bodies 139
- Match Rule Definitions 139
- Managing Match Rules 140
- The Default Match Rule 141
- Creating a New Match Rule 141
- Match Functions 144
- Figure62 URI components 146
- Match Function Notes 148
- Example Match Rules 151
- Envoy Overview 161
- Enabling Envoy 164
- domain 165
- Adding a Geographic Cluster 167
- Working with Sites 169
- Envoy Configuration Worksheet 172
- A Using Server Agents 173
- Introducing Server Agents 173
- Enabling Agents 173
- Writing Server Agents 174
- B Using Reserved IP Addresses 177
- Equalizers 178
- C Regular Expression Format 179
- Learning About Atoms 179
- Creating a Bracket Expression 180
- Matching Expressions 181
- D HTTPS Cluster Certificates 183
- Clearing Secure Key Storage 193
- Using IIS with Equalizer 194
- Supported Cipher Suites 197
- Xcel I Card 198
- E Troubleshooting 199
- Equalizer Doesn’t Boot 199
- Appendix E: Troubleshooting 200
- Context Help Does Not Appear 202
- F License and Warranty 205
- G Additional Requirements 209
- Short-Circuit Protection 209
- Power Supply Cord 209
- Specifications 210
- °F, 5 - 40 °C 212
- Glossary 213
- 192.22.33.1 216
- ( 218
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