This document describes how to adjust the database proxy configuration in the console, including the proxy specification, AZ, and node quantity.
You have enabled the database proxy. For more information, see Enabling Database Proxy.
Changing different configuration items has different impacts, some of which will not cause a momentary disconnection, while some will. The specific change items and their impacts are as detailed below:
Scenario 1: Changing the proxy specification but not AZ or node quantity
Proxy Specification | AZ | Node Quantity | Load Balancing Mode | Switch Time | Impact |
---|---|---|---|---|---|
Upgrade or downgrade | Unchanged | Unchanged | Automatic | During maintenance time | There will be a momentary disconnection lasting seconds. Make sure that your business has a reconnection mechanism. |
Upon upgrade completion | |||||
Manual | During maintenance time | ||||
Upon upgrade completion |
Scenario 2: Changing the node quantity but not proxy specification or AZ
Proxy Specification | AZ | Node Quantity | Load Balancing Mode | Switch Time | Impact |
---|---|---|---|---|---|
Unchanged | Unchanged | Increased | Automatic | During maintenance time | There will be a momentary disconnection lasting seconds. Make sure that your business has a reconnection mechanism. |
Upon upgrade completion | |||||
Manual | - | There will be no momentary disconnections. | |||
Decreased | Automatic | During maintenance time | There will be a momentary disconnection lasting seconds. Make sure that your business has a reconnection mechanism. | ||
Upon upgrade completion | |||||
Manual | During maintenance time | ||||
Upon upgrade completion |
Scenario 3: Changing the AZ and node quantity but not proxy specification
Proxy Specification | AZ | Node Quantity | Load Balancing Mode | Switch Time | Impact |
---|---|---|---|---|---|
Unchanged | Increased | Increased | Automatic | During maintenance time | There will be a momentary disconnection lasting seconds. Make sure that your business has a reconnection mechanism. |
Upon upgrade completion | |||||
Manual | - | There will be no momentary disconnections. | |||
Decreased | Automatic | During maintenance time | There will be a momentary disconnection lasting seconds. Make sure that your business has a reconnection mechanism. | ||
Upon upgrade completion | |||||
Manual | During maintenance time | ||||
Upon upgrade completion | |||||
Decreased | Increased | Automatic | During maintenance time | ||
Upon upgrade completion | |||||
Manual | During maintenance time | ||||
Upon upgrade completion | |||||
Decreased | Automatic | During maintenance time | |||
Upon upgrade completion | |||||
Manual | During maintenance time | ||||
Upon upgrade completion | |||||
Changed | Increased | Automatic | During maintenance time | ||
Upon upgrade completion | |||||
Manual | During maintenance time | ||||
Upon upgrade completion | |||||
Decreased | Automatic | During maintenance time | |||
Upon upgrade completion | |||||
Manual | During maintenance time | ||||
Upon upgrade completion |
Note:
- If you select Upon upgrade completion, after the configuration is adjusted, the system will automatically switch to the new configuration.
- If you select During maintenance time, after the configuration is adjusted, the system will switch the configuration during the specified maintenance time period.
- If you select During maintenance time but need to switch the configuration earlier due to your business requirements, after the configuration is adjusted, you can go to Database Proxy > Overview > Basic Info > Status/Task and click Complete Now after Waiting for switch (after upgrade).
- If you select manual rebalance after the configuration adjustment, perform the operation in Overview > Connection Address on the Database Proxy tab after the configuration is adjusted.
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