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MySQL Replication Slave I/O error upon API Gateway restart on MySql8 and Gateway 10

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Article ID: 195804

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Updated On:

Products

CA API Gateway API SECURITY CA API Gateway Precision API Monitoring Module for API Gateway (Layer 7) CA API Gateway Enterprise Service Manager (Layer 7) STARTER PACK-7 CA Microgateway

Issue/Introduction



If restart mysql on one node after setting up replication, the following error occurs.

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[System] [MY-010562] [Repl] Slave I/O thread for channel '': connected to master '[email protected]:3306',replication started in log 'ssgbin-log.000263' at position 195
[ERROR] [MY-010557] [Repl] Error reading packet from server for channel '': Lost connection to MySQL server during query (server_errno=2013)

The 2 mysql nodes keep restarting themselves by turn.

Cause

Should be due to mysql bug #30774692: MYSQL CRASHES WITH SLAVE_COMPRESSED_PROTOCOL=ON

Environment

Release : 10.0

Component : API GATEWAY

Resolution

Before the new patch or version to release, the following workaround will fix the issue,

  1.  change the following line in /opt/SecureSpan/Appliance/create_slave.sh
    MASTER_COMPRESSION_ALGORITHMS='zlib,uncompressed', 
    to 
    MASTER_COMPRESSION_ALGORITHMS='uncompressed',
  2. use the new create_slave.sh to rebuild the replication (on both nodes)

Additional Information

https://github.com/mysql/mysql-server/commit/3bb12a7a564265c5f149c887253af903ebbf77a9

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