# Got fatal error 1236 from master when reading data from binary log

**URL:** <https://forums.percona.com/t/got-fatal-error-1236-from-master-when-reading-data-from-binary-log/7343>\
**Category:** Other MySQL® Questions\
**Created:** [December 11, 2019, 11:29am UTC](https://forums.percona.com/t/got-fatal-error-1236-from-master-when-reading-data-from-binary-log/7343 "2019-12-11T11:29:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![San9940](https://avatars.discourse-cdn.com/v4/letter/s/9dc877/32.png) [@San9940](https://forums.percona.com/u/San9940)\
**Post date:** [December 11, 2019, 11:29am UTC](https://forums.percona.com/t/got-fatal-error-1236-from-master-when-reading-data-from-binary-log/7343/1 "2019-12-11T11:29:57Z")

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Getting below error whenever an existing slave tries to align to new-master when old-master goes down. We usually do slave promotion to master, suppose we have master\<–slave1/slave2 after performing DB promotion for slave2 to master, topology becomes slave2(new-master)\<-- slave1. Slave1 replication breaks when it start try to replicate to its new-master. Please suggest if you have ever experienced same issue and solved it.

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Seconds\_Behind\_Master: 0  
Master\_SSL\_Verify\_Server\_Cert: No  
Last\_IO\_Errno: 1236  
Last\_IO\_Error: Got fatal error 1236 from master when reading data from binary log: ‘The slave is connecting using CHANGE MASTER TO MASTER\_AUTO\_POSITION = 1, but the master has purged binary logs containing GTIDs that the slave requires.’  
Last\_SQL\_Errno: 0  
Last\_SQL\_Error:  
Replicate\_Ignore\_Server\_Ids:  
Master\_Server\_Id: 168954657  
Master\_UUID: d53c996f-17f4-11e8-bffd-06345d1b6210  
Master\_Info\_File: /mnt/db/mysql/master.info  
SQL\_Delay: 0  
SQL\_Remaining\_Delay: NULL  
Slave\_SQL\_Running\_State: Slave has read all relay log; waiting for more updates  
Master\_Retry\_Count: 86400  
Master\_Bind:  
Last\_IO\_Error\_Timestamp: 180424 15:47:09  
Last\_SQL\_Error\_Timestamp:  
Master\_SSL\_Crl:  
Master\_SSL\_Crlpath:  
Retrieved\_Gtid\_Set:  
Executed\_Gtid\_Set: 0e197096-73bb-11e7-a12a-06ca36b1e1ed:1-99439426,  
34aeff8f-f073-11e7-a56c-0214b016c4b8:1-183468,  
418b5f15-47d6-11e8-a517-02633c772f1c:1-287,  
5ad8c560-db75-11e7-9251-06309d9466a8:1-152007,  
7c491fc7-d9e4-11e7-bdce-020546577760:1-11407,  
7df2a614-db71-11e7-9b3d-020546577760:1-76705617,  
b1d0436a-1239-11e8-af2a-022fcffdfaf0:1-384671,  
c4a41e14-0b60-11e8-9f91-06345d1b6210:1-49588,  
c7fe5ac2-8bfd-11e7-8ccb-02e178303485:1-2156  
Auto\_Position: 1  
Replicate\_Rewrite\_DB:  
Channel\_Name: