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使用 AWS DMS 将数据从 RDS Postgres（只读副本）复制到 Redshift 时出现复制槽错误

[英]Replication Slots error while replicating data from RDS Postgres(read replica) to Redshift using AWS DMS

 原文  2017-07-09 16:00:38  3   3    amazon-web-services/ amazon-redshift/ amazon-rds

问题描述

I'm trying to replicate data from a read replica of RDS Postgres to Amazon redshift using Amazon's Data Migration Service.我正在尝试使用 Amazon 的数据迁移服务将数据从 RDS Postgres 的只读副本复制到 Amazon redshift。 I was successfully able to perform migration tasks on the same source and destination, but I get the following error on my CloudWatch while doing a replication: Can you help me understand why am I getting this error?我能够在同一源和目标上成功执行迁移任务，但在执行复制时在 CloudWatch 上出现以下错误：您能帮我理解为什么我会收到此错误吗？

2017-07-09T14:45:24 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:45:24 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-199231648;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:24 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-148900000;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:24 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:45:24 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:45:24 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:45:24 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:45:25 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-146798752;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-144697504;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:45:25 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-94374048;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-44042400;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:45:25 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-41941152;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-39839904;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:45:25 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=6289248;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:45:25 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:45:25 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=226494304;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:25 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=224393056;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Subtask #0 ended (replicationtask_util.c:925)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Subtask #1 ended (replicationtask_util.c:925)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Subtask #2 ended (replicationtask_util.c:925)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Subtask #3 ended (replicationtask_util.c:925)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Subtask #4 ended (replicationtask_util.c:925)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Subtask #5 ended (replicationtask_util.c:925)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Subtask #6 ended (replicationtask_util.c:925)
2017-07-09T14:45:29 [TASK_MANAGER ]I: Task management thread terminated (replicationtask.c:2679)
2017-07-09T14:48:15 [TASK_MANAGER ]I: Task '6UJ63JGAHT7XDURNKAJPQATIXU' running CDC only in resume mode (replicationtask.c:805)
2017-07-09T14:48:15 [TASK_MANAGER ]I: Creating threads for all components (replicationtask.c:1279)
2017-07-09T14:48:15 [TASK_MANAGER ]I: CDC Control buffer stream size for QAYMAYIYZXMVMSBSGQRBYUUXQI is set to 5MB (subtask.c:772)
2017-07-09T14:48:15 [TASK_MANAGER ]I: CDC Control buffer stream size for 4UC3KDSEXMGBDPTTFU2DYBTMNE is set to 5MB (subtask.c:772)
2017-07-09T14:48:15 [TASK_MANAGER ]I: CDC Control buffer stream size for transaction_sorter is set to 5MB (subtask.c:772)
2017-07-09T14:48:15 [TASK_MANAGER ]I: Threads for all components were created (replicationtask.c:1425)
2017-07-09T14:48:15 [TASK_MANAGER ]I: Task initialization completed successfully (replicationtask.c:2265)
2017-07-09T14:48:15 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1751124128;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:15 [TARGET_APPLY ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:48:15 [TARGET_APPLY ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:48:15 [TARGET_APPLY ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:48:16 [TARGET_APPLY ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:48:16 [TARGET_APPLY ]I: Restore bulk state. Last bulk last record id - '0', last applied record id - '0', target confirmed record id - '0' (endpointshell.c:890)
2017-07-09T14:48:16 [TARGET_APPLY ]I: Target endpoint does not support direct insert in batch apply mode (bulk_apply.c:468)
2017-07-09T14:48:16 [TARGET_APPLY ]I: Working in bulk apply mode (endpointshell.c:897)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1749022880;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [TASK_MANAGER ]I: All stream components were initialized (replicationtask.c:2110)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Initial position is set to 'now' (postgres_endpoint_util.c:349)
2017-07-09T14:48:16 [TASK_MANAGER ]I: Starting subtask #1 (replicationtask_util.c:862)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Replication slot '6uj63jgaht7xdurn_00016400_ca44edb7_78eb_46e7_a992_7ffa63eb3b05' does NOT exist. (postgres_endpoint_capture.c:283)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Initial positioning requested is 'now' (postgres_endpoint_capture.c:285)
2017-07-09T14:48:16 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1695901856;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]E: Failed to execute statement: 'SELECT xlog_position FROM pg_create_logical_replication_slot('6uj63jgaht7xdurn_00016400_ca44edb7_78eb_46e7_a992_7ffa63eb3b05', 'test_decoding')' [122502] ODBC general error. (ar_odbc_stmt.c:2184)
2017-07-09T14:48:16 [TASK_MANAGER ]I: Starting subtask #2 (replicationtask_util.c:862)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]E: RetCode: SQL_ERROR SqlState: 55000 NativeError: 1 Message: ERROR: logical decoding requires wal_level >= logical;, Error while executing the query [122502] ODBC general error. (ar_odbc_stmt.c:2190)
2017-07-09T14:48:16 [TASK_MANAGER ]I: Starting subtask #3 (replicationtask_util.c:862)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]E: Creating replication slot '6uj63jgaht7xdurn_00016400_ca44edb7_78eb_46e7_a992_7ffa63eb3b05' failed. [122502] ODBC general error. (postgres_endpoint_capture.c:306)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]E: Error executing source loop [122502] ODBC general error. (streamcomponent.c:1473)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:48:16 [TASK_MANAGER ]E: Stream component failed at subtask 0, component st_0_QAYMAYIYZXMVMSBSGQRBYUUXQI [122502] ODBC general error. (subtask.c:1380)
2017-07-09T14:48:16 [TASK_MANAGER ]I: Starting subtask #4 (replicationtask_util.c:862)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]E: Stream component 'st_0_QAYMAYIYZXMVMSBSGQRBYUUXQI' terminated [122502] ODBC general error. (subtask.c:1545)
2017-07-09T14:48:16 [TASK_MANAGER ]I: Starting subtask #5 (replicationtask_util.c:862)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:48:16 [TASK_MANAGER ]I: Starting subtask #6 (replicationtask_util.c:862)
2017-07-09T14:48:16 [TASK_MANAGER ]E: Task error notification received from subtask 0, thread 0 [122502] ODBC general error. (replicationtask.c:1938)
2017-07-09T14:48:16 [TASK_MANAGER ]I: Task '6UJ63JGAHT7XDURNKAJPQATIXU' encountered a recoverable error (repository.c:4107)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1465911456;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1415579808;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1413478560;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1411377312;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1361053856;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1310722208;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:48:16 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1308620960;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1306519712;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:48:16 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:48:17 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:48:17 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1260390560;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:17 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1042286752;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:17 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:48:17 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:48:17 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:48:17 [TARGET_LOAD ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:48:17 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-1040185504;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Subtask #0 ended (replicationtask_util.c:925)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Subtask #1 ended (replicationtask_util.c:925)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Subtask #2 ended (replicationtask_util.c:925)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Subtask #3 ended (replicationtask_util.c:925)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Subtask #4 ended (replicationtask_util.c:925)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Subtask #5 ended (replicationtask_util.c:925)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Subtask #6 ended (replicationtask_util.c:925)
2017-07-09T14:48:20 [TASK_MANAGER ]I: Task management thread terminated (replicationtask.c:2679)
2017-07-09T14:53:45 [TASK_MANAGER ]I: Task '6UJ63JGAHT7XDURNKAJPQATIXU' running CDC only in resume mode (replicationtask.c:805)
2017-07-09T14:53:45 [TASK_MANAGER ]I: Creating threads for all components (replicationtask.c:1279)
2017-07-09T14:53:45 [TASK_MANAGER ]I: CDC Control buffer stream size for QAYMAYIYZXMVMSBSGQRBYUUXQI is set to 5MB (subtask.c:772)
2017-07-09T14:53:45 [TASK_MANAGER ]I: CDC Control buffer stream size for 4UC3KDSEXMGBDPTTFU2DYBTMNE is set to 5MB (subtask.c:772)
2017-07-09T14:53:45 [TASK_MANAGER ]I: CDC Control buffer stream size for transaction_sorter is set to 5MB (subtask.c:772)
2017-07-09T14:53:45 [TASK_MANAGER ]I: Threads for all components were created (replicationtask.c:1425)
2017-07-09T14:53:45 [TASK_MANAGER ]I: Task initialization completed successfully (replicationtask.c:2265)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-727713952;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:53:45 [TARGET_APPLY ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:53:45 [TARGET_APPLY ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:53:45 [TARGET_APPLY ]I: Creating Redshift File Transfer client (redshift_imp.c:867)
2017-07-09T14:53:45 [TARGET_APPLY ]I: Going to start Redshift File Transfer client (redshift_imp.c:925)
2017-07-09T14:53:45 [TARGET_APPLY ]I: Restore bulk state. Last bulk last record id - '0', last applied record id - '0', target confirmed record id - '0' (endpointshell.c:890)
2017-07-09T14:53:45 [TARGET_APPLY ]I: Target endpoint does not support direct insert in batch apply mode (bulk_apply.c:468)
2017-07-09T14:53:45 [TARGET_APPLY ]I: Working in bulk apply mode (endpointshell.c:897)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-725612704;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:53:45 [TASK_MANAGER ]I: All stream components were initialized (replicationtask.c:2110)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]I: Initial position is set to 'now' (postgres_endpoint_util.c:349)
2017-07-09T14:53:45 [TASK_MANAGER ]I: Starting subtask #1 (replicationtask_util.c:862)
2017-07-09T14:53:45 [SOURCE_UNLOAD ]I: Going to connect to ODBC connection string: Driver={PostgreSQL Unicode(x64)};Server=postgres-replica.1mginfra.com;Port=-672491680;Database=my_sample_db;UseDeclareFetch=1;Fetch=10000;Uid=la_la_username;Pwd=****; (postgres_endpoint_util.c:258)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]I: Replication slot '6uj63jgaht7xdurn_00016400_ca44edb7_78eb_46e7_a992_7ffa63eb3b05' does NOT exist. (postgres_endpoint_capture.c:283)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]I: Initial positioning requested is 'now' (postgres_endpoint_capture.c:285)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]E: Failed to execute statement: 'SELECT xlog_position FROM pg_create_logical_replication_slot('6uj63jgaht7xdurn_00016400_ca44edb7_78eb_46e7_a992_7ffa63eb3b05', 'test_decoding')' [122502] ODBC general error. (ar_odbc_stmt.c:2184)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]E: RetCode: SQL_ERROR SqlState: 55000 NativeError: 1 Message: ERROR: logical decoding requires wal_level >= logical;, Error while executing the query [122502] ODBC general error. (ar_odbc_stmt.c:2190)
2017-07-09T14:53:45 [SOURCE_CAPTURE ]E: Creating replication slot '6uj63jgaht7xdurn_00016400_ca44edb7_78eb_46e7_a992_7ffa63eb3b05' failed. [122502] ODBC general error. (postgres_endpoint_capture.c:306)
2017-07-09T14:53:46 [TASK_MANAGER ]I: Starting subtask #2 (replicationtask_util.c:862)
2017-07-09T14:53:46 [TASK_MANAGER ]I: Starting subtask #3 (replicationtask_util.c:862)
2017-07-09T14:53:46 [TASK_MANAGER ]I: Starting subtask #4 (replicationtask_util.c:862)
2017-07-09T14:53:46 [TARGET_LOAD ]I: Going to connect to server blahblah.redshift.amazonaws.com database test_dms (redshift_imp.c:736)
2017-07-09T14:53:46 [SOURCE_CAPTURE ]E: Error executing source loop [122502] ODBC general error. (streamcomponent.c:1473)
2017-07-09T14:53:46 [TASK_MANAGER ]E: Stream component failed at subtask 0, component st_0_QAYMAYIYZXMVMSBSGQRBYUUXQI [122502] ODBC general error. (subtask.c:1380)
2017-07-09T14:53:46 [TASK_MANAGER ]I: Starting subtask #5 (replicationtask_util.c:862)
2017-07-09T14:53:46 [TARGET_LOAD ]I: Connected to server blahblah.redshift.amazonaws.com database test_dms successfully. (redshift_imp.c:755)
2017-07-09T14:53:46 [TARGET_LOAD ]I: Creating Redshift File Transfer client (redshift_imp.c:867)

3 个解决方案

解决方案1
 0  2017-09-25 16:53:53

AWS DMS on read replica on PG is not supported . 不支持PG上只读副本上的AWS DMS。 In order to enable CDC you need to trigger wal creation and this done by doing a least one backup , but backup is not supported on Read replica so it is a kind of dead lock. 为了启用CDC，您需要触发wal创建，并通过执行至少一个备份来完成此操作，但是只读副本不支持备份，因此这是一种死锁。

I've open a case on that in AWS 我已经在AWS中对此进行了调查

解决方案2
 0  2018-04-25 03:54:16

Also it seems replication is supported on 9.5.4 and above. 而且似乎在9.5.4及更高版本中支持复制。 https://forums.aws.amazon.com/message.jspa?messageID=744635 https://forums.aws.amazon.com/message.jspa?messageID=744635

解决方案3
 0  2021-12-01 14:33:49

In order to update the wal_level and get rid of the error you will need to make a change to your RDS configuration.为了更新 wal_level 并消除错误，您需要更改 RDS 配置。 The easiest way to update it is through the console (web site)更新它的最简单方法是通过控制台（网站）

  1. Once logged in and on the RDS service page, click on the "Parameter groups"登录并在 RDS 服务页面上，单击“参数组”
  2. If you haven't changed anything, you're probably still using the default group.如果您没有更改任何内容，则您可能仍在使用默认组。 In my case I was using default.aurora-postgresql12.就我而言，我使用的是 default.aurora-postgresql12。 Default groups don't allow changes so you will need to create a new parameter group默认组不允许更改，因此您需要创建新的参数组
  3. Give the group a name, description and copy the settings from you default group为组命名、描述并从默认组复制设置
  4. Edit the group and filter on "rds.logical_replication"编辑组并过滤“rds.logical_replication”
  5. Modify that item and set its value to 1 (from 0) and then save your changes修改该项目并将其值设置为 1（从 0），然后保存更改
  6. Next update your cluster to use your new parameter group.接下来更新您的集群以使用您的新参数组。 This will ask you when you want to apply the changes.这将询问您何时要应用更改。 Applying them now "should" have no impact on the cluster, but you can always wait to apply them.现在应用它们“应该”对集群没有影响，但您可以随时等待应用它们。 Regardless when you apply the changes you will need to reboot the reader/writer instances (this took me about 60 seconds).无论何时应用更改，您都需要重新启动读取器/写入器实例（这花了我大约 60 秒）。
  7. After the reboot, try to restart the DMS task and it should work.重新启动后，尝试重新启动 DMS 任务，它应该可以工作。

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