executor: add diagnosis rule to detect cluster critical errors #14743
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Signed-off-by: Lonng <heng@lonng.org>
Signed-off-by: Lonng <heng@lonng.org>
crazycs520
reviewed
Feb 12, 2020
Signed-off-by: Lonng <heng@lonng.org>
Deardrops
approved these changes
Feb 13, 2020
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What problem does this PR solve?
This PR adds a new diagnosis rule, which is used to detect whether critical errors occurred in the cluster. We will detect the following metrics tables in the current implementation:
tidb_failed_query_opmtikv_critical_errortidb_panic_counttidb_binlog_error_countpd_cmd_fail_opstidb_kv_region_error_opstidb_lock_resolver_opstikv_scheduler_is_busytikv_coprocessor_is_busytikv_channel_full_totaltikv_coprocessor_request_errortidb_schema_lease_error_opmtidb_transaction_retry_error_opstikv_grpc_errorsWhat is changed and how it works?
Check the metrics table and check whether some errors occurred in the past.
Check List
Tests
Release note
critical-errorwhich is used to detect cluster critical errors