Details
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Bug
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Status: Open (View Workflow)
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Major
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Resolution: Unresolved
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10.11, 11.4.1
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None
Description
how to reproduce:
- create data-at-rest encryption setup with hashicorp key mgmt plugin
- create a key on the hashicorp vault side
- create a table and encrypty it using the generated key
- create two new key versions on the vault server (two are needed at minimum for background key encoding to kick in)
while re-encryption is ongoing the mariadbd process takes about 10-15% CPU in my test setup
after re-encryption is complete the mariadbd process still shows CPU usage fluctuating between 10-30% even though the server should be completely idle, and in per-thread view in "top" it is clear that it is the background encryption threads that consume the CPU time
then changing hashicorp_key_management_cache_version_timeout from its default 0 to 100 milliseconds the CPU usage goes up to some 100 to 130%.
my config settings:
[mysqld]
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performance_schema=ON
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plugin_load_add = hashicorp_key_management.so
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hashicorp-key-management
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hashicorp-key-management-vault-url="..."
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hashicorp-key-management-token="...."
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innodb_encrypt_tables = FORCE
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innodb_encrypt_log = ON
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innodb_encrypt_temporary_tables = ON
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innodb_encryption_threads = 4
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innodb_encryption_rotate_key_age = 1
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innodb_default_encryption_key_id = 1
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innodb_encryption_rotation_iops=100
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aria_encrypt_tables = ON
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encrypt_tmp_disk_tables = ON
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encrypt_tmp_files = ON
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log-bin
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encrypt_binlog = ON
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Attachments
Issue Links
- is caused by
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MDEV-19281 Vault Key Management Plugin
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- Closed
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