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Hi Team, Getting these warnings while running an ...
# best-practices
s
Hi Team, Getting these warnings while running an ELT pipeline. Can anyone suggest what needs to be done from my side. 
2025-04-02T07:37:31.279724Z [warning  ] Certificate did not match expected hostname: <http://sp.meltano.com|sp.meltano.com>. Certificate: {'subject': ((('commonName', '_.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar  7 00:00:00 2025 GMT', 'notAfter': 'Apr  5 23:59:59 2026 GMT', 'subjectAltName': (('DNS', '_.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),), 'OCSP': ('*<http://ocsp.r2m02.amazontrust.com>*',), 'caIssuers': ('*<http://crt.r2m02.amazontrust.com/r2m02.cer>*',), 'crlDistributionPoints': ('*<http://crl.r2m02.amazontrust.com/r2m02.crl',)>}*
2025-04-02T07:37:31.283308Z [warning  ] Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=0)) after connection broken by 'SSLError(CertificateError("hostname '<http://sp.meltano.com|sp.meltano.com>' doesn't match '_.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'"))': /com.snowplowanalytics.snowplow/tp2_
_2025-04-02T073732.200577Z [warning ] Certificate did not match expected hostname: sp.meltano.com. Certificate: {'subject': ((('commonName', '_`.ops.snowcatcloud.com'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar 7 000000 2025 GMT', 'notAfter': 'Apr 5 235959 2026 GMT', 'subjectAltName': (('DNS', '_.ops.snowcatcloud.com'),), 'OCSP': ('*http://ocsp.r2m02.amazontrust.com*',), 'caIssuers': ('*http://crt.r2m02.amazontrust.com/r2m02.cer*',), 'crlDistributionPoints': ('*http://crl.r2m02.amazontrust.com/r2m02.crl',)}*_` 
_2025-04-02T07:37:32.204045Z [warning  ] Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=0)) after connection broken by 'SSLError(CertificateError("hostname '<http://sp.meltano.com|sp.meltano.com>' doesn't match '_.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'"))': /com.snowplowanalytics.snowplow/tp2
2025-04-02T073733.138758Z [warning ] Certificate did not match expected hostname: sp.meltano.com. Certificate: {'subject': ((('commonName', '`_.ops.snowcatcloud.com'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar 7 000000 2025 GMT', 'notAfter': 'Apr 5 235959 2026 GMT', 'subjectAltName': (('DNS', '_.ops.snowcatcloud.com'),), 'OCSP': ('*http://ocsp.r2m02.amazontrust.com*',), 'caIssuers': ('*http://crt.r2m02.amazontrust.com/r2m02.cer*',), 'crlDistributionPoints': ('*http://crl.r2m02.amazontrust.com/r2m02.crl',)}*` 
2025-04-02T07:37:33.141577Z [warning  ] Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=0)) after connection broken by 'SSLError(CertificateError("hostname '<http://sp.meltano.com|sp.meltano.com>' doesn't match '_.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'"))': /com.snowplowanalytics.snowplow/tp2_
_2025-04-02T073734.072331Z [warning ] Certificate did not match expected hostname: sp.meltano.com. Certificate: {'subject': ((('commonName', '_`.ops.snowcatcloud.com'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar 7 000000 2025 GMT', 'notAfter': 'Apr 5 235959 2026 GMT', 'subjectAltName': (('DNS', '*.ops.snowcatcloud.com'),), 'OCSP': ('*http://ocsp.r2m02.amazontrust.com*',), 'caIssuers': ('*http://crt.r2m02.amazontrust.com/r2m02.cer*',), 'crlDistributionPoints': ('*http://crl.r2m02.amazontrust.com/r2m02.crl',)}*` 
(meltanoEnv) PS C:\Siba_\Work\POC_ConnectorFactory\Gerrit\Connector_Factory_Development\meltano-backend>
a
Can you provide more info? What was the meltano command? Share a redacted 
meltano.yml
file?
s
The command was 
meltano run tap-snowflake target-salesforce
But after configuring 
send_anonymous_usage_stats
to 
false
there warnings were gone.
I got this error again just now.
Copy code
(meltanoEnv) PS C:\Siba_\Work\POC_ConnectorFactory\Gerrit\Connector_Factory_Development\meltano-backend\connectors\tap-postgres> meltano install 
2025-04-02T13:52:28.144193Z [warning  ] Failed to create symlink to 'meltano.exe': administrator privilege required
2025-04-02T13:52:28.366811Z [info     ] Installing 2 plugins
2025-04-02T13:52:28.453164Z [info     ] Installing extractor 'tap-postgres'
2025-04-02T13:52:28.522450Z [info     ] Installing loader 'target-jsonl'
2025-04-02T13:53:39.641310Z [info     ] Installed loader 'target-jsonl'
2025-04-02T13:54:01.294356Z [info     ] Installed extractor 'tap-postgres'
2025-04-02T13:54:01.295195Z [info     ] Installed 2/2 plugins
2025-04-02T13:54:02.190835Z [warning  ] Certificate did not match expected hostname: <http://sp.meltano.com|sp.meltano.com>. Certificate: {'subject': ((('commonName', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar  7 00:00:00 2025 GMT', 'notAfter': 'Apr  5 23:59:59 2026 GMT', 'subjectAltName': (('DNS', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),), 'OCSP': ('<http://ocsp.r2m02.amazontrust.com>',), 'caIssuers': ('<http://crt.r2m02.amazontrust.com/r2m02.cer',>), 'crlDistributionPoints': ('<http://crl.r2m02.amazontrust.com/r2m02.crl',)>}
2025-04-02T13:54:02.192529Z [warning  ] Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=0)) after connection broken by 'SSLError(CertificateError("hostname '<http://sp.meltano.com|sp.meltano.com>' doesn't match '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'"))': /com.snowplowanalytics.snowplow/tp2
2025-04-02T13:54:03.042557Z [warning  ] Certificate did not match expected hostname: <http://sp.meltano.com|sp.meltano.com>. Certificate: {'subject': ((('commonName', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar  7 00:00:00 2025 GMT', 'notAfter': 'Apr  5 23:59:59 2026 GMT', 'subjectAltName': (('DNS', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),), 'OCSP': ('<http://ocsp.r2m02.amazontrust.com>',), 'caIssuers': ('<http://crt.r2m02.amazontrust.com/r2m02.cer',>), 'crlDistributionPoints': ('<http://crl.r2m02.amazontrust.com/r2m02.crl',)>}
2025-04-02T13:54:03.044411Z [warning  ] Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=0)) after connection broken by 'SSLError(CertificateError("hostname '<http://sp.meltano.com|sp.meltano.com>' doesn't match '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'"))': /com.snowplowanalytics.snowplow/tp2
2025-04-02T13:54:03.976049Z [warning  ] Certificate did not match expected hostname: <http://sp.meltano.com|sp.meltano.com>. Certificate: {'subject': ((('commonName', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar  7 00:00:00 2025 GMT', 'notAfter': 'Apr  5 23:59:59 2026 GMT', 'subjectAltName': (('DNS', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),), 'OCSP': ('<http://ocsp.r2m02.amazontrust.com>',), 'caIssuers': ('<http://crt.r2m02.amazontrust.com/r2m02.cer',>), 'crlDistributionPoints': ('<http://crl.r2m02.amazontrust.com/r2m02.crl',)>}
2025-04-02T13:54:03.978027Z [warning  ] Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=0)) after connection broken by 'SSLError(CertificateError("hostname '<http://sp.meltano.com|sp.meltano.com>' doesn't match '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'"))': /com.snowplowanalytics.snowplow/tp2
2025-04-02T13:54:04.955097Z [warning  ] Certificate did not match expected hostname: <http://sp.meltano.com|sp.meltano.com>. Certificate: {'subject': ((('commonName', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),),), 'issuer': ((('countryName', 'US'),), (('organizationName', 'Amazon'),), (('commonName', 'Amazon RSA 2048 M02'),)), 'version': 3, 'serialNumber': '0668C0E7C8CD0F1A31A21E5DDD2FD67D', 'notBefore': 'Mar  7 00:00:00 2025 GMT', 'notAfter': 'Apr  5 23:59:59 2026 GMT', 'subjectAltName': (('DNS', '*.<http://ops.snowcatcloud.com|ops.snowcatcloud.com>'),), 'OCSP': ('<http://ocsp.r2m02.amazontrust.com>',), 'caIssuers': ('<http://crt.r2m02.amazontrust.com/r2m02.cer',>), 'crlDistributionPoints': ('<http://crl.r2m02.amazontrust.com/r2m02.crl',)>}
(meltanoEnv) PS C:\Siba_\Work\POC_ConnectorFactory\Gerrit\Connector_Factory_Development\meltano-backend\connectors\tap-postgres> 
(meltanoEnv) PS C:\Siba_\Work\POC_ConnectorFactory\Gerrit\Connector_Factory_Development\meltano-backend\connectors\tap-postgres>
(meltanoEnv) PS C:\Siba_\Work\POC_ConnectorFactory\Gerrit\Connector_Factory_Development\meltano-backend\connectors\tap-postgres> 
(meltanoEnv) PS C:\Siba_\Work\POC_ConnectorFactory\Gerrit\Connector_Factory_Development\meltano-backend\connectors\tap-postgres>
p
I am getting a very similar error in three different environments simultaneously. Most meltano commands are failing. This is the error I get when running 
meltano schedule list
. It starts to list my first few schedules and then the command hangs and shows this error three times before completely erroring out. It is causing my airflow scheduler in turn. 
025-04-02T15:47:57.794412Z [warning  ] Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=0)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7dcdd4f27e50>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /com.snowplowanalytics.snowplow/tp2
r
You should just need to set 
send_anonymous_usage_stats: false
in your 
meltano.yml
to stop these requests to Snowplow. https://docs.meltano.com/reference/settings/#send_anonymous_usage_stats https://handbook.meltano.com/data-team/telemetry
p
That does seem to fix it. Thanks. I'm assuming there is some certificate issue with snowplow? It is surprising to me that errors in usage statistics reporting are capable of bringing down independently hosted meltano instances.
r
Most likely a firewall is blocking the outgoing request. I do agree that it is odd the requests/retries are blocking.
👍 1
Oh, I didn't see the certificate log. Agreed on that too then!
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