Connection Variables

The following variables are available under the conn namespace:

Name	Type	Description
`conn.bytes_in`	`int64`	The number of bytes entering the endpoint from the client.
`conn.bytes_out`	`int64`	The number of bytes leaving an endpoint to the client.
`conn.client_ip`	`string`	Source IP of the connection to the ngrok endpoint.
`conn.client_port`	`int32`	Source port of the connection to the ngrok endpoint.
`conn.server_ip`	`string`	The IP that this connection was established on.
`conn.server_port`	`int32`	The port that this connection was established on.
`conn.server_region`	`string`	The ngrok PoP (Point of Presence) that this connection was established on and serviced through.
`conn.ts.start`	`timestamp`	Timestamp when the connection to ngrok was started.

`conn.bytes_in`

The number of bytes entering the endpoint from the client.

expressions:
  - "conn.bytes_in > 1000"

`conn.bytes_out`

The number of bytes leaving an endpoint to the client.

expressions:
  - "conn.bytes_out > 1000"

`conn.client_ip`

Source IP of the connection to the ngrok endpoint.

expressions:
  - "conn.client_ip in ['::1', '127.0.0.1']"

`conn.client_port`

Source port of the connection to the ngrok endpoint.

expressions:
  - "conn.client_port == 80"

`conn.server_ip`

The IP that this connection was established on.

expressions:
  - "conn.server_ip == '192.168.1.1'"

`conn.server_port`

The port that this connection was established on.

expressions:
  - "conn.server_port == 80"

`conn.server_region`

The ngrok PoP (Point of Presence) that this connection was established on and serviced through.

expressions:
  - "conn.server_region == 'eu'"

`conn.ts.start`

Timestamp when the connection to ngrok was started.

expressions:
  - "conn.ts.start > timestamp('2023-12-31T00:00:00Z')"

Connection Geo Variables

The following variables are available under the conn.geo namespace:

Name	Type	Description
`conn.geo.city`	`string`	The name of the city, in EN, where the `conn.client_ip` is likely to originate.
`conn.geo.country`	`string`	The name of the country, in EN, where the `conn.client_ip` is likely to originate.
`conn.geo.country_code`	`string`	The two-letter ISO country code where the `conn.client_ip` is likely to originate.
`conn.geo.latitude`	`string`	The approximate latitude where the `conn.client_ip` is likely to originate.
`conn.geo.longitude`	`string`	The approximate longitude where the `conn.client_ip` is likely to originate.
`conn.geo.radius`	`string`	The radius in kilometers around the latitude and longitude where the `conn.client_ip` is likely to originate.
`conn.geo.subdivision`	`string`	The name of the subdivision, in EN, where the `conn.client_ip` is likely to originate.

`conn.geo.city`

The name of the city, in EN, where the conn.client_ip is likely to originate.

expressions:
  - "conn.geo.city == 'Strongsville'"

`conn.geo.country`

The name of the country, in EN, where the conn.client_ip is likely to originate.

expressions:
  - "conn.geo.country == 'United States'"

`conn.geo.country_code`

The two-letter ISO country code where the conn.client_ip is likely to originate.

expressions:
  - "conn.geo.country_code != 'US'"

`conn.geo.latitude`

The approximate latitude where the conn.client_ip is likely to originate.

expressions:
  - "double(conn.geo.latitude) >= 45.0"

`conn.geo.longitude`

The approximate longitude where the conn.client_ip is likely to originate.

expressions:
  - "double(conn.geo.longitude) <= -93.0"

`conn.geo.radius`

The radius in kilometers around the latitude and longitude where the conn.client_ip is likely to originate.

expressions:
  - "conn.geo.radius <= '5'"

`conn.geo.subdivision`

The name of the subdivision, in EN, where the conn.client_ip is likely to originate.

expressions:
  - "conn.geo.subdivision == 'California'"

Connection TLS Variables

The following variables are available under the conn.tls namespace:

Name	Type	Description
`conn.tls.cipher_suite`	`string`	The cipher suite selected during the TLS handshake.
`conn.tls.ja4_fingerprint`	`string`	The JA4 fingerprint of the TLS handshake.
`conn.tls.negotiated_alpn`	`string`	TLS Application-Layer Protocol Negotiation (ALPN) Protocol ID of the protocol agreed upon in the TLS handshake
`conn.tls.session_resumed`	`bool`	True if the TLS session was resumed. Currently always false
`conn.tls.sni`	`string`	The hostname included in the `ClientHello` message via the SNI extension.
`conn.tls.version`	`string`	The version of the TLS protocol used between the client and the ngrok edge.

`conn.tls.cipher_suite`

The cipher suite selected during the TLS handshake.

expressions:
  - "conn.tls.cipher_suite == 'TLS_AES_128_GCM_SHA256'"

`conn.tls.ja4_fingerprint`

The JA4 fingerprint of the TLS handshake.

expressions:
  - "conn.tls.ja4_fingerprint == 't13d1717h2_5b57614c22b0_f0fc7018f8e8'"

`conn.tls.negotiated_alpn`

The TLS Application-Layer Protocol Negotiation (ALPN) Protocol ID of the protocol agreed upon in the TLS handshake. Defaults to "" if no ALPN was successfully negotiated.

expressions:
  - "conn.tls.negotiated_alpn == 'h2'"

`conn.tls.session_resumed`

True if the TLS session was resumed. Currently always false as we do not yet support TLS session resumption.

expressions:
  - "conn.tls.session_resumed == false"

`conn.tls.sni`

The hostname included in the ClientHello message via the SNI extension.

expressions:
  - "conn.tls.sni == 'client.example.com'"

`conn.tls.version`

The version of the TLS protocol used between the client and the ngrok edge.

expressions:
  - "conn.tls.version == '1.3'"

Connection TLS Client Variables

The following variables are available under the conn.tls.client namespace:

Name	Type	Description
`conn.tls.client.extensions`	`[]Extension`	Additional information added to the certificate.
`conn.tls.client.extensions[i].id`	`string`	The identifier (OID) that specifies the type of extension.
`conn.tls.client.extensions[i].critical`	`bool`	True if the extension is critical.
`conn.tls.client.extensions[i].value`	`[]byte`	The data for the extension.
`conn.tls.client.issuer`	`string`	The issuing authority of the certificate as a string roughly following the RFC 2253 Distinguished Names syntax.
`conn.tls.client.issuer.common_name`	`string`	Common name of the issuing authority, usually the domain name.
`conn.tls.client.issuer.country`	`[]string`	Country names where the issuing authority is located.
`conn.tls.client.issuer.locality`	`[]string`	Locality or city of the issuing authority.
`conn.tls.client.issuer.organization`	`[]string`	Name of the organization that issued the certificate.
`conn.tls.client.issuer.organizational_unit`	`[]string`	Division of the organization responsible for the certificate.
`conn.tls.client.issuer.postal_code`	`[]string`	Postal code of the issuing authority.
`conn.tls.client.issuer.province`	`[]string`	Province or state of the issuing authority.
`conn.tls.client.issuer.street_address`	`[]string`	Street address of the issuing authority.
`conn.tls.client.pem`	`string`	Full PEM-encoded client certificate of the TLS connection.
`conn.tls.client.san`	`string`	Subject alternative names of the client certificate.
`conn.tls.client.san.dns_names`	`[]string`	DNS names in the subject alternative names.
`conn.tls.client.san.email_addresses`	`[]string`	Email addresses in the subject alternative names.
`conn.tls.client.san.ip_addresses`	`[]string`	IP addresses in the subject alternative names.
`conn.tls.client.san.uris`	`[]string`	URIs in the subject alternative names.
`conn.tls.client.serial_number`	`string`	Unique identifier for the certificate.
`conn.tls.client.signature_algorithm`	`string`	Algorithm used to sign the certificate.
`conn.tls.client.subject`	`string`	The entity to whom the certificate is issued as a string roughly following the RFC 2253 Distinguished Names syntax.
`conn.tls.client.subject.common_name`	`string`	Common name of the subject, usually the domain name.
`conn.tls.client.subject.country`	`[]string`	Country names where the subject of the certificate is located.
`conn.tls.client.subject.locality`	`[]string`	Locality or city where the subject is located.
`conn.tls.client.subject.organization`	`[]string`	Name of the organization to which the subject belongs.
`conn.tls.client.subject.organizational_unit`	`[]string`	Division of the organization to which the subject belongs.
`conn.tls.client.subject.postal_code`	`[]string`	Postal code where the subject is located.
`conn.tls.client.subject.province`	`[]string`	Province or state where the subject is located.
`conn.tls.client.subject.street_address`	`[]string`	Street address where the subject is located.
`conn.tls.client.validity.not_after`	`timestamp`	Expiration date and time when the certificate is no longer valid.
`conn.tls.client.validity.not_before`	`timestamp`	Start date and time when the certificate becomes valid.

`conn.tls.client.extensions`

Additional information added to the certificate.

expressions:
  - "size(conn.tls.client.extensions) > 0"

`conn.tls.client.extensions[i].id`

The identifier (OID) that specifies the type of extension.

expressions:
  - "conn.tls.client.extensions[0].id == '2.5.29.15'"

`conn.tls.client.extensions[i].critical`

True if the extension is critical.

expressions:
  - "conn.tls.client.extensions[0].critical"

`conn.tls.client.extensions[i].value`

The data for the extension.

expressions:
  - "conn.tls.client.extensions[0].value == b' '"

`conn.tls.client.issuer`

The issuing authority of the certificate as a string roughly following the RFC 2253 Distinguished Names syntax.

expressions:
  - "conn.tls.client.issuer == 'CN=E1,O=Let's Encrypt,C=US'"

`conn.tls.client.issuer.common_name`

Common name of the issuing authority, usually the domain name.

expressions:
  - "conn.tls.client.issuer.common_name == 'exampleca.com'"

`conn.tls.client.issuer.country`

Country names where the issuing authority is located.

expressions:
  - "conn.tls.client.issuer.country == ['US']"

`conn.tls.client.issuer.locality`

Locality or city of the issuing authority.

expressions:
  - "conn.tls.client.issuer.locality == ['Mountain View']"

`conn.tls.client.issuer.organization`

Name of the organization that issued the certificate.

expressions:
  - "conn.tls.client.issuer.organization == ['Example CA']"

`conn.tls.client.issuer.organizational_unit`

Division of the organization responsible for the certificate.

expressions:
  - "conn.tls.client.issuer.organizational_unit == ['Certification Authority Division']"

`conn.tls.client.issuer.postal_code`

Postal code of the issuing authority.

expressions:
  - "conn.tls.client.issuer.postal_code == ['94043']"

`conn.tls.client.issuer.province`

Province or state of the issuing authority.

expressions:
  - "conn.tls.client.issuer.province == ['California']"

`conn.tls.client.issuer.street_address`

Street address of the issuing authority.

expressions:
  - "conn.tls.client.issuer.street_address == ['1234 Encryption Way']"

`conn.tls.client.pem`

Full PEM-encoded client certificate of the TLS connection, with \n used for newlines.

expressions:
  - "conn.tls.client.pem.starts_with('-----BEGIN CERTIFICATE-----')"
  - "conn.tls.client.pem.ends_with('-----END CERTIFICATE-----')"

`conn.tls.client.san`

Subject alternative names of the client certificate.

expressions:
  - "conn.tls.client.san == 'DNS:www.example.com, DNS:example.com, IP Address:192.168.1.1'"

`conn.tls.client.san.dns_names`

DNS names in the subject alternative names.

expressions:
  - "conn.tls.client.san.dns_names == ['www.example.com', 'example.com']"

`conn.tls.client.san.email_addresses`

Email addresses in the subject alternative names.

expressions:
  - "conn.tls.client.san.email_addresses == ['ngrok-email1@example.com', 'ngrok-email2@example.com']"

`conn.tls.client.san.ip_addresses`

IP addresses in the subject alternative names.

expressions:
  - "conn.tls.client.san.ip_addresses == ['192.168.1.1']"

`conn.tls.client.san.uris`

URIs in the subject alternative names.

expressions:
  - "conn.tls.client.san.uris == ['https://example.com/example']"

`conn.tls.client.serial_number`

Unique identifier for the certificate.

expressions:
  - "conn.tls.client.serial_number == 'b53017e79d4a5208b314a55d3574e0a8'"

`conn.tls.client.signature_algorithm`

Algorithm used to sign the certificate.

expressions:
  - "conn.tls.client.signature_algorithm == 'SHA256-RSA'"

`conn.tls.client.subject`

The entity to whom the certificate is issued as a string roughly following the RFC 2253 Distinguished Names syntax.

expressions:
  - "conn.tls.client.subject == 'CN=www.example.com'"

`conn.tls.client.subject.common_name`

Common name of the subject, usually the domain name.

expressions:
  - "conn.tls.client.subject.common_name == 'www.example.com'"

`conn.tls.client.subject.country`

Country names where the subject of the certificate is located.

expressions:
  - "conn.tls.client.subject.country == ['US']"

`conn.tls.client.subject.locality`

Locality or city where the subject is located.

expressions:
  - "conn.tls.client.subject.locality == ['Mountain View']"

`conn.tls.client.subject.organization`

Name of the organization to which the subject belongs.

expressions:
  - "conn.tls.client.subject.organization == ['Example Corp']"

`conn.tls.client.subject.organizational_unit`

Division of the organization to which the subject belongs.

expressions:
  - "conn.tls.client.subject.organizational_unit == ['Web Services']"

`conn.tls.client.subject.postal_code`

Postal code where the subject is located.

expressions:
  - "conn.tls.client.subject.postal_code == ['94043']"

`conn.tls.client.subject.province`

Province or state where the subject is located.

expressions:
  - "conn.tls.client.subject.province == ['California']"

`conn.tls.client.subject.street_address`

Street address where the subject is located.

expressions:
  - "conn.tls.client.subject.street_address == ['1234 Secure Blvd']"

`conn.tls.client.validity.not_after`

Expiration date and time when the certificate is no longer valid.

expressions:
  - "conn.tls.client.validity.not_after == timestamp('2023-01-01T00:00:00Z')"

`conn.tls.client.validity.not_before`

Start date and time when the certificate becomes valid.

expressions:
  - "conn.tls.client.validity.not_before == timestamp('2020-01-01T00:00:00Z')"

Connection TLS Server Variables

The following variables are available under the conn.tls.server namespace:

Name	Type	Description
`conn.tls.server.extensions`	`[]Extension`	Additional information added to the certificate.
`conn.tls.server.extensions[i].id`	`string`	The identifier that specifies the type of extension.
`conn.tls.server.extensions[i].critical`	`bool`	True if the extension is critical.
`conn.tls.server.extensions[i].value`	`[]byte`	The data for the extension.
`conn.tls.server.issuer`	`string`	The issuing authority of the certificate as a string roughly following the RFC 2253 Distinguished Names syntax.
`conn.tls.server.issuer.common_name`	`string`	Common name of the issuing authority, usually the domain name.
`conn.tls.server.issuer.country`	`[]string`	Country names where the issuing authority is located.
`conn.tls.server.issuer.locality`	`[]string`	Locality or city of the issuing authority.
`conn.tls.server.issuer.organization`	`[]string`	Name of the organization that issued the certificate.
`conn.tls.server.issuer.organizational_unit`	`[]string`	Division of the organization responsible for the certificate.
`conn.tls.server.issuer.postal_code`	`[]string`	Postal code of the issuing authority.
`conn.tls.server.issuer.province`	`[]string`	Province or state of the issuing authority.
`conn.tls.server.issuer.street_address`	`[]string`	Street address of the issuing authority.
`conn.tls.server.san`	`string`	Subject alternative names of the ngrok server’s leaf TLS certificate.
`conn.tls.server.san.dns_names`	`[]string`	DNS names in the subject alternative names of the ngrok server’s leaf TLS certificate.
`conn.tls.server.san.email_addresses`	`[]string`	Email addresses in the subject alternative names of the ngrok server’s leaf TLS certificate.
`conn.tls.server.san.ip_addresses`	`[]string`	IP addresses in the subject alternative names of the ngrok server’s leaf TLS certificate.
`conn.tls.server.san.uris`	`[]string`	URIs in the subject alternative names of the ngrok server’s leaf TLS certificate.
`conn.tls.server.serial_number`	`string`	Unique identifier for the certificate.
`conn.tls.server.signature_algorithm`	`string`	Algorithm used to sign the certificate.
`conn.tls.server.subject`	`string`	The entity to whom the certificate is issued as a string roughly following the RFC 2253 Distinguished Names syntax.
`conn.tls.server.subject.common_name`	`string`	Common name of the subject, usually the domain name.
`conn.tls.server.subject.country`	`[]string`	Country names where the subject of the certificate is located.
`conn.tls.server.subject.locality`	`[]string`	Locality or city where the subject is located.
`conn.tls.server.subject.organization`	`[]string`	Name of the organization to which the subject belongs.
`conn.tls.server.subject.organizational_unit`	`[]string`	Division of the organization to which the subject belongs.
`conn.tls.server.subject.postal_code`	`[]string`	Postal code where the subject is located.
`conn.tls.server.subject.province`	`[]string`	Province or state where the subject is located.
`conn.tls.server.subject.street_address`	`[]string`	Street address where the subject is located.
`conn.tls.server.validity.not_after`	`timestamp`	Expiration date and time when the certificate is no longer valid.
`conn.tls.server.validity.not_before`	`timestamp`	Start date and time when the certificate becomes valid.

`conn.tls.server.extensions`

Additional information added to the certificate.

expressions:
  - "size(conn.tls.server.extensions) > 0"

`conn.tls.server.extensions[i].id`

The identifier that specifies the type of extension.

expressions:
  - "conn.tls.server.extensions[0].id == '2.5.29.15'"

`conn.tls.server.extensions[i].critical`

True if the extension is critical.

expressions:
  - "conn.tls.server.extensions[0].critical"

`conn.tls.server.extensions[i].value`

The data for the extension.

expressions:
  - "conn.tls.server.extensions[0].value == b' '"

`conn.tls.server.issuer`

The issuing authority of the certificate as a string roughly following the RFC 2253 Distinguished Names syntax.

expressions:
  - "conn.tls.server.issuer == 'CN=E1,O=Let's Encrypt,C=US'"

`conn.tls.server.issuer.common_name`

Common name of the issuing authority, usually the domain name.

expressions:
  - "conn.tls.server.issuer.common_name == 'exampleca.com'"

`conn.tls.server.issuer.country`

Country names where the issuing authority is located.

expressions:
  - "conn.tls.server.issuer.country == ['US']"

`conn.tls.server.issuer.locality`

Locality or city of the issuing authority.

expressions:
  - "conn.tls.server.issuer.locality == ['Mountain View']"

`conn.tls.server.issuer.organization`

Name of the organization that issued the certificate.

expressions:
  - "conn.tls.server.issuer.organization == ['Example CA']"

`conn.tls.server.issuer.organizational_unit`

Division of the organization responsible for the certificate.

expressions:
  - "conn.tls.server.issuer.organizational_unit == ['Certification Authority Division']"

`conn.tls.server.issuer.postal_code`

Postal code of the issuing authority.

expressions:
  - "conn.tls.server.issuer.postal_code == ['94043']"

`conn.tls.server.issuer.province`

Province or state of the issuing authority.

expressions:
  - "conn.tls.server.issuer.province == ['California']"

`conn.tls.server.issuer.street_address`

Street address of the issuing authority.

expressions:
  - "conn.tls.server.issuer.street_address == ['1234 Encryption Way']"

`conn.tls.server.san`

Subject alternative names of the server certificate of the ngrok server’s leaf TLS certificate.

expressions:
  - "conn.tls.server.san == 'DNS:www.example.com, DNS:example.com, IP Address:192.168.1.1'"

`conn.tls.server.san.dns_names`

DNS names in the subject alternative names of the ngrok server’s leaf TLS certificate.

expressions:
  - "conn.tls.server.san.dns_names == ['ngrok-dns.com', 'ngrok-dns2.com']"

`conn.tls.server.san.email_addresses`

Email addresses in the subject alternative names of the ngrok server’s leaf TLS certificate.

expressions:
  - "conn.tls.server.san.email_addresses == ['ngrok-email1@example.com', 'ngrok-email2@example.com']"

`conn.tls.server.san.ip_addresses`

IP addresses in the subject alternative names of the ngrok server’s leaf TLS certificate.

expressions:
  - "conn.tls.server.san.ip_addresses == ['192.168.1.1']"

`conn.tls.server.san.uris`

URIs in the subject alternative names of the ngrok server’s leaf TLS certificate.

expressions:
  - "conn.tls.server.san.uris == ['https://example.com/example']"

`conn.tls.server.serial_number`

Unique identifier for the certificate.

expressions:
  - "conn.tls.server.serial_number == 'b53017e79d4a5208b314a55d3574e0a8'"

`conn.tls.server.signature_algorithm`

Algorithm used to sign the certificate.

expressions:
  - "conn.tls.server.signature_algorithm == 'SHA256-RSA'"

`conn.tls.server.subject`

The entity to whom the certificate is issued as a string roughly following the RFC 2253 Distinguished Names syntax.

expressions:
  - "conn.tls.server.subject == 'CN=www.example.com'"

`conn.tls.server.subject.common_name`

Common name of the subject, usually the domain name.

expressions:
  - "conn.tls.server.subject.common_name == 'ngrok-server.example.com'"

`conn.tls.server.subject.country`

Country names where the subject of the certificate is located.

expressions:
  - "conn.tls.server.subject.country == ['US']"

`conn.tls.server.subject.locality`

Locality or city where the subject is located.

expressions:
  - "conn.tls.server.subject.locality == ['Mountain View']"

`conn.tls.server.subject.organization`

Name of the organization to which the subject belongs.

expressions:
  - "conn.tls.server.subject.organization == ['Example Corp']"

`conn.tls.server.subject.organizational_unit`

Division of the organization to which the subject belongs.

expressions:
  - "conn.tls.server.subject.organizational_unit == ['Web Services']"

`conn.tls.server.subject.postal_code`

Postal code where the subject is located.

expressions:
  - "conn.tls.server.subject.postal_code == ['94043']"

`conn.tls.server.subject.province`

Province or state where the subject is located.

expressions:
  - "conn.tls.server.subject.province == ['California']"

`conn.tls.server.subject.street_address`

Street address where the subject is located.

expressions:
  - "conn.tls.server.subject.street_address == ['1234 Secure Blvd']"

`conn.tls.server.validity.not_after`

Expiration date and time when the certificate is no longer valid.

expressions:
  - "conn.tls.server.validity.not_after > timestamp('2023-01-01T00:00:00Z')"

`conn.tls.server.validity.not_before`

Start date and time when the certificate becomes valid.

expressions:
  - "conn.tls.server.validity.not_before < timestamp('2020-01-01T00:00:00Z')"

Connection Kubernetes Pod Variables

The following variables are available under the conn.k8s.pod namespace. They are populated on connections to endpoints with a kubernetes binding. They are not available on public or internal endpoints. If pod identity cannot be resolved, the metadata variables will not be set and conn.k8s.pod.metadata.error_code will be populated instead. See conn.k8s.pod.metadata.error_code for details.

Name	Type	Description
`conn.k8s.pod.id`	`string`	The unique identifier (UID) of the originating pod.
`conn.k8s.pod.metadata.name`	`string`	The name of the originating pod.
`conn.k8s.pod.metadata.namespace`	`string`	The namespace the originating pod belongs to.
`conn.k8s.pod.metadata.annotations`	`map(string, string)`	A map of pod annotations prefixed with `k8s.ngrok.com/`.
`conn.k8s.pod.metadata.error_code`	`string`	An error code set when pod identity could not be resolved.
`conn.k8s.pod.metadata.error_message`	`string`	A human-readable error message providing additional detail when `conn.k8s.pod.metadata.error_code` is set.

`conn.k8s.pod.id`

The unique identifier (UID) of the originating pod. Maximum size: 36 bytes.

expressions:
  - "conn.k8s.pod.id == '4b2c1a0e-7f3d-11ee-b962-0242ac120002'"

`conn.k8s.pod.metadata.name`

The name of the originating pod. Maximum size: 255 bytes.

expressions:
  - "conn.k8s.pod.metadata.name in ['worker-a', 'worker-b']"

`conn.k8s.pod.metadata.namespace`

The namespace the originating pod belongs to. Maximum size: 63 bytes.

expressions:
  - "conn.k8s.pod.metadata.namespace != 'payments'"

`conn.k8s.pod.metadata.annotations`

A map of pod annotations prefixed with k8s.ngrok.com/. Only annotations with the k8s.ngrok.com/ prefix are included. The combined size of all included annotations must not exceed 1024 bytes. If the limit is exceeded, conn.k8s.pod.metadata.error_code will be set to ERR_NGROK_28000 and a truncated annotation map being returned.

expressions:
  - "conn.k8s.pod.metadata.annotations['k8s.ngrok.com/environment'] == 'production'"

`conn.k8s.pod.metadata.error_code`

An error code set when pod identity could not be resolved. When this variable is set, the conn.k8s.pod metadata variables will not be populated.

Error code	Description
`ERR_NGROK_28000`	The combined size of one or more pod identity variables exceeded the allowed limit.
`ERR_NGROK_28001`	Pod identity metadata could not be found for this connection.

It is recommended to check this variable at the start of any policy that relies on pod identity. See Restricting Access by Kubernetes Pod Identity for guidance on handling missing identity.

expressions:
  - "conn.k8s.pod.metadata.error_code == ''"

`conn.k8s.pod.metadata.error_message`

A human-readable error message providing additional detail when conn.k8s.pod.metadata.error_code is set. Intended for troubleshooting and diagnostic purposes.

expressions:
  - "conn.k8s.pod.metadata.error_message != ''"

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