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Istio Certificate Authority (CA).
istio_ca [flags]
| Flags | Description |
|---|---|
—append-dns-names | Append DNS names to the certificates for webhook services. |
—cert-chain <string> | Path to the certificate chain file. (default )</td></tr><tr><td><code>--citadel-storage-namespace <string></code></td><td>Namespace where the Citadel pod is running. Will not be used if explicit file or other storage mechanism is specified. (default `istio-system`)</td></tr><tr><td><code>--ctrlz_address <string></code></td><td>The IP Address to listen on for the ControlZ introspection facility. Use '*' to indicate all addresses. (default `localhost`)</td></tr><tr><td><code>--ctrlz_port <uint16></code></td><td>The IP port to use for the ControlZ introspection facility (default `9876`)</td></tr><tr><td><code>--custom-dns-names <string></code></td><td>The list of account.namespace:customdns names, separated by comma. (default) |
—enable-profiling | Enabling profiling when monitoring Citadel. |
—experimental-dual-use | Enable dual-use mode. Generates certificates with a CommonName identical to the SAN. |
—grpc-host-identities <string> | The list of hostnames for istio ca server, separated by comma. (default istio-ca,istio-citadel) |
—grpc-port <int> | The port number for Citadel GRPC server. If unspecified, Citadel will not serve GRPC requests. (default 8060) |
—key-size <int> | Size of generated private key. (default 2048) |
—kube-config <string> | Specifies path to kubeconfig file. This must be specified when not running inside a Kubernetes pod. (default )</td></tr><tr><td><code>--listened-namespaces <string></code></td><td>Select the namespaces for the Citadel to listen to, separated by comma. If unspecified, Citadel tries to use the ${NAMESPACE} environment variable. If neither is set, Citadel listens to all namespaces. (default) |
—liveness-probe-interval <duration> | Interval of updating file for the liveness probe. (default 0s) |
—liveness-probe-path <string> | Path to the file for the liveness probe. (default )</td></tr><tr><td><code>--log_as_json</code></td><td>Whether to format output as JSON or in plain console-friendly format</td></tr><tr><td><code>--log_caller <string></code></td><td>Comma-separated list of scopes for which to include caller information, scopes can be any of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] (default) |
—log_output_level <string> | Comma-separated minimum per-scope logging level of messages to output, in the form of <scope>:<level>,<scope>:<level>,… where scope can be one of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] and level can be one of [debug, info, warn, error, fatal, none] (default default:info) |
—log_rotate <string> | The path for the optional rotating log file (default )</td></tr><tr><td><code>--log_rotate_max_age <int></code></td><td>The maximum age in days of a log file beyond which the file is rotated (0 indicates no limit) (default `30`)</td></tr><tr><td><code>--log_rotate_max_backups <int></code></td><td>The maximum number of log file backups to keep before older files are deleted (0 indicates no limit) (default `1000`)</td></tr><tr><td><code>--log_rotate_max_size <int></code></td><td>The maximum size in megabytes of a log file beyond which the file is rotated (default `104857600`)</td></tr><tr><td><code>--log_stacktrace_level <string></code></td><td>Comma-separated minimum per-scope logging level at which stack traces are captured, in the form of <scope>:<level>,<scope:level>,... where scope can be one of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] and level can be one of [debug, info, warn, error, fatal, none] (default `default:none`)</td></tr><tr><td><code>--log_target <stringArray></code></td><td>The set of paths where to output the log. This can be any path as well as the special values stdout and stderr (default `[stdout]`)</td></tr><tr><td><code>--max-workload-cert-ttl <duration></code></td><td>The max TTL of issued workload certificates. (default `2160h0m0s`)</td></tr><tr><td><code>--monitoring-port <int></code></td><td>The port number for monitoring Citadel. If unspecified, Citadel will disable monitoring. (default `15014`)</td></tr><tr><td><code>--org <string></code></td><td>Organization for the certificate. (default) |
—pkcs8-keys | Whether to generate PKCS#8 private keys. |
—probe-check-interval <duration> | Interval of checking the liveness of the CA. (default 30s) |
—read-signing-cert-only | When set, Citadel only reads the self-signed signing cert and key from Kubernetes secret without generating one (if not exist). This flag avoids racing condition between multiple Citadels generating self-signed key and cert. Please make sure one and only one Citadel instance has this flag set to false. |
—requested-ca-cert-ttl <duration> | The requested TTL for the CA certificate. (default 8760h0m0s) |
—root-cert <string> | Path to the root certificate file. (default )</td></tr><tr><td><code>--sds-enabled</code></td><td>Whether SDS is enabled.</td></tr><tr><td><code>--self-signed-ca</code></td><td>Indicates whether to use auto-generated self-signed CA certificate. When set to true, the '--signing-cert' and '--signing-key' options are ignored.</td></tr><tr><td><code>--server-only</code></td><td>When set, Citadel only serves as a server without writing the Kubernetes secrets.</td></tr><tr><td><code>--sign-ca-certs</code></td><td>Whether Citadel signs certificates for other CAs.</td></tr><tr><td><code>--signing-cert <string></code></td><td>Path to the CA signing certificate file. (default) |
—signing-key <string> | Path to the CA signing key file. (default )</td></tr><tr><td><code>--trust-domain <string></code></td><td>The domain serves to identify the system with SPIFFE. (default) |
—upstream-ca-address <string> | The IP:port address of the upstream CA. When set, the CA will rely on the upstream Citadel to provision its own certificate. (default `)</td></tr><tr><td><code>--workload-cert-grace-period-ratio <float32></code></td><td>The workload certificate rotation grace period, as a ratio of the workload certificate TTL. (default0.5)</td></tr><tr><td><code>--workload-cert-ttl <duration></code></td><td>The TTL of issued workload certificates. (default2160h0m0s`) |
istio_ca probe
Check the liveness or readiness of a locally-running server
istio_ca probe [flags]
| Flags | Description |
|---|---|
—ctrlz_address <string> | The IP Address to listen on for the ControlZ introspection facility. Use ‘*’ to indicate all addresses. (default localhost) |
—ctrlz_port <uint16> | The IP port to use for the ControlZ introspection facility (default 9876) |
—interval <duration> | Duration used for checking the target file’s last modified time. (default 0s) |
—log_as_json | Whether to format output as JSON or in plain console-friendly format |
—log_caller <string> | Comma-separated list of scopes for which to include caller information, scopes can be any of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] (default )</td></tr><tr><td><code>--log_output_level <string></code></td><td>Comma-separated minimum per-scope logging level of messages to output, in the form of <scope>:<level>,<scope>:<level>,... where scope can be one of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] and level can be one of [debug, info, warn, error, fatal, none] (default `default:info`)</td></tr><tr><td><code>--log_rotate <string></code></td><td>The path for the optional rotating log file (default) |
—log_rotate_max_age <int> | The maximum age in days of a log file beyond which the file is rotated (0 indicates no limit) (default 30) |
—log_rotate_max_backups <int> | The maximum number of log file backups to keep before older files are deleted (0 indicates no limit) (default 1000) |
—log_rotate_max_size <int> | The maximum size in megabytes of a log file beyond which the file is rotated (default 104857600) |
—log_stacktrace_level <string> | Comma-separated minimum per-scope logging level at which stack traces are captured, in the form of <scope>:<level>,<scope:level>,… where scope can be one of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] and level can be one of [debug, info, warn, error, fatal, none] (default default:none) |
—log_target <stringArray> | The set of paths where to output the log. This can be any path as well as the special values stdout and stderr (default [stdout]) |
—probe-path <string> | Path of the file for checking the availability. (default ``) |
istio_ca version
Prints out build version information
istio_ca version [flags]
| Flags | Shorthand | Description |
|---|---|---|
—ctrlz_address <string> | The IP Address to listen on for the ControlZ introspection facility. Use ‘*’ to indicate all addresses. (default localhost) | |
—ctrlz_port <uint16> | The IP port to use for the ControlZ introspection facility (default 9876) | |
—log_as_json | Whether to format output as JSON or in plain console-friendly format | |
—log_caller <string> | Comma-separated list of scopes for which to include caller information, scopes can be any of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] (default )</td></tr><tr><td><code>--log_output_level <string></code></td><td></td><td>Comma-separated minimum per-scope logging level of messages to output, in the form of <scope>:<level>,<scope>:<level>,... where scope can be one of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] and level can be one of [debug, info, warn, error, fatal, none] (default `default:info`)</td></tr><tr><td><code>--log_rotate <string></code></td><td></td><td>The path for the optional rotating log file (default) | |
—log_rotate_max_age <int> | The maximum age in days of a log file beyond which the file is rotated (0 indicates no limit) (default 30) | |
—log_rotate_max_backups <int> | The maximum number of log file backups to keep before older files are deleted (0 indicates no limit) (default 1000) | |
—log_rotate_max_size <int> | The maximum size in megabytes of a log file beyond which the file is rotated (default 104857600) | |
—log_stacktrace_level <string> | Comma-separated minimum per-scope logging level at which stack traces are captured, in the form of <scope>:<level>,<scope:level>,… where scope can be one of [all, caSecretController, configMapController, default, k8sController, monitor, pkiCaLog, rootCertRotator, serverCaLog] and level can be one of [debug, info, warn, error, fatal, none] (default default:none) | |
—log_target <stringArray> | The set of paths where to output the log. This can be any path as well as the special values stdout and stderr (default [stdout]) | |
—output <string> | -o | One of ‘yaml’ or ‘json’. (default ``) |
—short | -s | Use —short=false to generate full version information |
Environment variables
These environment variables affect the behavior of the istio_ca command.
| Variable Name | Type | Default Value | Description |
|---|---|---|---|
CITADEL_ENABLE_JITTER_FOR_ROOT_CERT_ROTATOR | Boolean | true | If true, set up a jitter to start root cert rotator. Jitter selects a backoff time in seconds to start root cert rotator, and the back off time is below root cert check interval. |
CITADEL_ENABLE_NAMESPACES_BY_DEFAULT | Boolean | true | Determines whether unlabeled namespaces should be targeted by this Citadel instance |
CITADEL_SELF_SIGNED_CA_CERT_TTL | Time Duration | 87600h0m0s | The TTL of self-signed CA root certificate. |
CITADEL_SELF_SIGNED_ROOT_CERT_CHECK_INTERVAL | Time Duration | 1h0m0s | The interval that self-signed CA checks its root certificate expiration time and rotates root certificate. Setting this interval to zero or a negative value disables automated root cert check and rotation. This interval is suggested to be larger than 10 minutes. |
CITADEL_SELF_SIGNED_ROOT_CERT_GRACE_PERIOD_PERCENTILE | Integer | 20 | Grace period percentile for self-signed root cert. |
CITADEL_WORKLOAD_CERT_MIN_GRACE_PERIOD | Time Duration | 10m0s | The minimum workload certificate rotation grace period. |
NAMESPACE | String | |
Exported metrics
| Metric Name | Type | Description |
|---|---|---|
citadel_secret_controller_csr_err_count | Sum | The number of errors occurred when creating the CSR. |
citadel_secret_controller_csr_sign_err_count | Sum | The number of errors occurred when signing the CSR. |
citadel_secret_controller_secret_deleted_cert_count | Sum | The number of certificates recreated due to secret deletion (service account still exists). |
citadel_secret_controller_svc_acc_created_cert_count | Sum | The number of certificates created due to service account creation. |
citadel_secret_controller_svc_acc_deleted_cert_count | Sum | The number of certificates deleted due to service account deletion. |
citadel_server_authentication_failure_count | Sum | The number of authentication failures. |
citadel_server_csr_count | Sum | The number of CSRs received by Citadel server. |
citadel_server_csr_parsing_err_count | Sum | The number of errors occurred when parsing the CSR. |
citadel_server_csr_sign_err_count | Sum | The number of errors occurred when signing the CSR. |
citadel_server_id_extraction_err_count | Sum | The number of errors occurred when extracting the ID from CSR. |
citadel_server_root_cert_expiry_timestamp | LastValue | The unix timestamp, in seconds, when Citadel root cert will expire. We set it to negative in case of internal error. |
citadel_server_success_cert_issuance_count | Sum | The number of certificates issuances that have succeeded. |
istio_build | LastValue | Istio component build info |
