key-value pairs to the `log-opts` JSON array. They can also be set on a given
container by adding a `--log-opt <key>=<value>` flag for each option when
starting the container.
| Option | Description | Example value |
| :----------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------- |
| `syslog-facility` | The `syslog` facility to use. Can be the number or name for any valid `syslog` facility. See the [syslog documentation](https://tools.ietf.org/html/rfc5424#section-6.2.1). | `--log-opt syslog-facility=daemon` |
| `syslog-tls-ca-cert` | The absolute path to the trust certificates signed by the CA. Ignored if the address protocol isn't `tcp+tls`. | `--log-opt syslog-tls-ca-cert=/etc/ca-certificates/custom/ca.pem` |
| `syslog-tls-cert` | The absolute path to the TLS certificate file. Ignored if the address protocol isn't `tcp+tls`. | `--log-opt syslog-tls-cert=/etc/ca-certificates/custom/cert.pem` |
| `syslog-tls-key` | The absolute path to the TLS key file. Ignored if the address protocol isn't `tcp+tls`. | `--log-opt syslog-tls-key=/etc/ca-certificates/custom/key.pem` |
| `syslog-tls-skip-verify` | If set to `true`, TLS verification is skipped when connecting to the `syslog` daemon. Defaults to `false`. Ignored if the address protocol isn't `tcp+tls`. | `--log-opt syslog-tls-skip-verify=true` |