[Kerberos] Add bootstrap checks for kerberos realm #31548
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As there are some system properties like `java.security.krb5.kdc` , `java.security.krb5.realm` which can specify values that are applicable to whole JVM. This is the reason for having only one instance of KerberosRealm. Each ES node will have a kerberos keytab with credentials. This keytab must exist for kerberos authentication to work. `KerberosRealmBootstrapCheck` performs these checks for given configuration.
bizybot
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:Security/Authentication
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Pinging @elastic/es-security |
set bootstrap failure when `type` not specified for realm
tvernum
reviewed
Jun 25, 2018
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| @Override | ||
| public BootstrapCheckResult check(final BootstrapContext context) { | ||
| final Settings realmsSettings = RealmSettings.get(context.settings); |
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I would recommend using RealmSettings.getRealmSettings instead.
It slightly reduces your reliance on the underlying realm config model.
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Thanks, Tim. Addressed this.
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Hi, @tvernum I have addressed your review comment. Please take another look when you get some time. Thank you. |
jaymode
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Jun 26, 2018
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I left a request for improved javadocs on the class level. Otherwise LGTM
| import java.util.Map.Entry; | ||
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| /** | ||
| * This class is used to perform bootstrap checks for kerberos realm. |
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can you be more detailed here about the checks and why we have these checks?
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Thanks, addressed the javadocs.
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As there are some system properties like
java.security.krb5.kdc,
java.security.krb5.realm,java.security.krb5.confwhich canspecify values that are applicable to whole JVM. This is the reason
for having only one instance of Kerberos realm.
Each ES node will have a Kerberos keytab with credentials. This
keytab must exist for Kerberos authentication to work.
KerberosRealmBootstrapCheckperforms these checks for givenconfiguration.