Started 590 of 885 services (601 services are lazy, passive or on-demand)

I am having this error while installing it on linux. Any suggestions ?

Not an error, please look at previous lines of the log or set the log level to DEBUG.
You can also post the full log on pastebin and put the link to it here so we can take a look at it.
Also show how you start up Keycloak.

Hi,
I am trying to install Keycloak and on the step to boot the keycloak server . i am running ./standalone.

=========================================================================

  JBoss Bootstrap Environment

  JBOSS_HOME: /home/qureshis/keycloak/keycloak-9.0.3

  JAVA: java

  JAVA_OPTS:  -server -Xms64m -Xmx512m -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m -Djava.net.preferIPv4Stack=true -Djboss.modules.system.pkgs=org.jboss.byteman -Djava.awt.headless=true 

=========================================================================

09:46:45,345 INFO  [org.jboss.modules] (main) JBoss Modules version 1.9.1.Final
09:46:45,731 INFO  [org.jboss.msc] (main) JBoss MSC version 1.4.11.Final
09:46:45,742 INFO  [org.jboss.threads] (main) JBoss Threads version 2.3.3.Final
09:46:45,882 INFO  [org.jboss.as] (MSC service thread 1-2) WFLYSRV0049: Keycloak 9.0.3 (WildFly Core 10.0.3.Final) starting
09:46:46,784 INFO  [org.wildfly.security] (ServerService Thread Pool -- 18) ELY00001: WildFly Elytron version 1.10.4.Final
09:46:47,379 INFO  [org.jboss.as.controller.management-deprecated] (Controller Boot Thread) WFLYCTL0028: Attribute 'security-realm' in the resource at address '/core-service=management/management-interface=http-interface' is deprecated, and may be removed in a future version. See the attribute description in the output of the read-resource-description operation to learn more about the deprecation.
09:46:47,414 INFO  [org.jboss.as.controller.management-deprecated] (ServerService Thread Pool -- 21) WFLYCTL0028: Attribute 'security-realm' in the resource at address '/subsystem=undertow/server=default-server/https-listener=https' is deprecated, and may be removed in a future version. See the attribute description in the output of the read-resource-description operation to learn more about the deprecation.
09:46:47,527 INFO  [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0039: Creating http management service using socket-binding (management-http)
09:46:47,557 INFO  [org.xnio] (MSC service thread 1-8) XNIO version 3.7.3.Final
09:46:47,573 INFO  [org.xnio.nio] (MSC service thread 1-8) XNIO NIO Implementation Version 3.7.3.Final
09:46:47,610 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 37) WFLYCLINF0001: Activating Infinispan subsystem.
09:46:47,613 INFO  [org.jboss.as.naming] (ServerService Thread Pool -- 43) WFLYNAM0001: Activating Naming Subsystem
09:46:47,615 INFO  [org.wildfly.extension.io] (ServerService Thread Pool -- 36) WFLYIO001: Worker 'default' has auto-configured to 8 core threads with 64 task threads based on your 4 available processors
09:46:47,616 INFO  [org.jboss.as.jaxrs] (ServerService Thread Pool -- 38) WFLYRS0016: RESTEasy version 3.9.1.Final
09:46:47,622 WARN  [org.jboss.as.txn] (ServerService Thread Pool -- 49) WFLYTX0013: The node-identifier attribute on the /subsystem=transactions is set to the default value. This is a danger for environments running multiple servers. Please make sure the attribute value is unique.
09:46:47,631 INFO  [org.wildfly.extension.microprofile.config.smallrye._private] (ServerService Thread Pool -- 51) WFLYCONF0001: Activating WildFly MicroProfile Config Subsystem
09:46:47,643 INFO  [org.jboss.as.security] (ServerService Thread Pool -- 48) WFLYSEC0002: Activating Security Subsystem
09:46:47,651 INFO  [org.jboss.as.security] (MSC service thread 1-5) WFLYSEC0001: Current PicketBox version=5.0.3.Final
09:46:47,653 INFO  [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 32) WFLYJCA0004: Deploying JDBC-compliant driver class org.h2.Driver (version 1.4)
09:46:47,658 INFO  [org.jboss.as.connector] (MSC service thread 1-6) WFLYJCA0009: Starting JCA Subsystem (WildFly/IronJacamar 1.4.17.Final)
09:46:47,681 INFO  [org.wildfly.extension.microprofile.metrics.smallrye] (ServerService Thread Pool -- 53) WFLYMETRICS0001: Activating Eclipse MicroProfile Metrics Subsystem
09:46:47,723 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-6) WFLYJCA0018: Started Driver service with driver-name = h2
09:46:47,754 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-1) WFLYUT0003: Undertow 2.0.27.Final starting
09:46:47,756 INFO  [org.wildfly.extension.microprofile.health.smallrye] (ServerService Thread Pool -- 52) WFLYHEALTH0001: Activating Eclipse MicroProfile Health Subsystem
09:46:47,770 INFO  [org.jboss.as.naming] (MSC service thread 1-7) WFLYNAM0003: Starting Naming Service
09:46:47,771 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-7) WFLYMAIL0001: Bound mail session [java:jboss/mail/Default]
09:46:47,995 INFO  [org.jboss.remoting] (MSC service thread 1-3) JBoss Remoting version 5.0.15.Final
09:46:48,138 WARN  [org.wildfly.clustering.web.undertow] (ServerService Thread Pool -- 54) WFLYCLWEBUT0007: No routing provider found for default-server; using legacy provider based on static configuration
09:46:48,210 INFO  [org.jboss.as.ejb3] (MSC service thread 1-7) WFLYEJB0481: Strict pool slsb-strict-max-pool is using a max instance size of 64 (per class), which is derived from thread worker pool sizing.
09:46:48,211 INFO  [org.jboss.as.ejb3] (MSC service thread 1-1) WFLYEJB0482: Strict pool mdb-strict-max-pool is using a max instance size of 16 (per class), which is derived from the number of CPUs on this host.
09:46:48,240 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 54) WFLYUT0014: Creating file handler for path '/home/qureshis/keycloak/keycloak-9.0.3/welcome-content' with options [directory-listing: 'false', follow-symlink: 'false', case-sensitive: 'true', safe-symlink-paths: '[]']
09:46:48,256 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-7) WFLYUT0012: Started server default-server.
09:46:48,259 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-6) WFLYUT0018: Host default-host starting
09:46:48,400 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-8) WFLYUT0006: Undertow HTTP listener default listening on 127.0.0.1:8080
09:46:48,445 INFO  [org.jboss.as.patching] (MSC service thread 1-8) WFLYPAT0050: Keycloak cumulative patch ID is: base, one-off patches include: none
09:46:48,487 WARN  [org.jboss.as.domain.management.security] (MSC service thread 1-8) WFLYDM0111: Keystore /home/qureshis/keycloak/keycloak-9.0.3/standalone/configuration/application.keystore not found, it will be auto generated on first use with a self signed certificate for host localhost
09:46:48,508 INFO  [org.jboss.as.server.deployment.scanner] (MSC service thread 1-6) WFLYDS0013: Started FileSystemDeploymentService for directory /home/qureshis/keycloak/keycloak-9.0.3/standalone/deployments
09:46:48,523 INFO  [org.jboss.as.ejb3] (MSC service thread 1-7) WFLYEJB0493: EJB subsystem suspension complete
09:46:48,526 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) WFLYSRV0027: Starting deployment of "keycloak-server.war" (runtime-name: "keycloak-server.war")
09:46:48,606 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-1) WFLYUT0006: Undertow HTTPS listener https listening on 127.0.0.1:8443
09:46:48,662 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-8) WFLYJCA0001: Bound data source [java:jboss/datasources/KeycloakDS]
09:46:48,665 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-5) WFLYJCA0001: Bound data source [java:jboss/datasources/ExampleDS]
09:46:49,103 INFO  [org.infinispan.factories.GlobalComponentRegistry] (MSC service thread 1-3) ISPN000128: Infinispan version: Infinispan 'Infinity Minus ONE +2' 9.4.16.Final
09:46:49,477 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 65) WFLYCLINF0002: Started offlineClientSessions cache from keycloak container
09:46:49,484 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 58) WFLYCLINF0002: Started realms cache from keycloak container
09:46:49,484 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 62) WFLYCLINF0002: Started loginFailures cache from keycloak container
09:46:49,485 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 61) WFLYCLINF0002: Started work cache from keycloak container
09:46:49,493 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 59) WFLYCLINF0002: Started offlineSessions cache from keycloak container
09:46:49,494 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 56) WFLYCLINF0002: Started authenticationSessions cache from keycloak container
09:46:49,494 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 64) WFLYCLINF0002: Started sessions cache from keycloak container
09:46:49,494 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 57) WFLYCLINF0002: Started authorization cache from keycloak container
09:46:49,495 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 66) WFLYCLINF0002: Started keys cache from keycloak container
09:46:49,495 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 67) WFLYCLINF0002: Started users cache from keycloak container
09:46:49,495 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 63) WFLYCLINF0002: Started actionTokens cache from keycloak container
09:46:49,496 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 60) WFLYCLINF0002: Started clientSessions cache from keycloak container
09:46:49,766 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 68) WFLYCLINF0002: Started client-mappings cache from ejb container
09:46:49,830 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-4) WFLYSRV0273: Excluded subsystem webservices via jboss-deployment-structure.xml does not exist.
09:46:50,435 INFO  [org.keycloak.services] (ServerService Thread Pool -- 62) KC-SERVICES0001: Loading config from standalone.xml or domain.xml
09:46:50,777 INFO  [org.keycloak.url.DefaultHostnameProviderFactory] (ServerService Thread Pool -- 62) Frontend: <request>, Admin: <frontend>, Backend: <request>
09:46:50,897 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 62) WFLYCLINF0002: Started realmRevisions cache from keycloak container
09:46:50,902 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 62) WFLYCLINF0002: Started userRevisions cache from keycloak container
09:46:50,910 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 62) WFLYCLINF0002: Started authorizationRevisions cache from keycloak container
09:46:50,911 INFO  [org.keycloak.connections.infinispan.DefaultInfinispanConnectionProviderFactory] (ServerService Thread Pool -- 62) Node name: devlnxkeycloak01, Site name: null
09:46:53,394 INFO  [org.hibernate.jpa.internal.util.LogHelper] (ServerService Thread Pool -- 62) HHH000204: Processing PersistenceUnitInfo [
	name: keycloak-default
	...]
09:46:53,452 INFO  [org.hibernate.Version] (ServerService Thread Pool -- 62) HHH000412: Hibernate Core {5.3.13.Final}
09:46:53,454 INFO  [org.hibernate.cfg.Environment] (ServerService Thread Pool -- 62) HHH000206: hibernate.properties not found
09:46:53,592 INFO  [org.hibernate.annotations.common.Version] (ServerService Thread Pool -- 62) HCANN000001: Hibernate Commons Annotations {5.0.5.Final}
09:46:53,777 INFO  [org.hibernate.dialect.Dialect] (ServerService Thread Pool -- 62) HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
09:46:53,785 WARN  [org.hibernate.dialect.H2Dialect] (ServerService Thread Pool -- 62) HHH000431: Unable to determine H2 database version, certain features may not work
09:46:53,826 INFO  [org.hibernate.envers.boot.internal.EnversServiceImpl] (ServerService Thread Pool -- 62) Envers integration enabled? : true
09:46:54,602 INFO  [org.hibernate.orm.beans] (ServerService Thread Pool -- 62) HHH10005002: No explicit CDI BeanManager reference was passed to Hibernate, but CDI is available on the Hibernate ClassLoader.
09:46:54,669 INFO  [org.hibernate.validator.internal.util.Version] (ServerService Thread Pool -- 62) HV000001: Hibernate Validator 6.0.18.Final
09:46:55,849 INFO  [org.hibernate.hql.internal.QueryTranslatorFactoryInitiator] (ServerService Thread Pool -- 62) HHH000397: Using ASTQueryTranslatorFactory
09:46:56,593 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002225: Deploying javax.ws.rs.core.Application: class org.keycloak.services.resources.KeycloakApplication
09:46:56,594 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002205: Adding provider class org.keycloak.services.filters.KeycloakTransactionCommitter from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,595 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002200: Adding class resource org.keycloak.services.resources.JsResource from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,596 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002205: Adding provider class org.keycloak.services.error.KeycloakErrorHandler from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,596 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002200: Adding class resource org.keycloak.services.resources.ThemeResource from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,596 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002220: Adding singleton resource org.keycloak.services.resources.WelcomeResource from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,596 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002210: Adding provider singleton org.keycloak.services.util.ObjectMapperResolver from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,596 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002220: Adding singleton resource org.keycloak.services.resources.RealmsResource from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,597 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002220: Adding singleton resource org.keycloak.services.resources.RobotsResource from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,597 INFO  [org.jboss.resteasy.resteasy_jaxrs.i18n] (ServerService Thread Pool -- 62) RESTEASY002220: Adding singleton resource org.keycloak.services.resources.admin.AdminRoot from Application class org.keycloak.services.resources.KeycloakApplication
09:46:56,678 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 62) WFLYUT0021: Registered web context: '/auth' for server 'default-server'
09:46:56,787 INFO  [org.jboss.as.server] (ServerService Thread Pool -- 55) WFLYSRV0010: Deployed "keycloak-server.war" (runtime-name : "keycloak-server.war")
09:46:56,828 INFO  [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0212: Resuming server
09:46:56,830 INFO  [org.jboss.as] (Controller Boot Thread) WFLYSRV0060: Http management interface listening on http://127.0.0.1:9990/management
09:46:56,830 INFO  [org.jboss.as] (Controller Boot Thread) WFLYSRV0051: Admin console listening on http://127.0.0.1:9990
09:46:56,830 INFO  [org.jboss.as] (Controller Boot Thread) WFLYSRV0025: Keycloak 9.0.3 (WildFly Core 10.0.3.Final) started in 11980ms - Started 590 of 885 services (601 services are lazy, passive or on-demand)
09:48:05,023 INFO  [org.jboss.as.server] (Thread-2) WFLYSRV0272: Suspending server
09:48:05,025 INFO  [org.jboss.as.ejb3] (Thread-2) WFLYEJB0493: EJB subsystem suspension complete
09:48:05,026 INFO  [org.jboss.as.server] (Thread-2) WFLYSRV0220: Server shutdown has been requested via an OS signal
09:48:05,042 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-5) WFLYJCA0010: Unbound data source [java:jboss/datasources/KeycloakDS]
09:48:05,046 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-4) WFLYMAIL0002: Unbound mail session [java:jboss/mail/Default]
09:48:05,048 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-7) WFLYUT0008: Undertow HTTPS listener https suspending
09:48:05,055 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 4) WFLYUT0022: Unregistered web context: '/auth' from server 'default-server'
09:48:05,067 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-7) WFLYUT0007: Undertow HTTPS listener https stopped, was bound to 127.0.0.1:8443
09:48:05,084 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-8) WFLYJCA0010: Unbound data source [java:jboss/datasources/ExampleDS]
09:48:05,085 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-8) WFLYJCA0019: Stopped Driver service with driver-name = h2
09:48:05,091 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-3) WFLYUT0019: Host default-host stopping
09:48:05,098 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 71) WFLYCLINF0003: Stopped actionTokens cache from keycloak container
09:48:05,099 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 71) WFLYCLINF0003: Stopped authenticationSessions cache from keycloak container
09:48:05,100 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 71) WFLYCLINF0003: Stopped offlineSessions cache from keycloak container
09:48:05,101 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 73) WFLYCLINF0003: Stopped users cache from keycloak container
09:48:05,101 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 72) WFLYCLINF0003: Stopped authorization cache from keycloak container
09:48:05,105 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 71) WFLYCLINF0003: Stopped client-mappings cache from ejb container
09:48:05,105 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0008: Undertow HTTP listener default suspending
09:48:05,106 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 74) WFLYCLINF0003: Stopped loginFailures cache from keycloak container
09:48:05,109 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 4) WFLYCLINF0003: Stopped realms cache from keycloak container
09:48:05,110 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 78) WFLYCLINF0003: Stopped sessions cache from keycloak container
09:48:05,111 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 79) WFLYCLINF0003: Stopped offlineClientSessions cache from keycloak container
09:48:05,111 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 77) WFLYCLINF0003: Stopped clientSessions cache from keycloak container
09:48:05,111 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 76) WFLYCLINF0003: Stopped work cache from keycloak container
09:48:05,112 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0007: Undertow HTTP listener default stopped, was bound to 127.0.0.1:8080
09:48:05,116 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 75) WFLYCLINF0003: Stopped keys cache from keycloak container
09:48:05,120 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-1) WFLYUT0004: Undertow 2.0.27.Final stopping
09:48:05,120 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) WFLYSRV0028: Stopped deployment keycloak-server.war (runtime-name: keycloak-server.war) in 91ms
09:48:05,142 INFO  [org.jboss.as] (MSC service thread 1-6) WFLYSRV0050: Keycloak 9.0.3 (WildFly Core 10.0.3.Final) stopped in 113ms

Like I said earlier, enable DEBUG log level so you can see more detail + post the logs to an external service like pastebin and post the link here.
Also how do you start Keycloak exactly and show us the command.
The more details you give us from the start the more we can help.
A couple of things that could case this is calling System.exit from somewhere or pressing CTRL+C or closing the terminal, …