Issue deploying keycloak on docker with reverse proxy

So im trying to run a Keycloak server on my Plesk server in a docker container.

The issue is that my keycloak server dies after a while(or after an action, im not sure because nothing gets logged), all im getting in the log is

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.wildfly.extension.elytron.SSLDefinitions (jar:file:/opt/jboss/keycloak/modules/system/layers/base/org/wildfly/extension/elytron/main/wildfly-elytron-integration-11.1.1.Final.jar!/) to method com.sun.net.ssl.internal.ssl.Provider.isFIPS()
WARNING: Please consider reporting this to the maintainers of org.wildfly.extension.elytron.SSLDefinitions
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
*** JBossAS process (340) received KILL signal ***

I have the required env setting PROXY_ADDRESS_FORWARDING to true, and im pretty sure i followed the instructions properly on https://github.com/keycloak/keycloak-containers/blob/10.0.2/server/README.md

I have tried with and without TLS settings and it still just dies after about 5 min

here is some extra log dump after setting it to extreme verbose logging

[0m16:51:30,688 TRACE [org.jboss.modules] (ServerService Thread Pool -- 63) Attempting to find all resources META-INF/jpa-changelog-1.2.0.Beta1-db2.xml in Module "org.keycloak.keycloak-model-jpa" version 10.0.2 from local module loader @797cf65c (finder: local module finder @31bcf236 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base))
[0m16:51:30,705 TRACE [org.jboss.modules] (ServerService Thread Pool -- 63) Attempting to find all resources liquibase/parser/core/xml/dbchangelog-3.1.xsd in Module "org.keycloak.keycloak-model-jpa" version 10.0.2 from local module loader @797cf65c (finder: local module finder @31bcf236 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base))
[0m16:51:30,770 TRACE [org.jboss.modules] (ServerService Thread Pool -- 63) Attempting to find all resources META-INF/jpa-changelog-1.2.0.CR1.xml in Module "org.keycloak.keycloak-model-jpa" version 10.0.2 from local module loader @797cf65c (finder: local module finder @31bcf236 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base))
[0m16:51:30,771 TRACE [org.jboss.modules] (ServerService Thread Pool -- 63) Attempting to find all resources liquibase/parser/core/xml/dbchangelog-3.1.xsd in Module "org.keycloak.keycloak-model-jpa" version 10.0.2 from local module loader @797cf65c (finder: local module finder @31bcf236 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base))
[0m16:51:30,882 TRACE [org.jboss.modules] (ServerService Thread Pool -- 63) Attempting to find all resources META-INF/jpa-changelog-1.2.0.CR1-db2.xml in Module "org.keycloak.keycloak-model-jpa" version 10.0.2 from local module loader @797cf65c (finder: local module finder @31bcf236 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base))
[0m16:51:30,904 TRACE [org.jboss.modules] (ServerService Thread Pool -- 63) Attempting to find all resources liquibase/parser/core/xml/dbchangelog-3.1.xsd in Module "org.keycloak.keycloak-model-jpa" version 10.0.2 from local module loader @797cf65c (finder: local module finder @31bcf236 (roots: /opt/jboss/keycloak/modules,/opt/jboss/keycloak/modules/system/layers/keycloak,/opt/jboss/keycloak/modules/system/layers/base))
[0m*** JBossAS process (148) received KILL signal ***

I am running 10.0.1 like this with SSL disabled and it’s working fine. Try downgrading?

Nope, still getting OOM crashes

OOM? Are you actually out of memory then? Have you limited the resources of the container too much?

Yes my VPS itself is logging OOM errors even.

first i was running the container with no memory limit, which made it crash(despite having 1 GB max) and then i limited it to 512 MB, which seems to keep it alive for longer before it crashes.

Where does the 1Gb limit come from? Is that all the VM has? I have not set any limits at all. But my setup is tiny, 1 realm, 10 users, a handful of clients.

Does any Java application work in 1Gb? It’s not much and Java isn’t lean.

Keycloak requires at least 512MB of memory so a VPS with 512MB isn’t enough, you’ll need one with at least 1GB. It’s not really a Java thing in this case but a JBoss thing.
They are working on a Keycloak version that is more lean but meanwhile we need a bit more memory.
I’ve run Keycloak on a 1GB VPS on Digitalocean without problems.

Well my VPS is 1GB aswell but ik keep running into those memory issues ever 5-30 min, i have set it to reboot on a crash but its certainly anoying.

1GB with what? Seems you’re using Plesk which on it’s own already has a big memory requirement.
What DB are you using? I’m using PostgreSQL which is less of a memory hog and a superior DB anyway :stuck_out_tongue:
How much memory is in use when Keycloak is not running?

currently just running it with h2, planning on putting it on PG yeah

I think ill also upgrade the hardware on my VPS, im currently overpaying a bit for an old config.

but yeah memory does seem short even without KC