Apache Atlas not working - green in Cloudera Manager but got 503 Service Unavailable ERROR - CDP 7.1.6

[#1]

Hi everyone,

I have installed CDP 7.1.6 cluster, with kerberos and TLS enabled.

All services works fine except Atlas I get the error:

HTTP ERROR 503 Service Unavailable
URI: /
STATUS: 503
MESSAGE: Service Unavailable

Needed kafka topics, hbase tables and Solr collections all are created, needed policies on Ranger too are good

I cannot neither enable the service Atlas for HBase

I don't have any Error on atlas application.log :

Any idea ?

2021-10-24 21:03:45,634 INFO - [main:] ~ Attempting to retrieve password for key password from cert.stores.credential.provider.path configured credential provider path localjceks://file//var/run/cloudera-scm-agent/process/1546354754-atlas-ATLAS_SERVER/conf/atlascreds.localjceks (SecurityUtil:63)
2021-10-24 21:03:45,638 DEBUG - [main:] ~ backing jks path initialized to file:/var/run/cloudera-scm-agent/process/1546354754-atlas-ATLAS_SERVER/conf/atlascreds.localjceks (AbstractJavaKeyStoreProvider:169)
2021-10-24 21:03:45,638 DEBUG - [main:] ~ initialized local file as '/var/run/cloudera-scm-agent/process/1546354754-atlas-ATLAS_SERVER/conf/atlascreds.localjceks'. (LocalKeyStoreProvider:123)
2021-10-24 21:03:45,639 DEBUG - [main:] ~ the local file exists and is size 1481 (LocalKeyStoreProvider:125)
2021-10-24 21:03:45,639 TRACE - [main:] ~ we can read the local file. (LocalKeyStoreProvider:128)
2021-10-24 21:03:45,639 TRACE - [main:] ~ we can write the local file. (LocalKeyStoreProvider:131)
2021-10-24 21:03:45,740 INFO - [main:] ~ Attempting to retrieve password for key truststore.password from cert.stores.credential.provider.path configured credential provider path localjceks://file//var/run/cloudera-scm-agent/process/1546354754-atlas-ATLAS_SERVER/conf/atlascreds.localjceks (SecurityUtil:63)
2021-10-24 21:03:45,745 DEBUG - [main:] ~ backing jks path initialized to file:/var/run/cloudera-scm-agent/process/1546354754-atlas-ATLAS_SERVER/conf/atlascreds.localjceks (AbstractJavaKeyStoreProvider:169)
2021-10-24 21:03:45,746 DEBUG - [main:] ~ initialized local file as '/var/run/cloudera-scm-agent/process/1546354754-atlas-ATLAS_SERVER/conf/atlascreds.localjceks'. (LocalKeyStoreProvider:123)
2021-10-24 21:03:45,746 DEBUG - [main:] ~ the local file exists and is size 1481 (LocalKeyStoreProvider:125)
2021-10-24 21:03:45,746 TRACE - [main:] ~ we can read the local file. (LocalKeyStoreProvider:128)
2021-10-24 21:03:45,746 TRACE - [main:] ~ we can write the local file. (LocalKeyStoreProvider:131)
2021-10-24 21:05:53,494 DEBUG - [main:] ~ <== AtlasErrorCode.getMessage([]) (AtlasErrorCode:247)
2021-10-24 21:05:53,494 DEBUG - [main:] ~ ==> AtlasErrorCode.getMessage([]): EmbeddedServer.Start: failed! (AtlasErrorCode:254)

[#2 · Accepted solution]

I finally managed to resolve this problem with the help of the cloudera support

we have below error in log

---------- WARN - [main:]
~ Failed startup of context o.e.j.w.WebAppContext@6c5945a7{/,file:///opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/lib/atlas/server/webapp/atlas/,UNAVAILABLE}
{/opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/lib/atlas/server/webapp/atlas} 
(WebAppContext:533) java.net.ConnectException: Connexion terminée par expiration du délai d'attente (Connection timed out)

it seems to be a known issue :

https://community.cloudera.com/t5/Customer/quot-HTTP-ERROR-503-Service-Unavailable-URI-quot-when-Atl...

So the solution is :

in each Atlas host

- Delete the following lines from /opt/cloudera/parcels/CDH-7.1.6-1.cdh7.1.6.p0.10506313/lib/atlas/server/webapp/atlas/WEB-INF/web.xml

20 <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
21 http://java.sun.com/dtd/web-app_2_3.dtd> 

- Restart ATLAS