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Hive DB issue in connection

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Hi,

Below is the logs

Host checks started.
Check execute list: db_connection_check
DB connection check started.
WARNING: File /var/lib/ambari-agent/cache/DBConnectionVerification.jar already exists, assuming it was downloaded before
WARNING: File /var/lib/ambari-agent/cache/mysql-connector-java.jar already exists, assuming it was downloaded before
call['/usr/jdk64/jdk1.8.0_112/bin/java -cp /var/lib/ambari-agent/cache/DBConnectionVerification.jar:/var/lib/ambari-agent/cache/mysql-connector-java.jar -Djava.library.path=/var/lib/ambari-agent/cache org.apache.ambari.server.DBConnectionVerification "jdbc:mysql://host.com/metastore" "hive" [PROTECTED] com.mysql.jdbc.Driver'] {}
call returned (1, 'ERROR: Unable to connect to the DB. Please check DB connection properties.\ncom.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure\n\nThe last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.')
DB connection check completed.
Host checks completed.
Check db_connection_check was unsuccessful. Exit code: 1. Message: ERROR: Unable to connect to the DB. Please check DB connection properties.
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

Command failed after 1 tries

SheltonAnswer

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@irfangk1

Please download it from here irfangk1_download

HTH

Shelton

Gold ⭐️⭐️⭐️

@irfangk1

Can you share your ambari.server. properties and your /etc/hosts

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irfangk1Author

Gold ⭐️

ambari.server. properties as below

agent.package.install.task.timeout=1800
agent.stack.retry.on_repo_unavailability=false
agent.stack.retry.tries=5
agent.task.timeout=900
agent.threadpool.size.max=25
ambari-server.user=root
ambari.python.wrap=ambari-python-wrap
bootstrap.dir=/var/run/ambari-server/bootstrap
bootstrap.script=/usr/lib/ambari-server/lib/ambari_server/bootstrap.py
bootstrap.setup_agent.script=/usr/lib/ambari-server/lib/ambari_server/setupAgent .py
check_database_skipped=false
client.threadpool.size.max=25
common.services.path=/var/lib/ambari-server/resources/common-services
custom.action.definitions=/var/lib/ambari-server/resources/custom_action_definit ions
custom.mysql.jdbc.name=mysql-connector-java.jar
custom.postgres.jdbc.name=postgresql-42.2.8.jar
extensions.path=/var/lib/ambari-server/resources/extensions
gpl.license.accepted=false
http.cache-control=no-store
http.charset=utf-8
http.pragma=no-cache
http.strict-transport-security=max-age=31536000
http.x-content-type-options=nosniff
http.x-frame-options=DENY
http.x-xss-protection=1; mode=block
java.home=/usr/jdk64/jdk1.8.0_112
java.releases=jdk1.8
java.releases.ppc64le=
jce.download.supported=true
jce.name=jce_policy-8.zip
jdk.download.supported=true
jdk.name=jdk-8u112-linux-x64.tar.gz
jdk1.8.desc=Oracle JDK 1.8 + Java Cryptography Extension (JCE) Policy Files 8
jdk1.8.dest-file=jdk-8u112-linux-x64.tar.gz
jdk1.8.home=/usr/jdk64/
jdk1.8.jcpol-file=jce_policy-8.zip
jdk1.8.jcpol-url=http://public-repo-1.hortonworks.com/ARTIFACTS/jce_policy-8.zip
jdk1.8.re=(jdk.*)/jre
jdk1.8.url=http://public-repo-1.hortonworks.com/ARTIFACTS/jdk-8u112-linux-x64.ta r.gz
kerberos.keytab.cache.dir=/var/lib/ambari-server/data/cache
kerberos.operation.verify.kdc.trust=true
local.database.user=postgres
metadata.path=/var/lib/ambari-server/resources/stacks
mpacks.staging.path=/var/lib/ambari-server/resources/mpacks
pid.dir=/var/run/ambari-server
previous.custom.mysql.jdbc.name=mysql-connector-java.jar
recommendations.artifacts.lifetime=1w
recommendations.dir=/var/run/ambari-server/stack-recommendations
resources.dir=/var/lib/ambari-server/resources
rolling.upgrade.skip.packages.prefixes=
security.server.disabled.ciphers=TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384|TLS_ECD HE_RSA_WITH_AES_256_CBC_SHA384|TLS_RSA_WITH_AES_256_CBC_SHA256|TLS_ECDH_ECDSA_WI TH_AES_256_CBC_SHA384|TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384|TLS_DHE_RSA_WITH_AES_ 256_CBC_SHA256|TLS_DHE_DSS_WITH_AES_256_CBC_SHA256|TLS_ECDHE_ECDSA_WITH_AES_256_ CBC_SHA|TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA|TLS_RSA_WITH_AES_256_CBC_SHA|TLS_ECDH _ECDSA_WITH_AES_256_CBC_SHA|TLS_ECDH_RSA_WITH_AES_256_CBC_SHA|TLS_DHE_RSA_WITH_A ES_256_CBC_SHA|TLS_DHE_DSS_WITH_AES_256_CBC_SHA|TLS_ECDHE_ECDSA_WITH_AES_128_CBC _SHA256|TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256|TLS_RSA_WITH_AES_128_CBC_SHA256|TL S_ECDH_ECDSA_WITH_AES_128_CBC_SHA256|TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256|TLS_DH E_RSA_WITH_AES_128_CBC_SHA256|TLS_DHE_DSS_WITH_AES_128_CBC_SHA256|TLS_ECDHE_ECDS A_WITH_AES_128_CBC_SHA|TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA|TLS_RSA_WITH_AES_128_C BC_SHA|TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA|TLS_ECDH_RSA_WITH_AES_128_CBC_SHA|TLS _DHE_RSA_WITH_AES_128_CBC_SHA|TLS_DHE_DSS_WITH_AES_128_CBC_SHA|TLS_ECDHE_ECDSA_W ITH_3DES_EDE_CBC_SHA|TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA|TLS_ECDH_ECDSA_WITH_3DE S_EDE_CBC_SHA|TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA|SSL_DHE_RSA_WITH_3DES_EDE_CBC_S HA|SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA|TLS_EMPTY_RENEGOTIATION_INFO_SCSV|TLS_DH_an on_WITH_AES_256_CBC_SHA256|TLS_ECDH_anon_WITH_AES_256_CBC_SHA|TLS_DH_anon_WITH_A ES_256_CBC_SHA|TLS_DH_anon_WITH_AES_128_CBC_SHA256|TLS_ECDH_anon_WITH_AES_128_CB C_SHA|TLS_DH_anon_WITH_AES_128_CBC_SHA|TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA|SSL_D H_anon_WITH_3DES_EDE_CBC_SHA|SSL_RSA_WITH_DES_CBC_SHA|SSL_DHE_RSA_WITH_DES_CBC_S HA|SSL_DHE_DSS_WITH_DES_CBC_SHA|SSL_DH_anon_WITH_DES_CBC_SHA|SSL_RSA_EXPORT_WITH _DES40_CBC_SHA|SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA|SSL_DHE_DSS_EXPORT_WITH_DES 40_CBC_SHA|SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA|TLS_RSA_WITH_NULL_SHA256|TLS_EC DHE_ECDSA_WITH_NULL_SHA|TLS_ECDHE_RSA_WITH_NULL_SHA|SSL_RSA_WITH_NULL_SHA|TLS_EC DH_ECDSA_WITH_NULL_SHA|TLS_ECDH_RSA_WITH_NULL_SHA|TLS_ECDH_anon_WITH_NULL_SHA|SS L_RSA_WITH_NULL_MD5|TLS_KRB5_WITH_3DES_EDE_CBC_SHA|TLS_KRB5_WITH_3DES_EDE_CBC_MD 5|TLS_KRB5_WITH_DES_CBC_SHA|TLS_KRB5_WITH_DES_CBC_MD5|TLS_KRB5_EXPORT_WITH_DES_C BC_40_SHA|TLS_KRB5_EXPORT_WITH_DES_CBC_40_MD5
security.server.keys_dir=/var/lib/ambari-server/keys
server.connection.max.idle.millis=900000
server.execution.scheduler.isClustered=false
server.execution.scheduler.maxDbConnections=5
server.execution.scheduler.maxThreads=5
server.execution.scheduler.misfire.toleration.minutes=480
server.fqdn.service.url=http://169.254.169.254/latest/meta-data/public-hostname
server.http.session.inactive_timeout=1800
server.jdbc.connection-pool=internal
server.jdbc.database=postgres
server.jdbc.database_name=ambari
server.jdbc.postgres.schema=ambari
server.jdbc.user.name=ambari
server.jdbc.user.passwd=/etc/ambari-server/conf/password.dat
server.os_family=ubuntu16
server.os_type=ubuntu16
server.persistence.type=local
server.python.log.level=INFO
server.python.log.name=ambari-server-command.log
server.stages.parallel=true
server.task.timeout=1200
server.tmp.dir=/var/lib/ambari-server/data/tmp
server.version.file=/var/lib/ambari-server/resources/version
shared.resources.dir=/usr/lib/ambari-server/lib/ambari_commons/resources
skip.service.checks=false
stack.java.home=/usr/jdk64/jdk1.8.0_112
stack.jce.name=jce_policy-8.zip
stack.jdk.name=jdk-8u112-linux-x64.tar.gz
stackadvisor.script=/var/lib/ambari-server/resources/scripts/stack_advisor.py
ulimit.open.files=65536
upgrade.parameter.convert.hive.tables.timeout=86400
upgrade.parameter.move.hive.tables.timeout=86400
user.inactivity.timeout.default=0
user.inactivity.timeout.role.readonly.default=0
views.ambari.request.connect.timeout.millis=30000
views.ambari.request.read.timeout.millis=45000
views.http.cache-control=no-store
views.http.charset=utf-8
views.http.pragma=no-cache
views.http.strict-transport-security=max-age=31536000
views.http.x-content-type-options=nosniff
views.http.x-frame-options=SAMEORIGIN
views.http.x-xss-protection=1; mode=block
views.request.connect.timeout.millis=5000
views.request.read.timeout.millis=10000
views.skip.home-directory-check.file-system.list=wasb,adls,adl
webapp.dir=/usr/lib/ambari-server/web

*** etc/host below
127.0.0.1 localhost
127.0.0.1 inairsr541012v9

172.27.3.12 inairsr541012v9.ntil.com inairsr541012v9
172.27.3.13 inairsr542007v3.ntil.com inairsr542007v3
172.27.3.14 inairsr542007v4.ntil.com inairsr542007v4

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

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Shelton

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@irfangk1

There is something wrong I don't see the database entry in your ambari.server.properties how will it bind ?
Something like below

server.jdbc.url=jdbc:postgresql://<HOSTNAME>:<PORT>/ambari?ssl=true

Can you validate, you are using the embedded postgres right?

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Shelton

Gold ⭐️⭐️⭐️

@irfangk1

This line in your error log says it all

org.apache.ambari.server.DBConnectionVerification "jdbc:mysql://host.com/metastore" "hive"

The format should be jdbc:mysql://host-name: port usually for Mysql it's 3306 to initiate any database connectivity you need to know the port at which the database is waiting for connections

Ambari.properties

# cat /etc/ambari-server/conf/ambari.properties | grep mysql
custom.mysql.jdbc.name=mysql-connector-java.jar
previous.custom.mysql.jdbc.name=mysql-connector-java.jar
server.jdbc.database=mysql
server.jdbc.driver=com.mysql.jdbc.Driver
server.jdbc.rca.driver=com.mysql.jdbc.Driver
server.jdbc.rca.url=jdbc:mysql://your_host:3306/ambari
server.jdbc.url=jdbc:mysql://your_host:3306/ambari

Backup these files

Verification jar

# mv /var/lib/ambari-agent/cache/DBConnectionVerification.jar /var/lib/ambari-agent/cache/DBConnectionVerification.jar.bck

MySql connector

# mv /var/lib/ambari-agent/cache/mysql-connector-java.jar /var/lib/ambari-agent/cache/mysql-connector-java.jar.bck

Then restart Ambari and the agent

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Shelton

Gold ⭐️⭐️⭐️

@irfangk1

If you switched to Mysql why do you have these entries in your ambari.properties

server.jdbc.database=postgres
server.jdbc.database_name=ambari
server.jdbc.postgres.schema=ambari

Can you share the output of

# cat /etc/ambari-server/conf/ambari.properties | grep mysql

Why is that in the log again I see "jdbc:mysql://host.com/metastore" "hive" where is the PORT number?

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irfangk1Author

Gold ⭐️

cat /etc/ambari-server/conf/ambari.properties | grep mysql
custom.mysql.jdbc.name=mysql-connector-java.jar
previous.custom.mysql.jdbc.name=mysql-connector-java.jar

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Shelton

Gold ⭐️⭐️⭐️

@irfangk1
Can you share the screenshot of your Ambari Hive config because when I see "jdbc:mysql://host.com/metastore" "hive" that means you dont have not The default TCP port

for PostgreSQL is usually 5432 see in the postgresql.conf

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irfangk1Author

Gold ⭐️

Mysql is not starting now check the below error

service mysql restart
Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.

& after putting port of mysql,

WARNING: File /var/lib/ambari-agent/cache/DBConnectionVerification.jar already exists, assuming it was downloaded before
WARNING: File /var/lib/ambari-agent/cache/mysql-connector-java.jar already exists, assuming it was downloaded before
2019-10-11 10:26:28,466 - call['/usr/jdk64/jdk1.8.0_112/bin/java -cp /var/lib/ambari-agent/cache/DBConnectionVerification.jar:/var/lib/ambari-agent/cache/mysql-connector-java.jar -Djava.library.path=/var/lib/ambari-agent/cache org.apache.ambari.server.DBConnectionVerification "jdbc:mysql://172.27.3.12: 3306" "hive" [PROTECTED] com.mysql.jdbc.Driver'] {}
2019-10-11 10:26:28,607 - call returned (1, 'ERROR: Unable to connect to the DB. Please check DB connection properties.\ncom.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Cannot load connection class because of underlying exception: \'java.lang.NumberFormatException: For input string: " 3306"\'.')
2019-10-11 10:26:28,608 - DB connection check completed.
2019-10-11 10:26:28,608 - Host checks completed.
2019-10-11 10:26:28,608 - Check db_connection_check was unsuccessful. Exit code: 1. Message: ERROR: Unable to connect to the DB. Please check DB connection properties.
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Cannot load connection class because of underlying exception: 'java.lang.NumberFormatException: For input string: " 3306"'.

Command failed after 1 tries

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Shelton

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@irfangk1

That means you didn't install MySQL. Can I ask you one question? What documentation are you using as a reference?The basic steps are described when you are preparing the environment. To me it seems you launched the deployment using the embedded database Postgresql but now you want to switch to MySQL. To do that you need to install mysql and pre-create the ambari database before launching the Ambari server setup, that explains why you are getting all those errors.
I can send you a procedure in 9 hours

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irfangk1Author

Gold ⭐️

Please send procedure. Thanks

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SheltonAnswer

Gold ⭐️⭐️⭐️

@irfangk1

Please download it from here irfangk1_download

HTH

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