KB-2328 Data Server hangs on startup

Ryan Good — Wed, 22 Jan 2025 22:59:12 GMT

Current Revision posted to Appian Knowledge Base by Ryan Good on 1/22/2025 10:59:12 PM

Symptoms

When starting Appian, the data server hangs on the following line in watchdog.log while the q engines are starting.

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Eventually, if given enough time, the watchdog.log will print the following line:

Caused by: io.vertx.core.http.WebsocketRejectedException: Websocket connection attempt returned HTTP status code 401

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Duplicate entries.
Invalid unicode characters.
Password is longer than expected.

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Ensure that the value matches the data-server-sec.properties located in <APPIAN_HOME>/conf
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Start Data Server.

If the issue persists, please open a case with Appian Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: January 2025

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-2328 Data Server hangs on startup

Ryan Good — Wed, 22 Jan 2025 22:59:00 GMT

Revision 8 posted to Appian Knowledge Base by Ryan Good on 1/22/2025 10:59:00 PM

Symptoms

When starting Appian, the data server hangs on the following line in watchdog.log while the q engines are starting.

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Eventually, if given enough time, the watchdog.log will print the following line:

Caused by: io.vertx.core.http.WebsocketRejectedException: Websocket connection attempt returned HTTP status code 401

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Duplicate entries.
Invalid unicode characters.
Password is longer than expected.

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Ensure that the value matches the data-server-sec.properties located in <APPIAN_HOME>/conf
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Start Data Server.

If the issue persists, please open a case with Appian Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: January 2025

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-XXXX Data Server hangs on startup

pauline.delacruz — Wed, 22 Jan 2025 22:56:01 GMT

Revision 7 posted to Appian Knowledge Base by pauline.delacruz on 1/22/2025 10:56:01 PM

Symptoms

When starting Appian, the data server hangs on the following line in watchdog.log while the q engines are starting.

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Eventually, if given enough time, the watchdog.log will print the following line:

Caused by: io.vertx.core.http.WebsocketRejectedException: Websocket connection attempt returned HTTP status code 401

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Duplicate entries.
Invalid unicode characters.
Password is longer than expected.

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Ensure that the value matches the data-server-sec.properties located in <APPIAN_HOME>/conf
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Start Data Server.

If the issue persists, please open a case with Appian Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: January 2025

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-XXXX Data Server hangs on startup

Ryan Good — Tue, 27 Aug 2024 18:49:18 GMT

Revision 6 posted to Appian Knowledge Base by Ryan Good on 8/27/2024 6:49:18 PM

Symptoms

When starting Appian, the data server hangs on the following line in watchdog.log while the q engines are starting.

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Eventually, if given enough time, the watchdog.log will print the following line:

Caused by: io.vertx.core.http.WebsocketRejectedException: Websocket connection attempt returned HTTP status code 401

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Duplicate entries.
Invalid unicode characters.
Password is longer than expected.

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Start Data Server.

If the issue persists, please open a case with Appian Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: August 2024

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-XXXX Data Server hangs on startup

Ryan Good — Tue, 27 Aug 2024 18:48:42 GMT

Revision 5 posted to Appian Knowledge Base by Ryan Good on 8/27/2024 6:48:42 PM

Symptoms

When starting Appian, the data server hangs on the following line in the watchdog.log while the q engines are starting.

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Eventually, if given enough time, the watchdog.log will print the following line:

Caused by: io.vertx.core.http.WebsocketRejectedException: Websocket connection attempt returned HTTP status code 401

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Duplicate entries.
Invalid unicode characters.
Password is longer than expected.

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Start Data Server.

If the issue persists, please open a case with Appian Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: August 2024

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-XXXX Data Server hangs on startup

pauline.delacruz — Mon, 19 Aug 2024 21:31:46 GMT

Revision 4 posted to Appian Knowledge Base by pauline.delacruz on 8/19/2024 9:31:46 PM

Symptoms

When starting Appian, the data server hangs on when starting the q engines on the following line in the watchdog.log.

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Eventually, if given enough time, the watchdog.log will print the following line:

Caused by: io.vertx.core.http.WebsocketRejectedException: Websocket connection attempt returned HTTP status code 401

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Duplicate entries.
Invalid unicode characters.
Password is longer than expected.

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Start Data Server.

If the issue persists, please open a case with Appian Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: August 2024

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-XXXX Data Server hangs on startup

pauline.delacruz — Mon, 19 Aug 2024 21:30:57 GMT

Revision 3 posted to Appian Knowledge Base by pauline.delacruz on 8/19/2024 9:30:57 PM

Symptoms

When starting Appian, the data server hangs on when starting the q engines on the following line in the watchdog.log

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Eventually, if given enough time, the watchdog.log will print the following:

Caused by: io.vertx.core.http.WebsocketRejectedException: Websocket connection attempt returned HTTP status code 401

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Invalid unicode characters
Password is longer than expected
Duplicate entries

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Start Data Server.

If the issue persists, please open a case with Appian Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: August 2024

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-XXXX Data Server hangs on startup

pauline.delacruz — Mon, 19 Aug 2024 21:14:18 GMT

Revision 2 posted to Appian Knowledge Base by pauline.delacruz on 8/19/2024 9:14:18 PM

Symptoms

After upgrading Appian, the data server hangs on startup on the following line in the watchdog.log

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Invalid unicode characters
Password is longer than expected
Duplicate entries

Action

Stop the Data Server.
Ensure that a value is specified for dataserver.password in the data-server-sec.properties file and is valid.
1. For high availability (HA) sites, ensure that the value is the same on all nodes of the cluster.
Save the changes.
Start Data Server.

If the issue persists, please open a support case with Appian Technical Support.

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: August 2024

Tags: data server, infrastructure

[DRAFT SUPP-363] KB-XXXX Data Server hangs on startup

pauline.delacruz — Wed, 07 Aug 2024 20:25:30 GMT

Revision 1 posted to Appian Knowledge Base by pauline.delacruz on 8/7/2024 8:25:30 PM

Symptoms

After upgrading Appian, the data server hangs on startup on the following line in the watchdog.log

{"level":"INFO","time":"YYYY-MM-DDTHH:MM:SS.mmmZ","logger":"watchdog","caller":"QStarter.java:78","thread":"process-starter-4","msg":"Starting Q process: Config{script=rts.q, hostAndPort=localhost:5453, args=[-rts, 1]}"}

Running a netstat against all of the q engine ports shows hundreds of processes are using the ports.

Cause

The data-server-sec.properties file, found in <APPIAN_HOME>/data-server/conf does not have a valid value.

This can occur due to one or more of the following:

Invalid unicode characters
Password is longer than expected
Duplicate entries

Action

Stop the Data Server
Fix the file to have a single entry
Start Data Server

Affected Versions

This article applies to all self-managed versions of Appian.

Last Reviewed: August 2024