After upgrading docker image from Graylog 4.2.3 to 4.3.2 the Slack plugin 3.1.0 stopped to work and configuration is not available from Graylog UI.
Error from Graylog output:
com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalArgumentException: Output type is not supported: org.graylog2.plugins.slack.output.SlackMessageOutput
Caused by: java.lang.IllegalArgumentException: Output type is not supported: org.graylog2.plugins.slack.output.SlackMessageOutput
Docker setup:
FROM graylog/graylog:4.3.2
USER root
RUN apt-get update \
&& apt-get install -y wget
RUN wget -O /usr/share/graylog/plugin/graylog-plugin-slack-3.1.0 https://github.com/graylog-labs/graylog-plugin-slack/releases/download/3.1.0/graylog-plugin-slack-3.1.0.jar
COPY patterns/* /opt/
USER ${GRAYLOG_USER}
After upgrading docker image from Graylog 4.2.3 to 4.3.2 the Slack plugin 3.1.0 stopped to work and configuration is not available from Graylog UI.
Error from Graylog output:
Docker setup: