How to Solve elasticsearch-7.15.1 operation errors.
The elasticsearch 7.13.3 is not unloaded completely, and some data remains in the /var/lib/elasticsearch path, which needs to be deleted at the same time First, install elasticsearch 7.13.3, then uninstall it, and then install elasticsearch 7.13.2, start to report an error: : cannot downgrade a node from version to version Īt .upgradeToCurrentVersion(NodeMetadata.java:83) ~Īt .loadNodeMetadata(NodeEnvironment.java:423) ~Īt .(NodeEnvironment.java:320) ~Īt .(Node.java:368) ~Īt .(Node.java:278) ~Īt $5.(Bootstrap.java:217) ~Īt .setup(Bootstrap.java:217) ~Īt .init(Bootstrap.java:397) Īt .init(Elasticsearch.java:159) Īt .execute(Elasticsearch.java:150) Īt .execute(EnvironmentAwareCommand.java:75) Īt .mainWithoutErrorHandling(Command.java:116) Īt .main(Command.java:79) Īt .main(Elasticsearch.java:115) Īt .main(Elasticsearch.java:81)