I click on kibana apm ui and some errors will appear. I checked the log of kibana and found the following
> "message":"[illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [service.name] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [service.name] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [service.name] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead. (and) [illegal_argument_exception] Fielddata is disabled on text fields by default. Set fielddata=true on [host.hostname] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead."}
es log
https://paste.ubuntu.com/p/BthFC2snS3/
logstash conf
https://paste.ubuntu.com/p/JVYgJdrDhv/
I don't know why this problem happened suddenly