Kibanaで、以下の様にアラートが出ているので、7系から5系にダウングレードする。
This version of Kibana requires Elasticsearch v5.6.16 on all nodes. I found the following incompatible nodes in your cluster: v7.10.1 @ 127.0.0.1:9200 (127.0.0.1)
$ yum remove elasticsearch
$ cd /etc/yum.repos.d/
[elasticsearch-5.x] name=Elasticsearch repository for 5.x packages baseurl=https://artifacts.elastic.co/packages/5.x/yum gpgcheck=1 gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch enabled=1 autorefresh=1 type=rpm-md
$ sudo yum install elasticsearch-5.6.16
$ sudo vi /etc/elasticsearch/jvm.options
-Xms256m -Xmx256m
$ sudo service elasticsearch start
$sudo vi /etc/elasticsearch/elasticsearch.yml
network.host: 0.0.0.0
$ sudo service elasticsearch start
Starting elasticsearch (via systemctl): [ OK ]
$ sudo systemctl status elasticsearch -l
localhost elasticsearch[28744]: OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
何故だ? さっぱりわからん。。。
