【原創】大數據基礎之ElasticSearch（3）升級

elasticsearch版本升級方案

 

經常使用的滾動升級過程（Rolling Upgrade）以下：

$ curl -XPUT '$es_server:9200/_cluster/settings?pretty' -H 'Content-Type: application/json' -d '{"transient":{"cluster.routing.allocation.enable":"none"}}'
$ curl -XPOST '$es_server/_flush/synced?pretty'
$ systemctl stop elasticsearch.service

# upgrade elasticsearch

$ systemctl start elasticsearch.service
$ curl -XGET '$es_server:9200/_cat/nodes?pretty'
$ curl -XPUT '$es_server:9200/_cluster/settings?pretty' -H 'Content-Type: application/json' -d '{"transient":{"cluster.routing.allocation.enable":"all"}}'
$ curl -XGET '$es_server:9200/_cat/health?pretty'

以上爲單個節點升級過程，逐個節點操做便可

參考：
https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html
https://www.elastic.co/guide/en/elasticsearch/reference/current/rolling-upgrades.html