Hướng dẫn Setup ElasticSearch with ElasticPress trên Docker

Elastic Search already has docker image available. So lets use that Docker image to setup elastic search with WordPress.

Step 1: Install docker

https://docs.docker.com/engine/installation/linux/ubuntulinux/

Step 2: Create an Elastic Search container

docker run -d -v "/var/esdata":/usr/share/elasticsearch/data elasticsearch

Repo url: https://hub.docker.com/_/elasticsearch/

Step 3: Note docker container ID

^_^[root@localhost:~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED              STATUS              PORTS                NAMES
763fd2ca5532        elasticsearch       "/docker-entrypoint.s"   About a minute ago   Up About a minute   9200/tcp, 9300/tcp   silly_bohr

Step 4: Note container’s Private IP

^_^[root@localhost:~]# docker inspect {container id}

You will get output something like below:

"Gateway": "172.17.0.1",
"IPAddress": "172.17.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
...

Step 5: Start Elastic Search Service

First lets get a shell access to our docker container

docker exec -t -i 763fd2ca5532 /bin/bash

on second step check elastic search services status and start if not running.

root@763fd2ca5532:~# service elasticsearch status

elasticsearch is not running ... failed!

root@763fd2ca5532:~# service elasticsearch start

Starting Elasticsearch Server:sysctl: setting key "vm.max_map_count": Read-only file system.

root@763fd2ca5532:~# service elasticsearch status

elasticsearch is running.

Now lets get out of docker shell:

Check elastic search status from outside.

^_^[root@localhost:~]# curl http://{Container_IP}:9200
{
"name" : "Bandit",
"cluster_name" : "elasticsearch",
"version" : {
"number" : "2.3.3",
"build_hash" : "218bdf10790eef486ff2c41a3df5cfa32dadcfde",
"build_timestamp" : "2016-05-17T15:40:04Z",
"build_snapshot" : false,
"lucene_version" : "5.5.0"
},
"tagline" : "You Know, for Search"
}

Step 6 : Install ElasticPress plugin on wordpress

Install this plugin on your wordpress site – https://github.com/10up/ElasticPress

Add something like this on your wp-config.php. Replace {container_ip} with your docker ip.

define( 'EP_HOST', 'http://{container_ip}:9200' );

Run indexing for first time from web setting or use below wp-cli command :

wp elasticpress index

Check Elastic Search STATUS:

curl http://{container_ip}:9200/_stats