小故事
不想看小故事,直接往下看纯技术内容。
陈皮是一名不务正业的gai溜子,每天无所事事,每日都需要为生计发愁。
"哎,怎么混啊,要啥没啥",陈皮哀叹道。
这时,天空突然阴云密布,雷声隆隆。
陈皮:"妈的,怎么突然下起雨来,这个世道真是难受!干脆把我劈死算了,我懒得活了"。
"小子,你的要求我收到了,这就送你去投胎"。只见乌云之上隐隐浮现出一双巨大的眼睛。
轰隆,一道五色雷,瞬间劈向了陈皮。
"啊!你个混蛋!"话音未落,只见一道五色神霓劈向了陈皮,整个人顿时化为焦尸。
"我死了吗?我这是到了哪里?"陈皮环视四周虚幻的景象,感叹道。
只见四周回荡起一道洪亮的声音:"小子,我听到了你的请求,所以用雷劈死了你,这就送你去投胎。"
"???你大爷的,我 x 你xx,你全家xxx",话音未落,他的灵魂已经被传送到另一个崭新的世界。
"小子,我送你一本绝世武功秘籍 <<跟我从0开始学Elasticsearch8.0>>
,修炼好它,你将成为一代宗师"。就在陈皮的灵魂深处,传来一道似笑非笑的声音。
本章完...
后续的技术文章,都会以 ES 为主线,展开小说故事。
背景
使用 docker-compose 搭建 3 个节点集群,外加 kibana。
创建 docker-compose.yaml 文件
yaml
version: "2.2"
services:
setup:
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
user: "0"
command: >
bash -c '
if [ x${ELASTIC_PASSWORD} == x ]; then
echo "Set the ELASTIC_PASSWORD environment variable in the .env file";
exit 1;
elif [ x${KIBANA_PASSWORD} == x ]; then
echo "Set the KIBANA_PASSWORD environment variable in the .env file";
exit 1;
fi;
if [ ! -f config/certs/ca.zip ]; then
echo "Creating CA";
bin/elasticsearch-certutil ca --silent --pem -out config/certs/ca.zip;
unzip config/certs/ca.zip -d config/certs;
fi;
if [ ! -f config/certs/certs.zip ]; then
echo "Creating certs";
echo -ne \
"instances:\n"\
" - name: es01\n"\
" dns:\n"\
" - es01\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
" - name: es02\n"\
" dns:\n"\
" - es02\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
" - name: es03\n"\
" dns:\n"\
" - es03\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
> config/certs/instances.yml;
bin/elasticsearch-certutil cert --silent --pem -out config/certs/certs.zip --in config/certs/instances.yml --ca-cert config/certs/ca/ca.crt --ca-key config/certs/ca/ca.key;
unzip config/certs/certs.zip -d config/certs;
fi;
echo "Setting file permissions"
chown -R root:root config/certs;
find . -type d -exec chmod 750 \{\} \;;
find . -type f -exec chmod 640 \{\} \;;
echo "Waiting for Elasticsearch availability";
until curl -s --cacert config/certs/ca/ca.crt https://es01:9200 | grep -q "missing authentication credentials"; do sleep 30; done;
echo "Setting kibana_system password";
until curl -s -X POST --cacert config/certs/ca/ca.crt -u "elastic:${ELASTIC_PASSWORD}" -H "Content-Type: application/json" https://es01:9200/_security/user/kibana_system/_password -d "{\"password\":\"${KIBANA_PASSWORD}\"}" | grep -q "^{}"; do sleep 10; done;
echo "All done!";
'
healthcheck:
test: ["CMD-SHELL", "[ -f config/certs/es01/es01.crt ]"]
interval: 1s
timeout: 5s
retries: 120
es01:
depends_on:
setup:
condition: service_healthy
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata01:/usr/share/elasticsearch/data
ports:
- ${ES_PORT}:9200
environment:
- node.name=es01
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es02,es03
- ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es01/es01.key
- xpack.security.http.ssl.certificate=certs/es01/es01.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es01/es01.key
- xpack.security.transport.ssl.certificate=certs/es01/es01.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
es02:
depends_on:
- es01
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata02:/usr/share/elasticsearch/data
environment:
- node.name=es02
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es03
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es02/es02.key
- xpack.security.http.ssl.certificate=certs/es02/es02.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es02/es02.key
- xpack.security.transport.ssl.certificate=certs/es02/es02.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
es03:
depends_on:
- es02
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata03:/usr/share/elasticsearch/data
environment:
- node.name=es03
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es02
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es03/es03.key
- xpack.security.http.ssl.certificate=certs/es03/es03.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es03/es03.key
- xpack.security.transport.ssl.certificate=certs/es03/es03.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
kibana:
depends_on:
es01:
condition: service_healthy
es02:
condition: service_healthy
es03:
condition: service_healthy
image: docker.elastic.co/kibana/kibana:${STACK_VERSION}
volumes:
- certs:/usr/share/kibana/config/certs
- kibanadata:/usr/share/kibana/data
ports:
- ${KIBANA_PORT}:5601
environment:
- SERVERNAME=kibana
- ELASTICSEARCH_HOSTS=https://es01:9200
- ELASTICSEARCH_USERNAME=kibana_system
- ELASTICSEARCH_PASSWORD=${KIBANA_PASSWORD}
- ELASTICSEARCH_SSL_CERTIFICATEAUTHORITIES=config/certs/ca/ca.crt
mem_limit: ${MEM_LIMIT}
healthcheck:
test:
[
"CMD-SHELL",
"curl -s -I http://localhost:5601 | grep -q 'HTTP/1.1 302 Found'",
]
interval: 10s
timeout: 10s
retries: 120
volumes:
certs:
driver: local
esdata01:
driver: local
esdata02:
driver: local
esdata03:
driver: local
kibanadata:
driver: local
创建 .env 文件
在当前文件夹下创建 .env
文件,需要与 docker-compose.yaml
文件保持同一目录。 docker-compose 默认会读取当前目录下的 .env
文件
properties
# Password for the 'elastic' user (at least 6 characters)
ELASTIC_PASSWORD=123456
# Password for the 'kibana_system' user (at least 6 characters)
KIBANA_PASSWORD=123456
# Version of Elastic products
STACK_VERSION=8.14.0
# Set the cluster name
CLUSTER_NAME=docker-cluster
# Set to 'basic' or 'trial' to automatically start the 30-day trial
LICENSE=basic
#LICENSE=trial
# Port to expose Elasticsearch HTTP API to the host
ES_PORT=9200
#ES_PORT=127.0.0.1:9200
# Port to expose Kibana to the host
KIBANA_PORT=5601
#KIBANA_PORT=80
# Increase or decrease based on the available host memory (in bytes)
MEM_LIMIT=1073741824
# Project namespace (defaults to the current folder name if not set)
#COMPOSE_PROJECT_NAME=myproject
启动
docker-compose up -d
访问 kibana http://localhost:5601
账号:elastic
密码:123456
将证书复制至宿主机
因为 ES 集群开启了 SSL,如果后续有使用客户端连接集群的需求,可以将证书复制至宿主机 docker cp 784b7808bd43:/usr/share/elasticsearch/config/certs/ca/ca.crt ./