使用带有挂载到符号链接的 Docker-Volume,但它也将数据持久保存到主机。为什么?
Using a Docker-Volume with a Mount to a Symlink, But It's Persisting Data to the Host Too. Why?
我创建了一个 Docker 卷:
sudo docker volume create --driver=local --name=es-data1 --opt type=none --opt o=bind --opt device=/usr/local/contoso/data1/elasticsearch/data1
/usr/local/contoso/data1/elasticsearch/data1
是符号链接。
我在 docker-compose.yml
文件中实例化了三个 Elasticsearch Docker 容器:
version: '3.7'
services:
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:7.6.0
logging:
driver: none
container_name: elasticsearch1
environment:
- node.name=elasticsearch1
- cluster.name=docker-cluster
- cluster.initial_master_nodes=elasticsearch1
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms1G -Xmx1G"
- http.cors.enabled=true
- http.cors.allow-origin=*
- network.host=_eth0_
ulimits:
nproc: 65535
memlock:
soft: -1
hard: -1
cap_add:
- ALL
# privileged: true
deploy:
replicas: 1
update_config:
parallelism: 1
delay: 10s
resources:
limits:
cpus: '1'
memory: 1G
reservations:
cpus: '1'
memory: 1G
restart_policy:
condition: unless-stopped
delay: 5s
max_attempts: 3
window: 10s
volumes:
- es-logs:/var/log
- es-data1:/usr/share/elasticsearch/data
networks:
- elastic
- ingress
ports:
- 9200:9200
- 9300:9300
healthcheck:
test: wget -q -O - http://127.0.0.1:9200/_cat/health
elasticsearch2:
image: docker.elastic.co/elasticsearch/elasticsearch:7.6.0
logging:
driver: none
container_name: elasticsearch2
environment:
- node.name=elasticsearch2
- cluster.name=docker-cluster
- cluster.initial_master_nodes=elasticsearch1
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms1G -Xmx1G"
- "discovery.zen.ping.unicast.hosts=elasticsearch1"
- http.cors.enabled=true
- http.cors.allow-origin=*
- network.host=_eth0_
ulimits:
nproc: 65535
memlock:
soft: -1
hard: -1
cap_add:
- ALL
# privileged: true
deploy:
replicas: 1
update_config:
parallelism: 1
delay: 10s
resources:
limits:
cpus: '1'
memory: 1G
reservations:
cpus: '1'
memory: 1G
restart_policy:
condition: unless-stopped
delay: 5s
max_attempts: 3
window: 10s
volumes:
- es-logs:/var/log
- es-data2:/usr/share/elasticsearch/data
networks:
- elastic
- ingress
ports:
- 9201:9200
healthcheck:
test: wget -q -O - http://127.0.0.1:9200/_cat/health
elasticsearch3:
image: docker.elastic.co/elasticsearch/elasticsearch:7.6.0
logging:
driver: none
container_name: elasticsearch3
environment:
- node.name=elasticsearch3
- cluster.name=docker-cluster
- cluster.initial_master_nodes=elasticsearch1
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms1G -Xmx1G"
- "discovery.zen.ping.unicast.hosts=elasticsearch1"
- http.cors.enabled=true
- http.cors.allow-origin=*
- network.host=_eth0_
ulimits:
nproc: 65535
memlock:
soft: -1
hard: -1
cap_add:
- ALL
# privileged: true
deploy:
replicas: 1
update_config:
parallelism: 1
delay: 10s
resources:
limits:
cpus: '1'
memory: 1G
reservations:
cpus: '1'
memory: 1G
restart_policy:
condition: unless-stopped
delay: 5s
max_attempts: 3
window: 10s
volumes:
- es-logs:/var/log
- es-data3:/usr/share/elasticsearch/data
networks:
- elastic
- ingress
ports:
- 9202:9200
healthcheck:
test: wget -q -O - http://127.0.0.1:9200/_cat/health
volumes:
es-data1:
driver: local
external: true
es-data2:
driver: local
external: true
es-data3:
driver: local
external: true
es-logs:
driver: local
external: true
networks:
elastic:
external: true
ingress:
external: true
我的问题:
- Elasticsearch 容器正在将索引数据保存到 主机文件系统和挂载的符号链接。
我的问题:
- 如何修改我的配置,以便 Elasticsearch 容器仅将索引数据持久保存到已安装的符号链接?
似乎 local
卷驱动程序的默认行为是将文件额外存储在主机上。您可以更改 docker-compose.yml
中的音量设置以防止 docker 在主机文件系统上持久(复制)文件(请参阅 nocopy: true
),如下所示:
version: '3.7'
services:
elasticsearch:
....
volumes:
- type: volume
source: es-data1
target: /usr/share/elasticsearch/data
volume:
nocopy: true
....
volumes:
es-data1:
driver: local
external: true
您可能还想在此处查看此问题:. So, there seem to be some docker volume plugins that are made specifically for the portability reasons; such as flocker or hedvig。但是我没有为此目的使用插件,所以我还不能真正推荐一个。
我创建了一个 Docker 卷:
sudo docker volume create --driver=local --name=es-data1 --opt type=none --opt o=bind --opt device=/usr/local/contoso/data1/elasticsearch/data1
/usr/local/contoso/data1/elasticsearch/data1
是符号链接。
我在 docker-compose.yml
文件中实例化了三个 Elasticsearch Docker 容器:
version: '3.7'
services:
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:7.6.0
logging:
driver: none
container_name: elasticsearch1
environment:
- node.name=elasticsearch1
- cluster.name=docker-cluster
- cluster.initial_master_nodes=elasticsearch1
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms1G -Xmx1G"
- http.cors.enabled=true
- http.cors.allow-origin=*
- network.host=_eth0_
ulimits:
nproc: 65535
memlock:
soft: -1
hard: -1
cap_add:
- ALL
# privileged: true
deploy:
replicas: 1
update_config:
parallelism: 1
delay: 10s
resources:
limits:
cpus: '1'
memory: 1G
reservations:
cpus: '1'
memory: 1G
restart_policy:
condition: unless-stopped
delay: 5s
max_attempts: 3
window: 10s
volumes:
- es-logs:/var/log
- es-data1:/usr/share/elasticsearch/data
networks:
- elastic
- ingress
ports:
- 9200:9200
- 9300:9300
healthcheck:
test: wget -q -O - http://127.0.0.1:9200/_cat/health
elasticsearch2:
image: docker.elastic.co/elasticsearch/elasticsearch:7.6.0
logging:
driver: none
container_name: elasticsearch2
environment:
- node.name=elasticsearch2
- cluster.name=docker-cluster
- cluster.initial_master_nodes=elasticsearch1
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms1G -Xmx1G"
- "discovery.zen.ping.unicast.hosts=elasticsearch1"
- http.cors.enabled=true
- http.cors.allow-origin=*
- network.host=_eth0_
ulimits:
nproc: 65535
memlock:
soft: -1
hard: -1
cap_add:
- ALL
# privileged: true
deploy:
replicas: 1
update_config:
parallelism: 1
delay: 10s
resources:
limits:
cpus: '1'
memory: 1G
reservations:
cpus: '1'
memory: 1G
restart_policy:
condition: unless-stopped
delay: 5s
max_attempts: 3
window: 10s
volumes:
- es-logs:/var/log
- es-data2:/usr/share/elasticsearch/data
networks:
- elastic
- ingress
ports:
- 9201:9200
healthcheck:
test: wget -q -O - http://127.0.0.1:9200/_cat/health
elasticsearch3:
image: docker.elastic.co/elasticsearch/elasticsearch:7.6.0
logging:
driver: none
container_name: elasticsearch3
environment:
- node.name=elasticsearch3
- cluster.name=docker-cluster
- cluster.initial_master_nodes=elasticsearch1
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms1G -Xmx1G"
- "discovery.zen.ping.unicast.hosts=elasticsearch1"
- http.cors.enabled=true
- http.cors.allow-origin=*
- network.host=_eth0_
ulimits:
nproc: 65535
memlock:
soft: -1
hard: -1
cap_add:
- ALL
# privileged: true
deploy:
replicas: 1
update_config:
parallelism: 1
delay: 10s
resources:
limits:
cpus: '1'
memory: 1G
reservations:
cpus: '1'
memory: 1G
restart_policy:
condition: unless-stopped
delay: 5s
max_attempts: 3
window: 10s
volumes:
- es-logs:/var/log
- es-data3:/usr/share/elasticsearch/data
networks:
- elastic
- ingress
ports:
- 9202:9200
healthcheck:
test: wget -q -O - http://127.0.0.1:9200/_cat/health
volumes:
es-data1:
driver: local
external: true
es-data2:
driver: local
external: true
es-data3:
driver: local
external: true
es-logs:
driver: local
external: true
networks:
elastic:
external: true
ingress:
external: true
我的问题:
- Elasticsearch 容器正在将索引数据保存到 主机文件系统和挂载的符号链接。
我的问题:
- 如何修改我的配置,以便 Elasticsearch 容器仅将索引数据持久保存到已安装的符号链接?
似乎 local
卷驱动程序的默认行为是将文件额外存储在主机上。您可以更改 docker-compose.yml
中的音量设置以防止 docker 在主机文件系统上持久(复制)文件(请参阅 nocopy: true
),如下所示:
version: '3.7'
services:
elasticsearch:
....
volumes:
- type: volume
source: es-data1
target: /usr/share/elasticsearch/data
volume:
nocopy: true
....
volumes:
es-data1:
driver: local
external: true
您可能还想在此处查看此问题: