Тома Docker в AWS - запись в EBS, EFS, S3

Получил плагины EFS, EBS, S3 с работающей политикой AWS

Полная информация об ответе на https://github.com/codedellemc/rexray/issues/820#issuecomment-323624765.

• I used RexRay Docker Volume plugin for EBS, EFS, and S3 support
  • The volume allows you to automatically load one of those as a file-system mount inside the container without using ANY AWS API. That is, transparently to the container!!!

Вот пример

docker service create --replicas 10 
    --name echo-to-efs 
    --mount type=volume,source=echo_data,target=/test,volume-driver=rexray/efs 
    alpine /bin/sh -c 'echo "writing from $HOSTNAME" >> \
                 /test/echo.log ; cat /test/echo.log ; sleep 30'
iy4rzd4imq776abjlqdqf8l10

EFS MOUNTS

EBS MOUNTS

Установить плагин Volume

• Процесс установки описан на странице https://rexray.readthedocs.io/en/stable/user-guide/docker-plugins/#amazon.

Повторите для каждого из них, используя их аргументы командной строки docker ...

[root@ip-10-zz-yy-xx ec2-user]# sudo docker plugin install --grant-all-permissions rexray/s3fs latest: Pulling from rexray/s3fs 5a6437c91cc6: Download complete Digest: sha256:6ba105974d5298ff49def3c83e5547d41e573e0a3cb8604f1dcb1a0f90ee070b Status: Downloaded newer image for rexray/s3fs:latest Installed plugin rexray/s3fs

Плагин Docker ls

• После настройки UserData для установки 3 плагинов все работает правильно!

[ec2-user@ip-10-82-48-59 ~]$ docker plugin ls ID NAME DESCRIPTION ENABLED 0eb15d4a9594 rexray/s3fs:latest REX-Ray FUSE Driver for Amazon Simple Stor... true 6bae636cb377 rexray/ebs:latest REX-Ray for Amazon EBS true 9e231d9177c2 rexray/efs:latest REX-Ray for Amazon EFS true

Контейнеры Docker автоматически создают / монтируют тома

На практике я усвоил следующее:

• EFS = одновременные записи (сценарии x реплик)
• EBS = одиночные записи (1 сценарий репликации)

Итак, пример ниже показывает следующее:

• Создайте 10 контейнеров Docker, одновременно записывающих в один и тот же файл.

Last login: Mon Aug 21 00:34:46 2017 from 10.82.49.230 [ec2-user@ip-10-zz-yy-xx ~]$ docker service create --replicas 10 --name echo-to-efs
--mount type=volume,source=echo_data,target=/test,volume-driver=rexray/efs alpine /bin/sh -c 'echo "writing from $HOSTNAME" >> /test/echo.log ; cat /test/echo.log ; sleep 30' iy4rzd4imq776abjlqdqf8l10

• The docker ps shows some of them writing and failures
  • If someone can explain why some failures in the case please let me know...
  • У меня REXRAY_PREEMPT=true так что не уверен, что это не связано

[ec2-user@ip-10-82-48-59 ~]$ docker service ps echo-to-efs ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS 8c8lxqcoc3n5 echo-to-efs.1 alpine:latest ip-10-82-48-59.vpc.internal Running Running 8 seconds ago 23meciw5cvad echo-to-efs.2 alpine:latest ip-10-82-49-52.vpc.internal Running Running 2 seconds ago si7lg30kb13b \_ echo-to-efs.2 alpine:latest ip-10-82-48-93.vpc.internal Shutdown Failed about a minute ago "starting container failed: er…" rmj163xu97ai echo-to-efs.3 alpine:latest ip-10-82-48-96.vpc.internal Running Running 7 seconds ago 5jtao2yu5udt echo-to-efs.4 alpine:latest ip-10-82-48-95.vpc.internal Running Running 8 seconds ago wot9hd5nbjsz echo-to-efs.5 alpine:latest ip-10-82-49-71.vpc.internal Running Running 7 seconds ago hcbbgfiuga9c echo-to-efs.6 alpine:latest ip-10-82-48-140.vpc.internal Running Starting 49 seconds ago wrnnrsm16usr \_ echo-to-efs.6 alpine:latest ip-10-82-48-25.vpc.internal Shutdown Rejected 58 seconds ago "create echo_data: VolumeDrive…" w3v4x0pf9uri \_ echo-to-efs.6 alpine:latest ip-10-82-48-37.vpc.internal Shutdown Rejected about a minute ago "create echo_data: VolumeDrive…" okgda40hb4hy \_ echo-to-efs.6 alpine:latest ip-10-82-49-107.vpc.internal Shutdown Rejected about a minute ago "create echo_data: VolumeDrive…" bzoafno0gb4d echo-to-efs.7 alpine:latest ip-10-82-48-74.vpc.internal Running Running 7 seconds ago rk7uebz4cdql echo-to-efs.8 alpine:latest ip-10-82-49-111.vpc.internal Running Running 6 seconds ago hy1rfid4zitl echo-to-efs.9 alpine:latest ip-10-82-48-162.vpc.internal Running Running 7 seconds ago k5lmmmu44yh3 echo-to-efs.10 alpine:latest ip-10-82-48-187.vpc.internal Running Running 8 seconds ago

• Теперь мы можем проверить, записывается ли файл ...

[ec2-user@ip-10-82-48-59 ~]$ docker service logs echo-to-efs [email protected] | writing from 3da21bc313f7 [email protected] | writing from 3da21bc313f7 [email protected] | writing from 334b26ce3747 [email protected] | writing from 3da21bc313f7 [email protected] | writing from 334b26ce3747 [email protected] | writing from 334b26ce3747 [email protected] | writing from fcefd6eb5035 [email protected] | writing from 84ffd56fdcfa [email protected] | writing from b7ecbd01debe [email protected] | writing from e5ef2a2821a2 [email protected] | writing from 5179f81f04f9 [email protected] | writing from 5e859dce0c2f [email protected] | writing from fcefd6eb5035 [email protected] | writing from fcefd6eb5035 [email protected] | writing from 84ffd56fdcfa [email protected] | writing from b7ecbd01debe [email protected] | writing from 84ffd56fdcfa [email protected] | writing from b7ecbd01debe [email protected] | writing from e5ef2a2821a2 [email protected] | writing from 3da21bc313f7 [email protected] | writing from 5179f81f04f9 [email protected] | writing from e5ef2a2821a2 [email protected] | writing from 5e859dce0c2f ... ...

• Now see the current value in the file.
  • The command here will mount the volume and at the same and then read the file from EFS mount.
  • Действительно, требуется много времени, чтобы контейнер подготовил монтирование ... Примерно 2 минуты ... Не уверен, что это ожидается.

[ec2-user@ip-10-82-48-59 ~]$ docker run -ti --volume-driver=rexray/efs -v echo_data:/test alpine cat /test/echo.log Unable to find image 'alpine:latest' locally latest: Pulling from library/alpine Digest: sha256:1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe Status: Downloaded newer image for alpine:latest writing from 3da21bc313f7 writing from 334b26ce3747 writing from fcefd6eb5035 writing from 84ffd56fdcfa writing from b7ecbd01debe writing from e5ef2a2821a2 writing from 5179f81f04f9 writing from 5e859dce0c2f writing from af94a5a29b4a writing from a3f860caaf03 writing from b7b3d30d2f8e writing from cf65a52760c0 writing from a551b529e599 writing from 0533784ce9e5 writing from d78f781baa4d writing from 06b84229ec32 writing from 4e3974cfb8a9 writing from 007cd66062e7 writing from 665f76589ae2 writing from 68b04985559a writing from 9a2e19e110fb writing from 1ed7903abf86 writing from 763c7eea52fb writing from 529c7fff9c71 writing from 7172d5fb56d9 writing from c33294ce8d9d writing from b95a5b5f1bc1 writing from ff269d8a78ba writing from b1299af12f30 writing from 4f970a6e234d writing from a4a1f331b3c9 writing from bb3915d9d242 writing from 0fbafba12a0c writing from 017f70a769da writing from 8d657b23571f writing from 570e2fa76e16 writing from 45a92f3d19b4 writing from 3b02cb3675e4 writing from e2d49358df6f

Состояние томов Docker

• Docker volumes now maps all the Mounts with the Plugins
  • This is a major win for me!

[ec2-user@ip-10-82-48-59 ~]$ docker volume ls DRIVER VOLUME NAME rexray/s3fs:latest 7820-3357-5600-us-west-2 rexray/s3fs:latest cf-templates-8hmsxuf2muaa-us-west-2 rexray/efs:latest echo_data rexray/s3fs:latest marcello-12345 rexray/s3fs:latest marcello-testing-bucket-1 rexray/s3fs:latest marcello-testing-bucket-2 rexray/s3fs:latest new-config-publisher rexray/s3fs:latest publisher.intuit-caas rexray/s3fs:latest publisher.intuit-caas-new-update rexray/ebs:latest quay-registry-configs rexray/ebs:latest quay-registry-images-datastore rexray/ebs:latest quay-registry-mysql-datastore rexray/ebs:latest registry_configs rexray/ebs:latest registry_mysql-data rexray/s3fs:latest swarmbucket-vpc-155e5072