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Monthly Archives: March 2018
Oracle Unbreakable Enterprise Kernel Release 4
Oracle Unbreakable Enterprise Kernel Release 4 (kernel-uek-4.1.12-112.16.4.x) is now available for Oracle Linux 6 and Oracle Linux 7
Alpine Linux a security-oriented, lightweight Linux distro for vms and containers
Alpine Linux is a security-oriented, lightweight Linux distribution based on musl libc and busybox.
vpsfree.cz 8core 4gb vps
https://vpsfree.org/parameters/
| CPU: | 8 cores |
| RAM: | 4096 MB |
| HDD: | 120 GB |
| IPv4: | 1× |
| IPv6: | 32× |
| Connectivity: | 300 Mbps |
docker stats and docker top
to use docker stats and docker top get container ids from docker container list or docker ps
$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 375fd90c86a8 laradock_nginx "nginx" About an hour ago Up About an hour 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp laradock_nginx_1 8433057223b9 laradock_php-fpm "docker-php-entrypoi…" About an hour ago Up About an hour 9000/tcp laradock_php-fpm_1 1f708b403022 laradock_workspace "/sbin/my_init" About an hour ago Up About an hour 0.0.0.0:2222->22/tcp laradock_workspace_1
docker stats
$ docker stats 375fd90c86a8
docker top
$ docker top 375fd90c86a8
docker container removal
docker container removal
$ docker container list --all CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 7892a81691c6 docker/ucp "/bin/ucp-tool" 35 minutes ago Exited (0) 35 minutes ago cranky_shannon ff848049bc55 redmine "/docker-entrypoint.…" About an hour ago Exited (0) About an hour ago inspiring_babbage fe67ab61abda redmine "/docker-entrypoint.…" About an hour ago Exited (0) About an hour ago cocky_bartik 65a554844970 bitnami/redmine "/app-entrypoint.sh …" About an hour ago Exited (1) About an hour ago upbeat_pare
docker rm container
$ docker rm 4c5784e79dd9
docker image removal
docker image deletion and removal
get a list of images
$ docker images --all REPOSITORY TAG IMAGE ID CREATED SIZE laradock_nginx latest 687eb3dccec0 23 hours ago 24.4MB laradock_php-fpm latest 9011ae1a47a5 23 hours ago 414MB laradock_redis latest a085dd214956 24 hours ago 107MB laradock_workspace latest 2ea822e3b905 24 hours ago 725MB osde8info/get-started part-2 05bbc25a892f 27 hours ago 148MB node alpine 785e257485e7 4 days ago 68.4MB bitnami/redmine latest e547bec0c9bb 7 days ago 708MB postgres alpine f4f4231d6f0b 10 days ago 39.5MB
delete a specific image
$ docker image rm f4f4231d6f0b
docker images are kept in /var/lib/docker
docker images are kept in /var/lib/docker
# du -s /var/lib/docker/* 20 /var/lib/docker/builder 220 /var/lib/docker/containerd 884 /var/lib/docker/containers 30028 /var/lib/docker/image 84 /var/lib/docker/network 5876620 /var/lib/docker/overlay2 20 /var/lib/docker/plugins 4 /var/lib/docker/runtimes 4 /var/lib/docker/swarm 4 /var/lib/docker/tmp 4 /var/lib/docker/trust 188 /var/lib/docker/volumes
you can save a lot of space by deleting any unused images and containers
# du -s /var/lib/docker/* 20 /var/lib/docker/builder 220 /var/lib/docker/containerd 4 /var/lib/docker/containers 2888 /var/lib/docker/image 84 /var/lib/docker/network 163380 /var/lib/docker/overlay2 20 /var/lib/docker/plugins 4 /var/lib/docker/runtimes 4 /var/lib/docker/swarm 4 /var/lib/docker/tmp 4 /var/lib/docker/trust 188 /var/lib/docker/volumes
docker dockerfile
a docker dockerfile is used to create docker images and run docker containers
dockerfiles can contain the following commands
- from
- maintainer
- run
- add
- expose
- cmd
- label
- entrypoint
- user
- workdir
- onbuild
docker compose docker-compose.yaml
docker compose runs all the containers (and dependancies) defined in your docker-compose.yaml file
for example
$ docker-compose up -d nginx
actually runs the nginx, phpfpm and wordspaces because the docker-compose.yaml contains depends on
### NGINX Server Container ##################################
nginx:
build:
context: ./nginx
args:
- PHP_UPSTREAM_CONTAINER=${NGINX_PHP_UPSTREAM_CONTAINER}
- PHP_UPSTREAM_PORT=${NGINX_PHP_UPSTREAM_PORT}
volumes_from:
- applications
volumes:
- ${NGINX_HOST_LOG_PATH}:/var/log/nginx
- ${NGINX_SITES_PATH}:/etc/nginx/sites-available
ports:
- "${NGINX_HOST_HTTP_PORT}:80"
- "${NGINX_HOST_HTTPS_PORT}:443"
depends_on:
- php-fpm
networks:
- frontend
- backend
### PHP-FPM Container #######################################
php-fpm:
build:
context: ./php-fpm
args:
- INSTALL_XDEBUG=${PHP_FPM_INSTALL_XDEBUG}
expose:
- "9000"
depends_on:
- workspace
extra_hosts:
- "dockerhost:${DOCKER_HOST_IP}"
environment:
- PHP_IDE_CONFIG=${PHP_IDE_CONFIG}
networks:
- backend
### Workspace Utilities Container ###########################
workspace:
build:
context: ./workspace
args:
- INSTALL_XDEBUG=${WORKSPACE_INSTALL_XDEBUG}
- INSTALL_BLACKFIRE=${INSTALL_BLACKFIRE}
- INSTALL_SOAP=${WORKSPACE_INSTALL_SOAP}
- INSTALL_LDAP=${WORKSPACE_INSTALL_LDAP}
- INSTALL_IMAP=${WORKSPACE_INSTALL_IMAP}
