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| -rw-r--r-- | Dockerfile | 30 | ||||
| -rw-r--r-- | Makefile | 38 | ||||
| -rw-r--r-- | README.md | 70 | ||||
| -rw-r--r-- | sx.sh | 25 |
4 files changed, 163 insertions, 0 deletions
diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..c80be20 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,30 @@ +FROM centos:centos7 +MAINTAINER Suren A. Chilingaryan + +ENV container centos-tools + +RUN [ -e /etc/yum.conf ] && sed -i '/tsflags=nodocs/d' /etc/yum.conf || true + +# Reinstall all packages to get man pages for them +RUN yum -y reinstall "*" && yum clean all + +# Swap out the systemd-container package and install all useful packages +RUN yum -y install \ + yum-utils glibc-utils bash-completion less file sed findutils net-tools man-db which bc tar \ + openssh-clients lftp curl samba-client \ + screen vim-enhanced nano \ + git bzr \ + mc \ + kubernetes-client \ + && yum clean all + +# Set default command +CMD ["/usr/bin/bash"] + + + +COPY sx.sh /bin/sx +RUN chmod 775 /bin/sx + +CMD [ "/bin/sx" ] + diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..34badf0 --- /dev/null +++ b/Makefile @@ -0,0 +1,38 @@ +all: build +install: push + +.PHONY: rebuild build push start stop restart bash + +build: Dockerfile + docker build --tag chsa/centos-tools:latest . + +rebuild: Dockerfile + docker build --no-cache --tag chsa/centos-tools:latest . + +push: build + docker push chsa/centos-tools:latest + +start: build + if [ `docker ps | grep chsa/centos-tools | wc -l` -eq 0 ]; then \ + if [ `docker ps -a | grep centos-tools | wc -l` -gt 0 ]; then \ + echo "Removing the stalled copy..." ;\ + docker stop centos-tools ;\ + docker rm centos-tools ;\ + fi ;\ + docker run --name centos-tools -t -d chsa/centos-tools:latest ;\ + else \ + echo "Already running..." ;\ + fi + +stop: + @if [ `docker ps | grep centos-tools | wc -l` -gt 0 ]; then \ + docker stop centos-tools ;\ + docker rm centos-tools ;\ + fi + +restart: + make stop + make start + +bash: build + docker exec -it centos-tools /bin/bash diff --git a/README.md b/README.md new file mode 100644 index 0000000..3609af5 --- /dev/null +++ b/README.md @@ -0,0 +1,70 @@ +# Docker OS Images : Centos7 + +Simple container used to have an os container running in openshift and ready to investigate using sysadmin tools. This image is based on [centos/s2i-core-centos7](https://hub.docker.com/r/centos/s2i-core-centos7) done by [sclorg](https://github.com/sclorg/s2i-base-container/tree/master/core). + +You can find information on this image and how to use it by visiting the [Dockerhub registry](https://github.com/startxfr/docker-images) + +This container contain updated core OS rpm (kernel, libs,...) as well as usefull tools like pwgen, tar, zip, psmisc, procps, coreutils, findutils, wget + +| [](https://travis-ci.org/startxfr/docker-images) | [Dockerhub Registry](https://hub.docker.com/r/startx/openshift-centos) | [Sources](https://github.com/startxfr/docker-images/OS/) | [STARTX Profile](https://github.com/startxfr) | +|-------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|----------------------------------------------------------------------|-----------------------------------------------| + +## Running from dockerhub registry + +* with `docker` you can run `docker run -it --name="centos" startx/openshift-centos` from any docker host +* with `docker-compose` you can create a docker-compose.yml file with the following content +``` +fedora: + image: startx/openshift-centos:latest + container_name: "os-ocp-centos7" + environment: + CONTAINER_TYPE: "os" + CONTAINER_SERVICE: "fedora" + CONTAINER_INSTANCE: "os-ocp-centos7" +``` + +## Using this image in your own container + +You can use this Dockerfile template to start a new personalized container based on this container + ``` +FROM startx/openshift-centos:latest +#... your container specifications +CMD ["/bin/sx"] +``` + +## Environment variable + +| Variable | Type | Mandatory | Description | +|---------------------------|----------|-----------|--------------------------------------------------------------------------| +| CONTAINER_INSTANCE | `string` | `yes` | Container name. Should be uning to get fine grained log and application reporting +| CONTAINER_TYPE | `string` | `no` | Container family (os, service, application. could be enhanced +| CONTAINER_SERVICE | `string` | `no` | Define the type of service or application provided +| HOSTNAME | `auto` | `auto` | Container unique id automatically assigned by docker daemon at startup + + +## For advanced users + +You you want to use this container and code to build and create locally this container. You can follow theses instructions to setup and working environment. + +This section will help you if you want to : +* Get latest version of this container OS +* Enhance container content by adding instruction in Dockefile before build step + +You must have a working environment with the source code of this repository. Read and follow [how to setup your working environment](https://github.com/startxfr/docker-images#setup-your-working-environment-mandatory) to get a working directory. The following instructions assume you are at the top level of your working directory. + +### Build & run a container using `docker` + +1. Jump into the container directory with `cd OS` +2. Build the container using `docker build -t fedora .` +3. Run this container + 1. Interactively with `docker run -it fedora`. If you add a second parameter (like `/bin/bash`) to will run this command instead of the default entrypoint. Usefull to interact with this container (ex: `/bin/bash`, `/bin/ps -a`, `/bin/df -h`,...) + 2. As a daemon with `docker run -d fedora` + + +### Build & run a container using `docker-compose` + +1. Jump into the container directory with `cd OS` +2. Run this container + 1. Interactively with `docker-compose up` Startup logs appears and escaping this command stop the container + 2. As a daemon with `docker-compose up -d`. Container startup logs can be read using `docker-compose logs` + @@ -0,0 +1,25 @@ +#!/bin/bash +export TERM=xterm +pid=0 + +function display_container_header { + echo "+=====================================================" + echo "| Container : $HOSTNAME" + echo "| OS : $(</etc/redhat-release)" + echo "| kubernetes : $KUBERNETES_SERVICE_HOST" + echo "| user : $(whoami)" + echo "+=====================================================" +} + +function start_service { + echo "+=====================================================" + echo "| Container $HOSTNAME is now RUNNING" + echo "+=====================================================" + while true + do + echo "live... (next try in 10sec)" & sleep 10 + done +} + +display_container_header +start_service
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