Getting the Singularity create a mirror by mirroring definition file

Mirroring configuration file

Below Redis database, for example, talk about the main difference% startscript and% runscript of.

Look below redis.def profile

Bootstrap:library
From: ubuntu:18.04

%help
	Redis 5.0.0 for Ubuntu

%post
	apt-get update
	apt-get install -y wget build-essential
	wget http://download.redis.io/releases/redis-5.0.0.tar.gz
	tar xzf redis-5.0.0.tar.gz
	cd redis-5.0.0
	make

%startscript
	/redis-5.0.0/src/redis-server

%runscript
	/redis-5.0.0/src/redis-cli

among them:

• % Startscript are commands that run when the container starts, see the following: Start Redis Server
• % Runscript means execute the command to run when the container, or directly run the command executed by the container run sub-mirror, see below: Run Redis Client
• DETAILED DESCRIPTION profile, can refer to: https://sylabs.io/guides/3.2/user-guide/definition_files.html

Mirrored

Mirrored requires root privileges, so use sudo to execute the following command.

$ sudo singularity build redis.sif redis.def

Mirroring

Start Redis Server

Start Redis Server will call% startscript to start the Redis Server.

$ singularity instance start redis.sif redis
INFO:    instance started successfully

Run Redis Client

Run Redis Client calls% runscript to run Redis Client.

# 通过 run 子命令运行 Redis Client
$ singularity run redis.sif
127.0.0.1:6379> ?

# 通过直接执行镜像来运行 Redis Client
$ ./redis.sif
127.0.0.1:6379>