Wednesday, August 9, 2017

How to Install docker-compose CentOS7

 Install Docker-compose on CentOs7 Linux.

yum install -y epel-release

yum install -y python-pip

pip install --upgrade pip

pip install docker-compose

pip install backports.ssl_match_hostname --upgrade

Also need to run :
pip install six --upgrade


Checking :
[root@slaveserver ~]# docker-compose -v
docker-compose version 1.15.0, build e12f3b9
[root@slaveserver ~]#

Run docker-compose help for more command-line options.

[root@slaveserver ~]#  docker-compose help
Define and run multi-container applications with Docker.

Usage:
  docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
  docker-compose -h|--help

Options:
  -f, --file FILE             Specify an alternate compose file (default: docker-compose.yml)
  -p, --project-name NAME     Specify an alternate project name (default: directory name)
  --verbose                   Show more output
  -v, --version               Print version and exit
  -H, --host HOST             Daemon socket to connect to

  --tls                       Use TLS; implied by --tlsverify
  --tlscacert CA_PATH         Trust certs signed only by this CA
  --tlscert CLIENT_CERT_PATH  Path to TLS certificate file
  --tlskey TLS_KEY_PATH       Path to TLS key file
  --tlsverify                 Use TLS and verify the remote
  --skip-hostname-check       Don't check the daemon's hostname against the name specified
                              in the client certificate (for example if your docker host
                              is an IP address)
  --project-directory PATH    Specify an alternate working directory
                              (default: the path of the Compose file)

Commands:
  build              Build or rebuild services
  bundle             Generate a Docker bundle from the Compose file
  config             Validate and view the Compose file
  create             Create services
  down               Stop and remove containers, networks, images, and volumes
  events             Receive real time events from containers
  exec               Execute a command in a running container
  help               Get help on a command
  images             List images
  kill               Kill containers
  logs               View output from containers
  pause              Pause services
  port               Print the public port for a port binding
  ps                 List containers
  pull               Pull service images
  push               Push service images
  restart            Restart services
  rm                 Remove stopped containers
  run                Run a one-off command
  scale              Set number of containers for a service
  start              Start services
  stop               Stop services
  top                Display the running processes
  unpause            Unpause services
  up                 Create and start containers
  version            Show the Docker-Compose version information
[root@slaveserver ~]#


Friday, August 4, 2017

How to restore chmod exicutable permission

If a careless sysadmin executes this command  chmod 444 /bin/chmod - what do you do to fix this?

Solution !


This command  will fix it if you are root user, Most unix and linux based OS's have perl installed and available by default.

#perl -e 'chmod 0755, "/bin/chmod";' 
 

How to Install docker-compose CentOS7

 Install Docker-compose on CentOs7 Linux. yum install -y epel-release yum install -y python-pip pip install --upgrade pip pip install ...