UNIX DevOps Advice

root@ip-172-31-23-164:~# curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
OK

root@ip-172-31-23-164:~# add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

root@ip-172-31-23-164:~# apt-get update
Hit:1 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial InRelease
Get:2 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Get:3 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Get:4 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Hit:5 http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease
Get:6 https://download.docker.com/linux/ubuntu xenial InRelease [29.5 kB]
Hit:7 https://deb.nodesource.com/node_6.x xenial InRelease
Get:8 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/main Sources [260 kB]
Get:9 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/universe Sources [165 kB]
Get:10 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages [583 kB]
Get:11 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages [506 kB]
Get:12 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [197 kB]
Get:13 http://security.ubuntu.com/ubuntu xenial-security/main Sources [80.6 kB]
Get:14 http://security.ubuntu.com/ubuntu xenial-security/universe Sources [36.6 kB]
Get:15 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages [311 kB]
Get:16 http://security.ubuntu.com/ubuntu xenial-security/main Translation-en [131 kB]
Get:17 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages [147 kB]
Get:18 http://security.ubuntu.com/ubuntu xenial-security/universe Translation-en [76.2 kB]
Get:19 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages [1,966 B]
Fetched 2,831 kB in 1s (2,714 kB/s)
Reading package lists... Done

root@ip-172-31-23-164:~# apt-cache policy docker-ce
docker-ce:
Installed: (none)
Candidate: 17.06.0~ce-0~ubuntu
Version table:
17.06.0~ce-0~ubuntu 500
500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
17.03.2~ce-0~ubuntu-xenial 500
500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
17.03.1~ce-0~ubuntu-xenial 500
500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
17.03.0~ce-0~ubuntu-xenial 500
500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages

root@ip-172-31-23-164:~# apt-get install -y docker-ce
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
gyp libjs-inherits libjs-node-uuid libjs-underscore libssl-dev libssl-doc libuv1 libuv1-dev node-abbrev node-ansi
node-ansi-color-table node-archy node-async node-block-stream node-combined-stream node-cookie-jar node-delayed-stream
node-forever-agent node-form-data node-fstream node-fstream-ignore node-github-url-from-git node-glob node-graceful-fs node-gyp
node-inherits node-ini node-json-stringify-safe node-lockfile node-lru-cache node-mime node-minimatch node-mkdirp node-mute-stream
node-node-uuid node-nopt node-normalize-package-data node-npmlog node-once node-osenv node-qs node-read node-read-package-json
node-request node-retry node-rimraf node-semver node-sha node-sigmund node-slide node-tar node-tunnel-agent node-underscore node-which
python-pkg-resources zlib1g-dev
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
aufs-tools cgroupfs-mount libltdl7
Suggested packages:
mountall
The following NEW packages will be installed:
aufs-tools cgroupfs-mount docker-ce libltdl7
0 upgraded, 4 newly installed, 0 to remove and 25 not upgraded.
Need to get 20.6 MB of archives.
After this operation, 96.6 MB of additional disk space will be used.
Get:1 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial/universe amd64 aufs-tools amd64 1:3.2+20130722-1.1ubuntu1 [92.9 kB]
Get:2 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial/universe amd64 cgroupfs-mount all 1.2 [4,970 B]
Get:3 http://us-east-1.ec2.archive.ubuntu.com/ubuntu xenial/main amd64 libltdl7 amd64 2.4.6-0.1 [38.3 kB]
Get:4 https://download.docker.com/linux/ubuntu xenial/stable amd64 docker-ce amd64 17.06.0~ce-0~ubuntu [20.5 MB]
Fetched 20.6 MB in 1s (19.0 MB/s)
Selecting previously unselected package aufs-tools.
(Reading database ... 94921 files and directories currently installed.)
Preparing to unpack .../aufs-tools_1%3a3.2+20130722-1.1ubuntu1_amd64.deb ...
Unpacking aufs-tools (1:3.2+20130722-1.1ubuntu1) ...
Selecting previously unselected package cgroupfs-mount.
Preparing to unpack .../cgroupfs-mount_1.2_all.deb ...
Unpacking cgroupfs-mount (1.2) ...
Selecting previously unselected package libltdl7:amd64.
Preparing to unpack .../libltdl7_2.4.6-0.1_amd64.deb ...
Unpacking libltdl7:amd64 (2.4.6-0.1) ...
Selecting previously unselected package docker-ce.
Preparing to unpack .../docker-ce_17.06.0~ce-0~ubuntu_amd64.deb ...
Unpacking docker-ce (17.06.0~ce-0~ubuntu) ...
Processing triggers for libc-bin (2.23-0ubuntu9) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for systemd (229-4ubuntu17) ...
Setting up aufs-tools (1:3.2+20130722-1.1ubuntu1) ...
Setting up cgroupfs-mount (1.2) ...
Setting up libltdl7:amd64 (2.4.6-0.1) ...
Setting up docker-ce (17.06.0~ce-0~ubuntu) ...
Processing triggers for libc-bin (2.23-0ubuntu9) ...
Processing triggers for systemd (229-4ubuntu17) ...
Processing triggers for ureadahead (0.100.0-19) ...
root@ip-172-31-23-164:~# systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2017-07-25 00:30:07 UTC; 12s ago
Docs: https://docs.docker.com
Main PID: 4958 (dockerd)
CGroup: /system.slice/docker.service
├─4958 /usr/bin/dockerd -H fd://
└─4963 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeout 2m

Jul 25 00:30:06 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:06.864508090Z" level=warning msg="Your kernel does not support swap
Jul 25 00:30:06 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:06.864733249Z" level=warning msg="Your kernel does not support cgro
Jul 25 00:30:06 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:06.864880811Z" level=warning msg="Your kernel does not support cgro
Jul 25 00:30:06 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:06.865311745Z" level=info msg="Loading containers: start."
Jul 25 00:30:07 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:07.007013010Z" level=info msg="Default bridge (docker0) is assigned
Jul 25 00:30:07 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:07.069084500Z" level=info msg="Loading containers: done."
Jul 25 00:30:07 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:07.081451315Z" level=info msg="Daemon has completed initialization"
Jul 25 00:30:07 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:07.081680500Z" level=info msg="Docker daemon" commit=02c1d87 graphd
Jul 25 00:30:07 ip-172-31-23-164 systemd[1]: Started Docker Application Container Engine.
Jul 25 00:30:07 ip-172-31-23-164 dockerd[4958]: time="2017-07-25T00:30:07.091127040Z" level=info msg="API listen on /var/run/docker.sock"
lines 1-19/19 (END)

provider "scaleway" {
  region = "ams1"
}

data "scaleway_bootscript" "latest" {
  architecture = "x86_64"
  name_filter  = "latest"
}

data "scaleway_image" "alpine" {
  architecture = "x86_64"
  name         = "Alpine Linux"
}

resource "scaleway_ip" "example_ip" {
  server = "${scaleway_server.example.id}"
}

resource "scaleway_server" "example" {
  name           = "example.changeme.net"
  image          = "${data.scaleway_image.alpine.id}"
  type           = "VC1S"
  bootscript     = "${data.scaleway_bootscript.latest.id}"
  security_group = "${scaleway_security_group.example_default.id}"
}

resource "scaleway_security_group" "example_default" {
  name        = "example_default"
  description = "Allow SSH traffic"
}

resource "scaleway_security_group_rule" "ssh_accept" {
  security_group = "${scaleway_security_group.example_default.id}"

  action    = "accept"
  direction = "inbound"
  ip_range  = "0.0.0.0/0"
  protocol  = "TCP"
  port      = 22
}

Once done, exit the file and run the following:

$ terraform fmt

This command will let you know of any problems with your file.

If it detects incorrect syntax, it will attempt to tell you of the problem, such as in the below example:

$ terraform fmt
Error running fmt: In main.tf: At 3:2: expected: IDENT | STRING | ASSIGN | LBRACE got: RBRACE

If it detects formatting that strays from Terraform’s ideal, it will fix it, and print out the name of the file it corrected, as seen below:

$ terraform fmt
main.tf

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