My first attempt using ansible to manage, install and setup ubuntu 14.04 on a rented Root Server from http://hetzner.de using their API. There are other playbooks stored here to install and provision various applications, like qemu, dnsmasq etc.
3 very simple shell scripts show the use the API via curl and how to create a password hash. They read the web API username/password from secrets.yml:
- showmykeys.sh - shows the stored public ssh key on https://robot.your-server.de
- listmyservers.sh - lists all rented root servers
- create-password-hash.sh - asks for a clear text password and displays the hash that can be used in secrets.yml as password (for a user account to be created in role provision-ubuntu).
- hetzner-boot-rescue: Reboot server into recovery mode
- hetzner-install-ubuntu: Run installimage
- provision-ubuntu: Setup iptables, install some stuff
The playbook initialize-server.yml calls all 3 roles in sequence and requires 2 files to be created first, using the templates with suffix .sample. Copy them and fill them with relevant data:
cp hosts.sample hosts
cp secrets.yml.sample secrets.yml
$ ansible-playbook --list-tasks initialize-server.yml
playbook: initialize-server.yml
play #1 (reboot server into rescue image): TAGS: []
retrieve first public key fingerprint TAGS: []
Store ssh key fingerprint in authorized_key TAGS: []
check rescue mode TAGS: []
activate rescue mode TAGS: []
Execute hardware reset TAGS: []
remove server from local known_hosts file TAGS: []
waiting for server to come back TAGS: []
play #2 (install ubuntu 14.04 minimal): TAGS: []
copy my public key into tempfile TAGS: []
run installimage TAGS: []
reboot server TAGS: []
remove server from local known_hosts file TAGS: []
waiting for server to come back TAGS: []
play #3 (provision fresh server): TAGS: []
hostname name={{ hostname }} TAGS: []
mount /backup TAGS: []
Fix hostname in /etc/hosts TAGS: []
disabling LANG_ALL in sshd_config TAGS: []
check if ClientAliveInterval is present in sshd_config TAGS: []
set ClientAliveInterval in sshd_config to 30 seconds TAGS: []
restart service ssh TAGS: []
create user mwiget TAGS: []
add id_dsa.pub to user mwiget TAGS: []
install ufw TAGS: []
allow rate limited ssh access, deny anything else TAGS: []
run apt-get update TAGS: []
install development tools TAGS: []
install qemu build dependencies TAGS: []
$ ansible-playbook initialize-server.yml
PLAY [reboot server into rescue image] ****************************************
GATHERING FACTS ***************************************************************
ok: [178.63.32.178]
TASK: [hetzner-boot-rescue | retrieve first public key fingerprint] ***********
ok: [178.63.32.178]
TASK: [hetzner-boot-rescue | Store ssh key fingerprint in authorized_key] *****
ok: [178.63.32.178]
TASK: [hetzner-boot-rescue | check rescue mode] *******************************
ok: [178.63.32.178]
TASK: [hetzner-boot-rescue | activate rescue mode] ****************************
ok: [178.63.32.178]
TASK: [hetzner-boot-rescue | Execute hardware reset] **************************
ok: [178.63.32.178]
TASK: [hetzner-boot-rescue | remove server from local known_hosts file] *******
changed: [178.63.32.178]
TASK: [hetzner-boot-rescue | waiting for server to come back] *****************
ok: [178.63.32.178 -> 127.0.0.1]
PLAY [install ubuntu 14.04 minimal] *******************************************
GATHERING FACTS ***************************************************************
ok: [178.63.32.178]
TASK: [hetzner-install-ubuntu | copy my public key into tempfile] *************
changed: [178.63.32.178]
TASK: [hetzner-install-ubuntu | run installimage] *****************************
changed: [178.63.32.178]
TASK: [hetzner-install-ubuntu | reboot server] ********************************
changed: [178.63.32.178]
TASK: [hetzner-install-ubuntu | remove server from local known_hosts file] ****
changed: [178.63.32.178 -> 127.0.0.1]
TASK: [hetzner-install-ubuntu | waiting for server to come back] **************
ok: [178.63.32.178 -> 127.0.0.1]
PLAY [install docker] *********************************************************
GATHERING FACTS ***************************************************************
ok: [178.63.32.178]
TASK: [install-docker | hostname name={{ hostname }}] *************************
changed: [178.63.32.178]
TASK: [install-docker | mount /backup] ****************************************
changed: [178.63.32.178]
TASK: [install-docker | Fix hostname in /etc/hosts] ***************************
changed: [178.63.32.178]
TASK: [install-docker | disabling LANG_ALL in sshd_config] ********************
changed: [178.63.32.178]
TASK: [install-docker | check if ClientAliveInterval is present in sshd_config] ***
failed: [178.63.32.178] => {"changed": true, "cmd": "grep ^ClientAliveInterval /etc/ssh/sshd_config", "delta": "0:00:00.001605", "end": "2015-09-03 17:04:09.923680", "rc": 1, "start": "2015-09-03 17:04:09.922075", "warnings": []}
...ignoring
TASK: [install-docker | set ClientAliveInterval in sshd_config to 30 seconds] ***
changed: [178.63.32.178]
TASK: [install-docker | restart service ssh] **********************************
changed: [178.63.32.178]
TASK: [install-docker | install ufw] ******************************************
ok: [178.63.32.178]
TASK: [install-docker | allow rate limited ssh access, deny anything else] ****
changed: [178.63.32.178]
TASK: [install-docker | run apt-get update] ***********************************
ok: [178.63.32.178]
TASK: [install-docker | install development tools] ****************************
changed: [178.63.32.178] => (item=git,bridge-utils,htop,tcpdump,telnet,curl)
TASK: [install-docker | install docker] ***************************************
changed: [178.63.32.178]
TASK: [install-docker | create user mwiget] ***********************************
changed: [178.63.32.178]
TASK: [install-docker | add id_dsa.pub to user mwiget] ************************
changed: [178.63.32.178]
TASK: [install-docker | run docker hello] *************************************
changed: [178.63.32.178]
TASK: [install-docker | debug var=result] *************************************
ok: [178.63.32.178] => {
"var": {
"result": {
"changed": true,
"cmd": "docker run hello-world",
"delta": "0:00:04.712482",
"end": "2015-09-03 17:05:45.865855",
"invocation": {
"module_args": "docker run hello-world",
"module_name": "shell"
},
"rc": 0,
"start": "2015-09-03 17:05:41.153373",
"stderr": "Unable to find image 'hello-world:latest' locally\nlatest: Pulling from library/hello-world\n535020c3e8ad: Pulling fs layer\naf340544ed62: Pulling fs layer\naf340544ed62: Verifying Checksum\naf340544ed62: Download complete\n535020c3e8ad: Verifying Checksum\n535020c3e8ad: Download complete\n535020c3e8ad: Pull complete\naf340544ed62: Pull complete\nDigest: sha256:a68868bfe696c00866942e8f5ca39e3e31b79c1e50feaee4ce5e28df2f051d5c\nStatus: Downloaded newer image for hello-world:latest",
"stdout": "\nHello from Docker.\nThis message shows that your installation appears to be working correctly.\n\nTo generate this message, Docker took the following steps:\n 1. The Docker client contacted the Docker daemon.\n 2. The Docker daemon pulled the \"hello-world\" image from the Docker Hub.\n 3. The Docker daemon created a new container from that image which runs the\n executable that produces the output you are currently reading.\n 4. The Docker daemon streamed that output to the Docker client, which sent it\n to your terminal.\n\nTo try something more ambitious, you can run an Ubuntu container with:\n $ docker run -it ubuntu bash\n\nShare images, automate workflows, and more with a free Docker Hub account:\n https://hub.docker.com\n\nFor more examples and ideas, visit:\n https://docs.docker.com/userguide/",
"stdout_lines": [
"",
"Hello from Docker.",
"This message shows that your installation appears to be working correctly.",
"",
"To generate this message, Docker took the following steps:",
" 1. The Docker client contacted the Docker daemon.",
" 2. The Docker daemon pulled the \"hello-world\" image from the Docker Hub.",
" 3. The Docker daemon created a new container from that image which runs the",
" executable that produces the output you are currently reading.",
" 4. The Docker daemon streamed that output to the Docker client, which sent it",
" to your terminal.",
"",
"To try something more ambitious, you can run an Ubuntu container with:",
" $ docker run -it ubuntu bash",
"",
"Share images, automate workflows, and more with a free Docker Hub account:",
" https://hub.docker.com",
"",
"For more examples and ideas, visit:",
" https://docs.docker.com/userguide/"
],
"warnings": []
}
}
}
PLAY RECAP ********************************************************************
178.63.32.178 : ok=31 changed=18 unreachable=0 failed=0
The output shown above was taken from a run without the final role provision-ubuntu executed.
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