From 53b7c937716d3ef523874a4cb3812fa8ba86dc2b Mon Sep 17 00:00:00 2001
From: nicoo <nicoo@realraum.at>
Date: Thu, 14 Jun 2018 00:18:51 +0200
Subject: [PATCH] vm-install: Remove hosts from known hosts in the playbook

This avoid relying on localconfig being used.
---
 ansible/remove-known-host.sh   |   15 ---------------
 ansible/remove_known_hosts.sh  |   13 +++++++++++++
 ansible/remove_known_hosts.yml |   11 +++++++++++
 ansible/vm-install.sh          |    4 ----
 ansible/vm-install.yml         |    2 ++
 5 files changed, 26 insertions(+), 19 deletions(-)
 delete mode 100755 ansible/remove-known-host.sh
 create mode 100755 ansible/remove_known_hosts.sh
 create mode 100644 ansible/remove_known_hosts.yml

diff --git a/ansible/remove-known-host.sh b/ansible/remove-known-host.sh
deleted file mode 100755
index 2c5fd7f..0000000
--- a/ansible/remove-known-host.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-if [ -z "$1" ]; then
-  echo "$0 <host>"
-  exit 1
-fi
-
-SHORT="r3-${1%%.*}"
-SSH_HOST=$(ssh -G "$SHORT" | grep "^hostname " | awk '{ print($2) }' )
-
-for name in $SHORT $SSH_HOST; do
-  ssh-keygen -f "$HOME/.ssh/known_hosts" -R "[$name]:22000"
-done
-
-exit 0
diff --git a/ansible/remove_known_hosts.sh b/ansible/remove_known_hosts.sh
new file mode 100755
index 0000000..ee4a0fb
--- /dev/null
+++ b/ansible/remove_known_hosts.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+set -eu
+
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 vmname [vmname ...]" >&2
+    exit 1
+fi
+
+cd "$(dirname "$0")"
+
+for vmname in "$@"; do
+    ansible-playbook -e vmname="${vmname}" remove_known_hosts.yml
+done
diff --git a/ansible/remove_known_hosts.yml b/ansible/remove_known_hosts.yml
new file mode 100644
index 0000000..5491342
--- /dev/null
+++ b/ansible/remove_known_hosts.yml
@@ -0,0 +1,11 @@
+- name: Purge host from known hosts
+  hosts: localhost
+  gather_facts: no
+  tasks:
+    - command: ssh-keygen -f ~/.ssh/known_hosts -R [{{ item }}]:{{ hostvars[vmname].ansible_port }}
+      with_items:
+        - "{{ hostvars[vmname].ansible_host }}"
+        - r3-{{ vmname }}
+        - r3g-{{ vmname }}
+        - r3e-{{ vmname }}
+        - "{{ hostvars[vmname].vm_network_cooked.primary.ip }}"
diff --git a/ansible/vm-install.sh b/ansible/vm-install.sh
index 0cc0be4..49d3e16 100755
--- a/ansible/vm-install.sh
+++ b/ansible/vm-install.sh
@@ -15,9 +15,5 @@ shift
 echo "installing vm: $name with $distro/$codename"
 echo ""
 
-echo "########## clearing old ssh host keys #########"
-./remove-known-host.sh "$name"
-echo ""
-
 echo "######## running the install playbook ########"
 exec ansible-playbook -e "vmname=$name" -e "vmdistro=$distro" -e "vmdistcodename=$codename" $@ vm-install.yml
diff --git a/ansible/vm-install.yml b/ansible/vm-install.yml
index 4a6a0b5..507906f 100644
--- a/ansible/vm-install.yml
+++ b/ansible/vm-install.yml
@@ -14,6 +14,8 @@
       group: _vmhost_
   # TODO: add some sanity checks
 
+- import_playbook: remove_known_hosts.yml
+
 - name: basic installation
   hosts: _vmhost_
   roles:
-- 
1.7.10.4