Migrate to Hetzner cloud

roles/keepalived-hcloud/files/hcloud_failover.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+# (c) 2018 Maximilian Siegl
+
+import sys
+import json
+import os
+import requests
+from multiprocessing import Process
+
+CONFIG_PATH = os.path.join(os.path.abspath(
+    os.path.dirname(__file__)), "config.json")
+
+
+def del_ip(ip_bin_path, floating_ip, interface):
+    os.system(ip_bin_path + " addr del " + floating_ip + " dev " + interface)
+
+
+def add_ip(ip_bin_path, floating_ip, interface):
+    os.system(ip_bin_path + " addr add " + floating_ip + " dev " + interface)
+
+
+def change_request(endstate, url, header, payload, ip_bin_path, floating_ip, interface):
+    if endstate == "BACKUP":
+        del_ip(ip_bin_path, floating_ip, interface)
+    elif endstate == "FAULT":
+        del_ip(ip_bin_path, floating_ip, interface)
+    elif endstate == "MASTER":
+        add_ip(ip_bin_path, floating_ip, interface)
+        print("Post request to: " + url)
+        print("Header: " + str(header))
+        print("Data: " + str(payload))
+        r = requests.post(url, data=payload, headers=header)
+        print("Response:")
+        print(r.status_code, r.reason)
+        print(r.text)
+    else:
+        print("Error: Endstate not defined!")
+
+
+def main(arg_type, arg_name, arg_endstate):
+    with open(CONFIG_PATH, "r") as config_file:
+        config = json.load(config_file)
+
+    header = {
+        "Content-Type": "application/json",
+        "Authorization": "Bearer " + config["api-token"]
+    }
+
+    payload = '''{"server": ''' + str(config["server-id"]) + "}"
+
+    print("Perform action for transition to " + arg_endstate + " state")
+
+    for ips in config["ips"]:
+        url = config["url"].format(ips["floating-ip-id"])
+        Process(target=change_request, args=(arg_endstate, url, header, payload,
+                                             config["ip_bin_path"], ips["floating-ip"], config["interface"])).start()
+
+
+if __name__ == "__main__":
+    main(arg_type=sys.argv[1], arg_name=sys.argv[2], arg_endstate=sys.argv[3])