IH-621: Add IPMI host power on support and remove DRAC

DRAC power on support relies upon a Dell supplemental pack which is no longer
available, so remove it.

Add IPMI power on support using ipmitool, which should work with virtually any
modern server which has a BMC, regardless of vendor.

Signed-off-by: Alex Brett <[email protected]>

ocaml/idl/datamodel_host.ml

@@ -1375,7 +1375,7 @@ let set_power_on_mode =
         (Ref _host, "self", "The host")
       ; ( String
         , "power_on_mode"
-        , "power-on-mode can be empty, wake-on-lan, DRAC or other"
+        , "power-on-mode can be empty, wake-on-lan, IPMI or other"
         )
       ; (Map (String, String), "power_on_config", "Power on config")
       ]

scripts/Makefile

@@ -178,7 +178,7 @@ endif
 # poweron
 	$(IPROG) poweron/wlan.py $(DESTDIR)$(PLUGINDIR)/wlan.py
 	$(IPROG) poweron/wlan.py $(DESTDIR)$(PLUGINDIR)/wake-on-lan
-	$(IPROG) poweron/DRAC.py $(DESTDIR)$(PLUGINDIR)/DRAC.py
+	$(IPROG) poweron/IPMI.py $(DESTDIR)$(PLUGINDIR)/IPMI.py
 	$(IPROG) poweron/power-on.py $(DESTDIR)$(PLUGINDIR)/power-on-host
 # YUM plugins
 	$(IPROG) yum-plugins/accesstoken.py $(DESTDIR)$(YUMPLUGINDIR)

scripts/poweron/IPMI.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+
+import os.path
+import sys
+
+import xcp.cmd as cmd
+
+
+class IPMI_POWERON_FAILED(Exception):
+    """IPMI Poweron exception"""
+    pass
+
+ipmi_path = "/usr/bin/ipmitool"
+
+def IPMI(power_on_ip, user, password):
+    (rc, stdout, stderr) = cmd.runCmd(
+        [
+            ipmi_path,
+            "-H",
+            power_on_ip,
+            "-I", "lanplus",
+            "-U",
+            user,
+            "-P",
+            password,
+            "chassis", "power", "on"
+        ],
+        with_stdout=True,
+        with_stderr=True,
+    )
+    if rc != 0:
+        raise IPMI_POWERON_FAILED(stderr)
+    return stdout
+
+
+def main():
+    if len(sys.argv) < 3:
+        exit(0)
+    ip = sys.argv[1]
+    user = sys.argv[2]
+    password = sys.argv[3]
+    print(IPMI(ip, user, password))
+
+
+if __name__ == "__main__":
+    main()

scripts/poweron/power-on.py

@@ -41,14 +41,14 @@ def main(session, args):
 
     power_on_config = session.xenapi.host.get_power_on_config(remote_host)
 
-    if mode == "DRAC":
+    if mode == "IPMI":
         ip = power_on_config["power_on_ip"]
         user = power_on_config["power_on_user"]
         secret = power_on_config["power_on_password_secret"]
         secretref = session.xenapi.secret.get_by_uuid(secret)
         password = session.xenapi.secret.get_value(secretref)
-        modu = __import__("DRAC")
-        modu.DRAC(ip, user, password)
+        modu = __import__("IPMI")
+        modu.IPMI(ip, user, password)
         return waitForXapi(session, remote_host)
     elif mode == "wake-on-lan":
         modu = __import__("wlan")
@@ -60,8 +60,8 @@ def main(session, args):
             modu = __import__(mode)
         except ModuleNotFoundError as e:
             # iLO.py was removed as part of REQ-811, so tell user why they are receiving this error
-            if mode == "iLO":
-                syslog.syslog(syslog.LOG_ERR, "iLO script was removed")
+            if mode in ["iLO", "DRAC"]:
+                syslog.syslog(syslog.LOG_ERR, f"{mode} script has been removed")
             raise e
 
         modu.custom(session, remote_host, power_on_config)