Installation¶
opie depends on the OpenStack Compute (nova) version that you are using. Currently it is only tested with OpenStack Compute Netwton (version 14), so you need to ensure that you are running that specific version.
Installation via Ubuntu/Debian packages¶
Add the opie PPA to your system manually, by copying the linbes below and adding them to your system’s software sources:
deb http://ppa.launchpad.net/aloga/opie/ubuntu trusty main
deb-src http://ppa.launchpad.net/aloga/opie/ubuntu trusty main
Then, you can install it via apt-get:
apt-get update
apt-get install opie
Paching nova compute API¶
Unfortunately, even if opie is desinged to exploit nova’s modularity, there is a manual patch that needs to be applied. Execute the following command to save the patch:
cat > /tmp/nova-compute-api.patch << EOF
--- /a/compute/api.py 2016-07-27 13:50:06.625151062 +0200
+++ /b/compute/api.py 2016-09-13 12:40:36.190353525 +0200
@@ -886,7 +886,7 @@
access_ip_v4, access_ip_v6,
requested_networks, config_drive,
auto_disk_config, reservation_id,
- max_count):
+ max_count, preemptible):
"""Verify all the input parameters regardless of the provisioning
strategy being performed.
"""
@@ -948,6 +948,8 @@
instance_type, image_meta)
system_metadata = {}
+ if preemptible:
+ system_metadata["preemptible"] = True
# PCI requests come from two sources: instance flavor and
# requested_networks. The first call in below returns an
@@ -1144,7 +1146,7 @@
block_device_mapping, auto_disk_config,
reservation_id=None, scheduler_hints=None,
legacy_bdm=True, shutdown_terminate=False,
- check_server_group_quota=False):
+ check_server_group_quota=False, preemptible=False):
"""Verify all the input parameters regardless of the provisioning
strategy being performed and schedule the instance(s) for
creation.
@@ -1184,7 +1186,7 @@
key_name, key_data, security_groups, availability_zone,
forced_host, user_data, metadata, access_ip_v4,
access_ip_v6, requested_networks, config_drive,
- auto_disk_config, reservation_id, max_count)
+ auto_disk_config, reservation_id, max_count, preemptible)
# max_net_count is the maximum number of instances requested by the
# user adjusted for any network quota constraints, including
@@ -1553,7 +1555,8 @@
block_device_mapping=None, access_ip_v4=None,
access_ip_v6=None, requested_networks=None, config_drive=None,
auto_disk_config=None, scheduler_hints=None, legacy_bdm=True,
- shutdown_terminate=False, check_server_group_quota=False):
+ shutdown_terminate=False, check_server_group_quota=False,
+ preemptible=False):
"""Provision instances, sending instance information to the
scheduler. The scheduler will determine where the instance(s)
go and will handle creating the DB entries.
@@ -1584,7 +1587,8 @@
scheduler_hints=scheduler_hints,
legacy_bdm=legacy_bdm,
shutdown_terminate=shutdown_terminate,
- check_server_group_quota=check_server_group_quota)
+ check_server_group_quota=check_server_group_quota,
+ preemptible=preemptible)
def _check_auto_disk_config(self, instance=None, image=None,
**extra_instance_updates):
--- /a/conf/scheduler.py
+++ /b/conf/scheduler.py
@@ -214,7 +214,7 @@ configuration.
sched_driver_host_mgr_opt = cfg.StrOpt("scheduler_host_manager",
default="host_manager",
- choices=("host_manager", "ironic_host_manager"),
+ choices=("host_manager", "ironic_host_manager", "opie_host_manager"),
help="""
The scheduler host manager to use, which manages the in-memory picture of the
hosts that the scheduler uses.
EOF
And apply the patch as follows:
Ubuntu/Debian:
cd /usr/lib/python2.7/dist-packages/nova patch -p1 < /tmp/nova-compute-api.patch
RedHat/CentOS:
cd /usr/lib/python2.7/site-packages/nova patch -p1 < /tmp/nova-compute-api.patch
Once this is done, ensure that you restart your nova-api service:
service nova-api restart