Commit Graph

151 Commits

Author SHA1 Message Date
Joshua Boniface 08cb16bfbc Revamp VM migration handling
This was very old code that was hard to follow and quite fragile, with
failures and infinite loops occurring fairly frequently. These changes
make the code more robust, including the addition of timeouts, some code
cleanup, and some improvements to the logical flow.

Also forces the libvirt migration to occur on the cluster network, which
couples to changes in the libvirtd listen (via pvc-ansible) and in
Daemon.py via the previous commit.
2019-06-25 22:23:48 -04:00
Joshua Boniface d336fce253 Connect to actual IP not localhost for Libvirt 2019-06-25 22:09:32 -04:00
Joshua Boniface 75d0e7f989 Revert "Only perform fencing duties on primary"
This reverts commit 464c69aac6.

Actually, yea, this made sense - if the primary fails, it can't
fence itself.
2019-06-25 12:36:48 -04:00
Joshua Boniface 85a5a8a0c9 Disable tx offloading on bridge interfaces
Reference: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717215#68

Without this, DHCP fails when traversing only the local bridge, for
Debian Jessie or earlier (and possibly other OSes as well), due to the
missing UDP checksums. This disables the offload and hence reenables
the checksums even on the software-only bridge.

Also rearranged the steps and added comments arround this section to
better clarify what each command is doing.
2019-06-25 12:36:37 -04:00
Joshua Boniface 464c69aac6 Only perform fencing duties on primary
There was really no need for this to be shared among all the
coordinators, which seemed more fragile. This way only the primary will
try to fence dead nodes.
2019-06-24 20:17:51 -04:00
Joshua Boniface 249611b161 Remove duplicate import 2019-06-24 20:14:43 -04:00
Joshua Boniface ef272b0b7d Add removal confirmations and zap disk before add 2019-06-21 15:52:28 -04:00
Joshua Boniface 867ad1fc1b Support human-readable biconversion and in volumes 2019-06-21 09:23:52 -04:00
Joshua Boniface ddedb1a992 Set image features to supported values 2019-06-19 15:19:36 -04:00
Joshua Boniface 0f15e7cda5 Set shutdown state after final keepalive 2019-06-19 14:52:47 -04:00
Joshua Boniface 0060c0313b Put daemonstate to shutdown when stopping
This way it isn't "run" all the way until it shuts down.
2019-06-19 14:23:07 -04:00
Joshua Boniface 9a0554fdbe Remove all volumes from pool on removal
Technically not needed, but otherwise random errors may be thrown,
so best to be explicit.
2019-06-19 12:49:03 -04:00
Joshua Boniface 87907d4ce8 Remove size field from volume objects
This data is just in the stats anyways.
2019-06-19 10:45:14 -04:00
Joshua Boniface 09562fdc06 Output in json format instead 2019-06-19 10:32:01 -04:00
Joshua Boniface a940d03959 Fix some bugs and add RBD volume stats 2019-06-19 10:25:22 -04:00
Joshua Boniface db0b382b3d Don't bother with snapshot management by Daemon
This is *definitely* not needed in the end, and just uses RAM for
no conceivable purpose. Snapshots are fully client-managed.
2019-06-19 09:43:04 -04:00
Joshua Boniface 1c9f606480 Implement volume and snapshot handling by daemon
This seems like a super-gross way to do this, but at the moment
I don't have a better way. Maybe just remove this component since
none of the volume/snapshot stuff is dynamic; will see as this
progresses.
2019-06-19 09:40:32 -04:00
Joshua Boniface 784b428ed0 Add creation of volume and snapshot lists 2019-06-19 09:29:36 -04:00
Joshua Boniface 064e6455bc Correct some more bugs 2019-06-19 00:29:21 -04:00
Joshua Boniface a4ab3075ab Correct some bugs around new code 2019-06-19 00:23:25 -04:00
Joshua Boniface 01959cb9e3 Implementation of RBD volumes and snapshots
Adds the ability to manage RBD volumes (add/remove) and RBD
snapshots (add/remove). (Working) list functions to come.
2019-06-19 00:12:44 -04:00
Joshua Boniface 2bbbda3da5 Only trigger pool updates on primary 2019-06-18 21:26:05 -04:00
Joshua Boniface 612f5ab52c Strip pv_block from stdout 2019-06-18 20:34:25 -04:00
Joshua Boniface 1622226c32 Add more logging during OSD creation/deletion 2019-06-18 20:31:04 -04:00
Joshua Boniface 3adeef6fdd Use the fsid to activate new OSDs 2019-06-18 20:22:28 -04:00
Joshua Boniface 443108f53d Add support for enable/disable keepalive detail 2019-06-18 19:54:42 -04:00
Joshua Boniface 79f284a0a9 Pass logger into run_command 2019-06-18 13:45:59 -04:00
Joshua Boniface 080ca3201c Correct actual problem with this_node 2019-06-18 13:43:54 -04:00
Joshua Boniface d076f9f4eb Use self.this_node everywhere 2019-06-18 13:25:16 -04:00
Joshua Boniface aee078f3eb Support disabling keepalive logging 2019-06-18 12:44:07 -04:00
Joshua Boniface b0411e8e1a Remove "error" message from Ceph commands
This triggeres at every node start and isn't useful.
2019-06-18 12:41:38 -04:00
Joshua Boniface 8d9007f697 Remove OSD stat collection if count is zero
Otherwise, ceph osd df will hang indefinitely trying to get data
for the zero OSDs.
2019-06-18 12:36:53 -04:00
Joshua Boniface 5a327dc41a Clean up Ceph pipeline and add more debug logs 2019-06-18 11:19:03 -04:00
Joshua Boniface 46a416bc78 Use a proper variable for vni_mtu 2019-06-18 00:01:12 -04:00
Joshua Boniface 1f92b90a3e Don't encode initial data as we're using zkhander 2019-06-17 23:53:16 -04:00
Joshua Boniface d4ebe63d9b Rename network device field
It seems much nicer and more consistent as "device" rather than as
"name".
2019-06-17 23:44:41 -04:00
Joshua Boniface 1d3f868206 Unify network devices and addresses in config
The old way of doing this was a little cumbersome, with an upper YAML
tree split between "devices" (name and MTU) and addresses. This commit
unifies these under the root "networking" section to make this section
clearer.
2019-06-17 23:41:07 -04:00
Joshua Boniface e70255dbd6 Support configurable interface MTUs
MTUs were hardcoded at 9000, which breaks if the underlying interface
or network switch does not support jumbo frames, a possible deployment
limitation. This has non-obvious consequences due to MTU mismatches
for certain services (Ceph, Zookeeper, etc.).

This commit adds support for configurable MTUs for each interface,
set in pvcd.yaml. The example has been updated to reflect this, with
a default of 1500 (the Ethernet standard).

This commit also adds autoconfiguration of the VNI device MTU based
on the `vni_mtu` value, the same for bridge networks and minus 50
(rather than 200 from the hardcoded value, based on the following
resource [1]) for VXLAN networks.

[1] http://ipengineer.net/2014/06/vxlan-mtu-vs-ip-mtu-consideration/
2019-06-17 23:34:48 -04:00
Joshua Boniface c583ee1709 Revert "Wait a little longer"
This reverts commit bd7a55e9e1.

This is not really needed, but do keep the 5s wait
2019-06-17 21:56:06 -04:00
Joshua Boniface bd7a55e9e1 Wait a little longer 2019-06-17 12:14:13 -04:00
Joshua Boniface 23994f8a11 Increase wait time for daemons and log message 2019-06-17 10:30:46 -04:00
Joshua Boniface fe654aa5a2 Correct typo in daemon 2019-06-16 19:27:20 -04:00
Joshua Boniface 14e9ba892c Wait on both sides for 30s
Still finding issues with the flush
2019-05-24 01:23:18 -04:00
Joshua Boniface ae37afcf75 Wait 10 seconds when starting pvc-flush
Without waiting the unflush will trigger too soon, before the
daemon is fully ready and such it fails in odd ways.
2019-05-23 23:35:01 -04:00
Joshua Boniface e8b666708c Add one final keepalive update before exiting 2019-05-23 23:23:03 -04:00
Joshua Boniface 4c5ce9b995 Perform additional tweaks to units
Use RemainAfterExit to avoid pvc-flush from auto-stopping immediately.

Use PartOf to tie services to the target itself.

Use --wait on flush to avoid daemon stopping before flush is complete.
2019-05-23 23:18:28 -04:00
Joshua Boniface e46aa22989 Remove invalid Restart in pvc-flush.service 2019-05-23 22:51:36 -04:00
Joshua Boniface 7c6132f7dd Add node autoflush service and target
Add a systemd service to manage node flush/unflush, useful during
system startup and shutdown to avoid requiring administrator
intervention for this to occur. This is optional and the service is
not enabled by default, and the postinst script informs the
administrator of this.

Also adds a systemd target to collect the two service units together
and provide an easy way to flush+shutdown or startup+unflush the
entire PVC system.

Closes #28
2019-05-23 22:42:51 -04:00
Joshua Boniface 8ef21cf9f2 Sleep longer before removing gateways
1 second was just slightly too little time to wait and packets would
occasionally be lost on primary switchover. Increase this to 2
seconds to provide more time for arping to run on the new primary.
2019-05-23 22:20:38 -04:00
Joshua Boniface 8881b97e8b Correct a missing capitalization 2019-05-21 23:19:19 -04:00