Commit graph

24 commits

Author SHA1 Message Date
Hannes Mehnert c9afb6f5dc CLOEXEC for all the openfile() calls to avoid leaking the fifo's (created and opened by vmmd itself) to ukvm-bin started later 2018-04-30 00:20:28 +02:00
Hannes Mehnert 2bf1b96178 get rid of FreeBSD kludge by using devfs! 2018-04-26 22:17:54 +02:00
Hannes Mehnert 0583fbfaf1 stats: transmit vmid in add/remove/stats, pid only in add
don't use /tmp anymore, but /var/run/albatross for fifos + sockets + vm images,
  and /var/db/albatross for ukvm-bin and crls, and /var/log/albatross for logging

vmm_console/vmm_log/vmm_stats_lwt: delete socket on startup if it exists

vmm_influxdb_stats: connects to vmm_stats socket and pushes every interval in
 influxdb line format via tcp to specified host and port
2018-04-26 00:03:46 +02:00
Hannes Mehnert 9696953cd7 revise force-restart: now with wait for kill and resource cleanup before start
allows to cleanup various hacks, such as checking for pid in vmm_resources
or removing temporarily the allocated resources from the resource map in vmm_engine

semantics is now slightly different, but for sure enhanced.
- each VM has a Lwt.wait () task attached in Vmm_engine.t (tasks : 'c String.Map.t)
- normal create shouldn't be much different, apart from memoizing the sleeper
- after waitpid is done in vmmd, and vmm_engine.shutdown succeeded, Lwt.wakeup is called for the sleeper
- force create now:
 - checks static policies
 - looks for existing VM (and task), if present: kill and wait for task in vmmd
 - continue with presence checking of vm name, dynamic policies, allocate resources (tap, img, fifo)

this means the whole randomness in filenames can be removed, and the
communication between vmm_console and vmm_client is working again (attach/detach
could not work since vmm_console knew only about "albatross.AAA.BBB.RANDOM",
whereas vmm_client insisted on "AAA.BBB"

resource overcommitment (and races in e.g. block device closing + opening) are
gone now, only if the old vm is cleanup up, resources for the new one are
allocated and it is executed
2018-04-05 01:02:45 +02:00
Hannes Mehnert a89b2925fd Vmm_core.cmd is now a variant (no longer polymorphic variant), some renames in Vmm_wire.Stats and Vmm_wire.Console to disambiguate 2018-04-04 22:16:31 +02:00
Hannes Mehnert fdab43aed6 vmm_engine: finish renaming Destroy_image -> Destroy_vm (broken since bb61388cfc) 2018-04-04 21:46:37 +02:00
Hannes Mehnert 7a4661b2e1 style: require lwt 3.0.0, fix warnings, disable 4 (fragile pattern matching) and 48 (implicit elimination of optional argument) 2018-04-03 22:58:31 +02:00
Hannes Mehnert a0c0f39734 vmm_stats: more debug, ignore vmmapi_open failure
vmm_stats_lwt: drop all pids on socket disconnect
vmmd: setup statistics slightly later (after the chmod on FreeBSD)
2018-04-01 23:59:12 +02:00
Hannes Mehnert c978dcfb14 less debug output of resources 2018-03-22 23:30:15 +01:00
Hannes Mehnert e48d3b3457 vmm_lwt/vmm_tls: less debug output of read/write stuff 2018-03-22 17:00:08 +01:00
Hannes Mehnert d3941e70c6 style 2018-03-22 17:00:08 +01:00
Hannes Mehnert b9d5fa94f9 call waitpid() earlier, separate freebsd kludge (chmod g+rw), fixes #9 2018-03-22 17:00:08 +01:00
Hannes Mehnert db8ae1ee37 compression, fixes #6 2018-03-22 17:00:08 +01:00
Hannes Mehnert cfa7ccd1e0 safer and clearer error semantics for all processes, fixes #5 2018-03-22 17:00:08 +01:00
Hannes Mehnert 88012094f8 remove unused Vmm_commands.waitpid, catch EINTR in call to Lwt_unix.waitpid (in Vmm_lwt) 2018-03-22 17:00:08 +01:00
Hannes Mehnert bb61388cfc new permission: force_create
a client certificate may either contain `Create or `Force_create permission.  If
the latter is used (vmm_req_vm --force), and a VM with the same name already
exists, this is destroyed (if the dynamic resources without the existing would
allow the new one to be deployed) and the new one is started.

I had this concrete deployment scenario, where kill ; create takes some minutes
since it is 10MB data which needs to be transferred from my laptop to a remote
server (me behind dialup).

- renamed `Image to `Create
- renamed `Destroy_image to `Destroy_vm
2018-03-22 17:00:08 +01:00
Hannes Mehnert 0052c3dc84 replace vmimage (Cstruct) with 0 after we wrote it to disk to avoid
the host process from referencing the whole vmimage
2018-03-22 13:54:33 +01:00
Hannes Mehnert 8807150c86 use a random temporary file instead of the serial numbers of the certificate chain for temporary host resources 2018-03-22 13:54:33 +01:00
Hannes Mehnert 8407d13b15 port to new asn + x509 2017-12-23 15:03:56 +01:00
Hannes Mehnert bd8cc0ad22 style 2017-12-20 22:29:22 +01:00
Hannes Mehnert 19c37d2ca1 pass --mem to ukvm-bin, now that is merged in master 2017-10-26 23:07:29 +02:00
Hannes Mehnert 1d3cf484c4 use SIGTERM, not SIGKILL - now solo5 ukvm has the ability to execute atexit functions 2017-10-26 22:21:15 +02:00
Hannes Mehnert bdedadf689 vmmd:
- fix fd leak (always close socket)
 - send first message (login) after renegotiation

vmm_stats:
 - remove unneeded functionality (keeping old statistics around)
 - translate internal tap names to bridge names
 - gather statistics from vmmapi as well

vmm_prometheus_stats:
 - new exporter of statistics to prometheus

*:
 - fix typo in README
 - style
2017-09-14 21:47:07 +01:00
Hannes Mehnert 02be3f4528 initial 2017-07-10 10:38:25 +01:00