CLOUDSTACK-8443: Support CentOS 7 as KVM hypervisorThis adds support for CentOS 7 as a KVM hypervisor. As discussed in the Jira issue, the root cause of the issue was the `cloudstack-setup-agent` script that added this line to `/etc/libvirt/qemu.conf`:
`cgroup_controllers=["cpu"]`
On CentOS 6 this 'works', but since by default no cgroups are mounted, this setting is ignored by `libvirtd`. On CentOS 7 is does not work, because the `cpu` and `cpuacct` are 'co-mounted'. This simpy means you cannot use one without the order. The config line above instructs `libvirtd` to only use the `cpu` cgroup, which it can't.
There was code added to make sure the `cpu` cgroup was not co-mounted. It did this with a shell script, but after a reboot it was gone. It wasn't reliable and not even a solution at all. I went ahead and removed the code, because the co-mounted cgroups work fine. The real issue was the config line we put in `/etc/libvirt/qemu.conf` so much better to fix that instead.
The default for `libvirtd` is to use only cgroups that are mounted. When you remove the 'cgroup_controllers' line, the default kicks in. According to the `qemu.conf` file, the default is:
`cgroup_controllers = ["cpu", "devices", "memory", "blkio", "cpuacct", "net_cls"]`
Then again, if it's not mounted, it's not used. So, that's a nice way to control it.
This works just fine for both RHEL/CentOS 6 and RHEL/CentOS 7.
Along the debugging, I came across some small issues here and there which I also fixed in this PR.
If you test this, be sure to build RPMs from this branch and install those on the KVM hypervisor.
At Schuberg Philis we run KVM hypervisors on CentOS 7 for months with these fixes. Now I took the time to fix the issues in CloudStack, rather than work around them.
@bhaisaab @karuturi could you please review this? Thanks!
Please note:
The next step is to fix CLOUDSTACK-8625 (Systemd profile for KVM Agent) as currently a sysvinit script is still used. Although it works, we do not have any systemd benefits. As it is a separate issue, I'll try to address it in a separate PR.
* pr/731:
CLOUDSTACK-8443: detect CentOS 7.x as RHEL 7 alike
CLOUDSTACK-8443: mention the correct logfile
CLOUDSTACK-8443: display the right hypervisor type
CLOUDSTACK-8443: don't try to fix co-mounted cgroups
Signed-off-by: Remi Bergsma <github@remi.nl>
This setting works on CentOS 6 / RHEL 6 but does nothing, as
"cpu" cgroup is not mounted. On CentOS 7 / RHEL 7 systemd does
mount cgroups and "cpu" is co-mounted with "cpuacc". Hence, if
we specify "cpu" then this results in an error because it can
only use them both, or none.
By removing the setting, we rely on the default of qemu, which
is:
cgroup_controllers = ["cpu", "devices", "memory", "blkio", "cpuacct", "net_cls"]
Only if they are really mounted, they will be used. So, this will
work on both version 6 and 7.
The 'fix script' didn't work well, as after a reboot you'd still have qemu
throwing errors. Now we can handle the co-mountedcgroups.
Removed duplicate code in CitrixResourceBase and its subclassesRemoved unnecessary duplicated code by having the body of the getPatchFiles method only in the CitrixResourceBase superclass. Given that all of its implementations consisted of the same code except for the path which contains the necessary file for that implementation. An abstract method getPatchFilePath was created in the CitrixResourceBase superclass so that each implementation may return the path containing the specific file needed by that implementation.
Test cases were created for each implementation, simple as they may be. One assert is made to verify that the path returned by each implementation corresponds to the path that was previously specified on each getPatchFiles implementation.
* pr/700:
Removed duplicate code in CitrixResourceBase.getPatchFiles
Signed-off-by: Remi Bergsma <github@remi.nl>
This tries to avoid cleaning by a device name.
This closes#718
(cherry picked from commit 74f697a2dd6e2630fa1fa5949e41c7d539015fbf)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Changed methodnames according to Nic.java refactor.
Fixed NicVO.java due to regression from Nic.java refactor.
Fixed VmWareGuru.java after Nic.java refactor.
See issue CLOUDSTACK-8736 for ongoing effort to clean up network code.
@cristofolini comments:
Removed unnecessary duplicated code by having the body of the
getPatchFiles method only in the
CitrixResourceBase superclass. Given that all of its implementations
consisted of the same code
except for the path which contains the necessary file for that
implementation. An abstract method
getPatchFilePath was created in the CitrixResourceBase superclass so
that each implementation may
return the path containing the specific file needed by that
implementation.
Test cases were created for each implementation, simple as they may be.
One assert is made to verify
that the path returned by each implementation corresponds to the path
that was previously specified
on each getPatchFiles implementation.
removed trailing whitespace
Cloudstack 8656: do away with more silently ignoring exceptions.a lot of messages added.
some restructuring for test exception assertions and try-with-resource blocks
* pr/654: (29 commits)
CLOUDSTACK-8656: more logging instead of sysout
CLOUDSTACK-8656: use catch block for validation
CLOUDSTACK-8656: class in json specified not found
CLOUDSTACK-8656: removed unused classes
CLOUDSTACK-8656: restructure of tests
CLOUDSTACK-8656: reorganise sychronized block
CLOUDSTACK-8656: restructure tests to ensure exception throwing
CLOUDSTACK-8656: validate the throwing of ServerApiException
CLOUDSTACK-8656: logging ignored exceptions
CLOUDSTACK-8656: try-w-r removes need for empty catch block
CLOUDSTACK-8656: try-w-r instead of clunckey close-except
CLOUDSTACK-8656: deal with empty SQLException catch block by try-w-r
CLOUDSTACK-8656: unnecessary close construct removed
CLOUDSTACK-8656: message about timed buffer logging
CLOUDSTACK-8656: message about invalid number from store
CLOUDSTACK-8656: move cli test tool to separate file
CLOUDSTACK-8656: exception is the rule for some tests
CLOUDSTACK-8656: network related exception logging
CLOUDSTACK-8656: reporting ignored exceptions in server
CLOUDSTACK-8656: log in case we are on a platform not supporting UTF8
...
Signed-off-by: Remi Bergsma <github@remi.nl>
Before this commit the call to `getResizeScriptType` would throw
an exception (earlier versions returned `null`, which was fine) -
this caused the RBD case to fail. By changing the default to
notify only we fix the case for any non-CLVM and non-QCOW cases.
This is RBD for now, but this should extend to new storage
types suppored by Libvirt natively in future.
When dumping XML use appropriate flags:
1, VIR_DOMAIN_XML_SECURE (dump security sensitive information too)
8, VIR_DOMAIN_XML_MIGRATABLE (dump XML suitable for migration)
Source:
https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainXMLFlags
This fixes CVE 2015-3252: VNC password lost during VM migration across KVM
hosts. The issue is also seen when a VM is rebooted.
(cherry picked from commit cb2aca751630ea60ad2fffed3d12e3fa2a5e93b5)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
* pr/547:
CLOUDSTACK-8601. VMFS storage added as local storage can be re-added as shared storage. Fail addition of a VMFS shared storage pool in case it has already been added as local storage in CS.
Signed-off-by: Mike Tutkowski <mike.tutkowski@solidfire.com>
On NFS we write a heartbeat, but without those we can not safely
fence off a host.
If we fence without knowing about a heartbeat we can cause a split-brain situation.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
- Make sure the new password replaces the old one in the queue
- Updated the patch files for XenServer
- Updated the script path on LibvirtComputing class
- Adding update_host_passwd to VRScripts
- Add implementation to CitrixUpdateHostPasswordCommandWrapper
- Improve testUpdateHostPasswordCommand() unit test on CitrixRequestWrapperTest
- Adding update_host_passwd.sh script
- Adding the host IP address as an instance variable on UpdateHostPasswordCommand
- Improving the Unit Test (LibvirtComputingResourceTest) to get it covering the new code
- Make sure doUpdateHostPassword() doesn't get called if flag is set to false
- Do not update XenServer hosts if the cluster ID is not informed
This closes#559
- Adding more unit tests as suggested by Daan and Rajani.
- Mocking SshHelper and the Script classes, used by Citrix and Libvirt resources respectively.
- Changed location of the update_host_passwd script
- Updated the patch files for XenServer
- Updated the script path on LibvirtComputing class
- Removed the hostIP from the LibvirtUpdateHostPasswordCommandWrapper execute() method
- Adding update_host_passwd to VRScripts
- Add accessor method to host password on CitrixResourceBase
- Add implementation to CitrixUpdateHostPasswordCommandWrapper
- Improve testUpdateHostPasswordCommand() unit test on CitrixRequestWrapperTest
- Add line to patch files on xenserver directory
Concerning the LibVirt change:
- I forgot to assing the return of the getDefaultHypervisorScriptsDir() method to the hypervisorScriptsDir variable
- Modifying the LibvirtUpdateHostPasswordCommandWrapper in order to execute the script on the host
- Adding the script path to LibvirtComputingResource
- Adding the host IP address as an instance variable on UpdateHostPasswordCommand
- Improving the Unit Test (LibvirtComputingResourceTest) to get it covering the new code
- Make sure the doUpdateHostPassword() method returns the result from the answer, not always true
- Added the LibvirtUpdateHostPasswordCommandWrapper class, which will handle the changes in the KVM agent
That's will be further implemented in the future. The command will avoid the agent to complain about Unsupported command
- Added a test to make sure the current implementation of the comment works
- If changes in the future, it will also require changes. In that way, we make sure nobody will break it
Signed-off-by: wilderrodrigues <wrodrigues@schubergphilis.com>
This closes#527
