Improved performance on creating VM for KVM virtualization.
On a huge hosts every "ifconfig | grep" takes a lot of time (about 2.5-3 minutes on hosts with 500 machines). For example: ip link show dev $vlanDev > /dev/null is faster than ifconfig |grep -w $vlanDev > /dev/null. But using ip command is much better. Using this patch you can create 500s machine in 10 seconds. You don't need slow ifconfig prints anymore.
In 6233a77d15adde86302a11b2bcda604313833e91 as a part of PR #2432 the
bash() function was replaced by the execute() function.
Somehow this last calling of the bash() function was not caught by testing
and is still in there.
This causes Exceptions to be thrown by the Security Group script.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
On RHEL/CentOS/Fedora the bridge related sysctl rules are enabled
in kernel by default but can only be disabled. Enabling those keys
will fail, causing iptables/ebtables tables to not be created
and fails SG on CentOS.
This also fixes an integration test case, which assumes first few
tests complete within 3 minutes. In nested env the value may be large,
this increases the value to 20 minutes.
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
- We should return a boolean and not a String 'true' or 'false'. Although this output is never checked by the calling function(s).
- Do not use == False or == None as that is not according to the Python specs.
- Calling just print 'hello' is deprecated and won't work in newer Python versions. We should use the print() function.
- Remove unused and commented function.
- Use logging.warning() instead of logging.warn()
- Use subprocess.check_output() for execution. This is the Python way of executing commands.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
With merge of PR #2028 the separator for lines to the Security Group
Python script changed from : to ; to support IPv6 addresses.
This broke certain situations where rules were parsed improperly. This
commit fixes the issue.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
This script is used to upload snapshots to swift and is executed on dom0 of XenServer. The PR make logging from /var/log/cloud/swiftxenserver.log more meaningful as the below example;
2017-06-15 10:26:32 DEBUG [root] #### CLOUD enter swift ####
2017-06-15 10:26:32 DEBUG [root] #### CLOUD upload begin S-12522/d841b62a-7f83-4d5d-9e9d-2940115f7fa9.vhd to swift ####
2017-06-15 10:27:13 DEBUG [root] #### CLOUD upload complete S-12522/d841b62a-7f83-4d5d-9e9d-2940115f7fa9.vhd to swift: 0:00:40 @ 45 MB/s ####
2017-06-15 10:27:13 DEBUG [root] #### CLOUD exit swift ####
This fixes regression introduced in PR #2295:
- Pass assign=true to fetch new public IP
- Use wait_until instead of sleep+wait in tests
- Loop through list of public IP ranges to match the systemvm gateway
- Fix potential NPE seen when adding simulator host(s)
- Removes aria2 installation from setup_agent.sh using yum, it's already
dependency for cloudstack-agent package
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
This feature allows using templates and ISOs avoiding secondary storage as intermediate cache on KVM. The virtual machine deployment process is enhanced to supported bypassed registered templates and ISOs, delegating the work of downloading them to primary storage to the KVM agent instead of the SSVM agent.
Template and ISO registration:
- When hypervisor is KVM, a checkbox is displayed with 'Direct Download' label.
- API methods registerTemplate and registerISO are both extended with this new parameter directdownload.
- On template or ISO registration, no download job is sent to SSVM agent, CloudStack would only persist an entry on template_store_ref indicating that template or ISO has been marked as 'Direct Download' (bypassing Secondary Storage). These entries are persisted as:
template_id = Template or ISO id on vm_template table
store_id NULL
download_state = BYPASSED
state = Ready
(Note: these entries allow users to deploy virtual machine from registered templates or ISOs)
- An URL validation command is sent to a random KVM host to check if template/ISO location can be reached. Metalink are also supported by this feature. In case of a metalink, it is fetched and URL check is performed on each of its URLs.
- Checksum should be provided as indicated on #2246: {ALGORITHM}CHKSUMHASH
- After template or ISO is registered, it would be displayed in the UI
Virtual machine deployment:
When a 'Direct Download' template is selected for deployment, CloudStack would delegate template downloading to destination storage pool via destination host by a new pluggable download manager.
Download manager would handle template downloading depending on URL protocol. In case of HTTP, request headers can be set by the user via vm_template_details. Those details should be persisted as:
Key: HTTP_HEADER
Value: HEADERNAME:HEADERVALUE
In case of HTTPS, a new API method is added uploadTemplateDirectDownloadCertificate to allow user importing a client certificate into all KVM hosts' keystore before deployment.
After template or ISO is downloaded to primary storage, usual entry would be persisted on template_spool_ref indicating the mapping between template/ISO and storage pool.
This commit adds support for passing IPv6 Addresses and/or Subnets as
Secondary IPs.
This is groundwork for CLOUDSTACK-9853 where IPv6 Subnets have to be
allowed in the Security Groups of Instances to we can add DHCPv6
Prefix Delegation.
Use ; instead of : for separating addresses, otherwise it would cause
problems with IPv6 Addresses.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
- All tests should pass on KVM, Simulator
- Add test cases covering FSM state transitions and actions
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Host-HA offers investigation, fencing and recovery mechanisms for host that for
any reason are malfunctioning. It uses Activity and Health checks to determine
current host state based on which it may degrade a host or try to recover it. On
failing to recover it, it may try to fence the host.
The core feature is implemented in a hypervisor agnostic way, with two separate
implementations of the driver/provider for Simulator and KVM hypervisors. The
framework also allows for implementation of other hypervisor specific provider
implementation in future.
The Host-HA provider implementation for KVM hypervisor uses the out-of-band
management sub-system to issue IPMI calls to reset (recover) or poweroff (fence)
a host.
The Host-HA provider implementation for Simulator provides a means of testing
and validating the core framework implementation.
Signed-off-by: Abhinandan Prateek <abhinandan.prateek@shapeblue.com>
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
After integrating XS with CCP the following folder gets created: /var/log/cloud/ however the logs in that are not rotated resulting in root file system fill up. It was a known issue and link http://support.citrix.com/article/CTX138064 describes the issue and solution. Used the article and added corresponding changes to Cloudstack.
ip6tables no longer takes '--icmpv6-type any' as a argument.
To allow all ICMPv6 traffic with ip6tables it has to be invoked this way:
$ ip6tables -I i-2-14-VM -p icmpv6 -s ::/0 -j ACCEPT
All ICMPv6 traffic is now allow into the Instance.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
This fixes the agreed upon url on download.cloudstack.org in various
sql files and misc scripts.
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
This commit implements Ingress and Egress filtering for IPv6 in
Basic Networking.
It allows for opening and closing ports just as can be done with IPv4.
Rules have to be specified twice, once for IPv4 and once for IPv6, for
example:
- 22 until 22: 0.0.0.0/0
- 22 until 22: ::/0
Egress filtering works the same as with IPv4. When no rule is applied all
traffic is allowed. Otherwise only the specified traffic (with DNS being
the exception) is allowed.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
This commit implements basic Security Grouping for KVM in
Basic Networking.
It does not implement full Security Grouping yet, but it does:
- Prevent IP-Address source spoofing
- Allow DHCPv6 clients, but disallow DHCPv6 servers
- Disallow Instances to send out Router Advertisements
The Security Grouping allows ICMPv6 packets as described by RFC4890
as they are essential for IPv6 connectivity.
Following RFC4890 it allows:
- Router Solicitations
- Router Advertisements (incoming only)
- Neighbor Advertisements
- Neighbor Solicitations
- Packet Too Big
- Time Exceeded
- Destination Unreachable
- Parameter Problem
- Echo Request
ICMPv6 is a essential part of IPv6, without it connectivity will break or be very
unreliable.
For now it allows any UDP and TCP packet to be send in to the Instance which
effectively opens up the firewall completely.
Future commits will implement Security Grouping further which allows controlling UDP and TCP
ports for IPv6 like can be done with IPv4.
Regardless of the egress filtering (which can't be done yet) it will always allow outbound DNS
to port 53 over UDP or TCP.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
Use separate lvcreate command on XenServer7 hosts, that checks and passes
different parameters based on the xenserver release version.
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Allow DNS queries over TCP when egress filtering is configured.
When using DNSSEC more and more queries are done over TCP and this
requires 53/TCP to be allowed.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
more detailed error if host file not found or cannot be opened
using mkstemp and mkdtemp for improved security
improve resource cleanup in error conditions in unit test
As requested here: https://github.com/apache/cloudstack/pull/1495
No scripts are using perl so that install requirement can be removed.
The new scripts are using standard python packages only.
Includes extensive unit test.
kvm: Aqcuire lock when running security group Python scriptIt could happen that when multiple instances are starting at the same
time on a KVM host the Agent spawns multiple instances of security_group.py
which both try to modify iptables/ebtables rules.
This fails with on of the two processes failing.
The instance is still started, but it doesn't have any IP connectivity due
to the failed programming of the security groups.
This modification lets the script aqcuire a exclusive lock on a file so that
only one instance of the scripts talks to iptables/ebtables at once.
Other instances of the script which start will poll every 500ms if they can
obtain the lock and otherwise execute anyway after 15 seconds.
* pr/1408:
kvm: Aqcuire lock when running security group Python script
Signed-off-by: Will Stevens <williamstevens@gmail.com>
It could happen that when multiple instances are starting at the same
time on a KVM host the Agent spawns multiple instances of security_group.py
which both try to modify iptables/ebtables rules.
This fails with on of the two processes failing.
The instance is still started, but it doesn't have any IP connectivity due
to the failed programming of the security groups.
This modification lets the script aqcuire a exclusive lock on a file so that
only one instance of the scripts talks to iptables/ebtables at once.
Other instances of the script which start will poll every 500ms if they can
obtain the lock and otherwise execute anyway after 15 seconds.
The lock will be released as soon as the script exists, which is usually within
a few hundred ms.
* 4.7:
CLOUDSTACK-9172 Added cross zones check to delete template and iso
Check the existence of 'forceencap' parameter before use
systemvm: set default umask 022 in injectkeys.sh
The default umask of 0022 is set in Ubuntu and other packages. Set the same
in case of CentOS startup scripts. Use umask 022 in the injectkeys.sh script
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
This is a mandatory argument but it was NOT passed which caused the
re-programming of security groups to fail.
Simple fix to just add the argument since the variable is available
there.
* 4.6:
Revert "Change references of people.apache.org to home.apache.org in the test code"
Change references of people.apache.org to home.apache.org in the test code This closes#1123 Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-9077 Fix injectkeys.sh to work on CentOS7
CLOUDSTACK-9065: fix bug when creating packaging with noredist flag
The S3 implementation is far from finished, this commit focusses on the bases.
- Upgrade AWS SDK to latest version.
- Rewrite S3 Template downloader.
- Rewrite S3Utils utility class.
- Improve addImageStoreS3 API command.
- Split various classes for convenience.
- Various minor improvements and code optimalisations.
A side effect of the new AWS SDK is that it, by default, uses the V4 signature. Therefore I added an option to specify the Signer, so it stays compatible with previous versions.
CLOUDSTACK-9029: Proper support to identify CentOS 7 version numberhttps://issues.apache.org/jira/browse/CLOUDSTACK-9029
* pr/1033:
CLOUDSTACK-9029: Proper support to identify CentOS 7 version number
Signed-off-by: Remi Bergsma <github@remi.nl>
To configure firewall rules, CloudStack modifies `/etc/sysctl.conf` and
execute those modifications. This may be harmful for several reasons:
1. `/etc/sysctl.conf` may be managed by some configuration management
system. Such a system will constantly restore the previous version.
2. `/etc/sysctl.conf` may contain additional properties that have been
changed later by some system administrator (for example, once a
firewall has been configured, forwarding may have been activated
while it is disabled in `/etc/sysctl.conf`). Executing the file
again at a later time may disrupt the system.
3. Entries are added again and again. `/etc/sysctl.conf` will contain
the same directives repeated several times.
Using a configuration file is not needed as `sysctl` is able to directly
modify sysctl values with `-w` flag.
Signed-off-by: Vincent Bernat <Vincent.Bernat@exoscale.ch>
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.
