The initial value of NS of resolv.conf is 127.0.0.11, this
is the embedded NS of docker-compose. The disabling of
this feature is not currently supported by Docker.
On startup systemd-resolved caches the /etc/resolv.conf
(docker-compose version), which is later modified by
setup_containers.py script.
This results in resolving error occurs:
```console
[root@replica1 /]# getent ahosts master1.ipa.test
... can't resolve
[root@replica1 /]# grep 'hosts:' /etc/nsswitch.conf
hosts: files myhostname resolve [!UNAVAIL=return] dns
[root@replica1 /]# resolvectl status
Global
LLMNR setting: resolve
MulticastDNS setting: no
DNSOverTLS setting: no
DNSSEC setting: no
DNSSEC supported: no
Current DNS Server: 127.0.0.11
DNS Servers: 127.0.0.11
Fallback DNS Servers: 1.1.1.1
8.8.8.8
1.0.0.1
8.8.4.4
2606:4700:4700::1111
2001:4860:4860::8888
2606:4700:4700::1001
2001:4860:4860::8844
```
According to docs:
https://www.freedesktop.org/software/systemd/man/systemd-resolved.service.html#/etc/resolv.conf
our case is 4(managed by other packages).
So, restart of systemd-resolved is enough for its re-initialization,
but not for services that already received DNS results. To speed up
the overall process and to no restart each service which wants
internet connection(or wait until service retries connection)
systemd-resolved is masked.
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
This may speed up boot process.
For example, 'fedora:34' set graphical.target as default,
while multi-user one will be more appropriate.
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
FreeIPA uses git in its build process. In the past git was automatically
pulled in. On Fedora 33 builds are failing because git is missing.
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
`registry.fedoraproject.org/f32/fedora-toolbox` image is used to build
packages on Azure Pipelines.
registry.fedoraproject.org experiences an availability problem and makes
unstable FreeIPA CI.
Fedora also distributes its official images on https://hub.docker.com/_/fedora.
`fedora:32` is already used by FreeIPA CI to build the image for tests.
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Francois Cami <fcami@redhat.com>
Build container(image registry.fedoraproject.org/f32/fedora-toolbox)
has two more dnf repos enabled compared to Tests container(image
fedora:32). This results in the packages built within the Build
container can have dependencies which are unresolvable(missing)
within Tests container.
This enables updates-testing and updates-testing-modular,
disables fedora-cisco-openh264 for Tests container.
Fixes: https://pagure.io/freeipa/issue/8330
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Currently, only one IPA environment is tested within Docker
containers. This is not efficient because Azure's agent gives
6 GB of physical memory and 13 GB of total memory (Feb 2020),
but limits CPU with 2 cores.
Next examples are for 'master-only' topologies.
Let's assume that only one member of github repo simultaneously
run CI. This allows to get the full strength of Azure.
Concurrency results for TestInstallMaster:
------------------------------------------
| job concurrency | time/jobs |
------------------------------------------
| 5 | 40/5 |
| 4 | 34/4 |
| 3 | 25/3 |
| 2 | 19/2 |
| 1 | 17/1 |
------------------------------------------
Results prove the limitation of 2 cores. So, in case of jobs'
number not exceeds the max capacity for parallel jobs(10) the
proposed method couldn't save time, but it reduces the used
jobs number up to 2 times. In other words, in this case CI
could pass 2 x tests.
But what if CI was triggered by several PRs? or jobs' number is
bigger than 10. For example, there are 20 tests to be run.
Concurrency results for TestInstallMaster and 20 input jobs:
------------------------------------------------------------------
| job concurrency | time | jobs used | jobs free |
------------------------------------------------------------------
| 5 | 40 | 4 | 6 |
| 4 | 34 | 5 | 5 |
| 3 | 25 | 7 | 3 |
| 2 | 19 | 10 | 0 |
| 1 | 34 | 20 | 0 |
------------------------------------------------------------------
So, in this case the optimal concurrency would be 4 since it
allows to run two CIs simultaneously (20 tasks on board) and get
results in 34 minutes for both. In other words, two people could
trigger CI from PR and don't wait for each other.
New Azure IPA tests workflow:
+ 1) generate-matrix.py script generates JSON from user's YAML [0]
2) Azure generate jobs using Matrix strategy
3) each job is run in parallel (up to 10) within its own VM (Ubuntu-18.04):
a) downloads prepared Docker container image (artifact) from Azure cloud
(built on Build Job) and loads the received image into local pool
+ b) GNU 'parallel' launch each IPA environment in parallel:
+ 1) docker-compose creates the Docker environment having a required number
of replicas and/or clients
+ 2) setup_containers.py script does the needed container's changes (DNS,
SSH, etc.)
+ 3) launch IPA tests on tests' controller
c) publish tests results in JUnit format to provide a comprehensive test
reporting and analytics experience via Azure WebUI [1]
d) publish regular system logs as artifacts
[0]: https://docs.microsoft.com/en-us/azure/devops/pipelines/process/phases?view=azure-devops&tabs=yaml
Fixes: https://pagure.io/freeipa/issue/8202
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Stanislav Levin
Christian Heimes
Alexander Bokovoy