- Push retry-forever wrapping to curl invocations.
- Collect curl retry flags into a single variable.
- Remove 'sudo: false' in master.yaml, is unnecessary and breaks older
cloud-init versions.
- Change log-error status reason to be more accurate.
- Fix the some 'python' invocations to 'python3'.
- Add log functions to facilitate debug logging.
- Wrap commands called in main with debug logging.
- Configure a systemd service to forward the logs to the serial port.
- Add a 'retry-forever' function to harden download steps.
- Add default value support to 'get-metadata-value' function.
- Fix some spellcheck lints.
An etcd unix user is currently created in configure-helper.sh if it does not exist
on the master.
cloud-init is the only supported mechanism to add users on COS VMs. If an attempt
is made to add a key using OS Login or the instance metadata mechanism the
google_accounts_daemon will race with useradd and potentially attempt to use
the same UID. This will lock out any attempt to SSH into the VM. We therefore
migrate to using cloud-init to create this user and prevent this issue from occurring.
This PR is to modify the containerized mounter script to use chroot
instead of rkt fly. This will avoid the problem of possible large number
of mounts caused by rkt containers if they are not cleaned up.
Prior to this change, configure.sh would:
(1) compare versions of built-in kubelet and downloaded kubelet, and
(2) bind-mount downloaded kubelet at /usr/bin/kubelet in case of
version mismatch
With this change, configure.sh:
(1) compares the two versions only on test clusters, and
(2) uses the actual file paths to start kubelet w/o any bind-mounting
To allow (2), this change also provides its own version of kubelet
systemd service file.
Effectively with this change we will always use the downloaded kubelet
binary along with its own systemd service file on non-test clusters. The
main advantage is this change does not rely on the kubelet being built in to
the OS image.
