Initialize global variable MINION_IPS in setClusterInfo function.
MINION_IPS is defined as a global variable, and is concatenated with other nodeIP.
When setClusterInfo is called for many times, this could cause potential problems.
Such as, you will have MINION_IPS=192.168.0.2,192.168.0.3,192.168.0.2,192.168.0.3 which is obviously wrong.
Update util.sh
separated from the apiserver running locally on the master node so that it
can be optionally enabled or disabled as needed.
Also, fix the healthchecking configuration for the master components, which
was previously only working by coincidence:
If a kubelet doesn't register with a master, it never bothers to figure out
what its local address is. In which case it ends up constructing a URL like
http://:8080/healthz for the http probe. This happens to work on the master
because all of the pods are using host networking and explicitly binding to
127.0.0.1. Once the kubelet is registered with the master and it determines
the local node address, it tries to healthcheck on an address where the pod
isn't listening and the kubelet periodically restarts each master component
when the liveness probe fails.
When deploying the kubernetes using Ubuntu's script, the value of configuration item `DOCKER_OPTS` is not set to `/etc/default/docker`.
This commit is to fix this bug.
Currently make-ca-cert.sh uses (equiv of)
mktemp -d --tmpdir kube.XXXXX
but --tmpdir is not a valid option on OS X. Switch to
mktemp -d -t kube.XXXXX
Which is valid, but subtly different between OS X and Linux. The
directory you get back will be different on each.
Linux: ${tmpdir}/kube.y5Bsu/
OS X: ${tmpdir}/kube.XXXXX.VQ81oOui/
Instead of hard coding kube-cert and /srv/kubernetes allow these to be
overwritten by environment variables. / is immutable on some systems
and so /srv is not a possible location to store data.
Not every cluster can be validated the same way. Factoring out the
validate-cluster call into a kube-util.sh function allows customization.
This allows to proceed with GoogleCloudPlatform/kubernetes#10049 before
the mid/long-term unified cluster validation in GoogleCloudPlatform/kubernetes#11908
is implemented. Otherwise, the later blocks the former.
Ed Costello