deploy-and-test.sh

#!/bin/bash

kapp deploy -c -y -a kdemo -f app.yaml

trap 'kill $(jobs -p)' EXIT

kubectl port-forward deploy/kdemo 8080:8080 &
sleep 2

curl http://localhost:8080

output.log

$ ./deploy-and-test.sh
Target cluster 'https://kubernetes.docker.internal:6443' (nodes: docker-desktop)

--- update deployment/kdemo (apps/v1) namespace: default
  ...
 35, 35             value: Knot8
 36     -         image: mkmik/kdemo-cbce88c499ad59d7a42a0d7bcf9456f0@sha256:7948845e3f467e25e9b9a2fcbc0272e33c4c89e0e53bc51c0eb309d0aff6b9b2
     36 +         image: mkmik/kdemo-cbce88c499ad59d7a42a0d7bcf9456f0@sha256:d83bd9db79f5bb9926c5b27c8ddee0ef91c46d68a1909a23310d4f1142d08279
 37, 37           name: app
 38, 38           ports:

Changes

Namespace  Name   Kind        Conds.  Age  Op      Wait to    Rs  Ri
default    kdemo  Deployment  2/2 t   4h   update  reconcile  ok  -

Op:      0 create, 0 delete, 1 update, 0 noop
Wait to: 1 reconcile, 0 delete, 0 noop

11:23:13PM: ---- applying 1 changes [0/1 done] ----
11:23:13PM: update deployment/kdemo (apps/v1) namespace: default
11:23:13PM: ---- waiting on 1 changes [0/1 done] ----
11:23:14PM: ongoing: reconcile deployment/kdemo (apps/v1) namespace: default
11:23:14PM:  ^ Waiting for generation 14 to be observed
11:23:14PM:  L ok: waiting on replicaset/kdemo-7f465cf6cb (apps/v1) namespace: default
11:23:14PM:  L ok: waiting on replicaset/kdemo-6d589f8dc8 (apps/v1) namespace: default
11:23:14PM:  L ok: waiting on replicaset/kdemo-5bf588468d (apps/v1) namespace: default
11:23:14PM:  L ok: waiting on replicaset/kdemo-59d4bcccbc (apps/v1) namespace: default
11:23:14PM:  L ok: waiting on pod/kdemo-7f465cf6cb-q7r28 (v1) namespace: default
11:23:14PM:  L ok: waiting on pod/kdemo-7f465cf6cb-mqq88 (v1) namespace: default
11:23:14PM:  L ok: waiting on pod/kdemo-7f465cf6cb-cd2pl (v1) namespace: default
11:23:14PM:  L ongoing: waiting on pod/kdemo-59d4bcccbc-n8lmw (v1) namespace: default
11:23:14PM:     ^ Pending
11:23:15PM: ok: reconcile deployment/kdemo (apps/v1) namespace: default
11:23:15PM: ---- applying complete [1/1 done] ----
11:23:15PM: ---- waiting complete [1/1 done] ----

Succeeded
Forwarding from 127.0.0.1:8080 -> 8080
Forwarding from [::1]:8080 -> 8080
Handling connection for 8080
I now say: Hello, Knot8!   #<--------------------------------------- old POD!!!!

$ ./deploy-and-test.sh
Target cluster 'https://kubernetes.docker.internal:6443' (nodes: docker-desktop)

Changes

Namespace  Name  Kind  Conds.  Age  Op  Wait to  Rs  Ri

Op:      0 create, 0 delete, 0 update, 0 noop
Wait to: 0 reconcile, 0 delete, 0 noop

Succeeded
Forwarding from 127.0.0.1:8080 -> 8080
Forwarding from [::1]:8080 -> 8080
Handling connection for 8080
Hello, Knot8!  #<---------------- new pod