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kubernetes scale与rollout区别

发布时间 2023-04-19 09:46:29作者: 若-飞

1. scale

如果当前replicas与scale的 replicas一致，不会有任何操作

zhancj@iZbp10j40ovkbwx9an9ppuZ:~$ sudo kubectl scale deploy sport --replicas=3
deployment.apps/sport scaled
zhancj@iZbp10j40ovkbwx9an9ppuZ:~$ sudo kubectl get pods -l app=sport -w
NAME                     READY   STATUS    RESTARTS   AGE
sport-55b68966c8-4wdd4   1/1     Running   26         27d
sport-55b68966c8-dct5g   1/1     Running   30         27d
sport-55b68966c8-k7tfl   1/1     Running   30         27d
^Czhancj@iZbp10j40ovkbwx9an9ppuZ:~$ sudo kubectl get pods -l app=sport -w
NAME                     READY   STATUS    RESTARTS   AGE
sport-55b68966c8-4wdd4   1/1     Running   26         27d
sport-55b68966c8-dct5g   1/1     Running   30         27d
sport-55b68966c8-k7tfl   1/1     Running   30         27d

2. rollout restart

不论当前replicas，都会根据最新的deployment进行重启

qiteck@server:~$ sudo kubectl get pods -l app=sport
NAME                     READY   STATUS    RESTARTS   AGE
sport-58df755f85-84sgk   1/1     Running   0          50d
sport-58df755f85-q7n7z   1/1     Running   0          50d
qiteck@server:~$
qiteck@server:~$ sudo kubectl rollout restart deployment sport
deployment.apps/sport restarted
qiteck@server:~$ sudo kubectl get pods -l app=sport -w
NAME                     READY   STATUS     RESTARTS   AGE
sport-58df755f85-84sgk   1/1     Running    0          50d
sport-58df755f85-q7n7z   1/1     Running    0          50d
sport-5f748975cc-d496r   0/2     Init:0/1   0          3s
sport-5f748975cc-d496r   0/2     PodInitializing   0          3s
sport-5f748975cc-d496r   0/2     Running           0          7s
sport-5f748975cc-d496r   0/2     Error             0          8s
sport-5f748975cc-d496r   0/2     Running           1 (1s ago)   9s
sport-5f748975cc-d496r   1/2     Running           1 (2s ago)   10s
sport-5f748975cc-d496r   2/2     Running           1 (33s ago)   41s
sport-58df755f85-84sgk   1/1     Terminating       0             50d
sport-5f748975cc-58h7h   0/2     Pending           0             0s
sport-5f748975cc-58h7h   0/2     Pending           0             0s
sport-5f748975cc-58h7h   0/2     Init:0/1          0             0s
sport-58df755f85-84sgk   0/1     Terminating       0             50d
sport-58df755f85-84sgk   0/1     Terminating       0             50d
sport-58df755f85-84sgk   0/1     Terminating       0             50d
sport-5f748975cc-58h7h   0/2     PodInitializing   0             3s
sport-5f748975cc-58h7h   0/2     Running           0             5s
sport-5f748975cc-58h7h   0/2     Error             0             6s
sport-5f748975cc-58h7h   0/2     Running           1 (3s ago)    7s
sport-5f748975cc-58h7h   0/2     Error             1 (4s ago)    8s
sport-5f748975cc-58h7h   0/2     CrashLoopBackOff   1 (2s ago)    9s
sport-5f748975cc-58h7h   1/2     CrashLoopBackOff   1 (4s ago)    11s
sport-5f748975cc-58h7h   1/2     Running            2 (19s ago)   26s
sport-5f748975cc-58h7h   2/2     Running            2 (54s ago)   61s
sport-58df755f85-q7n7z   1/1     Terminating        0             50d
sport-58df755f85-q7n7z   0/1     Terminating        0             50d
sport-58df755f85-q7n7z   0/1     Terminating        0             50d
sport-58df755f85-q7n7z   0/1     Terminating        0             50d