15+ دستورات Crictl با خروجی | اشکال زدایی گره های Kubernetes

user@k8s:$ crictl           
# to check before installs, it can be installed before
user@k8s:$ VERSION="v1.31.1"                                              
# desired version

user@k8s:$ wget https://github.com/kubernetes-sigs/cri-tools/releases/download/$VERSION/crictl-$VERSION-linux-amd64.tar.gz
user@k8s:$ sudo tar zxvf crictl-$VERSION-linux-amd64.tar.gz -C /usr/local/bin
user@k8s:$ rm -f crictl-$VERSION-linux-amd64.tar.gz

user@k8s:$ containerd      
# to check whether containerd runs

user@k8s:$ sudo nano /etc/crictl.yaml                                  
# on K8s node
# copy followings in it:
runtime-endpoint: unix:///var/run/containerd/containerd.sock
image-endpoint: unix:///var/run/containerd/containerd.sock
timeout: 10
debug: true

user@k8s:$ crictl info
{
  "status": {
   ....
}

user@k8s:$ crictl ps 
user@k8s:$ crictl ps -a 
# shows all containers, including stopped ones
CONTAINER  IMAGE    CREATE    STATE     NAME     ATTEMPT  POD ID    POD
603c2      c736ea  2mins ago  Running  kube-proxy    2      5237   kube-proxy-6d
user@k8s:$ crictl ps --name   
# filters by container name 
user@k8s:$ crictl ps --pod    
# filters containers by pod

user@k8s:$ crictl pods 
user@k8s:$ crictl pods -a               
# shows all pods, including exited ones 
user@k8s:$ crictl pods --name                     
# filters pods by name 
user@k8s:$ crictl pods --state              
# filters pods by state (e.g., `READY`, `NOTREADY`)

user@k8s:$ crictl images 
IMAGE                        TAG       IMAGE ID             SIZE
docker.io/calico/cni        v3.29.1   9dee260ef7f59        93.4MB
docker.io/calico/node       v3.29.1   8065b798a4d67        86.6MB
docker.io/library/busybox   latest    517b897a6a831        2.17MB
user@k8s:$ crictl images -q                   
# shows only image IDs
sha256:9dee260ef7f591241
sha256:8065b798a4d67147

user@k8s:$ crictl inspect  
user@k8s:$ crictl inspect --output json  
user@k8s:$ crictl inspect --output json 84a
# outputs in JSON format

user@k8s:$ crictl inspectp  
user@k8s:$ crictl inspectp --output json  
# outputs in JSON format

user@k8s:$ crictl inspecti 
# outputs in JSON format

user@k8s:$ cat sandbox-config.json
{    
       "metadata": {
               "name": "nginx-sandbox",
               "namespace": "default", 
               "attempt": 1,        
               "uid": "hdiabcd83djaidwnduwk28bcs"
        }, 
       "linux": {
        }
}

user@k8s:$ crictl runp sandbox-config.json
9dd36b72d2fa3d4af8ba98d5f7812577fc175a37b10dc82
user@k8s:$ crictl pods
PODSANDBOXID  CREATED   STATE    NAME        NAMESPACE    ATTEMPT 
9dd36b        1min ago  READY  nginx-sandbox  default        1
user@k8s:$ crictl inspectp 9dd3  
# displays information about the pod and the pod sandbox pause container.

user@k8s:$ cat container-config.json
{  
       "metadata": {
              "name": "busybox"
        }, 
       "image":{
             "image": "busybox"
        },
       "command": [
              "top"  
       ],  
      "linux": { 
       }
}

user@k8s:$ crictl create 9dd3 container-config.json sandbox-config.json
6a3850bb7ed37f2acaaeaee07d2ba143ee4cea7e3
user@k8s:$  crictl ps -a
CONTAINERID  IMAGE     CREATED     STATE      NAME        ATTEMPT            
6a385       busybox   2 mins ago   CREATED    busybox        0

user@k8s:$ crictl start 6a3850bb7ed37f2acaaeaee07d2ba143ee4cea7e3
user@k8s:$ crictl ps
CONTAINERID   IMAGE     CREATED    STATE       NAME        ATTEMPT
0a2c7613     busybox   1 min ago   RUNNING    busybox         0        
user@k8s:$ crictl inspect 6a385  
# show detailed information about the container

user@k8s:$ crictl stop  
user@k8s:$ crictl stop  --timeout 30 
# stops container with a timeout in seconds
user@k8s:$ crictl stop 6a3
DEBU[0000] get runtime connection
6a3

user@k8s:$ crictl rm 
# container removed
user@k8s:$ crictl rm 6a3
DEBU[0000] get runtime connection
6a3

user@k8s:$ crictl pull  
user@k8s:$ crictl pull : 
# pulls a specific tag of an image
user@k8s:$ crictl pull busybox
Image is up to date for sha256:517b897a6a8312ce202a85c

user@k8s:$ crictl rmi  
user@k8s:$ crictl rmi  
# removes image by name instead of ID
user@k8s:$ crictl rmi 517
DEBU[0000] get image connection
DEBU[0000] User specified image to be removed: 517
Deleted: docker.io/library/busybox:latest

user@k8s:$ crictl stopp 
user@k8s:$ crictl stopp 9d7
DEBU[0000] get runtime connection
Stopped sandbox 9d7

user@k8s:$ crictl rmp 
user@k8s:$ Removed sandbox b00
DEBU[0000] get runtime connection
Removed sandbox b00

user@k8s:$ crictl logs  
user@k8s:$ crictl logs -f  
# follows logs in real-time 
user@k8s:$ crictl logs --tail 10  
# shows last 10 log lines

user@k8s:$ crictl stats 
CONTAINER        CPU      % MEM      DISK       INODES
0a2c761303163f   0.00     983kB     16.38kB       6
user@k8s:$ crictl stats  
# shows stats for a specific container

user@k8s:$ crictl exec  <command> 
user@k8s:$ crictl exec -it  <command> 
# interactive mode with a TTY
user@k8s:$ crictl exec -i -t 0a2c ls
bin   dev   etc   home  proc  root  sys   tmp   usr   var