• 效果

[root@node1 script]# ./pod_node_labels.sh fluentd node_label_key
fluentd-fluentd-elasticsearch-955wc node25 ali-test
fluentd-fluentd-elasticsearch-bhfr5 node22 ali-test
fluentd-fluentd-elasticsearch-lcc44 node20 ali-test
fluentd-fluentd-elasticsearch-lnfdq node21 package
fluentd-fluentd-elasticsearch-t4nt8 node17 ali-test
fluentd-fluentd-elasticsearch-5fhxd node30 ali-test
fluentd-fluentd-elasticsearch-5qk48 node29 ali-test
fluentd-fluentd-elasticsearch-7t7h4 node32 ali-test

• 脚本

#!/bin/sh
# $1 is namespace name
pod=`kubectl get po -n $1 -o wide |awk '{print $1,$7}'|grep -v NODE`

# $2 is label key
nodelabels=`kubectl get node -L $2|grep -v NAME|awk '{print $1,$6}'`

echo ""|awk -v pod="$pod" -v nodelabels="$nodelabels" '
 BEGIN{printf "%-10s%-10s%-10s\n","pod名称","k8s节点","k8s标签"}

 {
  split(nodelabels, nodelabelsarr, "\n")
  for(i in nodelabelsarr){ 
    split(nodelabelsarr[i], node_label)
    if(node_label[2]!=""){
      node_labels[node_label[1]]=node_label[2]
    }
  }
  
  split(pod, podarr, "\n");
  for(j in podarr){
   for(k in node_labels){
     if(match(podarr[j],k)){
       print podarr[j],node_labels[k];
     } 
   } 
  }
 }'