release v0.3.2

Author: yokawasa

CHANGELOG.md

@@ -2,13 +2,20 @@
 
 All notable changes to the "kubectl-plugin-ssh-jump" extension will be documented in this file.
 
+## 0.3.2
+
+- Changed a validation for destination name to support valid characters of hostname for SSH destination node that can start from ASCII letters 'a' through 'z' (in a case-insensitive manner), the digits '0' through '9', or the hyphen ('-'). Ref [RFC952](https://tools.ietf.org/html/rfc952) for valid characters of hostname.
+
 ## 0.3.1
+
 - fixed typo: missing char ( [PR#3](https://github.com/yokawasa/kubectl-plugin-ssh-jump/pull/3), thanks to @iuryfukuda )
 
 ## 0.3.0
+
 - Added Args param to exec in ssh session ( [PR#2](https://github.com/yokawasa/kubectl-plugin-ssh-jump/pull/2), thanks to @iuryfukuda )
 
 ## 0.2.0
+
 - Added -P|--port options for specifing SSH port that target node is listening (default 22)
 - Added -o "StrictHostKeyChecking=no" for ssh login options 
 - Changed the way to SSH login via SSH Jump Pod from using "-J" to using "ProxyCommand"

README.md

@@ -89,7 +89,10 @@ Usage:
   kubectl ssh-jump <dest_node> [options]
 
 Options:
-  <dest_node>                     Destination node IP
+  <dest_node>                     Destination node name or IP address
+                                  dest_node must start from the following letters:
+                                  ASCII letters 'a' through 'z' or 'A' through 'Z',
+                                  the digits '0' through '9', or hyphen ('-'
   -u, --user <sshuser>            SSH User name
   -i, --identity <identity_file>  Identity key file
   -p, --pubkey <pub_key_file>     Public key file
@@ -134,7 +137,10 @@ Usage:
   kubectl ssh-jump <dest_node> [options]
 
 Options:
-  <dest_node>                     Destination node IP
+  <dest_node>                     Destination node name or IP address
+                                  dest_node must start from the following letters:
+                                  ASCII letters 'a' through 'z' or 'A' through 'Z',
+                                  the digits '0' through '9', or hyphen ('-')
   -u, --user <sshuser>            SSH User name
   -i, --identity <identity_file>  Identity key file
   -p, --pubkey <pub_key_file>     Public key file
@@ -154,10 +160,11 @@ Example:
    ....
 
 List of destination node...
-Hostname
-aks-nodepool1-18558189-0
-aks-nodepool1-18558189-1
-aks-nodepool1-18558189-2
+Hostname                    Internal-IP
+aks-nodepool1-18558189-0    10.240.0.4
+aks-nodepool1-18558189-1    10.240.0.5
+aks-nodepool1-18558189-2    10.240.0.6
+
 ```
 
 Then, SSH into a node `aks-nodepool1-18558189-0` with options like:
@@ -168,6 +175,7 @@ Then, SSH into a node `aks-nodepool1-18558189-0` with options like:
 $ kubectl ssh-jump aks-nodepool1-18558189-0 \
   -u azureuser -i ~/.ssh/id_rsa_k8s -p ~/.ssh/id_rsa_k8s.pub
 ```
+> [NOTE] you can try SSH into a node using node IP address (`Internal-IP`) instead of `Hostname`
 
 As explained in usage secion, `username`, `identity`, `pubkey` options are cached, therefore you can omit these options afterward.
 

VERSION

@@ -1 +1 @@
-0.3.1
+0.3.2

kubectl-ssh-jump

@@ -21,7 +21,10 @@ help(){
 options(){
   cat <<"EOF"
 Options:
-  <dest_node>                     Destination node IP
+  <dest_node>                     Destination node name or IP address
+                                  dest_node must start from the following letters:
+                                  ASCII letters 'a' through 'z' or 'A' through 'Z',
+                                  the digits '0' through '9', or hyphen ('-')
   -u, --user <sshuser>            SSH User name
   -i, --identity <identity_file>  Identity key file
   -p, --pubkey <pub_key_file>     Public key file
@@ -65,7 +68,7 @@ EOF
 
 get_node_list(){
   echo "List of destination node..."
-  kubectl get no -o custom-columns=Hostname:.metadata.name
+  kubectl get no -o custom-columns=Hostname:.metadata.name,Internal-IP:'{.status.addresses[?(@.type=="InternalIP")].address}'
   echo ""
 }
 
@@ -138,7 +141,7 @@ run_ssh_node(){
   kubectl port-forward sshjump 2222:22 2>/dev/null &
   pid_port_forward=$!
   # Inject public SSH key to sshjump
-  cat ${pubkey} | kubectl exec -i sshjump -- /bin/bash -c "cat >> /root/.ssh/authorized_keys"
+  cat ${pubkey} | kubectl exec -i sshjump -- /bin/bash -c "cat > /root/.ssh/authorized_keys"
 
   # Using the SSH Server as a jumphost (via port-forward proxy), ssh into the desired Node
   ssh -i ${identity} -p ${port} ${sshuser}@${destnode} \
@@ -189,7 +192,7 @@ plugin_main() {
 	sshargs="$2"
 	nSkip=2
 	;;
-      [a-z]*)
+      [0-9a-zA-Z-]*)
 	destnode=$1
 	;;
       *)