weizhouapache commented on a change in pull request #5684:
URL: https://github.com/apache/cloudstack/pull/5684#discussion_r748201184



##########
File path: utils/src/main/java/com/cloud/utils/ssh/SSHCmdHelper.java
##########
@@ -77,8 +80,47 @@ public String getStdErr() {
     }
 
     public static com.trilead.ssh2.Connection 
acquireAuthorizedConnection(String ip, int port, String username, String 
password) {
+        return acquireAuthorizedConnection(ip, 22, username, password, null);
+    }
+
+    public static boolean acquireAuthorizedConnectionWithPublicKey(final 
com.trilead.ssh2.Connection sshConnection, final String username, final String 
privateKey) {
+        if (StringUtils.isNotBlank(privateKey)) {
+            File privateKeyFile = null;
+            try {
+                privateKeyFile = File.createTempFile("cloudstack-host-", null);
+                FileWriter writer = new 
FileWriter(privateKeyFile.getAbsolutePath());
+                writer.write(privateKey);
+                writer.close();

Review comment:
       @DaanHoogland 
   you are right. we could use `char[]`  instead of `File` in the 
authentication. i will change it.




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