curl command failing

[#1]

my rest server is up and running and the following command works

[root@hadoop1 ~]# curl --negotiate -u : 'http://hadoop1:17001/status/cluster'
1 live servers, 0 dead servers, 6.0000 average load
1 live servers
    hadoop5.xxx.com:16020 1530282635984
        requests=0, regions=6
        heapSizeMB=145
        maxHeapSizeMB=2007

but the other curl commands are failing with authentication error . I have a Kerberos ticket acquired from

/etc/security/keytabs/hbase.service.keytab

[root@hadoop1 ~]# curl -H "Accept: text/xml" http://hadoop1:17001/version
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 401 Authentication required</title>
</head>
<body><h2>HTTP ERROR 401</h2>
<p>Problem accessing /version. Reason:
<pre>    Authentication required</pre></p><hr /><i><small>Powered by Jetty://</small></i><br/>                                           
<br/>

[#2]

also this command works

# curl --negotiate -i -u : -X GET -H "Accept: text/xml" http://$(hostname):17001/
HTTP/1.1 401 Authentication required
WWW-Authenticate: Negotiate
Set-Cookie: hadoop.auth=; Path=/; HttpOnly
Content-Type: text/html; charset=iso-8859-1
Cache-Control: must-revalidate,no-cache,no-store
Content-Length: 1393
HTTP/1.1 200 OK
Set-Cookie: hadoop.auth="u=hbase&p=hbase/[email protected]&t=kerberos&e=1530321348642&s=D797P7EN3+vVCB0S2WblChieQrs="; Path=/; HttpOnly
Content-Type: text/xml
Cache-Control: no-cache
Content-Length: 141
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><TableList><table name="UFM"/><table name="WZ"/><table name="state_code"/></TableList>[root@hadoop1 ~]#

but this command fails

# curl -H "Accept: text/xml" http://$(hostname):17001/
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 401 Authentication required</title>
</head>
<body><h2>HTTP ERROR 401</h2>
<p>Problem accessing /. Reason:
<pre>    Authentication required</pre></p><hr /><i><small>Powered by Jetty://</small></i><br/>                                           
<br/>