Unable to install plugin for elasticsearch 2.3.3

cat /proc/version

Linux version 4.4.19-29.55.amzn1.x86_64 (mockbuild@gobi-build-64012) (gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) ) #1 SMP Mon Aug 29 23:29:40 UTC 2016

curl localhost:9200

{
  "name" : "Shamrock",
  "cluster_name" : "elasticsearch",
  "version" : {
    "number" : "2.3.3",
    "build_hash" : "218bdf10790eef486ff2c41a3df5cfa32dadcfde",
    "build_timestamp" : "2016-05-17T15:40:04Z",
    "build_snapshot" : false,
    "lucene_version" : "5.5.0"
  },
  "tagline" : "You Know, for Search"
}

java -version

java version "1.7.0_111"
OpenJDK Runtime Environment (amzn-2.6.7.2.68.amzn1-x86_64 u111-b01)
OpenJDK 64-Bit Server VM (build 24.111-b01, mixed mode)

sudo bin/plugin install com.petalmd/armor/2.3.3

-> Installing com.petalmd/armor/2.3.3...
Trying https://download.elastic.co/com.petalmd/armor/armor-2.3.3.zip ...
Trying https://search.maven.org/remotecontent?filepath=com/petalmd/armor/2.3.3/armor-2.3.3.zip ...
Trying https://oss.sonatype.org/service/local/repositories/releases/content/com/petalmd/armor/2.3.3/armor-2.3.3.zip ...
Trying https://github.com/com.petalmd/armor/archive/2.3.3.zip ...
Trying https://github.com/com.petalmd/armor/archive/master.zip ...
ERROR: failed to download out of all possible locations..., use --verbose to get detailed information

petalmd / armor

Unable to install plugin for elasticsearch 2.3.3 #19