I used SearchGuard to encrypt nodes in ElasticSearch cluster
Master:
cluster.name: client1
searchguard.enterprise_modules_enabled: false
node.name: ekl.test.com
node.master: true
node.data: true
node.ingest: true
network.host: 0.0.0.0
#http.host: 0.0.0.0
network.publish_host: ["ekl1.test1.com","ekl.test.com"]
http.port: 9200
discovery.zen.ping.unicast.hosts: ["ekl.test.com", "ekl1.test1.com"]
discovery.zen.minimum_master_nodes: 1
xpack.security.enabled: false
searchguard.ssl.transport.pemcert_filepath: '/etc/elasticsearch/ssl/node1.pem'
searchguard.ssl.transport.pemkey_filepath: 'ssl/node1.key'
searchguard.ssl.transport.pemtrustedcas_filepath: '/etc/elasticsearch/ssl/root-ca.pem'
searchguard.ssl.transport.enforce_hostname_verification: false
searchguard.ssl.transport.resolve_hostname: false
searchguard.ssl.http.enabled: true
searchguard.ssl.http.pemcert_filepath: '/etc/elasticsearch/ssl/node1_http.pem'
searchguard.ssl.http.pemkey_filepath: '/etc/elasticsearch/ssl/node1_http.key'
searchguard.ssl.http.pemtrustedcas_filepath: '/etc/elasticsearch/ssl/root-ca.pem'
searchguard.nodes_dn:
- CN=ekl.test.com,OU=Ops,O=BugBear BG\, Ltd.,DC=BugBear,DC=com
- CN=ekl1,test1.com,OU=Ops,O=BugBear BG\, Ltd.,DC=BugBear,DC=com
searchguard.authcz.admin_dn:
- CN=admin.test.com,OU=Ops,O=BugBear Com\, Inc.,DC=example,DC=com
Node:
cluster.name: client1
searchguard.enterprise_modules_enabled: false
node.name: ekl1.test.com
node.master: false
node.data: true
node.ingest: false
network.host: 0.0.0.0
#http.host: 0.0.0.0
network.publish_host: ["ekl1.test1.com","ekl.test.com"]
http.port: 9200
discovery.zen.ping.unicast.hosts: ["ekl.test.com", "ekl1.test1.com"]
discovery.zen.minimum_master_nodes: 1
xpack.security.enabled: false
searchguard.ssl.transport.pemcert_filepath: '/etc/elasticsearch/ssl/node2.pem'
searchguard.ssl.transport.pemkey_filepath: 'ssl/node2.key'
searchguard.ssl.transport.pemtrustedcas_filepath: '/etc/elasticsearch/ssl/root-ca.pem'
searchguard.ssl.transport.enforce_hostname_verification: false
searchguard.ssl.transport.resolve_hostname: false
searchguard.ssl.http.enabled: true
searchguard.ssl.http.pemcert_filepath: '/etc/elasticsearch/ssl/node2_http.pem'
searchguard.ssl.http.pemkey_filepath: '/etc/elasticsearch/ssl/node2_http.key'
searchguard.ssl.http.pemtrustedcas_filepath: '/etc/elasticsearch/ssl/root-ca.pem'
searchguard.nodes_dn:
- CN=ekl.test.com,OU=Ops,O=BugBear BG\, Ltd.,DC=BugBear,DC=com
- CN=ekl1.test1.com,OU=Ops,O=BugBear BG\, Ltd.,DC=BugBear,DC=com
searchguard.authcz.admin_dn:
- CN=admin.test.com,OU=Ops,O=BugBear Com\, Inc.,DC=example,DC=com
Certificates are self-signed
From node i can telnet to ports 9200/9300 by hostnames
curl -kvX GET "https://admin:pass@ekl.test.com:9200" works fine
Errors on node:
[ekl1.test1.com] not enough master nodes discovered during pinging (found [], but needed [1]), pinging again
ES Config path is /etc/elasticsearch [2019-03-28T21:25:56,450][INFO ][c.f.s.s.DefaultSearchGuardKeyStore] >[ekl1.test1.com] OpenSSL not available (this is not an error, we simply >fallback to built-in JDK SSL) because of java.lang.ClassNotFoundException: >io.netty.internal.tcnative.SSL
Both server names are correct