# No up-and-running loopback addresses found

**URL:** https://discuss.elastic.co/t/no-up-and-running-loopback-addresses-found/67151
**Category:** Elasticsearch
**Created:** [November 25, 2016, 4:41am UTC](https://discuss.elastic.co/t/no-up-and-running-loopback-addresses-found/67151 "2016-11-25T04:41:10Z")
**Posts on this page:** 4
**Page:** 1

<div class="post-metadata">

### Author: ![alexus](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alexus/32/12696_2.png) [@alexus](https://discuss.elastic.co/u/alexus)
#### Post date: [November 25, 2016, 4:41am UTC](https://discuss.elastic.co/t/no-up-and-running-loopback-addresses-found/67151/1 "2016-11-25T04:41:10Z")

</div>

```
# uname -a
FreeBSD X 9.2-RELEASE-p17 FreeBSD 9.2-RELEASE-p17 #0 r282430: Mon May 4 13:59:58 PDT 2015 root@X:/usr/obj/usr/src/sys/R610 amd64
# grep -A1 ERROR /var/log/elasticsearch/elasticsearch.log 
[2016-11-24T23:28:17,797][ERROR][o.e.b.Bootstrap] [FCEKEaM] Exception
java.lang.IllegalArgumentException: No up-and-running loopback addresses found, got [name:bce0 (bce0)]
# ifconfig lo0
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
# pkg info elasticsearch5
elasticsearch5-5.0.0
Name : elasticsearch5
Version : 5.0.0
Installed on : Thu Nov 24 23:22:56 2016 EST
Origin : textproc/elasticsearch5
Architecture : freebsd:9:*
Prefix : /usr/local
Categories : devel java textproc
Licenses : APACHE20
Maintainer : tj@FreeBSD.org
WWW : http://www.elastic.co/
Comment : Full-text search engine for Java
Options :
	DOCS : on
Annotations :
	cpe : cpe:2.3:a:elasticsearch:elasticsearch:5.0.0:::::freebsd9:x64
	repo_type : binary
	repository : FreeBSD
Flat size : 34.9MiB
Description :
Elasticsearch aims to be a Distributed, RESTful, Search Engine built on top of
Apache Lucene.

WWW: http://www.elastic.co/
# 

```

Please advise.

---

<div class="post-metadata">

### Author: ![alexus](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alexus/32/12696_2.png) [@alexus](https://discuss.elastic.co/u/alexus)
#### Post date: [November 27, 2016, 5:00am UTC](https://discuss.elastic.co/t/no-up-and-running-loopback-addresses-found/67151/2 "2016-11-27T05:00:40Z")

</div>

I specified my IP address as _network.host_ in _elasticsearch.yml_:

```
# grep ^network.host elasticsearch.yml
network.host: 64.237.55.66
# 

```

I believe it passed that point, however it failed on another...

> [2016-11-26T23:54:20,084][ERROR][o.e.b.Bootstrap] [FCEKEaM] node validation exception  
> bootstrap checks failed initial heap size [1610612736] not equal to maximum heap size [25763512320]; this can cause resize pauses and prevents mlockall from locking the entire heap

Please advise.

---

<div class="post-metadata">

### Author: ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [November 27, 2016, 7:19am UTC](https://discuss.elastic.co/t/no-up-and-running-loopback-addresses-found/67151/3 "2016-11-27T07:19:28Z")

</div>

Read [https://www.elastic.co/guide/en/elasticsearch/reference/5.0/bootstrap-checks.html](https://www.elastic.co/guide/en/elasticsearch/reference/5.0/bootstrap-checks.html)

---

<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 25, 2016, 7:19am UTC](https://discuss.elastic.co/t/no-up-and-running-loopback-addresses-found/67151/4 "2016-12-25T07:19:41Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.