# Curl: (7) Failed connect to localhost:9200; **URL:** \ **Category:** Elasticsearch\ **Created:** [May 21, 2019, 3:14pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044 "2019-05-21T15:14:54Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![Light](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/light/32/46564_2.png) [@Light](https://discuss.elastic.co/u/Light)\ **Post date:** [May 21, 2019, 3:14pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/1 "2019-05-21T15:14:54Z")
Hello, I'm new here, and not too skilled with programming/setting up tools on servers either. I'm trying to install ElasticSearch on my CentOS7 server. I followed the istructions from [this](https://linuxize.com/post/how-to-install-elasticsearch-on-centos-7/) website, exactly as they are written, and everything seemed to work fine, until I made a connection test with the curl -X GET command and the :9200 port. I added some parameters I found on [this](https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-logstash-and-kibana-elastic-stack-on-centos-7) other tutorial. [Here](https://pastebin.com/7C5SpCXE) is my etc/elasticsearch/elasticsearch.yml configuration file. And this is what I get when I try to restart and do a connection test to the port :9200 ``` [root@localhost elasticsearch]# sudo service elasticsearch restart Restarting elasticsearch (via systemctl): [OK] [root@localhost elasticsearch]# curl -X GET 'http://localhost:9200' curl: (7) Failed connect to localhost:9200; Connessione rifiutata [root@localhostelasticsearch]# ``` And what I set for the firewall, using the local IP address of the server. ``` sudo firewall-cmd --new-zone=elasticsearch --permanent sudo firewall-cmd --reload sudo firewall-cmd --zone=elasticsearch --add-source=10.150.2.3 --permanent sudo firewall-cmd --zone=elasticsearch --add-port=9200/tcp --permanent sudo firewall-cmd --reload ``` Any idea about what could be wrong? Thanks in advance! ---
**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:** [May 21, 2019, 3:29pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/2 "2019-05-21T15:29:19Z")
Can you share elasticsearch logs please? Please don't post images of text as they are hardly readable and not searchable. Instead paste the text and format it with `` icon. Check the preview window. ---
**Author:** ![Light](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/light/32/46564_2.png) [@Light](https://discuss.elastic.co/u/Light)\ **Post date:** [May 21, 2019, 3:45pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/3 "2019-05-21T15:45:55Z")
I will... I found the folder containing the logs, which ones do you need? There is a list of them. ``` [root@localhost elasticsearch]# ls elasticsearch_access.log my-application_access.log elasticsearch_audit.log my-application_audit.log elasticsearch_deprecation.log my-application_deprecation.log elasticsearch_index_indexing_slowlog.log my-application_index_indexing_slowlog.log elasticsearch_index_search_slowlog.log my-application_index_search_slowlog.log elasticsearch.log my-application.log gc.log.0.current ``` ---
**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:** [May 21, 2019, 4:00pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/4 "2019-05-21T16:00:28Z")
`elasticsearch.log` ---
**Author:** ![Light](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/light/32/46564_2.png) [@Light](https://discuss.elastic.co/u/Light)\ **Post date:** [May 21, 2019, 4:01pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/5 "2019-05-21T16:01:42Z")
Alright! Sadly, I can't share it all here because of the characters limit... so [here](https://pastebin.com/1g1ey4PU) is a pastebin. ---
**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:** [May 21, 2019, 9:55pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/6 "2019-05-21T21:55:27Z")
Could you run: ``` curl 10.150.2.3:9200 ``` ---
**Author:** ![Light](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/light/32/46564_2.png) [@Light](https://discuss.elastic.co/u/Light)\ **Post date:** [May 22, 2019, 7:48am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/7 "2019-05-22T07:48:44Z")
``` [genomica@localhost ~]$ sudo systemctl enable elasticsearch.service [genomica@localhost ~]$ sudo systemctl start elasticsearch.service [genomica@localhost ~]$ sudo systemctl restart elasticsearch [genomica@localhost ~]$ curl 10.150.2.3:9200 curl: (7) Failed connect to 10.150.2.3:9200; Connessione rifiutata [genomica@localhost ~]$ ``` Could it be anything firewall related? ---
**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:** [May 22, 2019, 9:24am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/8 "2019-05-22T09:24:26Z")
May be. What are the last logs? ---
**Author:** ![Light](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/light/32/46564_2.png) [@Light](https://discuss.elastic.co/u/Light)\ **Post date:** [May 22, 2019, 10:17am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/9 "2019-05-22T10:17:15Z")
They didn't seem to have changed since yesterday (the last editing date is yesterday, indeed), but I'm attaching [them](https://pastebin.com/MUKpynW8) anyways: There is also a [gc.log.0.current](https://pastebin.com/EW6EU8CY) file which seems to have been edited today and I'm attaching too. ---
**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:** [May 22, 2019, 2:04pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/10 "2019-05-22T14:04:04Z")
So the logs are: ```auto [2019-05-21T16:37:31,416][INFO][o.e.e.NodeEnvironment] [lYWaGy6] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [38.2gb], net total_space [49.9gb], types [rootfs] [2019-05-21T16:37:31,420][INFO][o.e.e.NodeEnvironment] [lYWaGy6] heap size [989.8mb], compressed ordinary object pointers [true] [2019-05-21T16:37:31,430][INFO][o.e.n.Node] [lYWaGy6] node name derived from node ID [lYWaGy6oQsaEQcgAyxSFFw]; set [node.name] to override [2019-05-21T16:37:31,430][INFO][o.e.n.Node] [lYWaGy6] version[6.8.0], pid[90851], build[default/rpm/65b6179/2019-05-15T20:06:13.172855Z], OS[Linux/3.10.0-957.10.1.el7.x86_64/amd64], JVM[Oracle Corporation/OpenJDK 64-Bit Server VM/1.8.0_212/25.212-b04] [2019-05-21T16:37:31,430][INFO][o.e.n.Node] [lYWaGy6] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -Des.networkaddress.cache.ttl=60, -Des.networkaddress.cache.negative.ttl=10, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Djava.io.tmpdir=/tmp/elasticsearch-4704341660773096082, -XX:+HeapDumpOnOutOfMemoryError, -XX:HeapDumpPath=/var/lib/elasticsearch, -XX:ErrorFile=/var/log/elasticsearch/hs_err_pid%p.log, -XX:+PrintGCDetails, -XX:+PrintGCDateStamps, -XX:+PrintTenuringDistribution, -XX:+PrintGCApplicationStoppedTime, -Xloggc:/var/log/elasticsearch/gc.log, -XX:+UseGCLogFileRotation, -XX:NumberOfGCLogFiles=32, -XX:GCLogFileSize=64m, -Des.path.home=/usr/share/elasticsearch, -Des.path.conf=/etc/elasticsearch, -Des.distribution.flavor=default, -Des.distribution.type=rpm] ... [2019-05-21T16:37:35,951][INFO][o.e.x.s.a.s.FileRolesStore] [lYWaGy6] parsed [0] roles from file [/etc/elasticsearch/roles.yml] [2019-05-21T16:37:36,592][INFO][o.e.x.m.p.l.CppLogMessageHandler] [lYWaGy6] [controller/91239] [Main.cc@109] controller (64 bit): Version 6.8.0 (Build e6cf25e2acc5ec) Copyright (c) 2019 Elasticsearch BV [2019-05-21T16:37:37,030][DEBUG][o.e.a.ActionModule] [lYWaGy6] Using REST wrapper from plugin org.elasticsearch.xpack.security.Security [2019-05-21T16:37:37,227][INFO][o.e.d.DiscoveryModule] [lYWaGy6] using discovery type [zen] and host providers [settings] [2019-05-21T16:37:37,946][INFO][o.e.n.Node] [lYWaGy6] initialized [2019-05-21T16:37:37,947][INFO][o.e.n.Node] [lYWaGy6] starting ... [2019-05-21T16:37:38,107][INFO][o.e.t.TransportService] [lYWaGy6] publish_address {10.150.2.3:9300}, bound_addresses {[::]:9300} [2019-05-21T16:37:38,128][INFO][o.e.b.BootstrapChecks] [lYWaGy6] bound or publishing to a non-loopback address, enforcing bootstrap checks [2019-05-21T16:37:41,221][INFO][o.e.c.s.MasterService] [lYWaGy6] zen-disco-elected-as-master ([0] nodes joined), reason: new_master {lYWaGy6}{lYWaGy6oQsaEQcgAyxSFFw}{QirsHidvTIabVaH82WLuww}{10.150.2.3}{10.150.2.3:9300}{ml.machine_memory=269954039808, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true} [2019-05-21T16:37:41,240][INFO][o.e.c.s.ClusterApplierService] [lYWaGy6] new_master {lYWaGy6}{lYWaGy6oQsaEQcgAyxSFFw}{QirsHidvTIabVaH82WLuww}{10.150.2.3}{10.150.2.3:9300}{ml.machine_memory=269954039808, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true}, reason: apply cluster state (from master [master {lYWaGy6}{lYWaGy6oQsaEQcgAyxSFFw}{QirsHidvTIabVaH82WLuww}{10.150.2.3}{10.150.2.3:9300}{ml.machine_memory=269954039808, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true} committed version [1] source [zen-disco-elected-as-master ([0] nodes joined)]]) [2019-05-21T16:37:41,321][INFO][o.e.h.n.Netty4HttpServerTransport] [lYWaGy6] publish_address {10.150.2.3:9200}, bound_addresses {[::]:9200} [2019-05-21T16:37:41,322][INFO][o.e.n.Node] [lYWaGy6] started [2019-05-21T16:37:41,652][WARN][o.e.x.s.a.s.m.NativeRoleMappingStore] [lYWaGy6] Failed to clear cache for realms [[]] [2019-05-21T16:37:41,697][INFO][o.e.l.LicenseService] [lYWaGy6] license [b0e46bca-dda0-4aea-af32-10693aab36f0] mode [basic] - valid [2019-05-21T16:37:41,704][INFO][o.e.g.GatewayService] [lYWaGy6] recovered [1] indices into cluster_state [2019-05-21T16:37:42,113][INFO][o.e.c.r.a.AllocationService] [lYWaGy6] Cluster health status changed from [RED] to [YELLOW] (reason: [shards started [[gene][1]] ...]). [2019-05-21T16:47:35,397][INFO][o.e.n.Node] [lYWaGy6] stopping ... [2019-05-21T16:47:35,480][INFO][o.e.x.w.WatcherService] [lYWaGy6] stopping watch service, reason [shutdown initiated] [2019-05-21T16:47:35,908][INFO][o.e.x.m.p.l.CppLogMessageHandler] [lYWaGy6] [controller/91239] [Main.cc@148] Ml controller exiting [2019-05-21T16:47:35,909][INFO][o.e.x.m.p.NativeController] [lYWaGy6] Native controller process has stopped - no new native processes can be started [2019-05-21T16:47:35,999][INFO][o.e.n.Node] [lYWaGy6] stopped [2019-05-21T16:47:35,999][INFO][o.e.n.Node] [lYWaGy6] closing ... [2019-05-21T16:47:36,015][INFO][o.e.n.Node] [lYWaGy6] closed ``` Something at `2019-05-21T16:47:35,397` is closing your node: ```auto [2019-05-21T16:47:35,397][INFO][o.e.n.Node] [lYWaGy6] stopping ... ``` Any idea why this is happening? ---
**Author:** ![Light](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/light/32/46564_2.png) [@Light](https://discuss.elastic.co/u/Light)\ **Post date:** [May 23, 2019, 8:08am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/11 "2019-05-23T08:08:43Z")
Sadly, not. I don't have any clue. I have uninstalled elasticsearch and now retrying everything from the beginning! ``` yum remove elasticsearch ``` I was wondering whether some of the parameters I added in my elasticsearch.yml may confuse ElasticSearch somehow... More specificially, one of those, which are my active ones in my elasticsearch.yml file: ``` cluster.name: my-application node.name: node-1 node.attr.rack: r1 path.data: /var/lib/elasticsearch path.logs: /var/log/elasticsearch network.host: 0.0.0.0 index.number_of_shards: 1 index.number_of_replicas: 0 node.data: false node.master: false script.disable_dynamic: true ``` If it may provide any additional information, an informatician friend suggested me to try some 'diagnostic' commands, whose output I may add here. ``` systemctl status systemctl --failed sudo service elasticsearch status ``` ---
**Author:** ![Light](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/light/32/46564_2.png) [@Light](https://discuss.elastic.co/u/Light)\ **Post date:** [May 23, 2019, 8:52am UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/12 "2019-05-23T08:52:39Z")
A little update... I have reinstalled it (skipping the firewall configuaration part) and only setting in my .yml file: ``` network.host: localhost ``` I skipped completely the firewall setting part. Now it does seem to work and connect without problems! If I type: ```auto GET 'http://localhost:9200' ``` I get: ``` { "name" : "lYWaGy6", "cluster_name" : "elasticsearch", "cluster_uuid" : "_na_", "version" : { "number" : "6.8.0", "build_flavor" : "default", "build_type" : "rpm", "build_hash" : "65b6179", "build_date" : "2019-05-15T20:06:13.172855Z", "build_snapshot" : false, "lucene_version" : "7.7.0", "minimum_wire_compatibility_version" : "5.6.0", "minimum_index_compatibility_version" : "5.0.0" }, "tagline" : "You Know, for Search" } ``` If I type: > sudo service elasticsearch status Everything seems to be working fine! ``` [root@localhost data]# sudo service elasticsearch status ● elasticsearch.service - Elasticsearch Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: disabled) Active: active (running) since gio 2019-05-23 10:49:37 CEST; 4min 9s ago Docs: http://www.elastic.co Main PID: 49843 (java) Tasks: 350 CGroup: /system.slice/elasticsearch.service ├─49843 /bin/java -Xms1g -Xmx1g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -Des.n... └─50232 /usr/share/elasticsearch/modules/x-pack-ml/platform/linux-x86_64/bin/controller mag 23 10:49:37 localhost.localdomain systemd[1]: Started Elasticsearch. ``` [Those](https://pastebin.com/kuxYgdyF) are my new logs: Any suggestions or it is working properly as it looks like now? ---
**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:** [May 23, 2019, 12:58pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/13 "2019-05-23T12:58:52Z")
It looks good I guess. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [June 20, 2019, 1:00pm UTC](https://discuss.elastic.co/t/curl-7-failed-connect-to-localhost-9200/182044/14 "2019-06-20T13:00:28Z")
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