Question

我一直在关注有关开发个性化语音助手的简单教程。为此，我正在使用Elasticsearch。当我尝试运行代码时，elasticsearch提示Failed to establish new connection时出错。我不确定是什么原因导致了此错误，因为我已经安装了elasticsearch及其python客户端。

我检查了我是否同时安装了弹性搜索及其python客户端，并且都已完成。我已经通过pip3安装安装了python客户端。我还检查了连接URL是否正确，例如https://localhost:9200/。

我正在使用macOS。

s = Elasticsearch(['https://localhost:9200/'])
bulk(es, records, index='voice_assistant', doc_type='text', raise_on_error=True)
def search_es(query):
    res = es.search(index="voice_assistant", doc_type="text", body={                     
    "query" :{
        "match": {
            "voice_command": {
                "query": query,
                "fuzziness": 2
            }
            }
        },
    })
    return res['hits']['hits'][0]['_source']['sys_command'

实际错误消息是

File "/usr/local/lib/python3.7/site-packages/elasticsearch/connection/http_urllib3.py", line 105, in perform_request
    raise ConnectionError('N/A', str(e), e)
elasticsearch.exceptions.ConnectionError: ConnectionError(<urllib3.connection.VerifiedHTTPSConnection object at 0x1266dce10>: Failed to establish a new connection: [Errno 61] Connection refused) caused by: NewConnectionError(<urllib3.connection.VerifiedHTTPSConnection object at 0x1266dce10>: Failed to establish a new connection: [Errno 61] Connection refused)

任何人都可以帮助我解决此错误。我是第一次使用Elasticsearch。

编辑：我试图在终端中运行elasticsearch，并且收到了以下警告，

OpenJDK 64-Bit Server VM warning: Cannot open file logs/gc.log due to No such file or directory

我进一步搜索了此警告，并找到了一个答案，提到它可能在弹性搜索中是错误的，我不确定，因为我使用的是最新版本。我提到的答案是

https://stackoverflow.com/questions/48696080/java-hotspottm-64-bit-server-vm-warning-cannot-open-file-logs-gc-log-due-to-no

Edit2：现在，当我尝试在人体学上启动elasticsearch时，出现以下错误

StartupException: java.lang.IllegalStateException: failed to obtain node locks, tried [[/usr/local/var/lib/elasticsearch]] with lock id [0]; maybe these locations are not writable or multiple nodes were started without increasing [node.max_local_storage_nodes] (was [1])?
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-7.4.0.jar:7.4.0]
    at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-7.4.0.jar:7.4.0]
    at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-7.4.0.jar:7.4.0]
    at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:125) ~[elasticsearch-cli-7.4.0.jar:7.4.0]
    at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-7.4.0.jar:7.4.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) ~[elasticsearch-7.4.0.jar:7.4.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-7.4.0.jar:7.4.0]

昨天我也遇到了同样的错误，但是当我重新启动系统时，它一切正常，是因为某种操作正在后面进行，并且它是否有任何特定的killall命令来终止所有操作开始之前呢？

Answer 1

通过使用最新版本的python-es模块，此问题已得到解决，因此最好升级该模块。在上述情况下，以前使用的版本是2.4.0v，现在使用的最新版本是6.0.0v，因此问题得以解决。

无法通过Elasticsearch建立连接错误

1 个答案: