Elasticsearch 5.x 無法啟動

Question

我一直在嘗試安裝 Elasticsearch，對於 7.x 版本來說這似乎很容易，而對於 5.x 版本來說卻是一件令人頭疼的事情。 整個考驗之所以存在，是因為 Elasticseach、Django Haystack、Django CMS 和其他東西之間存在大量兼容性要求。 如果有人有一張漂亮的桌子或有辦法繞着它轉，我會很高興聽到的。

至於實際問題，在安裝 ES 5.x 之后，我似乎無法讓它工作。

user@user-desktop:~/sites/project-web/project$ sudo systemctl restart elasticsearch
user@user-desktop:~/sites/project-web/project$ curl -X GET localhost:9200
curl: (7) Failed to connect to localhost port 9200: Connection refused
user@user-desktop:~/sites/project-web/project$ 

/etc/elasticsearch/elasticsearch.yml中未注釋的實體

# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: project-search
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: node-1
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
#path.data: /path/to/data
#
# Path to log files:
#
#path.logs: /path/to/logs
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: 0.0.0.0
#
# Set a custom port for HTTP:
#
http.port: 9200
transport.host: localhost
transport.tcp.port: 9300
#
# For more information, consult the network module documentation.
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
#discovery.zen.ping.unicast.hosts: ["host1", "host2"]
discovery.zen.ping.unicast.hosts: ["0.0.0.0"]
#discovery.seed_hosts:["0.0.0.0"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
#
discovery.zen.minimum_master_nodes: 1
#
# For more information, consult the zen discovery module documentation.
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
#gateway.recover_after_nodes: 3
#
# For more information, consult the gateway module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true

這是失敗的狀態：

user@user-desktop:~/sites/project-web/project$ systemctl status elasticsearch.service 
● elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sun 2019-11-24 15:39:25 CST; 3min 54s ago
     Docs: http://www.elastic.co
  Process: 19098 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid --quiet -Edefault.path.logs=${LOG_DIR} -Edefault.path.data=${DATA_DIR} -Edefault.path.conf=${CONF_DI
  Process: 19097 ExecStartPre=/usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec (code=exited, status=0/SUCCESS)
 Main PID: 19098 (code=exited, status=1/FAILURE)

Nov 24 15:39:24 user-desktop systemd[1]: Starting Elasticsearch...
Nov 24 15:39:24 user-desktop systemd[1]: Started Elasticsearch.
Nov 24 15:39:24 user-desktop elasticsearch[19098]: OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
Nov 24 15:39:25 user-desktop systemd[1]: elasticsearch.service: Main process exited, code=exited, status=1/FAILURE
Nov 24 15:39:25 user-desktop systemd[1]: elasticsearch.service: Failed with result 'exit-code'.

在/var/log/elasticsearch/project-search.log我發現以下錯誤：

[2019-11-24T15:46:44,319][INFO ][o.e.n.Node               ] [node-1] initializing ...
[2019-11-24T15:46:44,410][ERROR][o.e.b.Bootstrap          ] Exception
org.elasticsearch.ElasticsearchException: java.io.IOException: failed to read [id:0, legacy:false, file:/var/lib/elasticsearch/nodes/0/_state/node-0.st]
        at org.elasticsearch.ExceptionsHelper.maybeThrowRuntimeAndSuppress(ExceptionsHelper.java:196) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestState(MetaDataStateFormat.java:335) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.env.NodeEnvironment.loadOrCreateNodeMetaData(NodeEnvironment.java:418) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.env.NodeEnvironment.<init>(NodeEnvironment.java:267) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.node.Node.<init>(Node.java:265) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.node.Node.<init>(Node.java:245) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:233) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:233) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:342) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:132) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:123) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:70) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:134) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:91) [elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:84) [elasticsearch-5.6.16.jar:5.6.16]
Caused by: java.io.IOException: failed to read [id:0, legacy:false, file:/var/lib/elasticsearch/nodes/0/_state/node-0.st]
        at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestState(MetaDataStateFormat.java:328) ~[elasticsearch-5.6.16.jar:5.6.16]
        ... 14 more
Caused by: java.lang.IllegalArgumentException: [node_meta_data] unknown field [node_version], parser not found
        at org.elasticsearch.common.xcontent.ObjectParser.getParser(ObjectParser.java:399) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.common.xcontent.ObjectParser.parse(ObjectParser.java:159) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.common.xcontent.ObjectParser.apply(ObjectParser.java:183) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.env.NodeMetaData$1.fromXContent(NodeMetaData.java:110) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.env.NodeMetaData$1.fromXContent(NodeMetaData.java:94) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.gateway.MetaDataStateFormat.read(MetaDataStateFormat.java:203) ~[elasticsearch-5.6.16.jar:5.6.16]
        at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestState(MetaDataStateFormat.java:323) ~[elasticsearch-5.6.16.jar:5.6.16]
        ... 14 more

有人能告訴我這是怎么回事嗎？ 任何有關解決此問題和讓 ES 工作的幫助將不勝感激。

Answer 1

看起來像 elasticSearch 版本之間的不一致問題。 如果您之前使用 ES 版本 7.0 對數據進行了索引，那么現在磁盤中該實例中的數據與 ES 版本 5.0 不兼容。

Answer 2

刪除 elasticsearch 目錄： sudo rm -rf /var/lib/elasticsearch

並重新安裝elasticsearch

為我工作。

Answer 3

對於使用 brew 的 mac 用戶，請先清理所有 brew 文件

brew uninstall elasticsearch
rm -rf /usr/local/etc/elasticsearch
rm -rf /usr/local/var/lib/elasticsearch

然后重新安裝您的彈性搜索版本，例如

brew install elasticsearch@6

確保 elasticsearch 指向兼容的 java 版本

nano /usr/local/opt/elasticsearch@6/bin

然后將此行更改為兼容版本

JAVA_HOME="${JAVA_HOME:-/usr/local/opt/openjdk@17YOUR_COMPATIBLE_VERSION/libexec/openjdk.jdk/Contents/Home}" exec "/usr/local/Cellar/elasticsearch@6/6.8.23/libexec/bin/elasticsearch"  "$@"

在終端中運行 elasticsearch

elasticsearch