一张假钞的真实世界

大道至简

发表于 更新于 分类于 ， 阅读次数： Changyan：

异常信息如下：

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Thu Nov 26 23:54:22 CST 2020 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
Thu Nov 26 23:54:23 CST 2020 WARN: Caught while disconnecting...
	
EXCEPTION STACK TRACE:
	
	
	
** BEGIN NESTED EXCEPTION ** 

javax.net.ssl.SSLException
MESSAGE: closing inbound before receiving peer's close_notify

STACKTRACE:

javax.net.ssl.SSLException: closing inbound before receiving peer's close_notify
	at sun.security.ssl.Alert.createSSLException(Alert.java:133)
	at sun.security.ssl.Alert.createSSLException(Alert.java:117)
	at sun.security.ssl.TransportContext.fatal(TransportContext.java:314)
	at sun.security.ssl.TransportContext.fatal(TransportContext.java:270)
	at sun.security.ssl.TransportContext.fatal(TransportContext.java:261)
	at sun.security.ssl.SSLSocketImpl.shutdownInput(SSLSocketImpl.java:656)
	at sun.security.ssl.SSLSocketImpl.shutdownInput(SSLSocketImpl.java:635)
	at com.mysql.jdbc.MysqlIO.quit(MysqlIO.java:2246)
	at com.mysql.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:4201)
	at com.mysql.jdbc.ConnectionImpl.close(ConnectionImpl.java:1472)
	at com.jolbox.bonecp.BoneCP.obtainRawInternalConnection(BoneCP.java:353)
	at com.jolbox.bonecp.BoneCP.<init>(BoneCP.java:416)
	at com.jolbox.bonecp.BoneCPDataSource.getConnection(BoneCPDataSource.java:120)
	at org.datanucleus.store.rdbms.ConnectionFactoryImpl$ManagedConnectionImpl.getConnection(ConnectionFactoryImpl.java:483)
	at org.datanucleus.store.rdbms.RDBMSStoreManager.<init>(RDBMSStoreManager.java:296)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.datanucleus.plugin.NonManagedPluginRegistry.createExecutableExtension(NonManagedPluginRegistry.java:606)
	at org.datanucleus.plugin.PluginManager.createExecutableExtension(PluginManager.java:301)
	at org.datanucleus.NucleusContextHelper.createStoreManagerForProperties(NucleusContextHelper.java:133)
	at org.datanucleus.PersistenceNucleusContextImpl.initialise(PersistenceNucleusContextImpl.java:420)
	at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.freezeConfiguration(JDOPersistenceManagerFactory.java:821)
	at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.createPersistenceManagerFactory(JDOPersistenceManagerFactory.java:338)
	at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java:217)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at javax.jdo.JDOHelper$16.run(JDOHelper.java:1965)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.jdo.JDOHelper.invoke(JDOHelper.java:1960)
	at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1166)
	at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:808)
	at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:701)
	at org.apache.hadoop.hive.metastore.ObjectStore.getPMF(ObjectStore.java:515)
	at org.apache.hadoop.hive.metastore.ObjectStore.getPersistenceManager(ObjectStore.java:544)
	at org.apache.hadoop.hive.metastore.ObjectStore.initializeHelper(ObjectStore.java:399)
	at org.apache.hadoop.hive.metastore.ObjectStore.initialize(ObjectStore.java:336)
	at org.apache.hadoop.hive.metastore.ObjectStore.setConf(ObjectStore.java:297)
	at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:76)
	at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:136)
	at org.apache.hadoop.hive.metastore.RawStoreProxy.<init>(RawStoreProxy.java:58)
	at org.apache.hadoop.hive.metastore.RawStoreProxy.getProxy(RawStoreProxy.java:67)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.newRawStore(HiveMetaStore.java:599)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getMS(HiveMetaStore.java:564)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:626)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:416)
	at org.apache.hadoop.hive.metastore.RetryingHMSHandler.<init>(RetryingHMSHandler.java:78)
	at org.apache.hadoop.hive.metastore.RetryingHMSHandler.getProxy(RetryingHMSHandler.java:84)
	at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6490)
	at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:238)
	at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:70)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1652)
	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:80)
	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:130)
	at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:101)
	at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3367)
	at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3406)
	at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3386)
	at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3640)
	at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:236)
	at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:221)
	at org.apache.hadoop.hive.ql.metadata.Hive.<init>(Hive.java:366)
	at org.apache.hadoop.hive.ql.metadata.Hive.create(Hive.java:310)
	at org.apache.hadoop.hive.ql.metadata.Hive.getInternal(Hive.java:290)
	at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:266)
	at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:558)
	at org.apache.hadoop.hive.ql.session.SessionState.beginStart(SessionState.java:531)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:705)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:136)


** END NESTED EXCEPTION **

解决方法：在JDBC连接串中添加useSSL=false配置，如：jdbc:mysql://192.168.72.212/hive?createDatabaseIfNotExist=true&amp;characterEncoding=utf-8&amp;useSSL=false

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发表于 更新于 分类于 ， 阅读次数： Changyan：
  • # 号截取：删除左边字符，保留右边字符。
  • ## 号截取：删除左边字符，保留右边字符。
  • %号截取：删除右边字符，保留左边字符
  • %% 号截取：删除右边字符，保留左边字符

示例一：

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$ var='abcbd'
$ echo ${var#*b}
cbd
$ echo ${var##*b}
d
$ echo ${var%b*}
abc
$ echo ${var%%b*}
a
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发表于 更新于 分类于 ， 阅读次数： Changyan：

异常信息如下：

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[ERROR] Failed to execute goal org.apache.rat:apache-rat-plugin:0.11:check (default) on project ranger: Too many files with unapproved license: 1 See RAT report in: /home/zhangjc/ysten/git/apache-ranger-1.2.0/target/rat.txt -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.rat:apache-rat-plugin:0.11:check (default) on project ranger: Too many files with unapproved license: 1 See RAT report in: /home/zhangjc/ysten/git/apache-ranger-1.2.0/target/rat.txt
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)

解决方法：增加-Drat.skip=true参数 ，跳过licensing检查。

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发表于 更新于 分类于 ， 阅读次数： Changyan：

直接上配置：

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server {
  server_name 192.168.72.31;
  listen 8001;
  
  charset utf-8;
  
  proxy_connect_timeout 600s;
  proxy_read_timeout 600s;
  proxy_send_timeout 600s;
  
  location / {
    proxy_set_header Host $http_x_forwarded_for;
    proxy_set_header X-Forwarded-For $http_x_forwarded_for;
    
    proxy_pass http://hue;
  }
}

upstream hue {
  hash $cookie_sessionid;
  
  server 192.168.72.22:8888 max_fails=3;
  server 192.168.72.31:8888 max_fails=3;
}

重点是调整upstream hash的策略。因为Hue是需要保持session的，同一个session的请求需要发送到同一台后端服务器上。简单的可以采用ip_hash策略，这个策略存在两个重要的问题：

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发表于 更新于 分类于 ， 阅读次数： Changyan：

如果使用开发分支代码如master分支）编译安装，需要自己编译语言文件。例如Hue安装目录为“/opt/hue”，则安装后执行以下命令：

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$ cd /opt/hue
$ make locales

如果需要则重启Hue即可。是否需要重启我没有验证：）

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发表于 更新于 分类于 ， 阅读次数： Changyan：

在编译Hue的时候出现错误信息如下：

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Running '/home/zhangjc/ysten/git/ysten-hue/build/env/bin/hue makemigrations --noinput' with None
Traceback (most recent call last):
  File "/home/zhangjc/ysten/git/ysten-hue/build/env/bin/hue", line 33, in <module>
    sys.exit(load_entry_point('desktop', 'console_scripts', 'hue')())
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/manage_entry.py", line 225, in entry
    execute_from_command_line(sys.argv)
  File "/home/zhangjc/ysten/git/ysten-hue/build/env/lib/python3.7/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/home/zhangjc/ysten/git/ysten-hue/build/env/lib/python3.7/site-packages/django/core/management/__init__.py", line 338, in execute
    django.setup()
  File "/home/zhangjc/ysten/git/ysten-hue/build/env/lib/python3.7/site-packages/django/__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/zhangjc/ysten/git/ysten-hue/build/env/lib/python3.7/site-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models()
  File "/home/zhangjc/ysten/git/ysten-hue/build/env/lib/python3.7/site-packages/django/apps/config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  File "/home/zhangjc/ysten/git/ysten-hue/build/env/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/models.py", line 47, in <module>
    from useradmin.models import User, Group, get_organization
  File "/home/zhangjc/ysten/git/ysten-hue/apps/useradmin/src/useradmin/models.py", line 56, in <module>
    from desktop.lib.connectors.models import _get_installed_connectors, Connector
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/lib/connectors/models.py", line 29, in <module>
    from desktop.lib.connectors.types import get_connectors_types
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/lib/connectors/types.py", line 24, in <module>
    from desktop.lib.exceptions_renderable import PopupException
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/lib/exceptions_renderable.py", line 31, in <module>
    import desktop.lib.django_util
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/lib/django_util.py", line 42, in <module>
    import desktop.lib.thrift_util
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/lib/thrift_util.py", line 49, in <module>
    from desktop.lib.thrift_.http_client import THttpClient
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/lib/thrift_/http_client.py", line 26, in <module>
    from desktop.lib.rest.http_client import HttpClient
  File "/home/zhangjc/ysten/git/ysten-hue/desktop/core/src/desktop/lib/rest/http_client.py", line 32, in <module>
    from urllib3.contrib import pyopenssl
  File "/usr/lib/python3/dist-packages/urllib3/contrib/pyopenssl.py", line 62, in <module>
    from ..packages import six
ImportError: cannot import name 'six' from 'urllib3.packages' (/usr/lib/python3/dist-packages/urllib3/packages/__init__.py)

错误原因：根据错误信息可以看到是“/usr/lib/python3/dist-packages/urllib3”这个包的问题。正确的应该是引用“build/env/lib/python3.7/site-packages/”下的包。查看”/usr/lib/python3/dist-packages/urllib3”下的包信息，发现包版本比较低。

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发表于 更新于 阅读次数： Changyan：

自定义安装Python3后在命令行使用方向键时出现以下问题：

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$ python3
Python 3.7.4 (default, Dec 11 2019, 17:40:08) 
[GCC 7.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> ^[[A^[[B^[[C^[[D

解决方法是安装readline：

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发表于 更新于 分类于 ， 阅读次数： Changyan：

例如如下错误：

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$ python3 git.py 
Traceback (most recent call last):
  File "git.py", line 1, in <module>
    from git import Repo
  File "/home/a/git.py", line 1, in <module>
    from git import Repo
ImportError: cannot import name 'Repo' from 'git' (/home/a/git.py)

这种错误基本都是因为Python脚本的名称与模块的名称重复导致的。像我这个例子中就是因为git.py与GitPython模块中的文件名一样导致的。

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发表于 更新于 分类于 ， 阅读次数： Changyan：

本次问题解决纯属蒙对了，原理不清楚。

当我从一台CentOS 7.3的服务器通过ssh登录另外一台CentOS 6.8的服务器时出现以下错误信息：

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[root@192-168-72-75 .ssh]# ssh -p65522 bddev@192.168.72.208
no matching cipher found: client arcfour server chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
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