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Flume: java.lang.NoClassDefFoundError: org/apache/hadoop/io/SequenceFile$CompressionType

Flume: java.lang.NoClassDefFoundError: org/apache/hadoop/io/SequenceFile$CompressionType

error: 2017-08-09 12:29:09,754 (conf-file-poller-0) [ERROR – org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:146)] Failed to start agent because dependencies were not found in classpath. Error follows. java.lang.NoClassDefFoundError: org/apache/hadoop/io/SequenceFile$CompressionType at org.apache.flume.sink.hdfs.HDFSEventSink.configure(HDFSEventSink.java:235) at org.apache.flume.conf.Configurables.configure(Configurables.java:41) at org.apache.flume.node.AbstractConfigurationProvider.loadSinks(AbstractConfigurationProvider.java:411) at org.apache.flume.node.AbstractConfigurationProvider.getConfiguration(AbstractConfigurationProvider.java:102) at org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:141) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.io.SequenceFile$CompressionType at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) … 12 more2017-08-09 12:29:09,754 (conf-file-poller-0) [ERROR – org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:146)] Failed to start agent because dependencies were not found in classpath. Error follows. java.lang.NoClassDefFoundError:…

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QRencode

QRencode

Забавна программа якщо треба перенести якийсь текст на телефон, а під рукою нема ніяких штатних месенджерів echo "text_string" | qrencode -t UTF8 -o – █████████████████████████████ █████████████████████████████ ████ ▄▄▄▄▄ █▀▄█▀▄█ ▄▄▄▄▄ ████ ████ █ █ █▀▄█▀██ █ █ ████ ████ █▄▄▄█ █▀▀ ▄ █ █▄▄▄█ ████ ████▄▄▄▄▄▄▄█▄█ ▀ █▄▄▄▄▄▄▄████ ████ ▄▄▄ ▀▄▄ ██ ▄█▄▀ ▀▄▀████ █████▀▄▄▄█▄█▀█▀▄█▀▄▀█ ▄█████ ████▄▄▄▄█▄▄▄ ▀▄▄▀█ █▀▄█ ▀████ ████ ▄▄▄▄▄ █▄ ▄█▄ ██▀▀ ▄█████ ████ █ █ █ ▄ █▀▀ ▄▀ ▀▄▄████ ████ █▄▄▄█ █ ▄▀▀▄▀▄█▀▀ ██████ ████▄▄▄▄▄▄▄█▄▄█▄▄█▄█▄▄▄▄█████…

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SSH client stuck on connect

SSH client stuck on connect

This is probably an issue with D-Bus and systemd. If the dbus service is restarted for some reason, you will also need to restart systemd-logind restart systemd-logind service: systemctl restart systemd-logindsystemctl restart systemd-logind I had this same issue on CentOS 7, because the messagebus was restarted (which is how the D-Bus service is called on CentOS).

Linux bridge: MAC addresses and dynamic ports

Linux bridge: MAC addresses and dynamic ports

Scenario: KVM virtualization host running several bridged guests. The host has a bridge interface br0 that starts out containing only eth0, and other interfaces are dynamically added and removed from the bridge as guests are started and stopped. The problem is, the host seems to randomly suffer some loss of connectivity (from a few to 30-40 seconds) when some guest is started or stopped. Initially one might think of something related to STP, but it turns out that it is…

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Mysql: wrong slave_master_info after upgrade to 5.7

Mysql: wrong slave_master_info after upgrade to 5.7

After upgrade mysql-server from 5.6 to 5.7.10 something strange going on with multimaster replication. When you add more then one channel replication tool not see second channel and server hangs on first channel. This happens because mysql_upgrade tool have a bug. This bug create columns in table slave_master_info in wrong order.

Add CA certifice from Let’s Encrypt to Java 8

Add CA certifice from Let’s Encrypt to Java 8

For add cert to Java 8 you need use keytool cd /tmp/ && \ curl -O https://letsencrypt.org/certs/letsencryptauthorityx1.der && \ sudo $JAVA_HOME/bin/keytool -noprompt -importcert -alias letsencryptauthorityx1 -keystore $JAVA_HOME/jre/lib/security/cacerts -file letsencryptauthorityx1.der -storepass changeit && \ curl -O https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.der && \ sudo $JAVA_HOME/bin/keytool -noprompt -importcert -alias lets-encrypt-x3-cross-signed -keystore $JAVA_HOME/jre/lib/security/cacerts -file lets-encrypt-x3-cross-signed.der -storepass changeitcd /tmp/ && \ curl -O https://letsencrypt.org/certs/letsencryptauthorityx1.der && \ sudo $JAVA_HOME/bin/keytool -noprompt -importcert -alias letsencryptauthorityx1 -keystore $JAVA_HOME/jre/lib/security/cacerts -file letsencryptauthorityx1.der -storepass changeit && \ curl -O https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.der && \ sudo $JAVA_HOME/bin/keytool -noprompt…

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Syncthing: Debian run script

Syncthing: Debian run script

syncthing Rename syncthing.txt to syncthing Put to /etc/init.d/ Change USER and DAEMON vars chmod 755 /etc/init.d/syncthing chmod 755 /etc/init.d/syncthing To run Syncthing : sudo service syncthing startsudo service syncthing start For autostart sudo update-rc.d syncthing defaultssudo update-rc.d syncthing defaults

Certificate order in Haproxy PEM file

Certificate order in Haproxy PEM file

For SSL in Haproxy you need to create PEM-file and put cert plus private key. But in right order —–BEGIN MY CERTIFICATE—– —–END MY CERTIFICATE—– —–BEGIN INTERMEDIATE CERTIFICATE—– —–END INTERMEDIATE CERTIFICATE—– —–BEGIN INTERMEDIATE CERTIFICATE—– —–END INTERMEDIATE CERTIFICATE—– —–BEGIN ROOT CERTIFICATE—– —–END ROOT CERTIFICATE—– —–BEGIN RSA PRIVATE KEY—– —–END RSA PRIVATE KEY———-BEGIN MY CERTIFICATE—– —–END MY CERTIFICATE—– —–BEGIN INTERMEDIATE CERTIFICATE—– —–END INTERMEDIATE CERTIFICATE—– —–BEGIN INTERMEDIATE CERTIFICATE—– —–END INTERMEDIATE CERTIFICATE—– —–BEGIN ROOT CERTIFICATE—– —–END ROOT CERTIFICATE—– —–BEGIN RSA PRIVATE KEY—– —–END RSA…

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Java8 in Debian

Java8 in Debian

For starting we need install add-apt-repository apt-get install software-properties-common python-software-propertiesapt-get install software-properties-common python-software-properties Then install java8 sudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java8-installersudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java8-installer To automatically set up the Java 8 environment variables: sudo apt-get install oracle-java8-set-defaultsudo apt-get install oracle-java8-set-default or echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee /etc/apt/sources.list.d/webupd8team-java.list echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv-keys EEA14886 apt-get update apt-get install oracle-java8-installerecho…

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