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Ubuntu 启动zookeeper报错（ubuntu安装zookeeper）

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本文目录一览：

Ubuntu 启动zookeeper报错（ubuntu安装zookeeper）

Ubuntu 启动zookeeper报错（ubuntu安装zookeeper）

在启动zk客户端连接server时报错：

2019-03-30 23:06:24,915 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):ClientCnxn[email protected]] - Socket error occurred: localhost/127.0.0.1:2181: Connection refused
2019-03-30 23:06:26,017 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):ClientCnxn[email protected]] - opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unkNown error)
2019-03-30 23:06:26,019 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):ClientCnxn[email protected]] - Socket error occurred: localhost/127.0.0.1:2181: Connection refused

原因是zkServer未正常启动，为确保启动正常，切换用户到root下进行启动：

# zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/fujiangwei/kinson/zk/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

查看启动状态：

# zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/fujiangwei/kinson/zk/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: standalone

重新连接server:

$ zkCli.sh -server localhost:2181
Connecting to localhost:2181
2019-03-30 23:11:04,093 [myid:] - INFO  [main:[email protected]109] - Client environment:zookeeper.version=3.5.4-beta-7f51e5b68cf2f80176ff944a9ebd2abbc65e7327,built on 05/11/2018 16:27 GMT
2019-03-30 23:11:04,106 [myid:] - INFO  [main:[email protected]109] - Client environment:host.name=ubuntu
2019-03-30 23:11:04,106 [myid:] - INFO  [main:[email protected]109] - Client environment:java.version=1.8.0_201
2019-03-30 23:11:04,114 [myid:] - INFO  [main:[email protected]109] - Client environment:java.vendor=Oracle Corporation
2019-03-30 23:11:04,115 [myid:] - INFO  [main:[email protected]109] - Client environment:java.home=/home/fujiangwei/kinson/jdk1.8.0_201/jre
2019-03-30 23:11:04,116 [myid:] - INFO  [main:[email protected]109] - Client environment:java.class.path=/home/fujiangwei/kinson/zk/bin/../build/classes:/home/fujiangwei/kinson/zk/bin/../build/lib/*.jar:/home/fujiangwei/kinson/zk/bin/../lib/slf4j-log4j12-1.7.25.jar:/home/fujiangwei/kinson/zk/bin/../lib/slf4j-api-1.7.25.jar:/home/fujiangwei/kinson/zk/bin/../lib/netty-3.10.6.Final.jar:/home/fujiangwei/kinson/zk/bin/../lib/log4j-1.2.17.jar:/home/fujiangwei/kinson/zk/bin/../lib/jline-2.11.jar:/home/fujiangwei/kinson/zk/bin/../lib/jetty-util-9.2.18.v20160721.jar:/home/fujiangwei/kinson/zk/bin/../lib/jetty-servlet-9.2.18.v20160721.jar:/home/fujiangwei/kinson/zk/bin/../lib/jetty-server-9.2.18.v20160721.jar:/home/fujiangwei/kinson/zk/bin/../lib/jetty-security-9.2.18.v20160721.jar:/home/fujiangwei/kinson/zk/bin/../lib/jetty-io-9.2.18.v20160721.jar:/home/fujiangwei/kinson/zk/bin/../lib/jetty-http-9.2.18.v20160721.jar:/home/fujiangwei/kinson/zk/bin/../lib/javax.servlet-api-3.1.0.jar:/home/fujiangwei/kinson/zk/bin/../lib/jackson-mapper-asl-1.9.11.jar:/home/fujiangwei/kinson/zk/bin/../lib/jackson-core-asl-1.9.11.jar:/home/fujiangwei/kinson/zk/bin/../lib/commons-cli-1.2.jar:/home/fujiangwei/kinson/zk/bin/../lib/audience-annotations-0.5.0.jar:/home/fujiangwei/kinson/zk/bin/../zookeeper-3.5.4-beta.jar:/home/fujiangwei/kinson/zk/bin/../src/java/lib/*.jar:/home/fujiangwei/kinson/zk/bin/../conf:.:/home/fujiangwei/kinson/jdk1.8.0_201/lib:/home/fujiangwei/kinson/jdk1.8.0_201/jre/lib:
2019-03-30 23:11:04,117 [myid:] - INFO  [main:[email protected]] - Client environment:java.library.path=/usr/java/packages/lib/i386:/lib:/usr/lib
2019-03-30 23:11:04,122 [myid:] - INFO  [main:[email protected]] - Client environment:java.io.tmpdir=/tmp
2019-03-30 23:11:04,124 [myid:] - INFO  [main:[email protected]] - Client environment:java.compiler=<NA>
2019-03-30 23:11:04,124 [myid:] - INFO  [main:[email protected]] - Client environment:os.name=Linux
2019-03-30 23:11:04,125 [myid:] - INFO  [main:[email protected]] - Client environment:os.arch=i386
2019-03-30 23:11:04,127 [myid:] - INFO  [main:[email protected]] - Client environment:os.version=3.11.0-15-generic
2019-03-30 23:11:04,129 [myid:] - INFO  [main:[email protected]] - Client environment:user.name=fujiangwei
2019-03-30 23:11:04,129 [myid:] - INFO  [main:[email protected]] - Client environment:user.home=/home/fujiangwei
2019-03-30 23:11:04,130 [myid:] - INFO  [main:[email protected]] - Client environment:user.dir=/home/fujiangwei
2019-03-30 23:11:04,130 [myid:] - INFO  [main:[email protected]] - Client environment:os.memory.free=11MB
2019-03-30 23:11:04,136 [myid:] - INFO  [main:[email protected]] - Client environment:os.memory.max=247MB
2019-03-30 23:11:04,136 [myid:] - INFO  [main:[email protected]] - Client environment:os.memory.total=15MB
2019-03-30 23:11:04,150 [myid:] - INFO  [main:[email protected]] - Initiating client connection,connectString=localhost:2181 sessionTimeout=30000 [email protected]
2019-03-30 23:11:04,174 [myid:] - INFO  [main:[email protected]] - jute.maxbuffer value is 4194304 Bytes
Welcome to ZooKeeper!
2019-03-30 23:11:04,231 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):[email protected]] - opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unkNown error)
jline support is enabled
2019-03-30 23:11:04,383 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):[email protected]] - Socket connection established,initiating session,client: /127.0.0.1:35373,server: localhost/127.0.0.1:2181
2019-03-30 23:11:04,467 [myid:localhost:2181] - INFO  [main-SendThread(localhost:2181):[email protected]] - Session establishment complete on server localhost/127.0.0.1:2181,sessionid = 0x10004e6659b0000,negotiated timeout = 30000
[zk: localhost:2181(CONNECTING) 0] 
WATCHER::

WatchedEvent state:SyncConnected type:None path:null

连接正常。

apt-get update 失败 ubuntu:Tempory failure resolving 'cn.archive.ubuntu.com ubuntu

apt-get update 失败 ubuntu:Tempory failure resolving 'cn.archive.ubuntu.com ubuntu

当运行apt-get update后出现如下错误时：
E: Some index files Failed to download,they have been ignored,or old ones used instead.

可以将目录下/var/lib/apt/lists/partial/所有的文件清掉，再次运行apt-get update即可！自带源在大陆不好。


出现以下错误：

ubuntu:Tempory failure resolving ''cn.archive.ubuntu.com ubuntu


修改dns:

1,重启生效：

sudovi/etc/resolvconf/resolv.conf.d/base（这个文件默认是空的）

在里面插入：
nameserver8.8.8.8
nameserver8.8.4.4

如果有多个DNS就一行一个

修改好保存，然后执行

sudoresolvconf-u

再看/etc/resolv.conf，最下面就多了2行：

cat/etc/resolv.conf
#Dynamicresolv.conf(5)fileforglibcresolver(3)generatedbyresolvconf(8)
#DONOTEDITTHISFILEBYHAND--YOURCHANGESWILLBEOVERWRITTEN
可以看到我们的设置已经加上了，然后再ping一个域名，当时就可以解析了，无需重启。


2，重启失效：

配置文件地址 /etc/resolv.conf

使用编辑器打开

改为如下内容：
search localdomain
nameserver 202.96.128.86 希望修改成的DNS
nameserver 202.96.128.166 备用DNS

重启网络：sudo /etc/init.d/networking restart。即可

Debian 9 / Debian 10 / Ubuntu 18.04 / Ubuntu 18.10 快速开启 BBR 加速 或 关闭 BBR 加速

Debian 9 / Debian 10 / Ubuntu 18.04 / Ubuntu 18.10 快速开启 BBR 加速 或 关闭 BBR 加速

如果使用的是 Debian 9、Debian 10、Ubuntu 18.04、Ubuntu 18.10 等内核高于 4.9 版本的系统，均可以使用此方法开启 BBR 加速，若你使用了 Ubuntu 19.04 的系统无需开启，系统默认就开启了。虽然 BBR 没有锐速那么暴力，但是兼容性和稳定性占优势，推荐大家使用。对与什么是 BBR 我就不详细说明了，这是一款由谷歌推出的 TCP 单边加速的拥塞控制算法。

 

开启 BBR

1. 修改 sysctl.conf 系统参数

echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf

 

2. 保存并生效

sysctl -p

得到返回值如下：（最后两行有就可以了）

 

3. 查看是否已开启 BBR

sysctl net.ipv4.tcp_available_congestion_control

若得到返回值带有 bbr 则成功开启，如：

 

4. 检查 BBR 是否成功启动

lsmod | grep bbr

如返回信息则表示已经成功开启：

 

如果不确定自己的系统是支持快速开启 bbr 可以查看使用下面的命令查看内核，只要 4.9 及以上版本均可直接开启：

uname -r

 

关闭 BBR

若想要关闭 bbr 加速也很简单，只需要将第二步的返回内容在 sysctl.conf 内删除或注释掉即可。

 

1. 修改配置文件

vi /etc/sysctl.conf

进入配置文件，将添加的内容在最后，若找不到往下翻，按 i 键或 Insert 键开启编辑，注释或删除内容后，按 ESC 键退出编辑，键入

:wq

保存并退出。

 

2. 保存配置

sysctl -p

 

3. 重启系统生效

reboot

 

3. 查看是否已关闭 BBR

sysctl net.ipv4.tcp_available_congestion_control

 

 

install nginx on ubuntu install ubuntu usb install ubuntu 14.04 ubuntu install jd

install nginx on ubuntu install ubuntu usb install ubuntu 14.04 ubuntu install jd

Intel RealSense D435i Installation on Linux (Ubuntu 16.04 and Ubuntu 18.04)

Intel RealSense D435i Installation on Linux (Ubuntu 16.04 and Ubuntu 18.04)

1. Install 3rd-party dependencies

1.1 apt-get update

sudo apt-get update
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1.2 install libusb-1.0, libglfw, freeglut,

sudo apt-get install libusb-dev libusb-1.0-0-dev libglfw3 libglfw3-dev freeglut3 freeglut3-dev
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1.3 Install libpng12-dev

1.3.1 On Ubuntu 16.04, run the following command:

sudo apt-get install libpng12-dev

1.3.2 On Ubuntu 18.04, run the following command:

wget -q -O /tmp/libpng12.deb http://security.ubuntu.com/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb

sudo dpkg -i /tmp/libpng12.deb

2. Debian Package Installation

2.1 Add Intel server to the list of repositories :

echo 'deb http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo xenial main' | sudo tee /etc/apt/sources.list.d/realsense-public.list

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It is recommended to backup /etc/apt/sources.list.d/realsense-public.list file in case of an upgrade.

2.2 Register the server’s public key :

sudo apt-key adv --keyserver keys.gnupg.net --recv-key 6F3EFCDE
sudo apt-key adv --keyserver keys.gnupg.net --recv-key C8B3A55A6F3EFCDE || sudo apt-key adv -- keyserver hkp://keyserver.ubuntu.com:80 --recv-key C8B3A55A6F3EFCDE

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Refresh the list of repositories and packages available :

sudo apt-get update

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2.3 Install the librscalibrationtool package which includes Intel® RealSense™ Dynamic Calibrator:

sudo apt-get install librscalibrationtool

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说明:

librscalibrationtool适用设备为 Intel RealSense D400, D410, D415, D420, D430, D435.
安装后的使用说明见: /usr/share/doc/librscalibrationtool/README.md

2.4 Failure – (Optional) Developers shall also install librscalibrationapi package:

sudo apt-get install librscalibrationapi

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Problem:

librscalibrationapi : Depends: libpng12-dev but it is not installable
分析: 自Ubuntu18.04以后，libpng12-dev已经被弃用

3. Checking Package Installation

After the debian package install finishes, check for files installed. Under debian convention, the executables are installed under /usr/bin, library files under /usr/lib, and other files including sample code under /usr/share/doc.
For example, for Calibration Tool, librscalibrationtool, the files are installed as below:

sudo dpkg -L librscalibrationtool

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4. Video4Linux backend

  1. In order to run demos install:
sudo apt-get install librealsense2-dkms
sudo apt-get install librealsense2-utils

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The above two lines will deploy librealsense2 udev rules, kernel drivers, runtime library and executable demos and tools.
Reconnect the Intel RealSense depth camera and run: realsense-viewer

  1. Developers shall install additional packages:
sudo apt-get install librealsense2-dev
sudo apt-get install librealsense2-dbg

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With dev package installed, you can compile an application with librealsense using g++ -std=c++11 filename.cpp -lrealsense2 or an IDE of your choice.

  1. Verify that the kernel is updated :
modinfo uvcvideo | grep "version:" 

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should include realsense string

5. Test Installation

  1. Print the tool version to screen:
/usr/bin/Intel.Realsense.DynamicCalibrator -v

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  1. To print device information to screen, connect a camera device to the system and execute the following command:
/usr/bin/Intel.Realsense.DynamicCalibrator -list

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6. Perform Calibration for Camera

/usr/bin/Intel.Realsense.DynamicCalibrator

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* Problem (not fixed):

I can see the RGB, Depth and Gyro information without problems when I run realsense-vieweror subscribe to the realsense-ros topics. But when I run/usr/bin/Intel.Realsense.DynamicCalibrator
And click on Start Calibration I get the Failed to start Calibration Error as seen:

PS: relative issue discussion on github:
https://github.com/IntelRealSense/librealsense/issues/3990

今天关于Ubuntu 启动zookeeper报错和ubuntu安装zookeeper的分享就到这里，希望大家有所收获，若想了解更多关于apt-get update 失败 ubuntu:Tempory failure resolving 'cn.archive.ubuntu.com ubuntu、Debian 9 / Debian 10 / Ubuntu 18.04 / Ubuntu 18.10 快速开启 BBR 加速 或 关闭 BBR 加速、install nginx on ubuntu install ubuntu usb install ubuntu 14.04 ubuntu install jd、Intel RealSense D435i Installation on Linux (Ubuntu 16.04 and Ubuntu 18.04)等相关知识，可以在本站进行查询。

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