目录

1. rosdep init 失败的解决办法1.2 Error1.3 手动创建20-default.list文件1.4 更新 2. rosdep update 失败的解决办法2.1 Error2.2 更新Ubuntu2.3 更新ROS 3. Ubuntu18.04安装ROS-melodicReference

1. rosdep init 失败的解决办法

有时由于服务器，网络等问题，无法执行rosdep init操作，可以手动创建20-default.list文件，然后进行rosdep update操作。

1.2 Error

#出现如下错误 ERROR: cannot download default sources list from: https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-default.list Website may be down.

1.3 手动创建20-default.list文件

$ sudo nano /etc/ros/rosdep/sources.list.d/20-default.list # 然后将下面的内容拷贝到文件中保存即可 # os-specific listings first yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml osx # generic yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml gbpdistro https://raw.githubusercontent.com/ros/rosdistro/master/releases/fuerte.yaml fuerte # newer distributions (Groovy, Hydro, ...) must not be listed anymore, they are being fetched from the rosdistro index.yaml instead

1.4 更新

$ rosdep update

2. rosdep update 失败的解决办法

无法执行rosdep update操作，可以先更新Ubuntu，再更新ROS。

2.1 Error

#出现timeout错误 reading in sources list data from /etc/ros/rosdep/sources.list.d ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml]: <urlopen error timed out> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml) ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml]: <urlopen error timed out> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml) ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml]: <urlopen error timed out> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml) ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml]: <urlopen error timed out> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml) ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/releases/fuerte.yaml]: Failed to download target platform data for gbpdistro: <urlopen error timed out>

2.2 更新Ubuntu

$ sudo apt-get update

2.3 更新ROS

$ rosdep update

3. Ubuntu18.04安装ROS-melodic

#添加中科大的ROS镜像源 $ sudo sh -c '. /etc/lsb-release && echo "deb http://mirrors.ustc.edu.cn/ros/ubuntu/DISTRIB_CODENAME main" > /etc/apt/sources.list.d/ros-latest.list' #配置key,原先4开头的key禁用了，换成下面的key $ sudo apt-key del 421C365BD9FF1F717815A3895523BAEEB01FA116 $ sudo -E apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654 #更新 $ sudo apt-get update #安装melodic桌面完整版 $ sudo apt-get install ros-melodic-desktop-full #初始化rosdep $ sudo rosdep init #ROS更新 $ rosdep update #配置环境变量 source $ echo "source /opt/ros/melodic/setup.bash" >> ~/.bashrc $ source ~/.bashrc #创建工作空间 $ mkdir -p ~/catkin_ws/src $ cd ~/catkin_ws/src $ catkin_init_workspace #编译并配置工作空间 $ cd .. $ catkin_make $ echo "source ~/catkin_ws/devel/setup.bash">> ~/.bashrc

Reference

[1] ROS Melodic安装教程[EB/OL]. 2019. [2] ROS国内镜像源[EB/OL]. 2019.