解决Tensorboard端口被占用

报错信息：

E1220 06:55:50.868322 MainThread program.py:267] TensorBoard attempted to bind to port 6006, but it was already in use
E1220 06:55:50.868322 139684389615360 program.py:267] TensorBoard attempted to bind to port 6006, but it was already in use
TensorBoard attempted to bind to port 6006, but it was already in use

导致上面的错误，是由于6006号端口被其他进程所占用。注意，在关闭tensorboard时，应该使用Press CTRL+C to quit，而不是Press CTRL+Z to quit

解决方案一：关掉占用端口的进程：

第一步：查看端口占用：

# 如果找不到lsof命令，则需要下载lsof  $ apt-get install lsof
lsof -i:6006

 结果如下：

COMMAND     PID USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
tensorboa 21144 root    3u  IPv4 4337149      0t0  TCP *:6006 (LISTEN)

第二步：关掉占用端口的进程

kill -9 21144  # -9表示永久关闭，21144为PID的值

解决方案二：更改Tensorboard启动的默认端口

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