root@ecs-:/home/workspaces/tx# git pull

ssh: Could not resolve hostname **.com: Temporary failure in name resolution

fatal: Could not read from remote repository.


Please make sure you have the correct access rights

and the repository exists.


安装了华为云服务器之后，发现ddos攻击不少，凌晨磁盘读写几兆每秒，于是设立了安全组。

后来发现git pull命令出现了如上的异常。

最后试了一下，error描述，ssh could not resolve hostname了，所以要开放ssh的tcp端口，不仅出方向要设立，入方向也要放开。