一、问题无法ssh直接连接到服务器
[C:\~]$ ssh 192.168.7.77
Connecting to 192.168.7.77:22...
Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.
Connection closing...Socket close.
Connect...
之前遇到很多selinux的问题，主要是服务方面的，例如mysql连接问题，单这次遇到这索性记录一下，主要开启关闭配置
现象
file_put_contents(Dockerfile): failed to open stream: <em>Permission</em> <em>denied</em> in
1、查看
[root@localhost Docker-Web]#getenforce
Enforcing
[ro...
OS：CentOS 7
在CentOS 7 下使用virt-manager增加虚拟机，配置成功后，启动虚拟机时，出现一下提示：
qemu-kvm: -drive file=/var/lib/libvirt/images/AloeCCnode_v2.1.qcow2,if=none,id=drive-ide0-0-0,format=qcow2: could not open disk im
在linux上安装有些东西时会出现 <em>Permission</em> <em>denied</em> 的情况：以下就是解决它的办法之一
编辑/etc/selinux/config，找到这段：
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing
ssh登陆服务器，输入密码后却一直不能登陆进去，输出的调试信息是：
```
wangxiaoxiaodeMacBook-Air:.ssh wangxiaoxiao$ ssh -v -p 1029 xxwang@115.156.164.251
OpenSSH_6.9p1, LibreSSL 2.1.8
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug1: Connecting to 115.156.164.251 [115.156.164.251] port 1029.
debug1: Connection established.
debug1: identity file /Users/wangxiaoxiao/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/wangxiaoxiao/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/wangxiaoxiao/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/wangxiaoxiao/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/wangxiaoxiao/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/wangxiaoxiao/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/wangxiaoxiao/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/wangxiaoxiao/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.9
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.3
debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.3 pat OpenSSH_6.6.1* compat 0x04000000
debug1: Authenticating to 115.156.164.251:1029 as 'xxwang'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client chacha20-poly1305@openssh.com none
debug1: kex: client->server chacha20-poly1305@openssh.com none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:hEan0tTVdOIgIhYZnv9cee++XRQXxts3RWehu5+cDis
debug1: Host '[115.156.164.251]:1029' is known and matches the ECDSA host key.
debug1: Found key in /Users/wangxiaoxiao/.ssh/known_hosts:1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/wangxiaoxiao/.ssh/id_rsa
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /Users/wangxiaoxiao/.ssh/id_dsa
debug1: Trying private key: /Users/wangxiaoxiao/.ssh/id_ecdsa
debug1: Trying private key: /Users/wangxiaoxiao/.ssh/id_ed25519
debug1: Next authentication method: password
xxwang@115.156.164.251's password:
debug1: Authentications that can continue: publickey,password
<em>Permission</em> <em>denied</em>, please try again.
xxwang@115.156.164.251's password:
debug1: Authentications that can continue: publickey,password
<em>Permission</em> <em>denied</em>, please try again.
xxwang@115.156.164.251's password:
debug1: Authentications that can continue: publickey,password
debug1: No more authentication methods to try.
<em>Permission</em> <em>denied</em> (publickey,password).```
```
然后我谷歌了一下，按照网上的方法，把.ssh删了，再重新ssh-keygen重新生成，后再ssh，依然存在这个同样的问题？
以orguser身份登录后执行命令
su - newuser
输入正确的密码以后，报错：
Account locked due to 216 failed logins
su: <em>Permission</em> <em>denied</em>
网上资料说检查su命令的setuid属性位，这个是正常的。
再查，发现系统为了提高安全性，有一个控制su权限的wheel组。
当su权限做了限制以后，只有wheel组...
After install weblogic or maybe update fromrepository, the Ubuntu could not restart/ boot up.
login as user and gotmessageas title.
issue isthe permissions of /<em>bin</em> was changed to 750...
Git Init Failed Cannot Run Git: Failed to start Git process Cannot run program "/usr/local/git"(in directory "."):error=13, <em>Permission</em> <em>denied</em>
解决办法：
打开配置界面：将错误的路径修改为正确的路径如下，然后按test 就可以测试成功了。
一开始...
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