嵌入式LINUX移植、配置ssh_嵌入式linux调试ssh

• 编译

https://quantum6.blog.csdn.net/article/details/136299665

编译时指定prefix，产生的文件会自带这个目录。所以直接忽略。

./configure
 
# 不指定编译路径，手动复制。

• 复制

编译后的整个目录打包，复制到开发板。写个脚本，内容如下，执行：

INSTALL=/usr/bin/install
MKDIR=/usr/bin/mkdir
 
${MKDIR} -p -m 0755 /var/empty
 
U_L_SBIN=/usr/local/sbin
echo
echo ${U_L_SBIN}
${MKDIR} -p ${U_L_SBIN}
${INSTALL} -c -m 0755 sshd                ${U_L_SBIN}/sshd
 
U_L_BIN=/usr/local/bin
echo
echo ${U_L_BIN}
${MKDIR} -p ${U_L_BIN}
${INSTALL} -c -m 0755 ssh                 ${U_L_BIN}/ssh
${INSTALL} -c -m 0755 scp                 ${U_L_BIN}/scp
${INSTALL} -c -m 0755 ssh-add             ${U_L_BIN}/ssh-add
${INSTALL} -c -m 0755 ssh-agent           ${U_L_BIN}/ssh-agent
${INSTALL} -c -m 0755 ssh-keygen          ${U_L_BIN}/ssh-keygen
${INSTALL} -c -m 0755 ssh-keyscan         ${U_L_BIN}/ssh-keyscan
${INSTALL} -c -m 0755 sftp                ${U_L_BIN}/sftp
 
U_L_LIBEXEC=/usr/local/libexec
echo
echo ${U_L_LIBEXEC}
${MKDIR} -p ${U_L_LIBEXEC}
${INSTALL} -c -m 4711 ssh-keysign         ${U_L_LIBEXEC}/ssh-keysign
${INSTALL} -c -m 0755 ssh-pkcs11-helper   ${U_L_LIBEXEC}/ssh-pkcs11-helper
${INSTALL} -c -m 0755 ssh-sk-helper       ${U_L_LIBEXEC}/ssh-sk-helper
${INSTALL} -c -m 0755 sftp-server         ${U_L_LIBEXEC}/sftp-server
 
U_L_S_M_MAN1=/usr/local/share/man/man1
echo
echo ${U_L_S_M_MAN1}
${MKDIR} -p ${U_L_S_M_MAN1}
${INSTALL} -c -m 644 ssh.1.out               ${U_L_S_M_MAN1}/ssh.1
${INSTALL} -c -m 644 scp.1.out               ${U_L_S_M_MAN1}/scp.1
${INSTALL} -c -m 644 ssh-add.1.out           ${U_L_S_M_MAN1}/ssh-add.1
${INSTALL} -c -m 644 ssh-agent.1.out         ${U_L_S_M_MAN1}/ssh-agent.1
${INSTALL} -c -m 644 ssh-keygen.1.out        ${U_L_S_M_MAN1}/ssh-keygen.1
${INSTALL} -c -m 644 ssh-keyscan.1.out       ${U_L_S_M_MAN1}/ssh-keyscan.1
${INSTALL} -c -m 644 sftp.1.out              ${U_L_S_M_MAN1}/sftp.1
 
U_L_S_M_MAN5=/usr/local/share/man/man5
echo
echo ${U_L_S_M_MAN5}
${MKDIR} -p ${U_L_S_M_MAN5}
${INSTALL} -c -m 644 moduli.5.out            ${U_L_S_M_MAN5}/moduli.5
${INSTALL} -c -m 644 sshd_config.5.out       ${U_L_S_M_MAN5}/sshd_config.5
${INSTALL} -c -m 644 ssh_config.5.out        ${U_L_S_M_MAN5}/ssh_config.5
 
U_L_S_M_MAN8=/usr/local/share/man/man8
echo
echo ${U_L_S_M_MAN8}
${MKDIR} -p ${U_L_S_M_MAN8}
${INSTALL} -c -m 644 sshd.8.out              ${U_L_S_M_MAN8}/sshd.8
${INSTALL} -c -m 644 sftp-server.8.out       ${U_L_S_M_MAN8}/sftp-server.8
${INSTALL} -c -m 644 ssh-keysign.8.out       ${U_L_S_M_MAN8}/ssh-keysign.8
${INSTALL} -c -m 644 ssh-pkcs11-helper.8.out ${U_L_S_M_MAN8}/ssh-pkcs11-helper.8
${INSTALL} -c -m 644 ssh-sk-helper.8.out     ${U_L_S_M_MAN8}/ssh-sk-helper.8
 
U_L_ETC=/usr/local/etc
echo
echo ${U_L_ETC}
${MKDIR} -p ${U_L_ETC}
${INSTALL} -c -m 644 ssh_config.out          ${U_L_ETC}/ssh_config
${INSTALL} -c -m 644 sshd_config.out         ${U_L_ETC}/sshd_config
${INSTALL} -c -m 644 moduli.out              ${U_L_ETC}/moduli

•  准备工作

ssh-keygen -A

• 产生KEY（实际上已经复制，不需要）

ssh-keygen -t rsa   -f ssh_host_rsa_key     -N ""
ssh-keygen -t dsa   -f ssh_host_dsa_key     -N ""
ssh-keygen -t ecdsa -f ssh_host_ecdsa_key   -N ""
ssh-keygen -t dsa   -f ssh_host_ed25519_key -N ""

• 增加sshd用户

sshd: Privilege separation user sshd does not exist-CSDN博客

• 缺少依赖库

我的板子缺少libz.so/libcrypto.so，复制到/lib64下，解决。

/usr/local/sbin/sshd
sshd: error while loading shared libraries: libz.so.1: cannot open shared object file: No such file or directory
 
 
lrwxrwxrwx    1 root     root             9 Jan  1 00:15 /lib64/libz.so -> libz.so.1
lrwxrwxrwx    1 root     root            14 Jan  1 00:15 /lib64/libz.so.1 -> libz.so.1.2.11
-rw-r-----    1 root     root        117032 Jan  1 00:15 /lib64/libz.so.1.2.11
 
lrwxrwxrwx    1 root     root            16 Jan  1 00:15 /lib64/libcrypto.so -> libcrypto.so.1.1
-rw-r-----    1 root     root       2711280 Jan  1 00:15 /lib64/libcrypto.so.1.1

• 检查配置文件是否正确

/usr/local/sbin/sshd -t -f /usr/local/etc/sshd_config

• 修改配置文件，允许ROOT登录

通过SSH使用ROOT账号无法登录，提示禁止访问Access denied_ssh root拒绝访问-CSDN博客

• 运行

/usr/local/sbin/sshd -f /usr/local/etc/sshd_config
 
ps | grep sshd
1501 root      0:00 sshd: /usr/local/sbin/sshd -f /usr/local/etc/sshd_config [listener

可以看到已经启动到后台了。可以使用ssh登录了。