帮助调整 Courier-authdaemon 启动脚本

Question

问题是 Xenial 16.04 破坏了 sasl PAM 并切换到 systemd 启动。您为 courier-authdaemon 编辑的用于 chrooted 运行的 init.d 脚本从未运行过。我费了好大劲才发现这一点。

我现在运行与您类似的设置（postfix chrooted 加上针对 courier 的身份验证，而之前我在 14.04 Trusty 上使用 SASL PAM）。

这是我当前的设置：

配置针对快递员进行身份验证

vi /etc/postfix/sasl/smtpd.conf

#pwcheck_method: saslauthd
#mech_list: plain login
#allow_plaintext: true
pwcheck_method: authdaemond
authdaemond_path: /var/run/courier/authdaemon/socket
mech_list: plain login
log_level: 9

创建启动脚本来创建 chroot 目录和符号链接

vi /etc/systemd/system/courier-authdaemon.sh

#! /bin/sh -e
#
# Starts:          courier-authdaemon

prefix="/usr"
exec_prefix=${prefix}
sysconfdir="/etc/courier"
sbindir="${exec_prefix}/sbin"
daemonscript="${sbindir}/authdaemond"
rundir_courier="/var/run/courier"
rundir="/var/run/courier/authdaemon"
rundir_chroot="/var/spool/postfix/var/run/courier/authdaemon"
pidfile="${rundir}/pid"
/bin/echo "Checkpoint 1 Courier authentication services" "authdaemond" >/log.txt

# Check for a leftover init script
if [ ! -x $daemonscript ]; then
        exit 0
fi
/bin/echo "Checkpoint 2 Courier authentication services" "authdaemond" >>/log.txt

        # Start daemon.
        cd /
        /bin/echo "Starting Courier authentication services" "authdaemond" >>/log.txt
        # RAH 20170123. Change to chroot postfix setup
        if [ ! -d "$rundir_courier" ]; then
                /bin/echo  "making parent location" "authdaemond" >>/log.txt
                /bin/mkdir -m 0775 $rundir_courier
                /bin/chown daemon:daemon $rundir_courier
        # set file context for SELinux (#668564)
        [ -x /sbin/restorecon ] && /sbin/restorecon $rundir_courier
        fi
        # clean up chroot location
        if [ -d "$rundir_chroot" ]; then
                /bin/echo  "Cleaning chroot location" "authdaemond" >>/log.txt
                /bin/rm -rf "$rundir_chroot"
        fi
        # remove traditional directory if it exists
        if [ -L "$rundir" ]; then
                /bin/echo  "Unlinking traditional location" "authdaemond" >>/log.txt
                /usr/bin/unlink "$rundir"
        fi
        if [ -d "$rundir" ]; then
                /bin/echo  "Cleaning traditional location" "authdaemond" >>/log.txt
                /bin/rm -rf "$rundir"
        fi
        # make new chroot location
        if [ ! -d "$rundir_chroot" ]; then
                /bin/echo  "making chroot location" "authdaemond" >>/log.txt
                /bin/mkdir -p "$rundir_chroot"
                # /bin/echo mkdir -p "$rundir_chroot"
                /bin/chown daemon:daemon "$rundir_chroot"
                [ -x /sbin/restorecon ] && /sbin/restorecon $rundir_chroot
        fi
        # link chroot location to the original location
        if [ ! -L "$rundir" ]; then
                /bin/echo  "linking chroot location" "authdaemond" >>/log.txt
                /bin/ln -sn "$rundir_chroot" "$rundir"
                # /bin/echo /bin/ln -sfn "$rundir_chroot" "$rundir"
        fi
#       $daemonscript start

exit 0

通过 systemd 创建启动覆盖
```
sudo systemctl edit courier-authdaemon
```
编辑 systemd 覆盖的内容以触发上述 shell 脚本：

$ more /etc/systemd/system/courier-authdaemon.service.d/override.conf
```
[Service]
ExecStartPre=/etc/systemd/system/courier-authdaemon.sh
```

Answer 1