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Merge pull request #586 from dkerr64/ssh-deploy

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Ssh deploy
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141
deploy/README.md
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@ -31,7 +31,146 @@ acme.sh --deploy -d ftp.example.com --deploy-hook kong
## 3. Deploy the cert to remote server through SSH access
(TODO)
The ssh deploy plugin allows you to deploy certificates to a remote host
using SSH command to connect to the remote server. The ssh plugin is invoked
with the following command...
```sh
acme.sh --deploy -d example.com --deploy-hook ssh
```
Prior to running this for the first time you must tell the plugin where
and how to deploy the certificates. This is done by exporting the following
environment variables. This is not required for subsequent runs as the
values are stored by acme.sh in the domain configuration files.
Required...
```
export DEPLOY_SSH_USER=username
```
Optional...
```
export DEPLOY_SSH_CMD=custom ssh command
export DEPLOY_SSH_SERVER=url or ip address of remote host
export DEPLOY_SSH_KEYFILE=filename for private key
export DEPLOY_SSH_CERTFILE=filename for certificate file
export DEPLOY_SSH_CAFILE=filename for intermediate CA file
export DEPLOY_SSH_FULLCHAIN=filename for fullchain file
export DEPLOY_SSH_REMOTE_CMD=command to execute on remote host
export DEPLOY_SSH_BACKUP=yes or no
```
**DEPLOY_SSH_USER**
Username at the remote host that SSH will login with. Note that
SSH must be able to login to remote host without a password... SSH Keys
must have been exchanged with the remote host. Validate and test that you
can login to USER@URL from the host running acme.sh before using this script.
The USER@URL at the remote server must also have has permissions to write to
the target location of the certificate files and to execute any commands
(e.g. to stop/start services).
**DEPLOY_SSH_CMD**
You can customize the ssh command used to connect to the remote host. For example
if you need to connect to a specific port at the remote server you can set this
to, for example, "ssh -p 22" or to use `sshpass` to provide password inline
instead of exchanging ssh keys (this is not recommended, using keys is
more secure).
**DEPLOY_SSH_SERVER**
URL or IP Address of the remote server. If not provided then the domain
name provided on the acme.sh --deploy command line is used.
**DEPLOY_SSH_KEYFILE**
Target filename for the private key issued by LetsEncrypt.
**DEPLOY_SSH_CERTFILE**
Target filename for the certificate issued by LetsEncrypt.
If this is the same as the previous filename (for keyfile) then it is
appended to the same file.
**DEPLOY_SSH_CAFILE**
Target filename for the CA intermediate certificate issued by LetsEncrypt.
If this is the same as a previous filename (for keyfile or certfile) then
it is appended to the same file.
**DEPLOY_SSH_FULLCHAIN**
Target filename for the fullchain certificate issued by LetsEncrypt.
If this is the same as a previous filename (for keyfile, certfile or
cafile) then it is appended to the same file.
**DEPLOY_SSH_REMOTE_CMD**
Command to execute on the remote server after copying any certificates. This
could be any additional command required for example to stop and restart
the service.
**DEPLOY_SSH_BACKUP**
Before writing a certificate file to the remote server the existing
certificate will be copied to a backup directory on the remote server.
These are placed in a hidden directory in the home directory of the SSH
user
```sh
~/.acme_ssh_deploy/[domain name]-backup-[timestamp]
```
Any backups older than 180 days will be deleted when new certificates
are deployed. This defaults to "yes" set to "no" to disable backup.
###Eamples using SSH deploy
The following example illustrates deploying certifcates to a QNAP NAS
(tested with QTS version 4.2.3)
```sh
export DEPLOY_SSH_USER="admin"
export DEPLOY_SSH_KEYFILE="/etc/stunnel/stunnel.pem"
export DEPLOY_SSH_CERTFILE="/etc/stunnel/stunnel.pem"
export DEPLOY_SSH_CAFILE="/etc/stunnel/uca.pem"
export DEPLOY_SSH_REMOTE_CMD="/etc/init.d/stunnel.sh restart"
acme.sh --deploy -d qnap.example.com --deploy-hook ssh
```
Note how in this example both the private key and certificate point to
the same file. This will result in the certificate being appended
to the same file as the private key... a common requirement of several
services.
The next example illustates deploying certificates to a Unifi
Contolller (tested with version 5.4.11).
```sh
export DEPLOY_SSH_USER="root"
export DEPLOY_SSH_KEYFILE="/var/lib/unifi/unifi.example.com.key"
export DEPLOY_SSH_FULLCHAIN="/var/lib/unifi/unifi.example.com.cer"
export DEPLOY_SSH_REMOTE_CMD="openssl pkcs12 -export \
-inkey /var/lib/unifi/unifi.example.com.key \
-in /var/lib/unifi/unifi.example.com.cer \
-out /var/lib/unifi/unifi.example.com.p12 \
-name ubnt -password pass:temppass \
&& keytool -importkeystore -deststorepass aircontrolenterprise \
-destkeypass aircontrolenterprise \
-destkeystore /var/lib/unifi/keystore \
-srckeystore /var/lib/unifi/unifi.example.com.p12 \
-srcstoretype PKCS12 -srcstorepass temppass -alias ubnt -noprompt \
&& service unifi restart"
acme.sh --deploy -d unifi.example.com --deploy-hook ssh
```
In this exmple we execute several commands on the remote host
after the certificate files have been copied... to generate a pkcs12 file
compatible with Unifi, to import it into the Unifi keystore and then finaly
to restart the service.
Note also that once the certificate is imported
into the keystore the individual certificate files are no longer
required. We could if we desired delete those files immediately. If we
do that then we should disable backup at the remote host (as there are
no files to backup -- they were erased during deployment). For example...
```sh
export DEPLOY_SSH_BACKUP=no
# modify the end of the remote command...
&& rm /var/lib/unifi/unifi.example.com.key \
/var/lib/unifi/unifi.example.com.cer \
/var/lib/unifi/unifi.example.com.p12 \
&& service unifi restart
```
## 4. Deploy the cert to local vsftpd server

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deploy/ssh.sh Normal file
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#!/usr/bin/env sh
# Script to deploy certificates to remote server by SSH
# Note that SSH must be able to login to remote host without a password...
# SSH Keys must have been exchanged with the remote host. Validate and
# test that you can login to USER@SERVER from the host running acme.sh before
# using this script.
#
# The following variables exported from environment will be used.
# If not set then values previously saved in domain.conf file are used.
#
# Only a username is required. All others are optional.
#
# The following examples are for QNAP NAS running QTS 4.2
# export DEPLOY_SSH_CMD="" # defaults to ssh
# export DEPLOY_SSH_USER="admin" # required
# export DEPLOY_SSH_SERVER="qnap" # defaults to domain name
# export DEPLOY_SSH_KEYFILE="/etc/stunnel/stunnel.pem"
# export DEPLOY_SSH_CERTFILE="/etc/stunnel/stunnel.pem"
# export DEPLOY_SSH_CAFILE="/etc/stunnel/uca.pem"
# export DEPLOY_SSH_FULLCHAIN=""
# export DEPLOY_SSH_REMOTE_CMD="/etc/init.d/stunnel.sh restart"
# export DEPLOY_SSH_BACKUP="" # yes or no, default to yes
#
######## Public functions #####################
#domain keyfile certfile cafile fullchain
ssh_deploy() {
_cdomain="$1"
_ckey="$2"
_ccert="$3"
_cca="$4"
_cfullchain="$5"
_cmdstr=""
_homedir='~'
_backupprefix="$_homedir/.acme_ssh_deploy/$_cdomain-backup"
_backupdir="$_backupprefix-$(_utc_date | tr ' ' '-')"
if [ -f "$DOMAIN_CONF" ]; then
# shellcheck disable=SC1090
. "$DOMAIN_CONF"
fi
_debug _cdomain "$_cdomain"
_debug _ckey "$_ckey"
_debug _ccert "$_ccert"
_debug _cca "$_cca"
_debug _cfullchain "$_cfullchain"
# USER is required to login by SSH to remote host.
if [ -z "$DEPLOY_SSH_USER" ]; then
if [ -z "$Le_Deploy_ssh_user" ]; then
_err "DEPLOY_SSH_USER not defined."
return 1
fi
else
Le_Deploy_ssh_user="$DEPLOY_SSH_USER"
_savedomainconf Le_Deploy_ssh_user "$Le_Deploy_ssh_user"
fi
# SERVER is optional. If not provided then use _cdomain
if [ -n "$DEPLOY_SSH_SERVER" ]; then
Le_Deploy_ssh_server="$DEPLOY_SSH_SERVER"
_savedomainconf Le_Deploy_ssh_server "$Le_Deploy_ssh_server"
elif [ -z "$Le_Deploy_ssh_server" ]; then
Le_Deploy_ssh_server="$_cdomain"
fi
# CMD is optional. If not provided then use ssh
if [ -n "$DEPLOY_SSH_CMD" ]; then
Le_Deploy_ssh_cmd="$DEPLOY_SSH_CMD"
_savedomainconf Le_Deploy_ssh_cmd "$Le_Deploy_ssh_cmd"
elif [ -z "$Le_Deploy_ssh_cmd" ]; then
Le_Deploy_ssh_cmd="ssh"
fi
# BACKUP is optional. If not provided then default to yes
if [ "$DEPLOY_SSH_BACKUP" = "no" ]; then
Le_Deploy_ssh_backup="no"
elif [ -z "$Le_Deploy_ssh_backup" ]; then
Le_Deploy_ssh_backup="yes"
fi
_savedomainconf Le_Deploy_ssh_backup "$Le_Deploy_ssh_backup"
_info "Deploy certificates to remote server $Le_Deploy_ssh_user@$Le_Deploy_ssh_server"
# KEYFILE is optional.
# If provided then private key will be copied to provided filename.
if [ -n "$DEPLOY_SSH_KEYFILE" ]; then
Le_Deploy_ssh_keyfile="$DEPLOY_SSH_KEYFILE"
_savedomainconf Le_Deploy_ssh_keyfile "$Le_Deploy_ssh_keyfile"
fi
if [ -n "$Le_Deploy_ssh_keyfile" ]; then
if [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_keyfile $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_ckey")\" > $Le_Deploy_ssh_keyfile;"
_info "will copy private key to remote file $Le_Deploy_ssh_keyfile"
fi
# CERTFILE is optional.
# If provided then private key will be copied or appended to provided filename.
if [ -n "$DEPLOY_SSH_CERTFILE" ]; then
Le_Deploy_ssh_certfile="$DEPLOY_SSH_CERTFILE"
_savedomainconf Le_Deploy_ssh_certfile "$Le_Deploy_ssh_certfile"
fi
if [ -n "$Le_Deploy_ssh_certfile" ]; then
_pipe=">"
if [ "$Le_Deploy_ssh_certfile" = "$Le_Deploy_ssh_keyfile" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_certfile $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_ccert")\" $_pipe $Le_Deploy_ssh_certfile;"
_info "will copy certificate to remote file $Le_Deploy_ssh_certfile"
fi
# CAFILE is optional.
# If provided then CA intermediate certificate will be copied or appended to provided filename.
if [ -n "$DEPLOY_SSH_CAFILE" ]; then
Le_Deploy_ssh_cafile="$DEPLOY_SSH_CAFILE"
_savedomainconf Le_Deploy_ssh_cafile "$Le_Deploy_ssh_cafile"
fi
if [ -n "$Le_Deploy_ssh_cafile" ]; then
_pipe=">"
if [ "$Le_Deploy_ssh_cafile" = "$Le_Deploy_ssh_keyfile" ] \
|| [ "$Le_Deploy_ssh_cafile" = "$Le_Deploy_ssh_certfile" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_cafile $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_cca")\" $_pipe $Le_Deploy_ssh_cafile;"
_info "will copy CA file to remote file $Le_Deploy_ssh_cafile"
fi
# FULLCHAIN is optional.
# If provided then fullchain certificate will be copied or appended to provided filename.
if [ -n "$DEPLOY_SSH_FULLCHAIN" ]; then
Le_Deploy_ssh_fullchain="$DEPLOY_SSH_FULLCHAIN"
_savedomainconf Le_Deploy_ssh_fullchain "$Le_Deploy_ssh_fullchain"
fi
if [ -n "$Le_Deploy_ssh_fullchain" ]; then
_pipe=">"
if [ "$Le_Deploy_ssh_fullchain" = "$Le_Deploy_ssh_keyfile" ] \
|| [ "$Le_Deploy_ssh_fullchain" = "$Le_Deploy_ssh_certfile" ] \
|| [ "$Le_Deploy_ssh_fullchain" = "$Le_Deploy_ssh_cafile" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_fullchain $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_cfullchain")\" $_pipe $Le_Deploy_ssh_fullchain;"
_info "will copy fullchain to remote file $Le_Deploy_ssh_fullchain"
fi
# REMOTE_CMD is optional.
# If provided then this command will be executed on remote host.
if [ -n "$DEPLOY_SSH_REMOTE_CMD" ]; then
Le_Deploy_ssh_remote_cmd="$DEPLOY_SSH_REMOTE_CMD"
_savedomainconf Le_Deploy_ssh_remote_cmd "$Le_Deploy_ssh_remote_cmd"
fi
if [ -n "$Le_Deploy_ssh_remote_cmd" ]; then
_cmdstr="$_cmdstr $Le_Deploy_ssh_remote_cmd;"
_info "Will execute remote command $Le_Deploy_ssh_remote_cmd"
fi
if [ -z "$_cmdstr" ]; then
_err "No remote commands to excute. Failed to deploy certificates to remote server"
return 1
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# run cleanup on the backup directory, erase all older
# than 180 days (15552000 seconds).
_cmdstr="{ now=\"\$(date -u +%s)\"; for fn in $_backupprefix*; \
do if [ -d \"\$fn\" ] && [ \"\$(expr \$now - \$(date -ur \$fn +%s) )\" -ge \"15552000\" ]; \
then rm -rf \"\$fn\"; echo \"Backup \$fn deleted as older than 180 days\"; fi; done; }; $_cmdstr"
# Alternate version of above... _cmdstr="find $_backupprefix* -type d -mtime +180 2>/dev/null | xargs rm -rf; $_cmdstr"
# Create our backup directory for overwritten cert files.
_cmdstr="mkdir -p $_backupdir; $_cmdstr"
_info "Backup of old certificate files will be placed in remote directory $_backupdir"
_info "Backup directories erased after 180 days."
fi
_debug "Remote commands to execute: $_cmdstr"
_info "Submitting sequence of commands to remote server by ssh"
# quotations in bash cmd below intended. Squash travis spellcheck error
# shellcheck disable=SC2029
$Le_Deploy_ssh_cmd -T "$Le_Deploy_ssh_user@$Le_Deploy_ssh_server" sh -c "'$_cmdstr'"
_ret="$?"
if [ "$_ret" != "0" ]; then
_err "Error code $_ret returned from $Le_Deploy_ssh_cmd"
fi
return $_ret
}