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Simplified saving the configuration as own VOLUME and so removed symlink hack

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This commit is contained in:
Christian Luginbühl 2015-03-11 23:35:56 +01:00
parent d7beb4a790
commit e520b15129
3 changed files with 21 additions and 19 deletions
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4
Dockerfile
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@ -12,9 +12,11 @@ RUN apt-get update && \
apt-get clean && \ apt-get clean && \
rm -rf /var/lib/apt/lists/* rm -rf /var/lib/apt/lists/*
RUN mv /etc/ldap /etc/ldap.dist
EXPOSE 389 EXPOSE 389
VOLUME ["/var/lib/ldap"] VOLUME ["/etc/ldap", "/var/lib/ldap"]
COPY entrypoint.sh /entrypoint.sh COPY entrypoint.sh /entrypoint.sh

16
README.md
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@ -9,13 +9,13 @@ in the configuration.
NOTE: On purpose, there is no secured channel (TLS/SSL), because I believe that NOTE: On purpose, there is no secured channel (TLS/SSL), because I believe that
this service should never be exposed to the internet, but only be used directly this service should never be exposed to the internet, but only be used directly
by Docker containers using the `--link` option. by other Docker containers using the `--link` option.
Usage Usage
----- -----
The most simple form would be to start the application like so (however this is The most simple form would be to start the application like so (however this is
not the recommended way - see above): not the recommended way - see below):
docker run -d -p 389:389 -e SLAPD_PASSWORD=mysecretpassword -e SLAPD_DOMAIN=ldap.example.org dinkel/openldap docker run -d -p 389:389 -e SLAPD_PASSWORD=mysecretpassword -e SLAPD_DOMAIN=ldap.example.org dinkel/openldap
@ -34,7 +34,7 @@ OpenLDAP daemon is listening to (the port is the default port `389`).
Configuration (environment variables) Configuration (environment variables)
------------------------------------- -------------------------------------
For the first run one has to set at least two envrironment variables. The first For the first run, one has to set at least two environment variables. The first
SLAPD_PASSWORD SLAPD_PASSWORD
@ -77,8 +77,8 @@ envirnonment variables are not evaluated anymore.
Data persistence Data persistence
---------------- ----------------
The image exposes one directory (`VOLUME ["/var/lib/ldap"]`). It both holds the The image exposes two directories (`VOLUME ["/etc/ldap", "/var/lib/ldap"]`).
database and the configuration (which is symlinked in a pretty hacky way - see The first holds the "static" configurationm while the second holds the actual
the `entrypoint.sh` file if interested). Please make sure that this directory is database. Please make sure that these two directories are saved (in a data-only
saved (in a data-only container or alike) in order to make sure that everything container or alike) in order to make sure that everything is restored after a
is restored after a new restart of the container. restart of the container.

20
entrypoint.sh
View file

@ -3,27 +3,24 @@ set -e
chown openldap:openldap /var/lib/ldap/ chown openldap:openldap /var/lib/ldap/
if [[ -d /var/lib/ldap/config ]]; then if [[ ! -d /etc/ldap/slapd.d ]]; then
rm -rf /etc/ldap
ln -s /var/lib/ldap/config /etc/ldap
else
if [[ -z "$SLAPD_PASSWORD" ]]; then if [[ -z "$SLAPD_PASSWORD" ]]; then
echo >&2 "Error: slapd not configured and SLAPD_PASSWORD not set" echo -n >&2 "Error: Container not configured and SLAPD_PASSWORD not set. "
echo >&2 "Did you forget to add -e SLAPD_PASSWORD=... ?" echo >&2 "Did you forget to add -e SLAPD_PASSWORD=... ?"
exit 1 exit 1
fi fi
if [[ -z "$SLAPD_DOMAIN" ]]; then if [[ -z "$SLAPD_DOMAIN" ]]; then
echo >&2 "Error: slapd not configured and SLAPD_DOMAIN not set" echo -n >&2 "Error: Container not configured and SLAPD_DOMAIN not set. "
echo >&2 "Did you forget to add -e SLAPD_DOMAIN=... ?" echo >&2 "Did you forget to add -e SLAPD_DOMAIN=... ?"
exit 1 exit 1
fi fi
SLAPD_ORGANIZATION="${SLAPD_ORGANIZATION:-${SLAPD_DOMAIN}}" SLAPD_ORGANIZATION="${SLAPD_ORGANIZATION:-${SLAPD_DOMAIN}}"
cp -a /etc/ldap.dist/* /etc/ldap
cat <<-EOF | debconf-set-selections cat <<-EOF | debconf-set-selections
slapd slapd/no_configuration boolean false slapd slapd/no_configuration boolean false
slapd slapd/password1 password $SLAPD_PASSWORD slapd slapd/password1 password $SLAPD_PASSWORD
@ -68,9 +65,12 @@ EOF
slapadd -n0 -F /etc/ldap/slapd.d -l "/etc/ldap/schema/${schema}.ldif" >/dev/null 2>&1 slapadd -n0 -F /etc/ldap/slapd.d -l "/etc/ldap/schema/${schema}.ldif" >/dev/null 2>&1
done done
fi fi
else
slapd_configs_in_env=`env | grep 'SLAPD_'`
mv /etc/ldap /var/lib/ldap/config if [ -n "${slapd_configs_in_env:+x}" ]; then
ln -s /var/lib/ldap/config /etc/ldap echo "Info: Container already configured, therefore ignoring SLAPD_xxx environment variables"
fi
fi fi
exec "$@" exec "$@"