From eaa8ee9bcea4988f8aee9725bf815f1e81a23151 Mon Sep 17 00:00:00 2001
From: Greg Fausak <greg@tacodata.com>
Date: Fri, 6 Feb 2015 17:29:27 +0000
Subject: [PATCH 1/3] added trust on samenet in pg_hba

---
 start | 1 +
 1 file changed, 1 insertion(+)

diff --git a/start b/start
index 6193522..d745d12 100755
--- a/start
+++ b/start
@@ -29,6 +29,7 @@ EOF
 
 # allow remote connections to postgresql database
 cat >> ${PG_CONFDIR}/pg_hba.conf <<EOF
+host    all             all             samenet                 trust
 host    all             all             0.0.0.0/0               md5
 EOF
 

From 1873e0d38963509135800f8286f028c6c6271763 Mon Sep 17 00:00:00 2001
From: Greg Fausak <greg@tacodata.com>
Date: Sat, 7 Feb 2015 15:30:44 +0000
Subject: [PATCH 2/3] make the trust samenet behavior triggered by the
 PSQL_TRUST_LOCALNET environment variable

---
 README.md | 17 +++++++++++++++++
 start     | 12 +++++++++++-
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 99dfc97..1a42ede 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,23 @@ docker run --name postgresql -d \
 
 , will create a user *dbuser* with the password *dbpass*. It will also create a database named *dbname* and the *dbuser* user will have full access to the *dbname* database.
 
+The PSQL_TRUST_LOCALNET environment variable can be used to configure postgres to trust connections on the same network.  This
+is handy for other containers to connect without authentication. To enable this behavior, set PSQL_TRUST_LOCALNET to Y.
+
+For example,
+
+```bash
+docker run --name postgresql -d \
+  -e 'PSQL_TRUST_LOCALNET=Y' \
+  sameersbn/postgresql:9.4
+```
+
+This has the effect of adding the following to the pg_hba.conf file:
+
+```
+host    all             all             samenet                 trust
+```
+
 # Configuration
 
 ## Data Store
diff --git a/start b/start
index d745d12..6a0ae90 100755
--- a/start
+++ b/start
@@ -6,6 +6,11 @@ PG_CONFDIR="/etc/postgresql/${PG_VERSION}/main"
 PG_BINDIR="/usr/lib/postgresql/${PG_VERSION}/bin"
 PG_DATADIR="${PG_HOME}/${PG_VERSION}/main"
 
+# set this env variable to Y to enable a line in the
+# pg_hba.conf file to trust samenet.  this can be used to connect
+# from other containers on the same host without authentication
+PSQL_TRUST_LOCALNET="N"
+
 DB_NAME=${DB_NAME:-}
 DB_USER=${DB_USER:-}
 DB_PASS=${DB_PASS:-}
@@ -27,9 +32,14 @@ cat >> ${PG_CONFDIR}/postgresql.conf <<EOF
 listen_addresses = '*'
 EOF
 
+trust_local="host    all             all             samenet                 trust"
+if [ ${PSQL_TRUST_LOCALNET} = "Y" ]; then
+  echo "Enabling trust samenet in pg_hba.conf..."
+  echo ${trust_local} >> ${PG_CONFDIR}/pg_hba.conf
+fi
+
 # allow remote connections to postgresql database
 cat >> ${PG_CONFDIR}/pg_hba.conf <<EOF
-host    all             all             samenet                 trust
 host    all             all             0.0.0.0/0               md5
 EOF
 

From d01ae5e1d73641cde2254810dab213fd32d256b1 Mon Sep 17 00:00:00 2001
From: Greg Fausak <greg@tacodata.com>
Date: Sat, 7 Feb 2015 19:27:20 +0000
Subject: [PATCH 3/3] oops, got the environment var wrong

---
 start | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/start b/start
index 6a0ae90..35ee784 100755
--- a/start
+++ b/start
@@ -9,7 +9,7 @@ PG_DATADIR="${PG_HOME}/${PG_VERSION}/main"
 # set this env variable to Y to enable a line in the
 # pg_hba.conf file to trust samenet.  this can be used to connect
 # from other containers on the same host without authentication
-PSQL_TRUST_LOCALNET="N"
+PSQL_TRUST_LOCALNET=${PSQL_TRUST_LOCALNET:N}
 
 DB_NAME=${DB_NAME:-}
 DB_USER=${DB_USER:-}