|  | 
|  | 1 | +#!/bin/bash | 
|  | 2 | + | 
|  | 3 | +# Setup paths and variables | 
|  | 4 | +INSTALL_DIR=$HOME/postgresql/bld_tde/install | 
|  | 5 | +PRIMARY_DATA=$INSTALL_DIR/primary_data | 
|  | 6 | +REPLICA_DATA=$INSTALL_DIR/replica_data | 
|  | 7 | +PRIMARY_LOGFILE=$PRIMARY_DATA/server.log | 
|  | 8 | +REPLICA_LOGFILE=$REPLICA_DATA/server.log | 
|  | 9 | +PG_CTL="$INSTALL_DIR/bin/pg_ctl" | 
|  | 10 | +PG_REWIND="$INSTALL_DIR/bin/pg_rewind" | 
|  | 11 | +PG_BASEBACKUP="$INSTALL_DIR/bin/pg_basebackup" | 
|  | 12 | +PSQL="$INSTALL_DIR/bin/psql" | 
|  | 13 | +SYSBENCH="/usr/bin/sysbench" | 
|  | 14 | + | 
|  | 15 | +PORT_PRIMARY=5432 | 
|  | 16 | +PORT_REPLICA=5433 | 
|  | 17 | +REPL_USER=repl | 
|  | 18 | +REPL_PASS=replica | 
|  | 19 | +DB_NAME=postgres | 
|  | 20 | +DB_USER=$(whoami) | 
|  | 21 | + | 
|  | 22 | +# Clean slate | 
|  | 23 | +pkill -9 postgres | 
|  | 24 | +rm -rf "$PRIMARY_DATA" "$REPLICA_DATA" | 
|  | 25 | +rm -rf /tmp/primary_keyfile | 
|  | 26 | + | 
|  | 27 | +# Step 1: Init primary | 
|  | 28 | +$INSTALL_DIR/bin/initdb -D "$PRIMARY_DATA" | 
|  | 29 | + | 
|  | 30 | +# Configure primary | 
|  | 31 | +cat >> "$PRIMARY_DATA/postgresql.conf" <<EOF | 
|  | 32 | +port = $PORT_PRIMARY | 
|  | 33 | +shared_preload_libraries = 'pg_tde' | 
|  | 34 | +default_table_access_method = 'tde_heap' | 
|  | 35 | +wal_level = replica | 
|  | 36 | +wal_compression = on | 
|  | 37 | +wal_log_hints = on | 
|  | 38 | +wal_keep_size = 512MB | 
|  | 39 | +max_replication_slots = 2 | 
|  | 40 | +max_wal_senders = 2 | 
|  | 41 | +listen_addresses = 'localhost' | 
|  | 42 | +logging_collector = on | 
|  | 43 | +log_directory = 'log' | 
|  | 44 | +log_filename = 'primary.log' | 
|  | 45 | +EOF | 
|  | 46 | + | 
|  | 47 | +echo "host replication $REPL_USER 127.0.0.1/32 trust" >> "$PRIMARY_DATA/pg_hba.conf" | 
|  | 48 | +echo "host all all 127.0.0.1/32 trust" >> "$PRIMARY_DATA/pg_hba.conf" | 
|  | 49 | + | 
|  | 50 | +echo "=> Step 1: Start primary" | 
|  | 51 | +echo "#########################" | 
|  | 52 | +$PG_CTL -D "$PRIMARY_DATA" -o "-p $PORT_PRIMARY" -l "$PRIMARY_LOGFILE" start | 
|  | 53 | +sleep 3 | 
|  | 54 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "CREATE EXTENSION pg_tde;" | 
|  | 55 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "SELECT pg_tde_add_global_key_provider_file('file_provider','/tmp/primary_keyfile');" | 
|  | 56 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "SELECT pg_tde_create_key_using_global_key_provider('key1','file_provider');" | 
|  | 57 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "SELECT pg_tde_set_default_key_using_global_key_provider('key1','file_provider');" | 
|  | 58 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "ALTER SYSTEM SET pg_tde.wal_encrypt=ON;" | 
|  | 59 | +# Restart primary | 
|  | 60 | +$PG_CTL -D "$PRIMARY_DATA" -o "-p $PORT_PRIMARY" -l "$PRIMARY_LOGFILE" restart | 
|  | 61 | +sleep 3 | 
|  | 62 | + | 
|  | 63 | +# Create replication user | 
|  | 64 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "CREATE ROLE $REPL_USER WITH LOGIN REPLICATION SUPERUSER PASSWORD '$REPL_PASS';" | 
|  | 65 | + | 
|  | 66 | +# Create tables | 
|  | 67 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "CREATE TABLE t1(id INT, name TEXT);" | 
|  | 68 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "INSERT INTO t1 VALUES(101,'First Record');" | 
|  | 69 | + | 
|  | 70 | +echo "=> Step 2: Take base backup for replica" | 
|  | 71 | +echo "#######################################" | 
|  | 72 | +$PG_BASEBACKUP -D "$REPLICA_DATA" -X stream -R -h localhost -p $PORT_PRIMARY -U $REPL_USER | 
|  | 73 | + | 
|  | 74 | +# Configure replica | 
|  | 75 | +cat > "$REPLICA_DATA/postgresql.conf" <<EOF | 
|  | 76 | +port = $PORT_REPLICA | 
|  | 77 | +shared_preload_libraries = 'pg_tde' | 
|  | 78 | +default_table_access_method = 'tde_heap' | 
|  | 79 | +hot_standby = on | 
|  | 80 | +logging_collector = on | 
|  | 81 | +log_directory = 'log' | 
|  | 82 | +log_filename = 'replica.log' | 
|  | 83 | +wal_level = replica | 
|  | 84 | +wal_compression = on | 
|  | 85 | +wal_keep_size= 512MB | 
|  | 86 | +max_wal_senders = 2 | 
|  | 87 | +EOF | 
|  | 88 | + | 
|  | 89 | +echo "=>Step 3: Start replica" | 
|  | 90 | +echo "########################" | 
|  | 91 | +$PG_CTL -D "$REPLICA_DATA" -o "-p $PORT_REPLICA" -l "$REPLICA_LOGFILE" start | 
|  | 92 | +sleep 5 | 
|  | 93 | +$PSQL -p $PORT_REPLICA -d $DB_NAME -c "ALTER SYSTEM SET pg_tde.wal_encrypt=ON;" | 
|  | 94 | +# Restart replica | 
|  | 95 | +$PG_CTL -D "$REPLICA_DATA" -o "-p $PORT_REPLICA" -l "$REPLICA_LOGFILE" restart | 
|  | 96 | +sleep 5 | 
|  | 97 | + | 
|  | 98 | +echo "=>Step 4: Generate some WAL on primary" | 
|  | 99 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "INSERT INTO t1 VALUES (102, 'Second Record');" | 
|  | 100 | + | 
|  | 101 | +$PG_CTL -D "$PRIMARY_DATA" -m immediate stop | 
|  | 102 | +sleep 3 | 
|  | 103 | + | 
|  | 104 | +echo "=> Step 5: Promote replica" | 
|  | 105 | +echo "##########################" | 
|  | 106 | +# Remove auto conf file which was created by pg_basebackup | 
|  | 107 | +rm -f $REPLICA_DATA/postgresql.auto.conf | 
|  | 108 | +$PG_CTL -D "$REPLICA_DATA" promote | 
|  | 109 | + | 
|  | 110 | +echo "=>Step 6: Use sysbench to generate WAL on promoted replica" | 
|  | 111 | +echo "##########################################################" | 
|  | 112 | +echo "Generating WAL with sysbench..." | 
|  | 113 | +$PSQL -p $PORT_REPLICA -d $DB_NAME -c "INSERT INTO t1 VALUES(103,'Third Record');" | 
|  | 114 | + | 
|  | 115 | +# Backing up the Original config file | 
|  | 116 | +cp $PRIMARY_DATA/postgresql.conf /tmp/postgresql_bk.conf | 
|  | 117 | +echo "=> Step 8: Rewind old primary" | 
|  | 118 | +echo "############################" | 
|  | 119 | +echo "Rewinding old primary..." | 
|  | 120 | +$PG_REWIND --target-pgdata="$PRIMARY_DATA" \ | 
|  | 121 | +  --source-server="host=localhost port=$PORT_REPLICA user=$REPL_USER dbname=$DB_NAME" | 
|  | 122 | + | 
|  | 123 | +# Restoring the Original config file | 
|  | 124 | +cp /tmp/postgresql_bk.conf $PRIMARY_DATA/postgresql.conf | 
|  | 125 | + | 
|  | 126 | +echo "=> Step 9: Configure old primary as standby" | 
|  | 127 | +echo "###########################################" | 
|  | 128 | +touch $PRIMARY_DATA/standby.signal | 
|  | 129 | +cat >> "$PRIMARY_DATA/postgresql.conf" <<EOF | 
|  | 130 | +primary_conninfo = 'host=localhost port=$PORT_REPLICA user=$REPL_USER password=$REPL_PASS' | 
|  | 131 | +EOF | 
|  | 132 | + | 
|  | 133 | +echo "=> Step 10: Start rewound primary" | 
|  | 134 | +echo "################################" | 
|  | 135 | +$PG_CTL -D "$PRIMARY_DATA" -o "-p $PORT_PRIMARY" -l "$PRIMARY_LOGFILE" start | 
|  | 136 | +sleep 5 | 
|  | 137 | + | 
|  | 138 | +# Validate data on both servers | 
|  | 139 | +$PSQL -p $PORT_PRIMARY -d $DB_NAME -c "SELECT * FROM t1" | 
|  | 140 | +$PSQL -p $PORT_REPLICA -d $DB_NAME -c "SELECT * FROM t1" | 
|  | 141 | + | 
|  | 142 | +tail -10f $PRIMARY_DATA/log/primary.log | 
|  | 143 | + | 
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