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db:postgresql [31.07.2023 20:07] – kubadadb:postgresql [27.06.2024 11:26] (текущий) – kubada
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 +=== Ошибка Stale postmaster.pid file ===
 +<code bash>
 +cd /Users/$USER/Library/Application\ Support/Postgres/
 +ls
 +rm var-14/postmaster.pid
 +</code>
 +
 +----
 +
 === Преобразовать тип колонки из text в datetime === === Преобразовать тип колонки из text в datetime ===
  
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 postgres=# CREATE DATABASE template1 WITH owner=postgres ENCODING = 'UTF-8' lc_collate = 'en_US.utf8' lc_ctype = 'en_US.utf8' template template0; postgres=# CREATE DATABASE template1 WITH owner=postgres ENCODING = 'UTF-8' lc_collate = 'en_US.utf8' lc_ctype = 'en_US.utf8' template template0;
 postgres=# UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1'; postgres=# UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1';
 +</code>
 +
 +----
 +
 +=== Backup ===
 +<code bash>
 +##############################
 +## POSTGRESQL BACKUP CONFIG ##
 +##############################
 +
 +# Optional system user to run backups as.  If the user the script is running as doesn't match this
 +# the script terminates.  Leave blank to skip check.
 +BACKUP_USER=
 +
 +# Optional hostname to adhere to pg_hba policies.  Will default to "localhost" if none specified.
 +HOSTNAME=
 +
 +# Optional username to connect to database as.  Will default to "postgres" if none specified.
 +USERNAME=
 +
 +# This dir will be created if it doesn't exist.  This must be writable by the user the script is
 +# running as.
 +BACKUP_DIR=/home/backups/database/postgresql/
 +
 +# List of strings to match against in database name, separated by space or comma, for which we only
 +# wish to keep a backup of the schema, not the data. Any database names which contain any of these
 +# values will be considered candidates. (e.g. "system_log" will match "dev_system_log_2010-01")
 +SCHEMA_ONLY_LIST=""
 +
 +# Will produce a custom-format backup if set to "yes"
 +ENABLE_CUSTOM_BACKUPS=yes
 +
 +# Will produce a gzipped plain-format backup if set to "yes"
 +ENABLE_PLAIN_BACKUPS=yes
 +
 +# Will produce gzipped sql file containing the cluster globals, like users and passwords, if set to "yes"
 +ENABLE_GLOBALS_BACKUPS=yes
 +
 +
 +#### SETTINGS FOR ROTATED BACKUPS ####
 +
 +# Which day to take the weekly backup from (1-7 = Monday-Sunday)
 +DAY_OF_WEEK_TO_KEEP=5
 +
 +# Number of days to keep daily backups
 +DAYS_TO_KEEP=7
 +
 +# How many weeks to keep weekly backups
 +WEEKS_TO_KEEP=5
 +
 +######################################
 +</code>
 +
 +<code bash>
 +#!/bin/bash
 +
 +###########################
 +####### LOAD CONFIG #######
 +###########################
 +
 +while [ $# -gt 0 ]; do
 +        case $1 in
 +                -c)
 +                        if [ -r "$2" ]; then
 +                                source "$2"
 +                                shift 2
 +                        else
 +                                ${ECHO} "Unreadable config file \"$2\"" 1>&2
 +                                exit 1
 +                        fi
 +                        ;;
 +                *)
 +                        ${ECHO} "Unknown Option \"$1\"" 1>&2
 +                        exit 2
 +                        ;;
 +        esac
 +done
 +
 +if [ $# = 0 ]; then
 +        SCRIPTPATH=$(cd ${0%/*} && pwd -P)
 +        source $SCRIPTPATH/pg_backup.config
 +fi;
 +
 +###########################
 +#### PRE-BACKUP CHECKS ####
 +###########################
 +
 +# Make sure we're running as the required backup user
 +if [ "$BACKUP_USER" != "" -a "$(id -un)" != "$BACKUP_USER" ]; then
 + echo "This script must be run as $BACKUP_USER. Exiting." 1>&2
 + exit 1;
 +fi;
 +
 +
 +###########################
 +### INITIALISE DEFAULTS ###
 +###########################
 +
 +if [ ! $HOSTNAME ]; then
 + HOSTNAME="localhost"
 +fi;
 +
 +if [ ! $USERNAME ]; then
 + USERNAME="postgres"
 +fi;
 +
 +
 +###########################
 +#### START THE BACKUPS ####
 +###########################
 +
 +
 +FINAL_BACKUP_DIR=$BACKUP_DIR"`date +\%Y-\%m-\%d`/"
 +
 +echo "Making backup directory in $FINAL_BACKUP_DIR"
 +
 +if ! mkdir -p $FINAL_BACKUP_DIR; then
 + echo "Cannot create backup directory in $FINAL_BACKUP_DIR. Go and fix it!" 1>&2
 + exit 1;
 +fi;
 +
 +
 +#######################
 +### GLOBALS BACKUPS ###
 +#######################
 +
 +echo -e "\n\nPerforming globals backup"
 +echo -e "--------------------------------------------\n"
 +
 +if [ $ENABLE_GLOBALS_BACKUPS = "yes" ]
 +then
 +        echo "Globals backup"
 +
 +        set -o pipefail
 +        if ! pg_dumpall -g -h "$HOSTNAME" -U "$USERNAME" | gzip > $FINAL_BACKUP_DIR"globals".sql.gz.in_progress; then
 +                echo "[!!ERROR!!] Failed to produce globals backup" 1>&2
 +        else
 +                mv $FINAL_BACKUP_DIR"globals".sql.gz.in_progress $FINAL_BACKUP_DIR"globals".sql.gz
 +        fi
 +        set +o pipefail
 +else
 + echo "None"
 +fi
 +
 +
 +###########################
 +### SCHEMA-ONLY BACKUPS ###
 +###########################
 +
 +for SCHEMA_ONLY_DB in ${SCHEMA_ONLY_LIST//,/ }
 +do
 + SCHEMA_ONLY_CLAUSE="$SCHEMA_ONLY_CLAUSE or datname ~ '$SCHEMA_ONLY_DB'"
 +done
 +
 +SCHEMA_ONLY_QUERY="select datname from pg_database where false $SCHEMA_ONLY_CLAUSE order by datname;"
 +
 +echo -e "\n\nPerforming schema-only backups"
 +echo -e "--------------------------------------------\n"
 +
 +SCHEMA_ONLY_DB_LIST=`psql -h "$HOSTNAME" -U "$USERNAME" -At -c "$SCHEMA_ONLY_QUERY" postgres`
 +
 +echo -e "The following databases were matched for schema-only backup:\n${SCHEMA_ONLY_DB_LIST}\n"
 +
 +for DATABASE in $SCHEMA_ONLY_DB_LIST
 +do
 + echo "Schema-only backup of $DATABASE"
 +
 + set -o pipefail
 + if ! pg_dump -Fp -s -h "$HOSTNAME" -U "$USERNAME" "$DATABASE" | gzip > $FINAL_BACKUP_DIR"$DATABASE"_SCHEMA.sql.gz.in_progress; then
 + echo "[!!ERROR!!] Failed to backup database schema of $DATABASE" 1>&2
 + else
 + mv $FINAL_BACKUP_DIR"$DATABASE"_SCHEMA.sql.gz.in_progress $FINAL_BACKUP_DIR"$DATABASE"_SCHEMA.sql.gz
 + fi
 + set +o pipefail
 +done
 +
 +
 +###########################
 +###### FULL BACKUPS #######
 +###########################
 +
 +for SCHEMA_ONLY_DB in ${SCHEMA_ONLY_LIST//,/ }
 +do
 + EXCLUDE_SCHEMA_ONLY_CLAUSE="$EXCLUDE_SCHEMA_ONLY_CLAUSE and datname !~ '$SCHEMA_ONLY_DB'"
 +done
 +
 +FULL_BACKUP_QUERY="select datname from pg_database where not datistemplate and datallowconn $EXCLUDE_SCHEMA_ONLY_CLAUSE order by datname;"
 +
 +echo -e "\n\nPerforming full backups"
 +echo -e "--------------------------------------------\n"
 +
 +for DATABASE in `psql -h "$HOSTNAME" -U "$USERNAME" -At -c "$FULL_BACKUP_QUERY" postgres`
 +do
 + if [ $ENABLE_PLAIN_BACKUPS = "yes" ]
 + then
 + echo "Plain backup of $DATABASE"
 +
 + set -o pipefail
 + if ! pg_dump -Fp -h "$HOSTNAME" -U "$USERNAME" "$DATABASE" | gzip > $FINAL_BACKUP_DIR"$DATABASE".sql.gz.in_progress; then
 + echo "[!!ERROR!!] Failed to produce plain backup database $DATABASE" 1>&2
 + else
 + mv $FINAL_BACKUP_DIR"$DATABASE".sql.gz.in_progress $FINAL_BACKUP_DIR"$DATABASE".sql.gz
 + fi
 + set +o pipefail
 + fi
 +
 + if [ $ENABLE_CUSTOM_BACKUPS = "yes" ]
 + then
 + echo "Custom backup of $DATABASE"
 +
 + if ! pg_dump -Fc -h "$HOSTNAME" -U "$USERNAME" "$DATABASE" -f $FINAL_BACKUP_DIR"$DATABASE".custom.in_progress; then
 + echo "[!!ERROR!!] Failed to produce custom backup database $DATABASE" 1>&2
 + else
 + mv $FINAL_BACKUP_DIR"$DATABASE".custom.in_progress $FINAL_BACKUP_DIR"$DATABASE".custom
 + fi
 + fi
 +
 +done
 +
 +echo -e "\nAll database backups complete!"
 </code> </code>
  
 ---- ----
db/postgresql.1690823225.txt.gz · Последнее изменение: 31.07.2023 20:07 — kubada