139 lines
3.9 KiB
Bash
139 lines
3.9 KiB
Bash
#!/bin/bash
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# Usage: postgres.sh [-p <period_mins>] [-i <interval_seconds>] [-c <cpulist>] [-h]
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TOOLBIN=$(dirname $0)
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# Initialize tools environment variables, and define common utility functions
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. ${TOOLBIN}/engtools_util.sh
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tools_init
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if [ $? -ne 0 ]; then
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echo "FATAL, tools_init - could not setup environment"
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exit $?
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fi
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# Enable use of INTERVAL_SEC sample interval
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OPT_USE_INTERVALS=1
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# Print key networking device statistics
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function print_postgres {
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print_separator
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TOOL_HIRES_TIME
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# postgressql command: set user, disable pagination, and be quiet
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PSQL="sudo -u postgres psql --pset pager=off -q"
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# List postgres databases
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db_list=( $(${PSQL} -t -c "SELECT datname FROM pg_database WHERE datistemplate = false;") )
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${ECHO} "# postgres databases"
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echo "db_list = ${db_list[@]}"
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${ECHO}
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# List sizes of all postgres databases (similar to "\l+")
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${ECHO} "# postgres database sizes"
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${PSQL} -c "
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SELECT
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pg_database.datname,
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pg_database_size(pg_database.datname),
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pg_size_pretty(pg_database_size(pg_database.datname))
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FROM pg_database
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ORDER BY pg_database_size DESC;
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"
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# For each database, list tables and their sizes (similar to "\dt+")
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for db in "${db_list[@]}"; do
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${ECHO} "# postgres database: ${db}"
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${PSQL} -d ${db} -c "
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SELECT
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table_schema,
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table_name,
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pg_size_pretty(table_size) AS table_size,
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pg_size_pretty(indexes_size) AS indexes_size,
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pg_size_pretty(total_size) AS total_size,
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live_tuples,
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dead_tuples
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FROM (
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SELECT
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table_schema,
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table_name,
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pg_table_size(table_name) AS table_size,
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pg_indexes_size(table_name) AS indexes_size,
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pg_total_relation_size(table_name) AS total_size,
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pg_stat_get_live_tuples(table_name::regclass) AS live_tuples,
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pg_stat_get_dead_tuples(table_name::regclass) AS dead_tuples
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FROM (
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SELECT
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table_schema,
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table_name
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FROM information_schema.tables
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WHERE table_schema='public'
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AND table_type='BASE TABLE'
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) AS all_tables
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ORDER BY total_size DESC
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) AS pretty_sizes;
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"
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${ECHO} "# postgres database vacuum: ${db}"
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${PSQL} -d ${db} -c "
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SELECT
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relname,
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n_live_tup,
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n_dead_tup,
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last_vacuum,
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last_autovacuum,
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last_analyze,
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last_autoanalyze
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FROM pg_stat_user_tables;
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"
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done
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# Specific table counts (This is very SLOW, look at "live tuples" instead)
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# Number of keystone tokens
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#${ECHO} "# keystone token count"
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# Number of postgres connections
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${ECHO} "# postgres database connections"
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CONN=$(ps -C postgres -o cmd= | wc -l)
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CONN_T=$(ps -C postgres -o cmd= | awk '/postgres: / {print $3}' | awk '{for(i=1;i<=NF;i++) a[$i]++} END {for(k in a) print k, a[k]}' | sort -k 2 -nr )
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${ECHO} "connections total = ${CONN}"
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${ECHO}
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${ECHO} "connections breakdown:"
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${ECHO} "${CONN_T}"
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${ECHO}
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${ECHO} "connections breakdown (query):"
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${PSQL} -c "SELECT datname,state,count(*) from pg_stat_activity group by datname,state;"
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${ECHO}
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${ECHO} "connections idle age:"
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${PSQL} -c "SELECT datname,age(now(),state_change) from pg_stat_activity where state='idle';"
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${ECHO}
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}
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#-------------------------------------------------------------------------------
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# MAIN Program:
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#-------------------------------------------------------------------------------
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# Parse input options
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tools_parse_options "${@}"
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# Set affinity of current script
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CPULIST=""
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set_affinity ${CPULIST}
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LOG "collecting ${TOOLNAME} for ${PERIOD_MIN} minutes, with ${INTERVAL_SEC} second sample intervals."
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# Print tools generic tools header
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tools_header
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# Calculate number of sample repeats based on overall interval and sampling interval
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((REPEATS = PERIOD_MIN * 60 / INTERVAL_SEC))
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for ((rep=1; rep <= REPEATS ; rep++)); do
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print_postgres
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sleep ${INTERVAL_SEC}
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done
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print_postgres
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LOG "done"
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# normal program exit
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tools_cleanup 0
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exit 0
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