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8d172e944c
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3 changed files with 357 additions and 328 deletions
25
.pre-commit-config.yaml
Normal file
25
.pre-commit-config.yaml
Normal file
|
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@ -0,0 +1,25 @@
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|||
# Pre-commit hooks to run tests and ensure code is cleaned.
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# See https://pre-commit.com for more information
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||||
---
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repos:
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- repo: https://github.com/codespell-project/codespell
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rev: v2.2.2
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hooks:
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- id: codespell
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args:
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- --ignore-words-list=exten
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- --skip="./.*,*.csv,*.json,*.ini,*.subject,*.txt,*.html,*.log,*.conf"
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- --quiet-level=2
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- --ignore-regex=.*codespell-ignore$
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# - --write-changes # Uncomment to write changes
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exclude_types: [csv, json]
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- repo: https://github.com/adrienverge/yamllint
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rev: v1.32.0
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hooks:
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- id: yamllint
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ignore: .github/
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- repo: https://github.com/pre-commit/mirrors-prettier
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rev: v2.7.1
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hooks:
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- id: prettier
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args: ["--print-width", "100"]
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14
README.md
14
README.md
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@ -7,14 +7,14 @@ This script :
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- check if Postgres is running (_CRITICAL_ raise if not)
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- check if Postgres is in recovery mode :
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- if Postgres is in recovery mode :
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- retreive from Postgres the last _xlog_ file receive and the _xlog_ file replay
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- retrieve from Postgres the last _xlog_ file receive and the _xlog_ file replay
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- check if Postgres recovery configuration file is NOT present (_CRITICAL_ raise if present)
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- retreive master connection informations from Postgres recovery configuration file (_UNKNOWN_ raise on error). Default Postgres master TCP port will be used if port is not specify.
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- retreive the current state and sync state of the host from Postgres master server by making a connection on master server (_UNKNOWN_ raise on error).
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- retrieve master connection information from Postgres recovery configuration file (_UNKNOWN_ raise on error). Default Postgres master TCP port will be used if port is not specify.
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- retrieve the current state and sync state of the host from Postgres master server by making a connection on master server (_UNKNOWN_ raise on error).
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- check if the current state of the host is "streaming" (_CRITICAL_ raise if not)
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- check if the current sync state of the host is "sync" (or the state specified using `-e` parameter, _CRITICAL_ raise if not)
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- if the check of the current XLOG file of the master host is enabled :
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- retreive current _xlog_ file from Postgres master server by making a connection on master server (_UNKNOWN_ raise on error).
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- retrieve current _xlog_ file from Postgres master server by making a connection on master server (_UNKNOWN_ raise on error).
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- check if the current master _xlog_ file is the last received _xlog_ file (_CRITICAL_ raise if not)
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- check if the last received _xlog_ file is the last replay _xlog_ file : if not, check the current delay with the last replayed transaction against _replay_warn_delay_ and _replay_crit_delay_ thresholds and raise corresponding error if they are exceeded
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- Return _OK_ state
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@ -27,11 +27,11 @@ This script :
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## Requirements
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* Some CLI tools: `sudo`, `awk`, `sed`, `bc`, `psql` and `pg_lscluster`
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- Some CLI tools: `sudo`, `awk`, `sed`, `bc`, `psql` and `pg_lscluster`
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* **On master node:** Slaves must be able to connect with user from `recovery.conf` / `postgresql.auto.conf` (or user specify using `-U`) to database with the same name (or another specified with `-D`) as `trust` (or using password specified in `~/.pgpass`). This user must have `SUPERUSER` privilege (need to get replication details).
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- **On master node:** Slaves must be able to connect with user from `recovery.conf` / `postgresql.auto.conf` (or user specify using `-U`) to database with the same name (or another specified with `-D`) as `trust` (or using password specified in `~/.pgpass`). This user must have `SUPERUSER` privilege (need to get replication details).
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* **On standby node:** `PG_USER` must be able to connect localy on the database with the same name `(or another specified with -D)` as `trust` (or using password specified in `~/.pgpass`).
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- **On standby node:** `PG_USER` must be able to connect locally on the database with the same name `(or another specified with -D)` as `trust` (or using password specified in `~/.pgpass`).
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## Installation
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|
|
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@ -1,4 +1,5 @@
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#!/bin/bash
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# vim: tabstop=4 shiftwidth=4 softtabstop=4 expandtab
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#
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# Nagios plugin to check Postgresql streamin replication state
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#
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@ -14,7 +15,7 @@
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# ~/.pgpass). This user must have SUPERUSER privilege (need to get replication
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# details).
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#
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# On standby node: PG_USER must be able to connect localy on the database with the same name
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# On standby node: PG_USER must be able to connect locally on the database with the same name
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# (or another specified with -D) as trust (or using password specified in
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# ~/.pgpass).
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#
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|
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@ -46,95 +47,95 @@ EXPECTED_SYNC_STATE=sync
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DEBUG=0
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function usage () {
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ERROR="$1"
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[ -n "$ERROR" ] && echo -e "$ERROR\n"
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cat << EOF
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ERROR="$1"
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[ -n "$ERROR" ] && echo -e "$ERROR\n"
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cat << EOF
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Usage: $0 [-d] [-h] [options]
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-u pg_user Specify local Postgres user (Default: try to auto-detect or use $DEFAULT_PG_USER)
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-b psql_bin Specify psql binary path (Default: $PSQL_BIN)
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-B pg_lsclusters_bin Specify pg_lsclusters binary path (Default: $PG_LSCLUSTER_BIN)
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-V pg_version Specify Postgres version (Default: try to auto-detect or use $DEFAULT_PG_VERSION)
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-m pg_main Specify Postgres main directory path (Default: try to auto-detect or use
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$DEFAULT_PG_MAIN)
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-r recovery_conf Specify Postgres recovery configuration file path
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(Default: [PG_MAIN]/recovery.conf on PG <= 11, [PG_MAIN]/postgresql.auto.conf on PG >= 12)
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-U pg_master_user Specify Postgres user to use on master (Default: user from recovery.conf file)
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-p pg_port Specify default Postgres master TCP port (Default: same as local PostgreSQL
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port if detected or use $DEFAULT_PG_PORT)
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-D dbname Specify DB name on Postgres master/slave to connect on (Default: PG_USER, must
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match with .pgpass one is used)
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-C 1/0 Enable or disable check if the current LSN of the master host is the same
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of the last received LSN (Default: $CHECK_CUR_MASTER_LSN)
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-w replay_warn_delay Specify the replay warning delay in second (Default: $REPLAY_WARNING_DELAY)
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-c replay_crit_delay Specify the replay critical delay in second (Default: $REPLAY_CRITICAL_DELAY)
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-e expected_sync_state The expected replication state ('sync' or 'async', default: $EXPECTED_SYNC_STATE)
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-d Debug mode
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-h Show this message
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-u pg_user Specify local Postgres user (Default: try to auto-detect or use $DEFAULT_PG_USER)
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-b psql_bin Specify psql binary path (Default: $PSQL_BIN)
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-B pg_lsclusters_bin Specify pg_lsclusters binary path (Default: $PG_LSCLUSTER_BIN)
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-V pg_version Specify Postgres version (Default: try to auto-detect or use $DEFAULT_PG_VERSION)
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-m pg_main Specify Postgres main directory path (Default: try to auto-detect or use
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$DEFAULT_PG_MAIN)
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-r recovery_conf Specify Postgres recovery configuration file path
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( Default: [PG_MAIN]/recovery.conf on PG <= 11, [PG_MAIN]/postgresql.auto.conf on PG >= 12)
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-U pg_master_user Specify Postgres user to use on master (Default: user from recovery.conf file)
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-p pg_port Specify default Postgres master TCP port (Default: same as local PostgreSQL
|
||||
port if detected or use $DEFAULT_PG_PORT)
|
||||
-D dbname Specify DB name on Postgres master/slave to connect on (Default: PG_USER, must
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||||
match with .pgpass one is used)
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-C 1/0 Enable or disable check if the current LSN of the master host is the same
|
||||
of the last received LSN (Default: $CHECK_CUR_MASTER_LSN)
|
||||
-w replay_warn_delay Specify the replay warning delay in second (Default: $REPLAY_WARNING_DELAY)
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||||
-c replay_crit_delay Specify the replay critical delay in second (Default: $REPLAY_CRITICAL_DELAY)
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||||
-e expected_sync_state The expected replication state ('sync' or 'async', default: $EXPECTED_SYNC_STATE)
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-d Debug mode
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-h Show this message
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||||
EOF
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[ -n "$ERROR" ] && exit 1 || exit 0
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[ -n "$ERROR" ] && exit 1 || exit 0
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}
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while getopts "hu:b:B:V:m:r:U:p:D:C:w:c:e:d" OPTION
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do
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case $OPTION in
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u)
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PG_USER=$OPTARG
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;;
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b)
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PSQL_BIN=$OPTARG
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;;
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B)
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PG_LSCLUSTER_BIN=$OPTARG
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;;
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V)
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PG_VERSION=$OPTARG
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;;
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m)
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PG_MAIN=$OPTARG
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;;
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r)
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RECOVERY_CONF=$OPTARG
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;;
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U)
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PG_MASTER_USER=$OPTARG
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;;
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p)
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PG_DEFAULT_PORT=$OPTARG
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;;
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D)
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PG_DB=$OPTARG
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;;
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C)
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CHECK_CUR_MASTER_LSN=$OPTARG
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;;
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w)
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REPLAY_WARNING_DELAY=$OPTARG
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;;
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c)
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REPLAY_CRITICAL_DELAY=$OPTARG
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;;
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e)
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[ "$OPTARG" != "sync" -a "$OPTARG" != "async" ] && \
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usage "Invalid expected replication state '$OPTARG'. Possible values: sync or async."
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EXPECTED_SYNC_STATE=$OPTARG
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||||
;;
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d)
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DEBUG=1
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;;
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h)
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usage
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||||
;;
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||||
\?)
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||||
echo -n "Unkown option"
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||||
usage
|
||||
esac
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case $OPTION in
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u)
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PG_USER=$OPTARG
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||||
;;
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b)
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PSQL_BIN=$OPTARG
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||||
;;
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B)
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PG_LSCLUSTER_BIN=$OPTARG
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;;
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V)
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PG_VERSION=$OPTARG
|
||||
;;
|
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m)
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PG_MAIN=$OPTARG
|
||||
;;
|
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r)
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||||
RECOVERY_CONF=$OPTARG
|
||||
;;
|
||||
U)
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||||
PG_MASTER_USER=$OPTARG
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||||
;;
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p)
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||||
PG_DEFAULT_PORT=$OPTARG
|
||||
;;
|
||||
D)
|
||||
PG_DB=$OPTARG
|
||||
;;
|
||||
C)
|
||||
CHECK_CUR_MASTER_LSN=$OPTARG
|
||||
;;
|
||||
w)
|
||||
REPLAY_WARNING_DELAY=$OPTARG
|
||||
;;
|
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c)
|
||||
REPLAY_CRITICAL_DELAY=$OPTARG
|
||||
;;
|
||||
e)
|
||||
[ "$OPTARG" != "sync" -a "$OPTARG" != "async" ] && \
|
||||
usage "Invalid expected replication state '$OPTARG'. Possible values: sync or async."
|
||||
EXPECTED_SYNC_STATE=$OPTARG
|
||||
;;
|
||||
d)
|
||||
DEBUG=1
|
||||
;;
|
||||
h)
|
||||
usage
|
||||
;;
|
||||
\?)
|
||||
echo -n "Unknown option"
|
||||
usage
|
||||
esac
|
||||
done
|
||||
|
||||
function debug() {
|
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if [ $DEBUG -eq 1 ]
|
||||
then
|
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>&2 echo -e "[DEBUG] $1"
|
||||
fi
|
||||
if [ $DEBUG -eq 1 ]
|
||||
then
|
||||
>&2 echo -e "[DEBUG] $1"
|
||||
fi
|
||||
}
|
||||
|
||||
debug "Starting options (before handling auto-detection/default values):
|
||||
|
|
@ -155,19 +156,19 @@ REPLAY_CRITICAL_DELAY = $REPLAY_CRITICAL_DELAY
|
|||
# Auto-detect PostgreSQL information using pg_lsclusters
|
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if [ -x "$PG_LSCLUSTER_BIN" ]
|
||||
then
|
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PG_CLUSTER=$( $PG_LSCLUSTER_BIN -h 2>/dev/null|head -n1 )
|
||||
if [ -n "$PG_CLUSTER" ]
|
||||
then
|
||||
debug "pg_lsclusters output:\n\t$PG_CLUSTER"
|
||||
# Output example:
|
||||
# 9.6 main 5432 online,recovery postgres /var/lib/postgresql/9.6/main /var/log/postgresql/postgresql-9.6-main.log
|
||||
[ -z "$PG_VERSION" ] && PG_VERSION=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $1}' )
|
||||
[ -z "$PG_DEFAULT_PORT" ] && PG_DEFAULT_PORT=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $3}' )
|
||||
[ -z "$PG_USER" ] && PG_USER=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $5}' )
|
||||
[ -z "$PG_MAIN" ] && PG_MAIN=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $6}' )
|
||||
fi
|
||||
PG_CLUSTER=$( $PG_LSCLUSTER_BIN -h 2>/dev/null|head -n1 )
|
||||
if [ -n "$PG_CLUSTER" ]
|
||||
then
|
||||
debug "pg_lsclusters output:\n\t$PG_CLUSTER"
|
||||
# Output example:
|
||||
# 9.6 main 5432 online,recovery postgres /var/lib/postgresql/9.6/main /var/log/postgresql/postgresql-9.6-main.log
|
||||
[ -z "$PG_VERSION" ] && PG_VERSION=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $1}' )
|
||||
[ -z "$PG_DEFAULT_PORT" ] && PG_DEFAULT_PORT=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $3}' )
|
||||
[ -z "$PG_USER" ] && PG_USER=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $5}' )
|
||||
[ -z "$PG_MAIN" ] && PG_MAIN=$( echo "$PG_CLUSTER"|awk -F ' +' '{print $6}' )
|
||||
fi
|
||||
else
|
||||
debug "pg_lsclusters not found ($PG_LSCLUSTER_BIN): parameters auto-detection disabled"
|
||||
debug "pg_lsclusters not found ($PG_LSCLUSTER_BIN): parameters auto-detection disabled"
|
||||
fi
|
||||
|
||||
# If auto-detection failed, use default values
|
||||
|
|
@ -189,8 +190,8 @@ id "$PG_USER" > /dev/null 2>&1
|
|||
|
||||
# Check RECOVERY_CONF
|
||||
if [ -z "$RECOVERY_CONF" ]; then
|
||||
[ $PG_VERSION -le 11 ] && RECOVERY_CONF_FILENAME="recovery.conf" || RECOVERY_CONF_FILENAME="postgresql.auto.conf"
|
||||
RECOVERY_CONF="$PG_MAIN/$RECOVERY_CONF_FILENAME"
|
||||
[ $PG_VERSION -le 11 ] && RECOVERY_CONF_FILENAME="recovery.conf" || RECOVERY_CONF_FILENAME="postgresql.auto.conf"
|
||||
RECOVERY_CONF="$PG_MAIN/$RECOVERY_CONF_FILENAME"
|
||||
fi
|
||||
|
||||
# Check PG_DEFAULT_PORT
|
||||
|
|
@ -200,15 +201,15 @@ fi
|
|||
[ -z "$PG_DB" ] && PG_DB="$PG_USER"
|
||||
|
||||
function psql_get () {
|
||||
sql="$1"
|
||||
debug "Exec 'echo \"$sql\"|sudo -u $PG_USER $PSQL_BIN -d \"$PG_DB\" -w -t -P format=unaligned"
|
||||
echo "$sql"|sudo -u $PG_USER $PSQL_BIN -d "$PG_DB" -w -t -P format=unaligned
|
||||
sql="$1"
|
||||
debug "Exec 'echo \"$sql\"|sudo -u $PG_USER $PSQL_BIN -d \"$PG_DB\" -w -t -P format=unaligned"
|
||||
echo "$sql"|sudo -u $PG_USER $PSQL_BIN -d "$PG_DB" -w -t -P format=unaligned
|
||||
}
|
||||
|
||||
function psql_master_get () {
|
||||
sql="$1"
|
||||
debug "Exec 'echo \"$sql\"|sudo -u $PG_USER $PSQL_BIN -U $M_USER -h $M_HOST -w -p $M_PORT -d $PG_DB -t -P format=unaligned"
|
||||
echo "$sql"|sudo -u $PG_USER $PSQL_BIN -U $M_USER -h $M_HOST -w -p $M_PORT -d $PG_DB -t -P format=unaligned
|
||||
sql="$1"
|
||||
debug "Exec 'echo \"$sql\"|sudo -u $PG_USER $PSQL_BIN -U $M_USER -h $M_HOST -w -p $M_PORT -d $PG_DB -t -P format=unaligned"
|
||||
echo "$sql"|sudo -u $PG_USER $PSQL_BIN -U $M_USER -h $M_HOST -w -p $M_PORT -d $PG_DB -t -P format=unaligned
|
||||
}
|
||||
|
||||
debug "Running options:
|
||||
|
|
@ -229,32 +230,32 @@ REPLAY_CRITICAL_DELAY = $REPLAY_CRITICAL_DELAY
|
|||
# Set some stuff to PostgreSQL version
|
||||
if [ $( echo "$PG_VERSION < 10" |bc -l ) -eq 1 ]
|
||||
then
|
||||
pg_last_wal_receive_lsn='pg_last_xlog_receive_location()'
|
||||
pg_last_wal_replay_lsn='pg_last_xlog_replay_location()'
|
||||
pg_current_wal_lsn='pg_current_xlog_location()'
|
||||
pg_wal_lsn_diff='pg_xlog_location_diff'
|
||||
sent_lsn='sent_location'
|
||||
write_lsn='write_location'
|
||||
pg_last_wal_receive_lsn='pg_last_xlog_receive_location()'
|
||||
pg_last_wal_replay_lsn='pg_last_xlog_replay_location()'
|
||||
pg_current_wal_lsn='pg_current_xlog_location()'
|
||||
pg_wal_lsn_diff='pg_xlog_location_diff'
|
||||
sent_lsn='sent_location'
|
||||
write_lsn='write_location'
|
||||
else
|
||||
pg_last_wal_receive_lsn='pg_last_wal_receive_lsn()'
|
||||
pg_last_wal_replay_lsn='pg_last_wal_replay_lsn()'
|
||||
pg_current_wal_lsn='pg_current_wal_lsn()'
|
||||
pg_wal_lsn_diff='pg_wal_lsn_diff'
|
||||
sent_lsn='sent_lsn'
|
||||
write_lsn='write_lsn'
|
||||
pg_last_wal_receive_lsn='pg_last_wal_receive_lsn()'
|
||||
pg_last_wal_replay_lsn='pg_last_wal_replay_lsn()'
|
||||
pg_current_wal_lsn='pg_current_wal_lsn()'
|
||||
pg_wal_lsn_diff='pg_wal_lsn_diff'
|
||||
sent_lsn='sent_lsn'
|
||||
write_lsn='write_lsn'
|
||||
fi
|
||||
|
||||
# Postgres is running ?
|
||||
if [ $DEBUG -eq 0 ]
|
||||
then
|
||||
psql_get '\q' 2> /dev/null
|
||||
psql_get '\q' 2> /dev/null
|
||||
else
|
||||
psql_get '\q'
|
||||
psql_get '\q'
|
||||
fi
|
||||
if [ $? -ne 0 ]
|
||||
then
|
||||
echo "CRITICAL: Postgres is not running !"
|
||||
exit 2
|
||||
echo "CRITICAL: Postgres is not running !"
|
||||
exit 2
|
||||
fi
|
||||
debug "Postgres is running"
|
||||
|
||||
|
|
@ -263,233 +264,236 @@ RECOVERY_MODE=0
|
|||
|
||||
if [ -f $RECOVERY_CONF ]
|
||||
then
|
||||
debug "File recovery.conf found. Hot-standby mode."
|
||||
debug "File recovery.conf found. Hot-standby mode."
|
||||
|
||||
# Check recovery mode
|
||||
if [ $RECOVERY_MODE -ne 1 ]
|
||||
then
|
||||
echo "CRITICAL: Not in recovery mode while recovery.conf file found !"
|
||||
exit 2
|
||||
fi
|
||||
debug "Postgres is in recovery mode"
|
||||
# Check recovery mode
|
||||
if [ $RECOVERY_MODE -ne 1 ]
|
||||
then
|
||||
echo "CRITICAL: Not in recovery mode while recovery.conf file found !"
|
||||
exit 2
|
||||
fi
|
||||
debug "Postgres is in recovery mode"
|
||||
|
||||
# Get local current last received/replayed LSN
|
||||
LAST_RECEIVED_LSN=$( psql_get "SELECT $pg_last_wal_receive_lsn" )
|
||||
debug "Last received LSN: $LAST_RECEIVED_LSN"
|
||||
LAST_REPLAYED_LSN=$( psql_get "SELECT $pg_last_wal_replay_lsn" )
|
||||
debug "Last replayed LSN: $LAST_REPLAYED_LSN"
|
||||
# Get local current last received/replayed LSN
|
||||
LAST_RECEIVED_LSN=$( psql_get "SELECT $pg_last_wal_receive_lsn" )
|
||||
debug "Last received LSN: $LAST_RECEIVED_LSN"
|
||||
LAST_REPLAYED_LSN=$( psql_get "SELECT $pg_last_wal_replay_lsn" )
|
||||
debug "Last replayed LSN: $LAST_REPLAYED_LSN"
|
||||
|
||||
|
||||
# Get master connection informations from recovery.conf file
|
||||
MASTER_CONN_INFOS=$( egrep '^ *primary_conninfo' $RECOVERY_CONF|sed "s/^ *primary_conninfo *= *\(.\+\) *$/\1/" )
|
||||
if [ ! -n "$MASTER_CONN_INFOS" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retreive master connection informations form recovery.conf file"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master connection informations: $MASTER_CONN_INFOS"
|
||||
# Get master connection information from recovery.conf file
|
||||
MASTER_CONN_INFOS=$( egrep '^ *primary_conninfo' $RECOVERY_CONF|sed "s/^ *primary_conninfo *= *\(.\+\) *$/\1/" )
|
||||
if [ ! -n "$MASTER_CONN_INFOS" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retrieve master connection information form recovery.conf file"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master connection information: $MASTER_CONN_INFOS"
|
||||
|
||||
M_HOST=$( echo "$MASTER_CONN_INFOS"| grep 'host=' | sed 's/^.*host= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' )
|
||||
if [ ! -n "$M_HOST" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retreive master host from recovery.conf file"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master host: $M_HOST"
|
||||
M_HOST=$( echo "$MASTER_CONN_INFOS"| grep 'host=' | sed 's/^.*host= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' )
|
||||
if [ ! -n "$M_HOST" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retrieve master host from recovery.conf file"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master host: $M_HOST"
|
||||
|
||||
M_PORT=$( echo "$MASTER_CONN_INFOS"| grep 'port=' | sed 's/^.*port= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' )
|
||||
if [ ! -n "$M_PORT" ]
|
||||
then
|
||||
debug "Master port not specified, use default: $PG_DEFAULT_PORT"
|
||||
M_PORT=$PG_DEFAULT_PORT
|
||||
else
|
||||
debug "Master port: $M_PORT"
|
||||
fi
|
||||
M_PORT=$( echo "$MASTER_CONN_INFOS"| grep 'port=' | sed 's/^.*port= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' )
|
||||
if [ ! -n "$M_PORT" ]
|
||||
then
|
||||
debug "Master port not specified, use default: $PG_DEFAULT_PORT"
|
||||
M_PORT=$PG_DEFAULT_PORT
|
||||
else
|
||||
debug "Master port: $M_PORT"
|
||||
fi
|
||||
|
||||
if [ -n "$PG_MASTER_USER" ]
|
||||
then
|
||||
debug "Master user provided by command-line, use it: $PG_MASTER_USER"
|
||||
M_USER="$PG_MASTER_USER"
|
||||
else
|
||||
M_USER=$( echo "$MASTER_CONN_INFOS"| grep 'user=' | sed 's/^.*user= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' )
|
||||
if [ ! -n "$M_USER" ]
|
||||
then
|
||||
debug "Master user not specified, use default: $PG_USER"
|
||||
M_USER=$PG_USER
|
||||
else
|
||||
debug "Master user: $M_USER"
|
||||
fi
|
||||
fi
|
||||
if [ -n "$PG_MASTER_USER" ]
|
||||
then
|
||||
debug "Master user provided by command-line, use it: $PG_MASTER_USER"
|
||||
M_USER="$PG_MASTER_USER"
|
||||
else
|
||||
M_USER=$( echo "$MASTER_CONN_INFOS"| grep 'user=' | sed 's/^.*user= *\([0-9a-zA-Z.-]\+\) *.*$/\1/' )
|
||||
if [ ! -n "$M_USER" ]
|
||||
then
|
||||
debug "Master user not specified, use default: $PG_USER"
|
||||
M_USER=$PG_USER
|
||||
else
|
||||
debug "Master user: $M_USER"
|
||||
fi
|
||||
fi
|
||||
|
||||
M_APP_NAME=$( echo "$MASTER_CONN_INFOS"| grep 'application_name=' | sed "s/^.*application_name=[ \'\"]*\([^ \'\"]\+\)[ \'\"]*.*$/\1/" )
|
||||
if [ ! -n "$M_APP_NAME" ]
|
||||
then
|
||||
if [ $PG_VERSION -ge 12 ]
|
||||
then
|
||||
debug "Master application name not specified, use cluster_name if defined"
|
||||
CLUSTER_NAME=$( psql_get "SELECT current_setting('cluster_name')" )
|
||||
debug "Cluster name: $CLUSTER_NAME"
|
||||
if [ -n "$CLUSTER_NAME" ]
|
||||
then
|
||||
M_APP_NAME=$CLUSTER_NAME
|
||||
else
|
||||
debug "Cluster name not defined, use default: $PG_DEFAULT_APP_NAME"
|
||||
M_APP_NAME=$PG_DEFAULT_APP_NAME
|
||||
fi
|
||||
else
|
||||
debug "Master application name not specified, use default: $PG_DEFAULT_APP_NAME"
|
||||
M_APP_NAME=$PG_DEFAULT_APP_NAME
|
||||
fi
|
||||
else
|
||||
debug "Master application name: $M_APP_NAME"
|
||||
fi
|
||||
M_APP_NAME=$( echo "$MASTER_CONN_INFOS"| grep 'application_name=' | sed "s/^.*application_name=[ \'\"]*\([^ \'\"]\+\)[ \'\"]*.*$/\1/" )
|
||||
if [ ! -n "$M_APP_NAME" ]
|
||||
then
|
||||
if [ $PG_VERSION -ge 12 ]
|
||||
then
|
||||
debug "Master application name not specified, use cluster_name if defined"
|
||||
CLUSTER_NAME=$( psql_get "SELECT current_setting('cluster_name')" )
|
||||
debug "Cluster name: $CLUSTER_NAME"
|
||||
if [ -n "$CLUSTER_NAME" ]
|
||||
then
|
||||
M_APP_NAME=$CLUSTER_NAME
|
||||
else
|
||||
debug "Cluster name not defined, use default: $PG_DEFAULT_APP_NAME"
|
||||
M_APP_NAME=$PG_DEFAULT_APP_NAME
|
||||
fi
|
||||
else
|
||||
debug "Master application name not specified, use default: $PG_DEFAULT_APP_NAME"
|
||||
M_APP_NAME=$PG_DEFAULT_APP_NAME
|
||||
fi
|
||||
else
|
||||
debug "Master application name: $M_APP_NAME"
|
||||
fi
|
||||
|
||||
# Get current replication state information from master
|
||||
M_CUR_REPL_STATE_INFO="$( psql_master_get "SELECT state, sync_state, $sent_lsn AS sent_lsn, $write_lsn AS write_lsn FROM pg_stat_replication WHERE application_name='$M_APP_NAME';" )"
|
||||
if [ ! -n "$M_CUR_REPL_STATE_INFO" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retreive current replication state information from master server"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master current replication state:\n\tstate|sync_state|sent_lsn|write_lsn\n\t$M_CUR_REPL_STATE_INFO"
|
||||
# Get current replication state information from master
|
||||
M_CUR_REPL_STATE_INFO="$( psql_master_get "SELECT state, sync_state, $sent_lsn AS sent_lsn, $write_lsn AS write_lsn FROM pg_stat_replication WHERE application_name='$M_APP_NAME';" )"
|
||||
if [ ! -n "$M_CUR_REPL_STATE_INFO" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retrieve current replication state information from master server"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master current replication state:\n\tstate|sync_state|sent_lsn|write_lsn\n\t$M_CUR_REPL_STATE_INFO"
|
||||
|
||||
M_CUR_STATE=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f1 )
|
||||
debug "Master current state: $M_CUR_STATE"
|
||||
if [ "$M_CUR_STATE" != "streaming" ]
|
||||
then
|
||||
echo "CRITICAL: this host is not in streaming state according to master host (current state = '$M_CUR_STATE')"
|
||||
exit 2
|
||||
fi
|
||||
M_CUR_STATE=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f1 )
|
||||
debug "Master current state: $M_CUR_STATE"
|
||||
if [ "$M_CUR_STATE" != "streaming" ]
|
||||
then
|
||||
echo "CRITICAL: this host is not in streaming state according to master host (current state = '$M_CUR_STATE')"
|
||||
exit 2
|
||||
fi
|
||||
|
||||
M_CUR_SYNC_STATE=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f2 )
|
||||
debug "Master current sync state: $M_CUR_SYNC_STATE"
|
||||
if [ "$M_CUR_SYNC_STATE" != "$EXPECTED_SYNC_STATE" ]
|
||||
then
|
||||
echo "CRITICAL: unexpected replication state '$M_CUR_SYNC_STATE' (expected state = '$EXPECTED_SYNC_STATE')"
|
||||
exit 2
|
||||
fi
|
||||
M_CUR_SYNC_STATE=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f2 )
|
||||
debug "Master current sync state: $M_CUR_SYNC_STATE"
|
||||
if [ "$M_CUR_SYNC_STATE" != "$EXPECTED_SYNC_STATE" ]
|
||||
then
|
||||
echo "CRITICAL: unexpected replication state '$M_CUR_SYNC_STATE' (expected state = '$EXPECTED_SYNC_STATE')"
|
||||
exit 2
|
||||
fi
|
||||
|
||||
M_CUR_SENT_LSN=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f3 )
|
||||
M_CUR_WRITED_LSN=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f4 )
|
||||
debug "Master current last sent/writed LSN: '$M_CUR_SENT_LSN' / '$M_CUR_WRITED_LSN'"
|
||||
M_CUR_SENT_LSN=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f3 )
|
||||
M_CUR_WRITED_LSN=$( echo "$M_CUR_REPL_STATE_INFO"|cut -d'|' -f4 )
|
||||
debug "Master current last sent/writed LSN: '$M_CUR_SENT_LSN' / '$M_CUR_WRITED_LSN'"
|
||||
|
||||
# Check current master LSN vs last received LSN
|
||||
if [ "$CHECK_CUR_MASTER_LSN" == "1" ]
|
||||
then
|
||||
# Get current LSN from master
|
||||
M_CUR_LSN="$( psql_master_get "SELECT $pg_current_wal_lsn" )"
|
||||
if [ ! -n "$M_CUR_LSN" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retreive current LSN from master server"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master current LSN: $M_CUR_LSN"
|
||||
# Check current master LSN vs last received LSN
|
||||
if [ "$CHECK_CUR_MASTER_LSN" == "1" ]
|
||||
then
|
||||
# Get current LSN from master
|
||||
M_CUR_LSN="$( psql_master_get "SELECT $pg_current_wal_lsn" )"
|
||||
if [ ! -n "$M_CUR_LSN" ]
|
||||
then
|
||||
echo "UNKNOWN: Can't retrieve current LSN from master server"
|
||||
exit 3
|
||||
fi
|
||||
debug "Master current LSN: $M_CUR_LSN"
|
||||
|
||||
# Master current LSN is the last received LSN ?
|
||||
if [ "$M_CUR_LSN" != "$LAST_RECEIVED_LSN" ]
|
||||
then
|
||||
echo "CRITICAL: Master current LSN is not the last received LSN"
|
||||
exit 2
|
||||
fi
|
||||
debug "Master current LSN is the last received LSN"
|
||||
fi
|
||||
# Master current LSN is the last received LSN ?
|
||||
if [ "$M_CUR_LSN" != "$LAST_RECEIVED_LSN" ]
|
||||
then
|
||||
echo "CRITICAL: Master current LSN is not the last received LSN"
|
||||
exit 2
|
||||
fi
|
||||
debug "Master current LSN is the last received LSN"
|
||||
fi
|
||||
|
||||
# The last received LSN is the last replayed ?
|
||||
if [ "$LAST_RECEIVED_LSN" != "$LAST_REPLAYED_LSN" ]
|
||||
then
|
||||
debug "/!\ The last received LSN is NOT the last replayed LSN ('$M_CUR_LSN' / '$LAST_REPLAYED_LSN')"
|
||||
REPLAY_DELAY="$( psql_get 'SELECT EXTRACT(EPOCH FROM now() - pg_last_xact_replay_timestamp());' )"
|
||||
debug "Replay delay is $REPLAY_DELAY second(s)"
|
||||
if [ $( echo "$REPLAY_DELAY >= $REPLAY_CRITICAL_DELAY"|bc -l ) -gt 0 ]
|
||||
then
|
||||
echo "CRITICAL: last received LSN is not the last replayed ('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and replay delay is $REPLAY_DELAY second(s)"
|
||||
exit 2
|
||||
fi
|
||||
if [ $( echo "$REPLAY_DELAY >= $REPLAY_WARNING_DELAY"|bc -l ) -gt 0 ]
|
||||
then
|
||||
echo "WARNING: last received LSN is not the last replay file ('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and replay delay is $REPLAY_DELAY second(s)"
|
||||
exit 1
|
||||
fi
|
||||
debug "Replay delay is not worrying"
|
||||
fi
|
||||
debug "Last received LSN is the last replayed file"
|
||||
# The last received LSN is the last replayed ?
|
||||
if [ "$LAST_RECEIVED_LSN" != "$LAST_REPLAYED_LSN" ]
|
||||
then
|
||||
debug "/!\ The last received LSN is NOT the last replayed LSN ('$M_CUR_LSN' / '$LAST_REPLAYED_LSN')"
|
||||
REPLAY_DELAY="$( psql_get 'SELECT EXTRACT(EPOCH FROM now() - pg_last_xact_replay_timestamp());' )"
|
||||
debug "Replay delay is $REPLAY_DELAY second(s)"
|
||||
if [ $( echo "$REPLAY_DELAY >= $REPLAY_CRITICAL_DELAY"|bc -l ) -gt 0 ]
|
||||
then
|
||||
echo "CRITICAL: last received LSN is not the last replayed ('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and replay delay is $REPLAY_DELAY second(s)"
|
||||
exit 2
|
||||
fi
|
||||
if [ $( echo "$REPLAY_DELAY >= $REPLAY_WARNING_DELAY"|bc -l ) -gt 0 ]
|
||||
then
|
||||
echo "WARNING: last received LSN is not the last replay file ('$LAST_RECEIVED_LSN' / '$LAST_REPLAYED_LSN') and replay delay is $REPLAY_DELAY second(s)"
|
||||
exit 1
|
||||
fi
|
||||
debug "Replay delay is not worrying"
|
||||
fi
|
||||
debug "Last received LSN is the last replayed file"
|
||||
|
||||
# The master last sent LSN is the last received (and synced) ?
|
||||
if [ "$M_CUR_SENT_LSN" != "$LAST_RECEIVED_LSN" ]
|
||||
then
|
||||
echo "WARNING: master last sent LSN is not already received (and synced to disk) by slave. May be we have some network delay or load on slave"
|
||||
echo "Master last sent LSN: $M_CUR_SENT_LSN"
|
||||
echo "Slave last received (and synced to disk) LSN: $LAST_RECEIVED_LSN"
|
||||
exit 1
|
||||
fi
|
||||
# The master last sent LSN is the last received (and synced) ?
|
||||
if [ "$M_CUR_SENT_LSN" != "$LAST_RECEIVED_LSN" ]
|
||||
then
|
||||
echo "WARNING: master last sent LSN is not already received (and synced to disk) by slave. May be we have some network delay or load on slave"
|
||||
echo "Master last sent LSN: $M_CUR_SENT_LSN"
|
||||
echo "Slave last received (and synced to disk) LSN: $LAST_RECEIVED_LSN"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
echo "OK: Hot-standby server is uptodate"
|
||||
exit 0
|
||||
echo "OK: Hot-standby server is up-to-date"
|
||||
echo "Replication state: $M_CUR_SYNC_STATE"
|
||||
echo "Last sent/writed LSN: '$M_CUR_SENT_LSN' / '$M_CUR_WRITED_LSN'"
|
||||
[ "$LAST_RECEIVED_LSN" != "$LAST_REPLAYED_LSN" ] && echo "Replay delay: ${REPLAY_DELAY}s"
|
||||
exit 0
|
||||
else
|
||||
debug "File recovery.conf not found. Master mode."
|
||||
debug "File recovery.conf not found. Master mode."
|
||||
|
||||
# Check recovery mode
|
||||
if [ $RECOVERY_MODE -eq 1 ]
|
||||
then
|
||||
echo "CRITICAL: In recovery mode while recovery.conf file not found !"
|
||||
exit 2
|
||||
fi
|
||||
debug "Postgres is not in recovery mode"
|
||||
# Check recovery mode
|
||||
if [ $RECOVERY_MODE -eq 1 ]
|
||||
then
|
||||
echo "CRITICAL: In recovery mode while recovery.conf file not found !"
|
||||
exit 2
|
||||
fi
|
||||
debug "Postgres is not in recovery mode"
|
||||
|
||||
# Retreive current lsn
|
||||
CURRENT_LSN=$( psql_get "SELECT $pg_current_wal_lsn" )
|
||||
if [ -z "$CURRENT_LSN" ]
|
||||
then
|
||||
echo "UNKNOWN: Fail to retreive current LSN (Log Sequence Number)"
|
||||
exit 3
|
||||
fi
|
||||
debug "Current LSN: $CURRENT_LSN"
|
||||
# Retrieve current lsn
|
||||
CURRENT_LSN=$( psql_get "SELECT $pg_current_wal_lsn" )
|
||||
if [ -z "$CURRENT_LSN" ]
|
||||
then
|
||||
echo "UNKNOWN: Fail to retrieve current LSN (Log Sequence Number)"
|
||||
exit 3
|
||||
fi
|
||||
debug "Current LSN: $CURRENT_LSN"
|
||||
|
||||
# Check standby client
|
||||
STANDBY_CLIENTS=$( psql_get "SELECT application_name, client_addr, sent_lsn, write_lsn, state, sync_state, current_lag
|
||||
FROM (
|
||||
SELECT application_name, client_addr, sent_lsn, write_lsn, state, sync_state, current_lag
|
||||
FROM (
|
||||
SELECT application_name, client_addr, $sent_lsn AS sent_lsn, $write_lsn AS write_lsn, state, sync_state,
|
||||
$pg_wal_lsn_diff($pg_current_wal_lsn, $write_lsn) AS current_lag
|
||||
FROM pg_stat_replication
|
||||
) AS s2
|
||||
) AS s1" )
|
||||
if [ ! -n "$STANDBY_CLIENTS" ]
|
||||
then
|
||||
echo "WARNING: no stand-by client connected"
|
||||
exit 1
|
||||
fi
|
||||
debug "Stand-by client(s):\n\t$( echo -e "$STANDBY_CLIENTS"|sed 's/\n/\n\t/' )"
|
||||
# Check standby client
|
||||
STANDBY_CLIENTS=$( psql_get "SELECT application_name, client_addr, sent_lsn, write_lsn, state, sync_state, current_lag
|
||||
FROM (
|
||||
SELECT application_name, client_addr, sent_lsn, write_lsn, state, sync_state, current_lag
|
||||
FROM (
|
||||
SELECT application_name, client_addr, $sent_lsn AS sent_lsn, $write_lsn AS write_lsn, state, sync_state,
|
||||
$pg_wal_lsn_diff($pg_current_wal_lsn, $write_lsn) AS current_lag
|
||||
FROM pg_stat_replication
|
||||
) AS s2
|
||||
) AS s1" )
|
||||
if [ ! -n "$STANDBY_CLIENTS" ]
|
||||
then
|
||||
echo "WARNING: no stand-by client connected"
|
||||
exit 1
|
||||
fi
|
||||
debug "Stand-by client(s):\n\t$( echo -e "$STANDBY_CLIENTS"|sed 's/\n/\n\t/' )"
|
||||
|
||||
STANDBY_CLIENTS_TXT=""
|
||||
STANDBY_CLIENTS_COUNT=0
|
||||
CURRENT_LSN_IS_LAST_SENT=1
|
||||
for line in $STANDBY_CLIENTS
|
||||
do
|
||||
let STANDBY_CLIENTS_COUNT=STANDBY_CLIENTS_COUNT+1
|
||||
STANDBY_CLIENTS_TXT=""
|
||||
STANDBY_CLIENTS_COUNT=0
|
||||
CURRENT_LSN_IS_LAST_SENT=1
|
||||
for line in $STANDBY_CLIENTS
|
||||
do
|
||||
let STANDBY_CLIENTS_COUNT=STANDBY_CLIENTS_COUNT+1
|
||||
|
||||
NAME=$( echo $line|cut -d '|' -f 1 )
|
||||
IP=$( echo $line|cut -d '|' -f 2 )
|
||||
SENT_LSN=$( echo $line|cut -d '|' -f 3 )
|
||||
WRITED_LSN=$( echo $line|cut -d '|' -f 4 )
|
||||
STATE=$( echo $line|cut -d '|' -f 5 )
|
||||
SYNC_STATE=$( echo $line|cut -d '|' -f 6 )
|
||||
LAG=$( echo $line|cut -d '|' -f 7 )
|
||||
STANDBY_CLIENTS_TXT="$STANDBY_CLIENTS_TXT\n$NAME ($IP): $STATE/$SYNC_STATE (LSN: sent='$SENT_LSN' / writed='$WRITED_LSN', Lag: ${LAG}b)"
|
||||
[ "$SENT_LSN" != "$CURRENT_LSN" ] && CURRENT_LSN_IS_LAST_SENT=0
|
||||
done
|
||||
NAME=$( echo $line|cut -d '|' -f 1 )
|
||||
IP=$( echo $line|cut -d '|' -f 2 )
|
||||
SENT_LSN=$( echo $line|cut -d '|' -f 3 )
|
||||
WRITED_LSN=$( echo $line|cut -d '|' -f 4 )
|
||||
STATE=$( echo $line|cut -d '|' -f 5 )
|
||||
SYNC_STATE=$( echo $line|cut -d '|' -f 6 )
|
||||
LAG=$( echo $line|cut -d '|' -f 7 )
|
||||
STANDBY_CLIENTS_TXT="$STANDBY_CLIENTS_TXT\n$NAME ($IP): $STATE/$SYNC_STATE (LSN: sent='$SENT_LSN' / writed='$WRITED_LSN', Lag: ${LAG}b)"
|
||||
[ "$SENT_LSN" != "$CURRENT_LSN" ] && CURRENT_LSN_IS_LAST_SENT=0
|
||||
done
|
||||
|
||||
if [ $CURRENT_LSN_IS_LAST_SENT -eq 1 ]
|
||||
then
|
||||
echo "OK: $STANDBY_CLIENTS_COUNT stand-by client(s) connected"
|
||||
EXIT_CODE=0
|
||||
else
|
||||
echo "WARNING: current master LSN is not the last sent to stand-by client(s) connected. May be we have some load ?"
|
||||
EXIT_CODE=1
|
||||
fi
|
||||
if [ $CURRENT_LSN_IS_LAST_SENT -eq 1 ]
|
||||
then
|
||||
echo "OK: $STANDBY_CLIENTS_COUNT stand-by client(s) connected"
|
||||
EXIT_CODE=0
|
||||
else
|
||||
echo "WARNING: current master LSN is not the last sent to stand-by client(s) connected. May be we have some load ?"
|
||||
EXIT_CODE=1
|
||||
fi
|
||||
|
||||
echo "Current master LSN: $CURRENT_LSN"
|
||||
echo -e "$STANDBY_CLIENTS_TXT"
|
||||
exit $EXIT_CODE
|
||||
echo "Current master LSN: $CURRENT_LSN"
|
||||
echo -e "$STANDBY_CLIENTS_TXT"
|
||||
exit $EXIT_CODE
|
||||
fi
|
||||
|
|
|
|||
Loading…
Reference in a new issue