Setup zabbix-server22 » Historie » Revision 3
Revision 2 (Jeremias Keihsler, 13.01.2017 09:18) → Revision 3/4 (Jeremias Keihsler, 13.01.2017 09:18)
h1. Install Zabbix Server 2.2.x h2. preliminary note this procedure is based on [[dw_os_cos6:Setup_zabbix-server22]] [[dw_os_cos7:Setup_zabbix-server22]] you may also check https://www.zabbix.com/documentation/2.2/manual/installation/install_from_packages **this procedure has not yet been used or tested, use with caution** remove this flag as soon as the first installation has succeeded. * [[repo_epel|EPEL]] * [[setup_apache| Apache]] * [[setup_mariadb| MariaDB]] h2. Server-Install <pre><code class="bash"> yum update yum install httpd httpd-devel yum install zabbix22-server-mysql zabbix22-agent zabbix22-web-mysql yum install mariadb-server systemctl start httpd.service systemctl enable httpd.service systemctl start mariadb.service systemctl enable mariadb.service /usr/bin/mysql_secure_installation mysql -u root -p </code></pre> <pre><code class="bash"> mysql> create database zabbix character set utf8 collate utf8_bin; mysql> grant all privileges on zabbix.* to zabbix@localhost identified by 'password'; mysql> exit </code></pre> <pre><code class="bash"> cd /usr/share/zabbix-mysql/ mysql -u root -p zabbix < schema.sql mysql -u root -p zabbix < images.sql mysql -u root -p zabbix < data.sql vim /etc/zabbix/zabbix_server.conf </code></pre> <pre> # line 116: uncomment and add DB password for Zabbix DBPassword=password </pre> <pre><code class="bash"> vim /etc/zabbix/zabbix_agentd.conf </code></pre> <pre> # line 133: change to your hostname Hostname=zabbix.server.com </pre> <pre><code class="bash"> vim /etc/php.ini </code></pre> <pre> # line 384: change to Zabbix recommended max_execution_time = 300 # line 394: change to Zabbix recommended max_input_time = 300 # line 405: change to Zabbix recommended memory_limit = 128M # line 672: change to Zabbix recommended post_max_size = 16M # line 800: change to Zabbix recommended upload_max_filesize = 2M # line 879: uncomment and add your timezone date.timezone = Europe/Vienna </pre> <pre><code class="bash"> systemctl start zabbix-server systemctl enable zabbix-server-mysql systemctl start zabbix-agent systemctl enable zabbix-agent systemctl restart httpd </code></pre> h3. Firewall if you are going to monitor other systems than the @localhost@ then you have to open ports @10050@ and @10051@ <pre><code class="bash"> firewall-cmd --permanent --add-port=10050/tcp firewall-cmd --permanent --add-port=10051/tcp systemctl restart firewalld </code></pre> h3. SELinux as SELinux prevents the web-client to establish a connection to @localhost:10050@ you will get a wrong indication on Server-Status. Allow access to the server via <pre><code class="bash"> setsebool -P httpd_can_connect_zabbix 1 </code></pre> h1. Backup Zabbix config is taken from https://github.com/maxhq/zabbix-backup/ This script is a simple way to backup all configuration tables (eg. templates, hostgroups, hosts, triggers…) without the history data. As the result is very small, is possible run this backup many times per day. The backup-script may be invoked by cron @/etc/cron.d/zabbix-backup@ <pre> # JKE 2016-04-10 # # minute hour day month dayofweek # m h d m d # - - - - - # | | | | | # | | | | +-day of week (0-7) sunday=0 or 7 # | | | +---month (1-12) # | | +-----day of month (1-31) # | +-------hour (0-23) # +---------min (0-59) # 5 1 * * * root /usr/local/bin/zabbix-mysql-backupconf.sh -p password -o /var/cache/myzabbixdump -r 5 -q </pre> @zabbix-mysql-backupconf.sh@ <pre> #!/usr/bin/env bash # # NAME # zabbix-mysql-dump - Configuration Backup for Zabbix with MySQL # # SYNOPSIS # This is a MySQL configuration backup script for Zabbix 1.x and 2.x. # It does a full backup of all configuration tables, but only a schema # backup of large data tables. # # The script is based on a script by Ricardo Santos # (http://zabbixzone.com/zabbix/backuping-only-the-zabbix-configuration/) # # CONTRIBUTORS # - Ricardo Santos # - Jens Berthold (maxhq) # - Oleksiy Zagorskyi (zalex) # - Petr Jendrejovsky # - Jonathan Bayer # - Andreas Niedermann (dre-) # - Mi?u Moldovan (dumol) # - Daniel Schneller (dschneller) # # HISTORY # 0.8.0 (2016-01-22) # FIX: Only invoke `dig` if available # ENH: Option -c to use a MySQL config ("options") file (suggested by Daniel Schneller) # ENH: Option -r to rotate backup files (Daniel Schneller) # ENH: Add database version to filename if available # ENH: Add quiet mode. IP reverse lookup optional (Daniel Schneller) # ENH: Bash related fixes (Misu Moldovan) # CHG: Default output directory is now $PWD instead of script dir # # 0.7.1 (2015-01-27) # NEW: Parsing of commandline arguments implemented # ENH: Try reverse lookup of IPs and include hostname/IP in filename # REV: Stop if database password is wrong # # 0.7.0 (2014-10-02) # ENH: Complete overhaul to make script work with lots of Zabbix versions # # 0.6.0 (2014-09-15) # REV: Updated the table list for use with zabbix v2.2.3 # # 0.5.0 (2013-05-13) # NEW: Added table list comparison between database and script # # 0.4.0 (2012-03-02) # REV: Incorporated mysqldump options (suggested by Jonathan Bayer) # # 0.3.0 (2012-02-06) # ENH: Backup of Zabbix 1.9.x / 2.0.0, removed unnecessary use of # variables (DATEBIN etc) for commands that use to be in $PATH # # 0.2.0 (2011-11-05) # # AUTHOR # Jens Berthold (maxhq), 2016 # # DEFAULT VALUES # # DO NOT EDIT THESE VALUES! # Instead, use command line parameters or a config file to specify options. # DUMPDIR="$PWD" DBHOST="127.0.0.1" DBNAME="zabbix" DBUSER="zabbix" DBPASS="" QUIET="no" REVERSELOOKUP="yes" GENERATIONSTOKEEP=0 # # SHOW HELP # if [ -z "$1" ]; then cat <<EOF USAGE $(basename $BASH_SOURCE) [options] OPTIONS -h HOST Hostname/IP of MySQL server. Default: $DBHOST -d DATABASE Zabbix database name. Default: $DBNAME -u USER MySQL user to access Zabbix database. Default: $DBUSER -p PASSWORD MySQL user password (specify "-" for a prompt). Default: no password -o DIR Save Zabbix MySQL dumps to DIR. Default: $DUMPDIR -c FILE Use FILE for MySQL options (passed via --defaults-extra-file). PLEASE NOTE: mysqldump needs the database to be specified via command line. So the first "database" options found in the config file is used for mysqldump. -r NUM Rotate backups while keeping up to NUM generations. Uses filename to match. Default: keep all backups -n Skip reverse lookup of IP address for host. -q Quiet mode: no output except for errors (for batch/crontab use). EXAMPLES $(basename $BASH_SOURCE) -h 1.2.3.4 -d zabbixdb -u zabbix -p test $(basename $BASH_SOURCE) -u zabbix -p - -o /tmp $(basename $BASH_SOURCE) -c /etc/mysql/mysql.cnf $(basename $BASH_SOURCE) -c /etc/mysql/mysql.cnf -d zabbixdb EOF exit 1 fi # # PARSE COMMAND LINE ARGUMENTS # DB_GIVEN=0 while getopts ":h:d:u:p:o:r:c:qn" opt; do case $opt in h) DBHOST="$OPTARG" ;; d) DBNAME="$OPTARG"; DB_GIVEN=1 ;; u) DBUSER="$OPTARG" ;; p) DBPASS="$OPTARG" ;; c) CNFFILE="$OPTARG" ;; o) DUMPDIR="$OPTARG" ;; r) GENERATIONSTOKEEP=$(printf '%.0f' "$OPTARG") ;; n) REVERSELOOKUP="no" ;; q) QUIET="yes" ;; \?) echo "Invalid option: -$OPTARG" >&2; exit 1 ;; :) echo "Option -$OPTARG requires an argument" >&2; exit 1 ;; esac done # Password prompt if [ "$DBPASS" = "-" ]; then read -s -p "Enter MySQL password for user '$DBUSER' (input will be hidden): " DBPASS echo "" fi # Config file validations if [ ! -z "$CNFFILE" ]; then if [ ! -r "$CNFFILE" ]; then echo "ERROR: Cannot read configuration file $CNFFILE" >&2 exit 1 fi # Database name needs special treatment: # For mysqldump it has to be specified on the command line! # Therefore we need to get it from the config file if [ $DB_GIVEN -eq 0 ]; then DBNAME=$(grep -m 1 ^database= "$CNFFILE" | cut -d= -f2) fi fi # # CONSTANTS # MYSQL_OPTS=() [ ! -z "$CNFFILE" ] && MYSQL_OPTS=("${MYSQL_OPTS[@]}" --defaults-extra-file="$CNFFILE") [ ! -z "$DBHOST" ] && MYSQL_OPTS=("${MYSQL_OPTS[@]}" -h $DBHOST) [ ! -z "$DBUSER" ] && MYSQL_OPTS=("${MYSQL_OPTS[@]}" -u $DBUSER) [ ! -z "$DBPASS" ] && MYSQL_OPTS=("${MYSQL_OPTS[@]}" -p"$DBPASS") MYSQL_OPTS_BATCH=("${MYSQL_OPTS[@]}" --batch --silent) [ ! -z "$DBNAME" ] && MYSQL_OPTS_BATCH=("${MYSQL_OPTS_BATCH[@]}" -D $DBNAME) # Host name: try reverse lookup if IP is given DBHOSTNAME="$DBHOST" command -v dig >/dev/null 2>&1 FIND_DIG=$? if [ "$REVERSELOOKUP" == "yes" -a $FIND_DIG -eq 0 ]; then # Try resolving a given host ip newHostname=$(dig +noall +answer -x $DBHOST | sed -r 's/((\S+)\s+)+([^\.]+)\..*/\3/') test \! -z "$newHostname" && DBHOSTNAME="$newHostname" fi # # CONFIG DUMP # if [ "$QUIET" == "no" ]; then cat <<-EOF Configuration: - host: $DBHOST ($DBHOSTNAME) - database: $DBNAME - user: $DBUSER - output: $DUMPDIR EOF fi # # FUNCTIONS # # Returns TRUE if argument 1 is part of the given array (remaining arguments) elementIn () { local e for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done return 1 } # # CHECKS # if [ ! -x /usr/bin/mysqldump ]; then echo "mysqldump not found." >&2 echo "(with Debian, \"apt-get install mysql-client\" will help)" >&2 exit 1 fi # # READ TABLE LIST from __DATA__ section at the end of this script # (http://stackoverflow.com/a/3477269/2983301) # DATA_TABLES=() while read line; do table=$(echo "$line" | cut -d" " -f1) echo "$line" | cut -d" " -f5 | grep -qi "DATA" test $? -eq 0 && DATA_TABLES+=($table) done < <(sed '0,/^__DATA__$/d' "$BASH_SOURCE" | tr -s " ") # paranoid check if [ ${#DATA_TABLES[@]} -lt 5 ]; then echo "ERROR: The number of large data tables configured in this script is less than 5." >&2 exit 1 fi # # BACKUP # # Read table list from database [ "$QUIET" == "no" ] && echo "Fetching list of existing tables..." DB_TABLES=$(mysql "${MYSQL_OPTS_BATCH[@]}" -e "SELECT table_name FROM information_schema.tables WHERE table_schema = '$DBNAME'" 2>&1) if [ $? -ne 0 ]; then echo -e "ERROR while trying to access database:\n$DB_TABLES" 2>&1; exit 1; fi DB_TABLES=$(echo "$DB_TABLES" | sort) DB_TABLE_NUM=$(echo "$DB_TABLES" | wc -l) # Query Zabbix database version VERSION="" DB_VER=$(mysql "${MYSQL_OPTS_BATCH[@]}" -N -e "select optional from dbversion;" 2>&1) if [ $? -eq 0 ]; then # version string is like: 02030015 re='(.*)([0-9]{2})([0-9]{4})' if [[ $DB_VER =~ $re ]]; then VERSION="_db-${BASH_REMATCH[1]}.$(( ${BASH_REMATCH[2]} + 0 )).$(( ${BASH_REMATCH[3]} + 0 ))" fi fi # Assemble file name DUMPFILENAME_PREFIX="zabbix_cfg_${DBHOSTNAME}" DUMPFILEBASE="${DUMPFILENAME_PREFIX}_$(date +%Y%m%d-%H%M)${VERSION}.sql" DUMPFILE="$DUMPDIR/$DUMPFILEBASE" PROCESSED_DATA_TABLES=() i=0 mkdir -p "${DUMPDIR}" [ "$QUIET" == "no" ] && echo "Starting table backups..." while read table; do # large data tables: only store schema if elementIn "$table" "${DATA_TABLES[@]}"; then dump_opt="--no-data" PROCESSED_DATA_TABLES+=($table) # configuration tables: full dump else dump_opt="--extended-insert=FALSE" fi mysqldump "${MYSQL_OPTS[@]}" \ --routines --opt --single-transaction --skip-lock-tables \ $dump_opt \ $DBNAME --tables ${table} >> "$DUMPFILE" if [ "$QUIET" == "no" ]; then # show percentage i=$((i+1)); i_percent=$(($i * 100 / $DB_TABLE_NUM)) if [ $(($i_percent % 12)) -eq 0 ]; then echo -n "${i_percent}%" else if [ $(($i_percent % 2)) -eq 0 ]; then echo -n "."; fi fi fi done <<<"$DB_TABLES" # # COMPRESS BACKUP # if [ "$QUIET" == "no" ]; then echo -e "\n" echo "For the following large tables only the schema (without data) was stored:" for table in "${PROCESSED_DATA_TABLES[@]}"; do echo " - $table"; done echo echo "Compressing backup file..." fi gzip -f "$DUMPFILE" if [ $? -ne 0 ]; then echo -e "\nERROR: Could not compress backup file, see previous messages" >&2 exit 1 fi [ "$QUIET" == "no" ] && echo -e "\nBackup Completed:\n${DUMPFILE}.gz" # # ROTATE OLD BACKUPS # if [ $GENERATIONSTOKEEP -gt 0 ]; then [ "$QUIET" == "no" ] && echo "Removing old backups, keeping up to $GENERATIONSTOKEEP" REMOVE_OLD_CMD="cd \"$DUMPDIR\" && ls -t \"${DUMPFILENAME_PREFIX}\"* | /usr/bin/awk \"NR>${GENERATIONSTOKEEP}\" | xargs rm -f " eval ${REMOVE_OLD_CMD} if [ $? -ne 0 ]; then echo "ERROR: Could not rotate old backups" >&2 exit 1 fi fi exit 0 ################################################################################ # List of all known table names and a flag indicating data (=large) tables # __DATA__ acknowledges 1.3.1 - 2.4.0 DATA actions 1.3.1 - 2.4.0 alerts 1.3.1 - 2.4.0 DATA application_template 2.1.0 - 2.4.0 applications 1.3.1 - 2.4.0 auditlog 1.3.1 - 2.4.0 DATA auditlog_details 1.7 - 2.4.0 DATA autoreg 1.3.1 - 1.3.4 autoreg_host 1.7 - 2.4.0 conditions 1.3.1 - 2.4.0 config 1.3.1 - 2.4.0 dbversion 2.1.0 - 2.4.0 dchecks 1.3.4 - 2.4.0 dhosts 1.3.4 - 2.4.0 drules 1.3.4 - 2.4.0 dservices 1.3.4 - 2.4.0 escalations 1.5.3 - 2.4.0 events 1.3.1 - 2.4.0 DATA expressions 1.7 - 2.4.0 functions 1.3.1 - 2.4.0 globalmacro 1.7 - 2.4.0 globalvars 1.9.6 - 2.4.0 graph_discovery 1.9.0 - 2.4.0 graph_theme 1.7 - 2.4.0 graphs 1.3.1 - 2.4.0 graphs_items 1.3.1 - 2.4.0 group_discovery 2.1.4 - 2.4.0 group_prototype 2.1.4 - 2.4.0 groups 1.3.1 - 2.4.0 help_items 1.3.1 - 2.1.8 history 1.3.1 - 2.4.0 DATA history_log 1.3.1 - 2.4.0 DATA history_str 1.3.1 - 2.4.0 DATA history_str_sync 1.3.1 - 2.2.6 DATA history_sync 1.3.1 - 2.2.6 DATA history_text 1.3.1 - 2.4.0 DATA history_uint 1.3.1 - 2.4.0 DATA history_uint_sync 1.3.1 - 2.2.6 DATA host_discovery 2.1.4 - 2.4.0 host_inventory 1.9.6 - 2.4.0 host_profile 1.9.3 - 1.9.5 hostmacro 1.7 - 2.4.0 hosts 1.3.1 - 2.4.0 hosts_groups 1.3.1 - 2.4.0 hosts_profiles 1.3.1 - 1.9.2 hosts_profiles_ext 1.6 - 1.9.2 hosts_templates 1.3.1 - 2.4.0 housekeeper 1.3.1 - 2.4.0 httpstep 1.3.3 - 2.4.0 httpstepitem 1.3.3 - 2.4.0 httptest 1.3.3 - 2.4.0 httptestitem 1.3.3 - 2.4.0 icon_map 1.9.6 - 2.4.0 icon_mapping 1.9.6 - 2.4.0 ids 1.3.3 - 2.4.0 images 1.3.1 - 2.4.0 interface 1.9.1 - 2.4.0 interface_discovery 2.1.4 - 2.4.0 item_condition 2.3.0 - 2.4.0 item_discovery 1.9.0 - 2.4.0 items 1.3.1 - 2.4.0 items_applications 1.3.1 - 2.4.0 maintenances 1.7 - 2.4.0 maintenances_groups 1.7 - 2.4.0 maintenances_hosts 1.7 - 2.4.0 maintenances_windows 1.7 - 2.4.0 mappings 1.3.1 - 2.4.0 media 1.3.1 - 2.4.0 media_type 1.3.1 - 2.4.0 node_cksum 1.3.1 - 2.2.6 node_configlog 1.3.1 - 1.4.7 nodes 1.3.1 - 2.2.6 opcommand 1.9.4 - 2.4.0 opcommand_grp 1.9.2 - 2.4.0 opcommand_hst 1.9.2 - 2.4.0 opconditions 1.5.3 - 2.4.0 operations 1.3.4 - 2.4.0 opgroup 1.9.2 - 2.4.0 opmediatypes 1.7 - 1.8.21 opmessage 1.9.2 - 2.4.0 opmessage_grp 1.9.2 - 2.4.0 opmessage_usr 1.9.2 - 2.4.0 optemplate 1.9.2 - 2.4.0 profiles 1.3.1 - 2.4.0 proxy_autoreg_host 1.7 - 2.4.0 proxy_dhistory 1.5 - 2.4.0 proxy_history 1.5.1 - 2.4.0 regexps 1.7 - 2.4.0 rights 1.3.1 - 2.4.0 screens 1.3.1 - 2.4.0 screens_items 1.3.1 - 2.4.0 scripts 1.5 - 2.4.0 service_alarms 1.3.1 - 2.4.0 services 1.3.1 - 2.4.0 services_links 1.3.1 - 2.4.0 services_times 1.3.1 - 2.4.0 sessions 1.3.1 - 2.4.0 slides 1.3.4 - 2.4.0 slideshows 1.3.4 - 2.4.0 sysmap_element_url 1.9.0 - 2.4.0 sysmap_url 1.9.0 - 2.4.0 sysmaps 1.3.1 - 2.4.0 sysmaps_elements 1.3.1 - 2.4.0 sysmaps_link_triggers 1.5 - 2.4.0 sysmaps_links 1.3.1 - 2.4.0 timeperiods 1.7 - 2.4.0 trends 1.3.1 - 2.4.0 DATA trends_uint 1.5 - 2.4.0 DATA trigger_depends 1.3.1 - 2.4.0 trigger_discovery 1.9.0 - 2.4.0 triggers 1.3.1 - 2.4.0 user_history 1.7 - 2.4.0 users 1.3.1 - 2.4.0 users_groups 1.3.1 - 2.4.0 usrgrp 1.3.1 - 2.4.0 valuemaps 1.3.1 - 2.4.0 </pre>