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Top Forums Shell Programming and Scripting Associative array index question Post 303004261 by Riker1204 on Thursday 28th of September 2017 02:59:27 PM
Old 09-28-2017
Eval occured to me because when I trace the output ( bash -x ) I get results like this: DN_COUNT[$NAME]=98 or DN_COUNT[$NAME]=1007 and so on. So of course eval then gives me the desired result. I'm not saying your wrong, but I just don't see how the mangling is occuring.

Also I did write the whole thing from scratch, which try not to laugh, I will post here. I didn't copy / paste anything. I tend to use the named pipes to feed with the null delimiter because I know C strings are terminated that way which allows for crazy characters (?Maybe I'm wrong there too!) and the named pipe always avoids subshells which tend to trip me up. It works fine now, but I'm sure you guys could reduce this to like 25% of its size! Not expecting you too to that, just complimenting. I just got done reading "classical shell scripting" and "pro bash programming", but I have no practical experience. Anyways here it is. I will be re-writing it with your guys suggestions. This is my VERY FIRST production script, so again, mea culpa. I will get better at this...

Code:
#! /bin/bash

    systemctl stop crond


    make_dir () {
        for i in "/var/lib/ldap" "/var/lib/ldap/accesslog" "/var/tmp/bdb-log" "/etc/openldap/slapd.d" ; do
            if [ -d "$i" ] ; then
                :
            else
                mkdir "$i"
            fi
        done

        if [ $? -eq 0 ] ; then
            printf "%b\n" "Checking directories:                         [ \e[92mOK\e[0m ]"
        else
            printf "%b\n" "Missing directories, unable to create them:   [ \e[91mFAILED\e[0m ]"
        fi
        cp /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
    }


    set_permissions () {
        for i in "/var/lib/ldap" "/var/tmp/bdb-log" "/etc/openldap/slapd.d" ; do
            chown -R ldap:ldap "$i"
        done

        if [ $? -eq 0 ] ; then
            printf "%b\n" "Setting permissions:                          [ \e[92mOK\e[0m ]"
            return 0
        else
            printf "%b\n" "Unable to set permissions:                    [ \e[91mFAILED\e[0m ]"
            return 1
        fi
    }


    stop_ldap () {
        systemctl stop slapd
        pid_number=$(pgrep slapd)
        if [ $? -eq 0 ] ; then
            kill -9 $pid_number
        else
            :
        fi
    }


    start_ldap () {
        systemctl start slapd
        if [ $? -eq 0 ] && pgrep slapd ; then
            printf "%b\n" "slapd started:                                [ \e[92mOK\e[0m ]"
            return 0
        else
            printf "%b\n" "Unable to start slapd:                        [ \e[91mFAILED\e[0m ]"
            return 1
        fi
    }


    newest_ldif () {
       local_ldif_count="$(find /localbackup/ldap -name "*.ldif" | wc -l)"
       remote_ldif_count="$(find /backup/ldap -name "*.ldif" | wc -l)"
       if [ -d "/localbackup/ldap" ] && [ "$local_ldif_count" -ge 2 ] ; then
           readarray ldif_array < <(ls -lrt /localbackup/ldap/ )
           total=${#ldif_array[@]}
           NEWEST_LDIF="$(printf "%s" "${ldif_array[total-1]}" | awk '{ print $9 }' )"
           printf "%b%b%b\n" "Found local ldif: " "${NEWEST_LDIF}"  "       [ \e[92mOK\e[0m ]"
           PATH_TO_FILE="/localbackup/ldap/"
           LOCAL_NUMBER_OF_DN=$(grep -E "dn: " /localbackup/ldap/${NEWEST_LDIF} | wc -l )
           printf "%s\n" "Selected LDIF has ${LOCAL_NUMBER_OF_DN} DNs"
       elif [ -d "/backup/ldap" ] && [ "$remote_ldif_count" -ge 1 ] ; then
           printf "%b\n" "Local ldif not found checking NFS server:     [ \e[93mWARNING\e[0m ]"
           readarray ldif_array < <(ls -lrt /backup/ldap/ )
           total=${#ldif_array[@]}
           NEWEST_LDIF="$(printf "%s" "${ldif_array[total-1]}" | awk '{ print $9 }' )"
           printf "%b%b%b\n" "Found remote ldif: " "${NEWEST_LDIF}"  "          [ \e[92mOK\e[0m ]"
           PATH_TO_FILE="/backup/ldap/"
           REMOTE_NUMBER_OF_DN=$(grep -E "dn: " /backup/ldap/${NEWEST_LDIF} | wc -l )
           printf "%s\n" "Selected LDIF has ${REMOTE_NUMBER_OF_DN} DNs"
       else
          printf "%b\n" "Can not find an ldif, exiting...                [ \e[91mFAILED\e[0m ]"
          sleep 5s
          exit 1
       fi
    }


    dn_number () {
       LDIF_LOCAL_NUMBER=$(find /localbackup/ldap -name "*.ldif" 2> /dev/null | wc -l)
       LDIF_REMOTE_NUMBER=$(find /backup/ldap -name "*.ldif" 2> /dev/null | wc -l )

       read -d "\0" -a DN_ARRAY < <(ls -rlt /localbackup/ldap/ | awk '{ print $9 }' )

       if [ -d /localbackup/ldap ] && [ $LDIF_LOCAL_NUMBER -ge 1 ]
       then
           DN_PATH="/localbackup/ldap/"
       elif [ -d /backup/ldap ] && [ $LDIF_REMOTE_NUMBER -ge 1 ]
       then
           DN_PATH="/backup/ldap/"
       else
           printf "%s\n" "Can't find an LDIF file, have to exit...."
           exit 1
       fi

       printf "%s\n" "The following LDIFs have the highest DN counts:"


       for k in "${DN_ARRAY[@]}"
       do
           NUMBER_OF_DN=$(grep -E "dn: " ${DN_PATH}${k} | wc -l)
           printf "%s%s\n" "${k}:  " "$NUMBER_OF_DN"
       done |
       sort -rn -k 2 | head -n 5
       sleep 10s
    }

    case $1 in
    repair)    repair=true
               ;;
    testdb)    testdb=true
               ;;
    restore)   restore=true
               ;;
    rebuild)   rebuild=true
               ;;
    *)         printf "%s\n\n" "Usage ldap.sh <repair|restore|rebuild|test>"
               printf "%s\n"   "repair     ---> try to repair existing db via db_recover"
               printf "%s\n"   "restore    ---> try to restore from latest backup via slapadd"
               printf "%s\n"   "rebuild    ---> rebuild everything and restore latest backup"
               printf "%s\n\n" "testdb     ---> test service health; return a search"
               exit 1
               ;;
    esac

    if [ "$repair" = true ] ; then
        stop_ldap
        db_recover -v -f -h /var/lib/ldap
        set_permissions
        if [ $? -eq 0 ] ; then
            printf "%b\n" "db recovery complete:                         [ \e[92mOK\e[0m ]"
        else
            printf "%b\n" "db recovery could not complete:               [ \e[91mFAILED\e[0m ]"
        fi
        start_ldap

    fi

    if [ "$restore" = true ] ; then
        stop_ldap
        printf "%s\n" "backing up db directory"
        tar czf /localbackup/ldap-db-backup.tar /var/lib/ldap
        rm -rf /var/lib/ldap/*
        rm -rf /etc/openldap/slapd.d/*
        rm -rf /var/tmp/bdb-log/*
        make_dir
        set_permissions
        slaptest -f /localbackup/slapd.conf -F /etc/openldap/slapd.d
        set_permissions
        start_ldap
        sleep 5s
        stop_ldap
        newest_ldif
        dn_number
        slapadd -n 1 -l ${PATH_TO_FILE}${NEWEST_LDIF}
        if [ $? -eq 0 ] ; then
            printf "%b\n" "ldif import successful:                       [ \e[92mOK\e[0m ]"
        else
            printf "%b\n" "ldif import was not successful:               [ \e[91mFAILED\e[0m ]"
        fi
        set_permissions
        start_ldap
    fi

    if [ "$rebuild" = true ] ; then
        stop_ldap
        printf "%s" "backing up database"
        tar czf /localbackup/ldap-db-backup.tar /var/lib/ldap
        yum -y remove openldap-servers
        yum -y install openldap-servers
        rm -rf /var/lib/ldap/*
        rm -rf /etc/openldap/slapd.d/*
        rm -rf /var/tmp/bdb-log/*
        make_dir
        set_permissions
        slaptest -f /localbackup/slapd.conf -F /etc/openldap/slapd.d
        set_permissions
        start_ldap
        sleep 5s
        stop_ldap
        newest_ldif
        dn_number
        slapadd -n 1 -l ${PATH_TO_FILE}${NEWEST_LDIF}
        if [ $? -eq 0 ] ; then
            printf "%b\n" "ldif import successful:                       [ \e[92mOK\e[0m ]"
        else
            printf "%b\n" "ldif import was not successful:               [ \e[91mFAILED\e[0m ]"
        fi
        set_permissions
        start_ldap
      fi

    if [ "$testdb" = true ] ; then
        for i in 'cn=Standard' ; do
           if ldapsearch -h localhost -p 389 -D "cn=root,dc=removed,dc=com" -w 'removed' -b "dc=removed" \
               "(${i})" 2> /dev/null | grep -E "numEntries: 1"
           then
               printf "%b\n" "found ${i}:                                    [ \e[92mOK\e[0m ]"
               ldapsearch -h localhost -p 389 -D "cn=root,dc=removeddc=com" -w 'removed -b "dc=celeritas,dc=com" \
               "(${i})" | grep -E "(dn: )|(cn: )|(uid: )"
           elif ldapsearch -h localhost -p 389 -D "cn=root,dc=removed,dc=com" -w 'removed -b "dc=removed" \
                "(${i})" 2>&1 | grep -E "Can't contact LDAP server"
           then
               printf "%b\n" "Can not find ${i}:                             [ \e[91mFAILED\e[0m ]"
           fi
        done
    fi

    systemctl start crond

And I wan't to say thanks again for your help and patience.

Last edited by Riker1204; 09-28-2017 at 10:06 PM..
 

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