osdmaptool: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/osdmaptool - from package: ceph

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/osdmaptool - from package: ceph

You may install the required package with command apt-get install {package}

Error in other languages:
osdmaptool: bevel nie gevind nie
osdmaptool: comandă negăsită
osdmaptool: comando não encontrado
osdmaptool: commande introuvable
osdmaptool: command not found
osdmaptool: käsku ei ole
osdmaptool: không tìm thấy lệnh
osdmaptool: komanda nerasta
osdmaptool: Kommando nicht gefunden.
osdmaptool: kommandot finns inte
osdmaptool: komut yok
osdmaptool: nie znaleziono polecenia
osdmaptool: níor aimsíodh an t-ordú
osdmaptool: no se encontró la orden
osdmaptool: no s'ha trobat l'ordre
osdmaptool: opdracht niet gevonden
osdmaptool: parancs nem található
osdmaptool: perintah tidak ditemukan
osdmaptool: príkaz nenájdený
osdmaptool: příkaz nenalezen
osdmaptool: команда не найдена
osdmaptool: командата не е открита
osdmaptool: 命令找不到
osdmaptool: コマンドが見つかりません