原 使用脚本sshUserSetup.sh配置节点之间的互信（免密登陆）
Tags： Oracle原创LinuxGreenPlum互信免密登陆
👉 本文共约213个字，系统预计阅读时间或需1分钟。
脚本sshUserSetup.sh内容
来源于Oracle的rac脚本，做了适量的调整
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 | cat > /tmp/sshUserSetup.sh <<"EOF" #!/bin/sh # Nitin Jerath - Aug 2005 # ./sshUserSetup.sh -user pg16 -hosts "192.92.0.23 192.92.0.42" -advanced -noPromptPassphrase -confirm # ./sshUserSetup.sh -user gpadmin -hosts "lhrpg01 lhrpg02" -advanced -noPromptPassphrase -confirm # chmod 600 /home/gpadmin/.ssh/config #Usage sshUserSetup.sh -user <user name> [ -hosts \"<space separated hostlist>\" | -hostfile <absolute path of cluster configuration file> ] [ -advanced ] [ -verify] [ -exverify ] [ -logfile <desired absolute path of logfile> ] [-confirm] [-shared] [-help] [-usePassphrase] [-noPromptPassphrase] #eg. sshUserSetup.sh -hosts "host1 host2" -user oracle -advanced #This script is used to setup SSH connectivity from the host on which it is # run to the specified remote hosts. After this script is run, the user can use # SSH to run commands on the remote hosts or copy files between the local host # and the remote hosts without being prompted for passwords or confirmations. # The list of remote hosts and the user name on the remote host is specified as # a command line parameter to the script. Note that in case the user on the # remote host has its home directory NFS mounted or shared across the remote # hosts, this script should be used with -shared option. #Specifying the -advanced option on the command line would result in SSH # connectivity being setup among the remote hosts which means that SSH can be # used to run commands on one remote host from the other remote host or copy # files between the remote hosts without being prompted for passwords or # confirmations. #Please note that the script would remove write permissions on the remote hosts #for the user home directory and ~/.ssh directory for "group" and "others". This # is an SSH requirement. The user would be explicitly informed about this by teh script and prompted to continue. In case the user presses no, the script would exit. In case the user does not want to be prompted, he can use -confirm option. # As a part of the setup, the script would use SSH to create files within ~/.ssh # directory of the remote node and to setup the requisite permissions. The #script also uses SCP to copy the local host public key to the remote hosts so # that the remote hosts trust the local host for SSH. At the time, the script #performs these steps, SSH connectivity has not been completely setup hence # the script would prompt the user for the remote host password. #For each remote host, for remote users with non-shared homes this would be # done once for SSH and once for SCP. If the number of remote hosts are x, the # user would be prompted 2x times for passwords. For remote users with shared # homes, the user would be prompted only twice, once each for SCP and SSH. #For security reasons, the script does not save passwords and reuse it. Also, # for security reasons, the script does not accept passwords redirected from a #file. The user has to key in the confirmations and passwords at the prompts. #The -verify option means that the user just wants to verify whether SSH has #been set up. In this case, the script would not setup SSH but would only check # whether SSH connectivity has been setup from the local host to the remote # hosts. The script would run the date command on each remote host using SSH. In # case the user is prompted for a password or sees a warning message for a #particular host, it means SSH connectivity has not been setup correctly for # that host. #In case the -verify option is not specified, the script would setup SSH and #then do the verification as well. #In case the user speciies the -exverify option, an exhaustive verification would be done. In that case, the following would be checked: # 1. SSH connectivity from local host to all remote hosts. # 2. SSH connectivity from each remote host to itself and other remote hosts. #echo Parsing command line arguments numargs=$# ADVANCED=false HOSTNAME=`hostname` CONFIRM=no SHARED=false i=1 USR=$USER if test -z "$TEMP" then TEMP=/tmp fi IDENTITY=id_rsa LOGFILE=$TEMP/sshUserSetup_`date +%F-%H-%M-%S`.log VERIFY=false EXHAUSTIVE_VERIFY=false HELP=false PASSPHRASE=no RERUN_SSHKEYGEN=no NO_PROMPT_PASSPHRASE=no while [ $i -le $numargs ] do j=$1 if [ $j = "-hosts" ] then HOSTS=$2 shift 1 i=`expr $i + 1` fi if [ $j = "-user" ] then USR=$2 shift 1 i=`expr $i + 1` fi if [ $j = "-logfile" ] then LOGFILE=$2 shift 1 i=`expr $i + 1` fi if [ $j = "-confirm" ] then CONFIRM=yes fi if [ $j = "-hostfile" ] then CLUSTER_CONFIGURATION_FILE=$2 shift 1 i=`expr $i + 1` fi if [ $j = "-usePassphrase" ] then PASSPHRASE=yes fi if [ $j = "-noPromptPassphrase" ] then NO_PROMPT_PASSPHRASE=yes fi if [ $j = "-shared" ] then SHARED=true fi if [ $j = "-exverify" ] then EXHAUSTIVE_VERIFY=true fi if [ $j = "-verify" ] then VERIFY=true fi if [ $j = "-advanced" ] then ADVANCED=true fi if [ $j = "-help" ] then HELP=true fi i=`expr $i + 1` shift 1 done if [ $HELP = "true" ] then echo "Usage $0 -user <user name> [ -hosts \"<space separated hostlist>\" | -hostfile <absolute path of cluster configuration file> ] [ -advanced ] [ -verify] [ -exverify ] [ -logfile <desired absolute path of logfile> ] [-confirm] [-shared] [-help] [-usePassphrase] [-noPromptPassphrase]" echo "This script is used to setup SSH connectivity from the host on which it is run to the specified remote hosts. After this script is run, the user can use SSH to run commands on the remote hosts or copy files between the local host and the remote hosts without being prompted for passwords or confirmations. The list of remote hosts and the user name on the remote host is specified as a command line parameter to the script. " echo "-user : User on remote hosts. " echo "-hosts : Space separated remote hosts list. " echo "-hostfile : The user can specify the host names either through the -hosts option or by specifying the absolute path of a cluster configuration file. A sample host file contents are below: " echo echo " stacg30 stacg30int 10.1.0.0 stacg30v -" echo " stacg34 stacg34int 10.1.0.1 stacg34v -" echo echo " The first column in each row of the host file will be used as the host name." echo echo "-usePassphrase : The user wants to set up passphrase to encrypt the private key on the local host. " echo "-noPromptPassphrase : The user does not want to be prompted for passphrase related questions. This is for users who want the default behavior to be followed." echo "-shared : In case the user on the remote host has its home directory NFS mounted or shared across the remote hosts, this script should be used with -shared option. " echo " It is possible for the user to determine whether a user's home directory is shared or non-shared. Let us say we want to determine that user user1's home directory is shared across hosts A, B and C." echo " Follow the following steps:" echo " 1. On host A, touch ~user1/checkSharedHome.tmp" echo " 2. On hosts B and C, ls -al ~user1/checkSharedHome.tmp" echo " 3. If the file is present on hosts B and C in ~user1 directory and" echo " is identical on all hosts A, B, C, it means that the user's home " echo " directory is shared." echo " 4. On host A, rm -f ~user1/checkSharedHome.tmp" echo " In case the user accidentally passes -shared option for non-shared homes or viceversa,SSH connectivity would only be set up for a subset of the hosts. The user would have to re-run the setyp script with the correct option to rectify this problem." echo "-advanced : Specifying the -advanced option on the command line would result in SSH connectivity being setup among the remote hosts which means that SSH can be used to run commands on one remote host from the other remote host or copy files between the remote hosts without being prompted for passwords or confirmations." echo "-confirm: The script would remove write permissions on the remote hosts for the user home directory and ~/.ssh directory for "group" and "others". This is an SSH requirement. The user would be explicitly informed about this by the script and prompted to continue. In case the user presses no, the script would exit. In case the user does not want to be prompted, he can use -confirm option." echo "As a part of the setup, the script would use SSH to create files within ~/.ssh directory of the remote node and to setup the requisite permissions. The script also uses SCP to copy the local host public key to the remote hosts so that the remote hosts trust the local host for SSH. At the time, the script performs these steps, SSH connectivity has not been completely setup hence the script would prompt the user for the remote host password. " echo "For each remote host, for remote users with non-shared homes this would be done once for SSH and once for SCP. If the number of remote hosts are x, the user would be prompted 2x times for passwords. For remote users with shared homes, the user would be prompted only twice, once each for SCP and SSH. For security reasons, the script does not save passwords and reuse it. Also, for security reasons, the script does not accept passwords redirected from a file. The user has to key in the confirmations and passwords at the prompts. " echo "-verify : -verify option means that the user just wants to verify whether SSH has been set up. In this case, the script would not setup SSH but would only check whether SSH connectivity has been setup from the local host to the remote hosts. The script would run the date command on each remote host using SSH. In case the user is prompted for a password or sees a warning message for a particular host, it means SSH connectivity has not been setup correctly for that host. In case the -verify option is not specified, the script would setup SSH and then do the verification as well. " echo "-exverify : In case the user speciies the -exverify option, an exhaustive verification for all hosts would be done. In that case, the following would be checked: " echo " 1. SSH connectivity from local host to all remote hosts. " echo " 2. SSH connectivity from each remote host to itself and other remote hosts. " echo The -exverify option can be used in conjunction with the -verify option as well to do an exhaustive verification once the setup has been done. echo "Taking some examples: Let us say local host is Z, remote hosts are A,B and C. Local user is njerath. Remote users are oracle(non-shared), aime(shared)." echo "$0 -user oracle -hosts "A B C" -advanced -exverify -confirm" echo "Script would set up connectivity from Z -> A, Z -> B, Z -> C, A -> A, A -> B, A -> C, B -> A, B -> B, B -> C, C -> A, C -> B, C -> C." echo "Since user has given -exverify option, all these scenario would be verified too." echo echo "Now the user runs : $0 -user oracle -hosts "A B C" -verify" echo "Since -verify option is given, no SSH setup would be done, only verification of existing setup. Also, since -exverify or -advanced options are not given, script would only verify connectivity from Z -> A, Z -> B, Z -> C" echo "Now the user runs : $0 -user oracle -hosts "A B C" -verify -advanced" echo "Since -verify option is given, no SSH setup would be done, only verification of existing setup. Also, since -advanced options is given, script would verify connectivity from Z -> A, Z -> B, Z -> C, A-> A, A->B, A->C, A->D" echo "Now the user runs:" echo "$0 -user aime -hosts "A B C" -confirm -shared" echo "Script would set up connectivity between Z->A, Z->B, Z->C only since advanced option is not given." echo "All these scenarios would be verified too." exit fi if test -z "$HOSTS" then if test -n "$CLUSTER_CONFIGURATION_FILE" && test -f "$CLUSTER_CONFIGURATION_FILE" then HOSTS=`awk '$1 !~ /^#/ { str = str " " $1 } END { print str }' $CLUSTER_CONFIGURATION_FILE` elif ! test -f "$CLUSTER_CONFIGURATION_FILE" then echo "Please specify a valid and existing cluster configuration file." fi fi if test -z "$HOSTS" || test -z $USR then echo "Either user name or host information is missing" echo "Usage $0 -user <user name> [ -hosts \"<space separated hostlist>\" | -hostfile <absolute path of cluster configuration file> ] [ -advanced ] [ -verify] [ -exverify ] [ -logfile <desired absolute path of logfile> ] [-confirm] [-shared] [-help] [-usePassphrase] [-noPromptPassphrase]" exit 1 fi if [ -d $LOGFILE ]; then echo $LOGFILE is a directory, setting logfile to $LOGFILE/ssh.log LOGFILE=$LOGFILE/ssh.log fi echo The output of this script is also logged into $LOGFILE | tee -a $LOGFILE if [ `echo $?` != 0 ]; then echo Error writing to the logfile $LOGFILE, Exiting exit 1 fi echo Hosts are $HOSTS | tee -a $LOGFILE echo user is $USR | tee -a $LOGFILE SSH="/usr/bin/ssh" SCP="/usr/bin/scp" SSH_KEYGEN="/usr/bin/ssh-keygen" calculateOS() { platform=`uname -s` case "$platform" in "SunOS") os=solaris;; "Linux") os=linux;; "HP-UX") os=hpunix;; "AIX") os=aix;; *) echo "Sorry, $platform is not currently supported." | tee -a $LOGFILE exit 1;; esac echo "Platform:- $platform " | tee -a $LOGFILE } calculateOS BITS=1024 ENCR="rsa" deadhosts="" alivehosts="" if [ $platform = "Linux" ] then PING="/bin/ping" else PING="/usr/sbin/ping" fi #bug 9044791 if [ -n "$SSH_PATH" ]; then SSH=$SSH_PATH fi if [ -n "$SCP_PATH" ]; then SCP=$SCP_PATH fi if [ -n "$SSH_KEYGEN_PATH" ]; then SSH_KEYGEN=$SSH_KEYGEN_PATH fi if [ -n "$PING_PATH" ]; then PING=$PING_PATH fi PATH_ERROR=0 if test ! -x $SSH ; then echo "ssh not found at $SSH. Please set the variable SSH_PATH to the correct location of ssh and retry." PATH_ERROR=1 fi if test ! -x $SCP ; then echo "scp not found at $SCP. Please set the variable SCP_PATH to the correct location of scp and retry." PATH_ERROR=1 fi if test ! -x $SSH_KEYGEN ; then echo "ssh-keygen not found at $SSH_KEYGEN. Please set the variable SSH_KEYGEN_PATH to the correct location of ssh-keygen and retry." PATH_ERROR=1 fi if test ! -x $PING ; then echo "ping not found at $PING. Please set the variable PING_PATH to the correct location of ping and retry." PATH_ERROR=1 fi if [ $PATH_ERROR = 1 ]; then echo "ERROR: one or more of the required binaries not found, exiting" exit 1 fi #9044791 end echo Checking if the remote hosts are reachable | tee -a $LOGFILE for host in $HOSTS do if [ $platform = "SunOS" ]; then $PING -s $host 5 5 elif [ $platform = "HP-UX" ]; then $PING $host -n 5 -m 5 else $PING -c 5 -w 5 $host fi exitcode=`echo $?` if [ $exitcode = 0 ] then alivehosts="$alivehosts $host" else deadhosts="$deadhosts $host" fi done if test -z "$deadhosts" then echo Remote host reachability check succeeded. | tee -a $LOGFILE echo The following hosts are reachable: $alivehosts. | tee -a $LOGFILE echo The following hosts are not reachable: $deadhosts. | tee -a $LOGFILE echo All hosts are reachable. Proceeding further... | tee -a $LOGFILE else echo Remote host reachability check failed. | tee -a $LOGFILE echo The following hosts are reachable: $alivehosts. | tee -a $LOGFILE echo The following hosts are not reachable: $deadhosts. | tee -a $LOGFILE echo Please ensure that all the hosts are up and re-run the script. | tee -a $LOGFILE echo Exiting now... | tee -a $LOGFILE exit 1 fi firsthost=`echo $HOSTS | awk '{print $1}; END { }'` echo firsthost $firsthost numhosts=`echo $HOSTS | awk '{ }; END {print NF}'` echo numhosts $numhosts if [ $VERIFY = "true" ] then echo Since user has specified -verify option, SSH setup would not be done. Only, existing SSH setup would be verified. | tee -a $LOGFILE continue else echo The script will setup SSH connectivity from the host ''`hostname`'' to all | tee -a $LOGFILE echo the remote hosts. After the script is executed, the user can use SSH to run | tee -a $LOGFILE echo commands on the remote hosts or copy files between this host ''`hostname`'' | tee -a $LOGFILE echo and the remote hosts without being prompted for passwords or confirmations. | tee -a $LOGFILE echo | tee -a $LOGFILE echo NOTE 1: | tee -a $LOGFILE echo As part of the setup procedure, this script will use 'ssh' and 'scp' to copy | tee -a $LOGFILE echo files between the local host and the remote hosts. Since the script does not | tee -a $LOGFILE echo store passwords, you may be prompted for the passwords during the execution of | tee -a $LOGFILE echo the script whenever 'ssh' or 'scp' is invoked. | tee -a $LOGFILE echo | tee -a $LOGFILE echo NOTE 2: | tee -a $LOGFILE echo "AS PER SSH REQUIREMENTS, THIS SCRIPT WILL SECURE THE USER HOME DIRECTORY" | tee -a $LOGFILE echo AND THE .ssh DIRECTORY BY REVOKING GROUP AND WORLD WRITE PRIVILEGES TO THESE | tee -a $LOGFILE echo "directories." | tee -a $LOGFILE echo | tee -a $LOGFILE echo "Do you want to continue and let the script make the above mentioned changes (yes/no)?" | tee -a $LOGFILE if [ "$CONFIRM" = "no" ] then read CONFIRM else echo "Confirmation provided on the command line" | tee -a $LOGFILE fi echo | tee -a $LOGFILE echo The user chose ''$CONFIRM'' | tee -a $LOGFILE if [ -z "$CONFIRM" -o "$CONFIRM" != "yes" -a "$CONFIRM" != "no" ] then echo "You haven't specified proper input. Please enter 'yes' or 'no'. Exiting...." exit 0 fi if [ "$CONFIRM" = "no" ] then echo "SSH setup is not done." | tee -a $LOGFILE exit 1 else if [ $NO_PROMPT_PASSPHRASE = "yes" ] then echo "User chose to skip passphrase related questions." | tee -a $LOGFILE else if [ $SHARED = "true" ] then hostcount=`expr ${numhosts} + 1` PASSPHRASE_PROMPT=`expr 2 \* $hostcount` else PASSPHRASE_PROMPT=`expr 2 \* ${numhosts}` fi echo "Please specify if you want to specify a passphrase for the private key this script will create for the local host. Passphrase is used to encrypt the private key and makes SSH much more secure. Type 'yes' or 'no' and then press enter. In case you press 'yes', you would need to enter the passphrase whenever the script executes ssh or scp. $PASSPHRASE " | tee -a $LOGFILE echo "The estimated number of times the user would be prompted for a passphrase is $PASSPHRASE_PROMPT. In addition, if the private-public files are also newly created, the user would have to specify the passphrase on one additional occasion. " | tee -a $LOGFILE echo "Enter 'yes' or 'no'." | tee -a $LOGFILE if [ "$PASSPHRASE" = "no" ] then read PASSPHRASE else echo "Confirmation provided on the command line" | tee -a $LOGFILE fi echo | tee -a $LOGFILE echo The user chose ''$PASSPHRASE'' | tee -a $LOGFILE if [ -z "$PASSPHRASE" -o "$PASSPHRASE" != "yes" -a "$PASSPHRASE" != "no" ] then echo "You haven't specified whether to use Passphrase or not. Please specify 'yes' or 'no'. Exiting..." exit 0 fi if [ "$PASSPHRASE" = "yes" ] then RERUN_SSHKEYGEN="yes" #Checking for existence of ${IDENTITY} file if test -f $HOME/.ssh/${IDENTITY}.pub && test -f $HOME/.ssh/${IDENTITY} then echo "The files containing the client public and private keys already exist on the local host. The current private key may or may not have a passphrase associated with it. In case you remember the passphrase and do not want to re-run ssh-keygen, press 'no' and enter. If you press 'no', the script will not attempt to create any new public/private key pairs. If you press 'yes', the script will remove the old private/public key files existing and create new ones prompting the user to enter the passphrase. If you enter 'yes', any previous SSH user setups would be reset. If you press 'change', the script will associate a new passphrase with the old keys." | tee -a $LOGFILE echo "Press 'yes', 'no' or 'change'" | tee -a $LOGFILE read RERUN_SSHKEYGEN echo The user chose ''$RERUN_SSHKEYGEN'' | tee -a $LOGFILE if [ -z "$RERUN_SSHKEYGEN" -o "$RERUN_SSHKEYGEN" != "yes" -a "$RERUN_SSHKEYGEN" != "no" -a "$RERUN_SSHKEYGEN" != "change" ] then echo "You haven't specified whether to re-run 'ssh-keygen' or not. Please enter 'yes' , 'no' or 'change'. Exiting..." exit 0; fi fi else if test -f $HOME/.ssh/${IDENTITY}.pub && test -f $HOME/.ssh/${IDENTITY} then echo "The files containing the client public and private keys already exist on the local host. The current private key may have a passphrase associated with it. In case you find using passphrase inconvenient(although it is more secure), you can change to it empty through this script. Press 'change' if you want the script to change the passphrase for you. Press 'no' if you want to use your old passphrase, if you had one." read RERUN_SSHKEYGEN echo The user chose ''$RERUN_SSHKEYGEN'' | tee -a $LOGFILE if [ -z "$RERUN_SSHKEYGEN" -o "$RERUN_SSHKEYGEN" != "yes" -a "$RERUN_SSHKEYGEN" != "no" -a "$RERUN_SSHKEYGEN" != "change" ] then echo "You haven't specified whether to re-run 'ssh-keygen' or not. Please enter 'yes' , 'no' or 'change'. Exiting..." exit 0 fi fi fi fi echo Creating .ssh directory on local host, if not present already | tee -a $LOGFILE mkdir -p $HOME/.ssh | tee -a $LOGFILE echo Creating authorized_keys file on local host | tee -a $LOGFILE touch $HOME/.ssh/authorized_keys | tee -a $LOGFILE echo Changing permissions on authorized_keys to 644 on local host | tee -a $LOGFILE chmod 644 $HOME/.ssh/authorized_keys | tee -a $LOGFILE mv -f $HOME/.ssh/authorized_keys $HOME/.ssh/authorized_keys.tmp | tee -a $LOGFILE echo Creating known_hosts file on local host | tee -a $LOGFILE touch $HOME/.ssh/known_hosts | tee -a $LOGFILE echo Changing permissions on known_hosts to 644 on local host | tee -a $LOGFILE chmod 644 $HOME/.ssh/known_hosts | tee -a $LOGFILE mv -f $HOME/.ssh/known_hosts $HOME/.ssh/known_hosts.tmp | tee -a $LOGFILE echo Creating config file on local host | tee -a $LOGFILE echo If a config file exists already at $HOME/.ssh/config, it would be backed up to $HOME/.ssh/config.backup. echo "Host *" > $HOME/.ssh/config.tmp | tee -a $LOGFILE echo "ForwardX11 no" >> $HOME/.ssh/config.tmp | tee -a $LOGFILE if test -f $HOME/.ssh/config then cp -f $HOME/.ssh/config $HOME/.ssh/config.backup fi mv -f $HOME/.ssh/config.tmp $HOME/.ssh/config | tee -a $LOGFILE chmod 600 $HOME/.ssh/config if [ "$RERUN_SSHKEYGEN" = "yes" ] then echo Removing old private/public keys on local host | tee -a $LOGFILE rm -f $HOME/.ssh/${IDENTITY} | tee -a $LOGFILE rm -f $HOME/.ssh/${IDENTITY}.pub | tee -a $LOGFILE echo Running SSH keygen on local host | tee -a $LOGFILE $SSH_KEYGEN -t $ENCR -b $BITS -f $HOME/.ssh/${IDENTITY} | tee -a $LOGFILE elif [ "$RERUN_SSHKEYGEN" = "change" ] then echo Running SSH Keygen on local host to change the passphrase associated with the existing private key | tee -a $LOGFILE $SSH_KEYGEN -p -t $ENCR -b $BITS -f $HOME/.ssh/${IDENTITY} | tee -a $LOGFILE elif test -f $HOME/.ssh/${IDENTITY}.pub && test -f $HOME/.ssh/${IDENTITY} then continue else echo Removing old private/public keys on local host | tee -a $LOGFILE rm -f $HOME/.ssh/${IDENTITY} | tee -a $LOGFILE rm -f $HOME/.ssh/${IDENTITY}.pub | tee -a $LOGFILE echo Running SSH keygen on local host with empty passphrase | tee -a $LOGFILE $SSH_KEYGEN -t $ENCR -b $BITS -f $HOME/.ssh/${IDENTITY} -N '' | tee -a $LOGFILE fi if [ $SHARED = "true" ] then if [ $USER = $USR ] then #No remote operations required echo Remote user is same as local user | tee -a $LOGFILE REMOTEHOSTS="" chmod og-w $HOME $HOME/.ssh | tee -a $LOGFILE else REMOTEHOSTS="${firsthost}" fi else REMOTEHOSTS="$HOSTS" fi for host in $REMOTEHOSTS do echo Creating .ssh directory and setting permissions on remote host $host | tee -a $LOGFILE echo "THE SCRIPT WOULD ALSO BE REVOKING WRITE PERMISSIONS FOR "group" AND "others" ON THE HOME DIRECTORY FOR $USR. THIS IS AN SSH REQUIREMENT." | tee -a $LOGFILE echo The script would create ~$USR/.ssh/config file on remote host $host. If a config file exists already at ~$USR/.ssh/config, it would be backed up to ~$USR/.ssh/config.backup. | tee -a $LOGFILE echo The user may be prompted for a password here since the script would be running SSH on host $host. | tee -a $LOGFILE $SSH -o StrictHostKeyChecking=no -x -l $USR $host "/bin/sh -c \" mkdir -p .ssh ; chmod og-w . .ssh; touch .ssh/authorized_keys .ssh/known_hosts; chmod 644 .ssh/authorized_keys .ssh/known_hosts; cp .ssh/authorized_keys .ssh/authorized_keys.tmp ; cp .ssh/known_hosts .ssh/known_hosts.tmp; echo \\"Host *\\" > .ssh/config.tmp; echo \\"ForwardX11 no\\" >> .ssh/config.tmp; if test -f .ssh/config ; then cp -f .ssh/config .ssh/config.backup; fi ; mv -f .ssh/config.tmp .ssh/config ; chmod 600 .ssh/config \"" | tee -a $LOGFILE echo Done with creating .ssh directory and setting permissions on remote host $host. | tee -a $LOGFILE done for host in $REMOTEHOSTS do echo Copying local host public key to the remote host $host | tee -a $LOGFILE echo The user may be prompted for a password or passphrase here since the script would be using SCP for host $host. | tee -a $LOGFILE $SCP $HOME/.ssh/${IDENTITY}.pub $USR@$host:.ssh/authorized_keys | tee -a $LOGFILE echo Done copying local host public key to the remote host $host | tee -a $LOGFILE done cat $HOME/.ssh/${IDENTITY}.pub >> $HOME/.ssh/authorized_keys | tee -a $LOGFILE for host in $HOSTS do if [ "$ADVANCED" = "true" ] then echo Creating keys on remote host $host if they do not exist already. This is required to setup SSH on host $host. | tee -a $LOGFILE if [ "$SHARED" = "true" ] then IDENTITY_FILE_NAME=${IDENTITY}_$host COALESCE_IDENTITY_FILES_COMMAND="cat .ssh/${IDENTITY_FILE_NAME}.pub >> .ssh/authorized_keys" else IDENTITY_FILE_NAME=${IDENTITY} fi $SSH -o StrictHostKeyChecking=no -x -l $USR $host " /bin/sh -c \"if test -f .ssh/${IDENTITY_FILE_NAME}.pub && test -f .ssh/${IDENTITY_FILE_NAME}; then echo; else rm -f .ssh/${IDENTITY_FILE_NAME} ; rm -f .ssh/${IDENTITY_FILE_NAME}.pub ; $SSH_KEYGEN -t $ENCR -b $BITS -f .ssh/${IDENTITY_FILE_NAME} -N '' ; fi; ${COALESCE_IDENTITY_FILES_COMMAND} \"" | tee -a $LOGFILE else #At least get the host keys from all hosts for shared case - advanced option not set if test $SHARED = "true" && test $ADVANCED = "false" then if [ "$PASSPHRASE" = "yes" ] then echo "The script will fetch the host keys from all hosts. The user may be prompted for a passphrase here in case the private key has been encrypted with a passphrase." | tee -a $LOGFILE fi $SSH -o StrictHostKeyChecking=no -x -l $USR $host "/bin/sh -c true" fi fi done for host in $REMOTEHOSTS do if test $ADVANCED = "true" && test $SHARED = "false" then $SCP $USR@$host:.ssh/${IDENTITY}.pub $HOME/.ssh/${IDENTITY}.pub.$host | tee -a $LOGFILE cat $HOME/.ssh/${IDENTITY}.pub.$host >> $HOME/.ssh/authorized_keys | tee -a $LOGFILE rm -f $HOME/.ssh/${IDENTITY}.pub.$host | tee -a $LOGFILE fi done for host in $REMOTEHOSTS do if [ "$ADVANCED" = "true" ] then if [ "$SHARED" != "true" ] then echo Updating authorized_keys file on remote host $host | tee -a $LOGFILE $SCP $HOME/.ssh/authorized_keys $USR@$host:.ssh/authorized_keys | tee -a $LOGFILE fi echo Updating known_hosts file on remote host $host | tee -a $LOGFILE $SCP $HOME/.ssh/known_hosts $USR@$host:.ssh/known_hosts | tee -a $LOGFILE fi if [ "$PASSPHRASE" = "yes" ] then echo "The script will run SSH on the remote machine $host. The user may be prompted for a passphrase here in case the private key has been encrypted with a passphrase." | tee -a $LOGFILE fi $SSH -x -l $USR $host "/bin/sh -c \"cat .ssh/authorized_keys.tmp >> .ssh/authorized_keys; cat .ssh/known_hosts.tmp >> .ssh/known_hosts; rm -f .ssh/known_hosts.tmp .ssh/authorized_keys.tmp\"" | tee -a $LOGFILE done cat $HOME/.ssh/known_hosts.tmp >> $HOME/.ssh/known_hosts | tee -a $LOGFILE cat $HOME/.ssh/authorized_keys.tmp >> $HOME/.ssh/authorized_keys | tee -a $LOGFILE #Added chmod to fix BUG NO 5238814 chmod 644 $HOME/.ssh/authorized_keys #Fix for BUG NO 5157782 chmod 600 $HOME/.ssh/config rm -f $HOME/.ssh/known_hosts.tmp $HOME/.ssh/authorized_keys.tmp | tee -a $LOGFILE echo SSH setup is complete. | tee -a $LOGFILE fi fi echo | tee -a $LOGFILE echo ------------------------------------------------------------------------ | tee -a $LOGFILE echo Verifying SSH setup | tee -a $LOGFILE echo =================== | tee -a $LOGFILE echo The script will now run the 'date' command on the remote nodes using ssh | tee -a $LOGFILE echo to verify if ssh is setup correctly. IF THE SETUP IS CORRECTLY SETUP, | tee -a $LOGFILE echo THERE SHOULD BE NO OUTPUT OTHER THAN THE DATE AND SSH SHOULD NOT ASK FOR | tee -a $LOGFILE echo PASSWORDS. If you see any output other than date or are prompted for the | tee -a $LOGFILE echo password, ssh is not setup correctly and you will need to resolve the | tee -a $LOGFILE echo issue and set up ssh again. | tee -a $LOGFILE echo The possible causes for failure could be: | tee -a $LOGFILE echo 1. The server settings in /etc/ssh/sshd_config file do not allow ssh | tee -a $LOGFILE echo for user $USR. | tee -a $LOGFILE echo 2. The server may have disabled public key based authentication. echo 3. The client public key on the server may be outdated. echo 4. ~$USR or ~$USR/.ssh on the remote host may not be owned by $USR. | tee -a $LOGFILE echo 5. User may not have passed -shared option for shared remote users or | tee -a $LOGFILE echo may be passing the -shared option for non-shared remote users. | tee -a $LOGFILE echo 6. If there is output in addition to the date, but no password is asked, | tee -a $LOGFILE echo it may be a security alert shown as part of company policy. Append the | tee -a $LOGFILE echo ------------------------------------------------------------------------ | tee -a $LOGFILE #read -t 30 dummy for host in $HOSTS do echo --$host:-- | tee -a $LOGFILE echo Running $SSH -x -l $USR $host date to verify SSH connectivity has been setup from local host to $host. | tee -a $LOGFILE echo "IF YOU SEE ANY OTHER OUTPUT BESIDES THE OUTPUT OF THE DATE COMMAND OR IF YOU ARE PROMPTED FOR A PASSWORD HERE, IT MEANS SSH SETUP HAS NOT BEEN SUCCESSFUL. Please note that being prompted for a passphrase may be OK but being prompted for a password is ERROR." | tee -a $LOGFILE if [ "$PASSPHRASE" = "yes" ] then echo "The script will run SSH on the remote machine $host. The user may be prompted for a passphrase here in case the private key has been encrypted with a passphrase." | tee -a $LOGFILE fi $SSH -l $USR $host "/bin/sh -c date" | tee -a $LOGFILE echo ------------------------------------------------------------------------ | tee -a $LOGFILE done if [ "$EXHAUSTIVE_VERIFY" = "true" ] then for clienthost in $HOSTS do if [ "$SHARED" = "true" ] then REMOTESSH="$SSH -i .ssh/${IDENTITY}_${clienthost}" else REMOTESSH=$SSH fi for serverhost in $HOSTS do echo ------------------------------------------------------------------------ | tee -a $LOGFILE echo Verifying SSH connectivity has been setup from $clienthost to $serverhost | tee -a $LOGFILE echo ------------------------------------------------------------------------ | tee -a $LOGFILE echo "IF YOU SEE ANY OTHER OUTPUT BESIDES THE OUTPUT OF THE DATE COMMAND OR IF YOU ARE PROMPTED FOR A PASSWORD HERE, IT MEANS SSH SETUP HAS NOT BEEN SUCCESSFUL." | tee -a $LOGFILE $SSH -l $USR $clienthost "$REMOTESSH $serverhost \"/bin/sh -c date\"" | tee -a $LOGFILE echo ------------------------------------------------------------------------ | tee -a $LOGFILE done echo -Verification from $clienthost complete- | tee -a $LOGFILE done else if [ "$ADVANCED" = "true" ] then if [ "$SHARED" = "true" ] then REMOTESSH="$SSH -i .ssh/${IDENTITY}_${firsthost}" else REMOTESSH=$SSH fi for host in $HOSTS do echo ------------------------------------------------------------------------ | tee -a $LOGFILE echo Verifying SSH connectivity has been setup from $firsthost to $host | tee -a $LOGFILE echo "IF YOU SEE ANY OTHER OUTPUT BESIDES THE OUTPUT OF THE DATE COMMAND OR IF YOU ARE PROMPTED FOR A PASSWORD HERE, IT MEANS SSH SETUP HAS NOT BEEN SUCCESSFUL." | tee -a $LOGFILE $SSH -l $USR $firsthost "$REMOTESSH $host \"/bin/sh -c date\"" | tee -a $LOGFILE echo ------------------------------------------------------------------------ | tee -a $LOGFILE done echo -Verification from $clienthost complete- | tee -a $LOGFILE fi fi echo "SSH verification complete." | tee -a $LOGFILE EOF |
脚本sshUserSetup2.sh内容
主要完成普通用户到普通用户切换的互信以及修复脚本sshUserSetup.sh完成后可能配置错误的互信。
本人提供Oracle(OCP、OCM)、MySQL(OCP)、PostgreSQL(PGCA、PGCE、PGCM)等数据库的培训和考证业务，私聊QQ646634621或微信dbaup66，谢谢！
