How to use SSH without password in Oracle RAC
During the Clusterware (CRS) and RAC Database installations, Oracle Universal Installer (OUI) must be able to OracleAutomatically replicates the software to all RAC nodes. Here we configure SSH to allow Oracle users to access without entering a passwordThe ability of each node.First, ping between two nodes, make sure it's all through.[Root@node1 ~]# Ping 192.168.100.102[Root@node1 ~]# Ping 10.10.17.222
to establish user equivalence, the user's public
command is run at a different terminal with a second-datadir, and the node runs on a different port.
start the console. Create an initial Coinbase account for each node
When you run the console with the command above, you want to create the primary Coinbase account. If you're curious, use the passphrase "passphrase" and the node application will use "passphrase
case where the first Geth node is running, the same command is run at a different terminal with a second-datadir, and the node runs on a different port.
Start the console. Create an initial Coinbase account for each node
When you run the console with the command above, you want to create the primary Coinbase account. If you're curious, use the passphrase "passphrase" and the node application will use "
PGDB1172.16.3.228 PGDB2[Email protected] ~]#2.sshMaster[Email protected] ~]# Su-postgresLast Login:mon Sep 4 10:32:25 CST on pts/0-bash-4.2$-bash-4.2$-bash-4.2$ ssh-keygen-t RSAGenerating public/private RSA key pair.Enter file in which to save the key (/VAR/LIB/PGSQL/.SSH/ID_RSA):Created directory '/var/lib/pgsql/.ssh '.Enter passphrase (empty for no passphrase):Enter same
SSH key.GitHub is the private key and Github.pub is the public key.Generating a new SSH key(1) Open Terminal.(2) Paste the text below, substituting in your GitHub email address.ssh-keygen -t rsa -b 4096 -C "[emailprotected]"# Creates a new ssh key, using the provided email as a label**Generating public/private rsa key pair.**(3) When you ' re prompted to "enter a file in which to save the key," press ENTER. This accepts the default file location.Enter a file in which to save the key (/Users/you
Only operations on one machine are listed. From rac01-ud-us-eqx to rac02-ud-us-eqx and rac03-ud-us-eqxbash-3.00 $ ssh10.12.32.182Theauthenticityofhost amp; #39; 10.12.32.182 (10.12.32.182) amp; #39; can amp ;#
Only operations on one machine are listed. From rac01-ud-us-eqx to rac02-ud-us-eqx and rac03-ud-us-eqx
Bash-3.00 $ ssh 10.12.32.182
The authenticity of host '10. 12.32.182 (10.12.32.182) 'can't be established.
RSA key fingerprint is 7e: 8d: db: aa: 7c: 15: 3e: b6: 4e: 5f: 86: 58: b5: e
, try deleting the environment variable home and try again.3. How to start the OpenSSH serviceA Start on command Consolenet start sshdnet stop sshdB Start on the Cygwin consoleCygwin--start sshdCygwin--stop sshd4. Configure user password (deprecated, not recommended)InputSsh-user-configQuery:shall I Create a SSH2 DSA identity file for? (yes/no) Yes* * Query:shall I Create a SSH2 ECDSA identity file for? (yes/no) YesThe above 2 questions choose Yes, there is a ssh1 do not create.Note The password
Recently, I have been studying how to automatically log on to linux servers. This article describes how to automatically log on to the ssh key.Update:. After finishing this article last night, I found a complete description of ssh authentication. Sad.
Conjecture: the generation of linux keys is not related to the server, but only to the encryption method (using rsa or dsa) and passphrase (password phrase, entered when the key is generated.In this case
above? Open the terminal and process the above certificate as follows,
Cd to enter the certificate directory
Convert the. cer file to a. pem file:
$ Openssl x509-in aps_developer_identity.cer-inform der
-Out PushChatCert. pem
Convert the private key Push. p12 file to the. pem file:
$ Openssl pkcs12-nocerts-out PushChatKey. pem-in Push. p12
Enter Import Password:
MAC verified OK
Enter PEM pass phrase:
Verifying-Enter PEM pass phrase:
First, enter the passp
line and press enter to install the SDK.
If homebrew is installed on your Mac, enter brew install git to install it.
Linux platform
Most Linux distributions have pre-compiled Git Binary packages, which can be directly installed through the Package Manager. Select the following command for installation Based on the release version you are using.
Debian/Ubuntu apt-get install git> if you use Ubuntu 10.04, Debian 5.0 (lenny), or an older version, use the apt-get install git-core Command for insta
improved, and after some settings, you can also achieve the effect of automatic login for certificate authentication.First, modify the sshd_config file to enable the certificate authentication option:Rsaauthentication Yes pubkeyauthentication Yes authorizedkeysfile % H/. Ssh/authorized_keys after modification is completed, restart the SSH service.Next, we need to create a private key and a public key for the SSH user. First, you need to log on to the account that requires key establishment. Her
confidential information to be transmitted online. Version 1 of the SSH protocol uses the RSA key, while the DSA key is used for protocol level 2, which is the latest version of the SSH protocolSsh-keygen prompts for a passphrase ( entered is not a password for the system account on the remote server ), and after entering the passphrase, Ssh-keygen encrypts the private key with this
Download: http://code.google.com/p/git-osx-installer/
Download the latest PGK file.
Graphical openingitgui:
Bytes.
When using SSH links on GitHub, you need to set up SSH
1. Check the SSH key
Cd ~ /. SSH
2. Back up the existing key (if any)
Mkdir key_backup
MV id_rsa * key_backup
3. generate an SSH key
$ Ssh-keygen-t rsa-C jiang.bo.hit@gmail.com
Generating public/private RSA key pair.
Enter file in which to save the key (/users/jiangbo/. Ssh/id_rsa ):
Enter
generated key, until the progress bar ends. The result is: Enter the key passphrase and confirm passphrase, similar to the private key password, and click "Save private key ". The public key information must be copied to a specific file in the ubuntu System in the preceding text box. You can see that the private key contains the public key and private key. 4.2.2 modify openssh configuration in ubuntu syste
same ownership as the login username. "strictmodes" sets whether SSH checks the permission and ownership of the user's home directory and rhosts file before receiving the login request. This is usually necessary because new users often set their directories and files to write permissions for anyone .)
Then restart the SSH service:/etc/init. d/ssh restart
Generate the login public key and private key,[Root @ usousou192_168_0_21 SSH] # ssh-keygen-T RSAGenerating public/private RSA key pair.Enter
Value > Property > Configuration >
3. Password-free SSH settings
During hadoop running, you need to use SSH to manage the remote hadoop daemon. You do not need to enter a password to access the hadoop daemon. Therefore, use a key for verification.
1) generate the key and execute the following command:
[Root @ localhost ~] # Ssh-keygen-T RSA
If you are prompted to enter passphrase (empty for no
Cocould not load host key:/etc/ssh/ssh_host_rsa_key
Unable to start
SSH
A solution
Symptom:
#/Usr/sbin/sshd
System prompt"Cocould not load host key:/etc/ssh/ssh_host_key
Cocould not load host key:/etc/ssh/ssh_host_rsa_key
Cocould not load host key:/etc/ssh/ssh_host_dsa_key
Disabling Protocol Version 1. cocould not load host key
Disabling Protocol version 2. cocould not load host key
Sshd: No hostkeys available-exiting"
The general meaning is thatKeyOr something.
The solution is as follows::
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