From 4b988ce3c598c8b59bd0ce77ab7854291c66549f Mon Sep 17 00:00:00 2001 From: Chetan Risbud Date: Mon, 23 Dec 2013 15:46:22 +0530 Subject: Initial import of the swiftkerbauth Imported code till commit f64a3354185f32928e2568d9ece4a52fa4746c05 Changed a code bit to import correct definitions. kerbauth unit tests do run along with gluster-swift. Install script does install swiftkerbauth. import swiftkerbauth from http://review.gluster.org/swiftkrbauth.git Change-Id: Ia89f2b77cc68df10dee2f41ce074f3381ac3c408 Signed-off-by: Chetan Risbud Reviewed-on: http://review.gluster.org/6597 Reviewed-by: Prashanth Pai Reviewed-by: Luis Pabon Tested-by: Luis Pabon --- doc/markdown/auth_guide.md | 22 +- doc/markdown/swiftkerbauth/AD_client.md | 206 ++++++++++ doc/markdown/swiftkerbauth/AD_server.md | 107 ++++++ doc/markdown/swiftkerbauth/architecture.md | 105 ++++++ doc/markdown/swiftkerbauth/ipa_client.md | 80 ++++ doc/markdown/swiftkerbauth/ipa_server.md | 134 +++++++ doc/markdown/swiftkerbauth/swiftkerbauth_guide.md | 435 ++++++++++++++++++++++ 7 files changed, 1083 insertions(+), 6 deletions(-) create mode 100644 doc/markdown/swiftkerbauth/AD_client.md create mode 100644 doc/markdown/swiftkerbauth/AD_server.md create mode 100644 doc/markdown/swiftkerbauth/architecture.md create mode 100644 doc/markdown/swiftkerbauth/ipa_client.md create mode 100644 doc/markdown/swiftkerbauth/ipa_server.md create mode 100644 doc/markdown/swiftkerbauth/swiftkerbauth_guide.md (limited to 'doc') diff --git a/doc/markdown/auth_guide.md b/doc/markdown/auth_guide.md index 4d38dfa..8e222e3 100644 --- a/doc/markdown/auth_guide.md +++ b/doc/markdown/auth_guide.md @@ -2,24 +2,25 @@ ## Contents * [Keystone](#keystone) -* [Swiftkerbauth](#swiftkerbauth) * [GSwauth](#gswauth) * [Overview](#gswauth_overview) * [Installing GSwauth](#gswauth_install) * [User roles](#gswauth_user_roles) * [GSwauth Tools](#gswauth_tools) * [Authenticating a user](#gswauth_authenticate) +* [Swiftkerbauth](#swiftkerbauth) + * [Architecture](swiftkerbauth/architecture.md) + * [RHEL IPA Server Guide](swiftkerbauth/ipa_server.md) + * [RHEL IPA Client Guide](swiftkerbauth/ipa_client.md) + * [Windows AD Server Guide](swiftkerbauth/AD_server.md) + * [Windows AD Client Guide](swiftkerbauth/AD_client.md) + * [Swiftkerbauth Guide](swiftkerbauth/swiftkerbauth_guide.md) ## Keystone ## The Standard Openstack authentication service TBD -## Swiftkerbauth ## -Kerberos authentication filter for Swift - -TBD - ## GSwauth ## ### Overview ### @@ -278,3 +279,12 @@ bash-4.2$ bash-4.2$ swift --os-auth-token=AUTH_tk7e68ef4698f14c7f95af07ab7b298610 --os-storage-url=http://127.0.0.1:8080/v1/AUTH_test list container1 README.md ~~~ + +## Swiftkerbauth ## +Kerberos authentication filter + +Carsten Clasohm implemented a new authentication filter for swift +that uses Kerberos tickets for single sign on authentication, and +grants administrator permissions based on the users group membership +in a directory service like Red Hat Enterprise Linux Identity Management +or Microsoft Active Directory. diff --git a/doc/markdown/swiftkerbauth/AD_client.md b/doc/markdown/swiftkerbauth/AD_client.md new file mode 100644 index 0000000..0947a1e --- /dev/null +++ b/doc/markdown/swiftkerbauth/AD_client.md @@ -0,0 +1,206 @@ +#AD client setup guide + +###Contents +* [Setup Overview] (#setup) +* [Configure Network] (#network) +* [Installing AD Client] (#AD-client) + + +###Setup Overview + +This guide talks about adding fedora linux client to windows domain. +The test setup included a client machine with Fedora 19 installed +on it with all the latest packages updated. The crux is to add this linux +machine to Windows Domain. This linux box is expected to act as RHS node and on which swiftkerbauth, +apachekerbauth code would run. + +Set hostname (FQDN) to fcclient.winad.com + + # hostnamectl set-hostname "fcclient.winad.com" + + # hostname "fcclient.winad.com" + + + +### Configure client + +* Deploy Fedora linux 19. + +* Update the system with latest packages. + +* Configure SELinux security parameters. + +* Install & configure samba + +* Configure DNS + +* Synchronize the time services + +* Join Domain + +* Install / Configure Kerberos Client + + +The document assumes the installing Fedora Linux and configuring SELinux +parameters to 'permissive' is known already. + +###Install & Configure Samba: + # yum -y install samba samba-client samba-common samba-winbind + samba-winbind-clients + + # service start smb + + # ps -aef | grep smb + # chkconfig smb on + +###Synchronize time services +The kerberos authentication and most of the DNS functionality could fail with +clock skew if times are not synchronized. + + # cat /etc/ntp.conf + server ns1.bos.redhat.com + server 10.5.26.10 + + # service ntpd stop + + # ntpdate 10.16.255.2 + + # service ntpd start + + #chkconfig ntpd on + +Check if Windows server in the whole environment is also time synchronized with +same source. + + # C:\Users\Administrator>w32tm /query /status | find "Source" + + Source: ns1.xxx.xxx.com + +###Configure DNS on client +Improperly resolved hostname is the leading cause in authentication failures. +Best practice is to configure fedora client to use Windows DNS. +'nameserver' below is the IP address of the windows server. + # cat /etc/resolve.conf + domain server.winad.com + search server.winad.com + nameserver 10.nn.nnn.3 + +###Set the hostname of the client properly (FQDN) + # cat /etc/sysconfig/network + HOSTNAME=fcclient.winad.com + + +###Install & Configure kerberos client + + # yum -y install krb5-workstation + +Edit the /etc/krb5.conf as follows: + + # cat /etc/krb5.conf + [logging] + default = FILE:/var/log/krb5libs.log + kdc = FILE:/var/log/krb5kdc.log + admin_server = FILE:/var/log/kadmind.log + + [libdefaults] + default_realm = WINAD.COM + dns_lookup_realm = false + dns_lookup_kdc = false + ticket_lifetime = 24h + renew_lifetime = 7d + forwardable = true + + [realms] + WINAD.COM = { + kdc = server.winad.com + admin_server = server.winad.com + } + [domain_realm] + .demo = server.winad.com + demo = server.winad.com + +###Join Domain +Fire command 'system-config-authentication' on client. This should display a +graphical wizard. Below inputs would help configure this wizard. + + - User account data base = winbind + - winbind domain = winad + - security model = ads + - winbind ads realm = winad.com + - winbind controller = server.winad.com + - template shell = /bin/bash + - let the other options be as is to default. + - Perform Join domain and appy settings and quit. Please note this join should + not see any errors. This makes the client fedora box to join the windows + domain. + +###Configure the kerberos client +This would bring the users/groups from Windows Active directory to this +fedora client. + +Edit /etc/samba/smb.conf file to have below parameters in the global section. + + # cat /etc/samba/smb.conf + [global] + workgroup = winad + realm = winad.com + server string = Samba Server Version %v + security = ADS + allow trusted domains = No + password server = server.winad.com + log file = /var/log/samba/log.%m + max log size = 50 + idmap uid = 10000­19999 + idmap gid = 10000­19999 + template shell = /bin/bash + winbind separator = + + winbind use default domain = Yes + idmap config REFARCH­AD:range = 10000000­19999999 + idmap config REFARCH­AD:backend = rid + cups options = raw + + + # service smb stop + + # service winbind stop + + # tar -cvf /var/tmp/samba-cache-backup.tar /var/lib/samba + + # ls -la /var/tmp/samba-cache-backup.tar + + # rm ­-f /var/lib/samba/* + + +Verify that no kerberos ticket available and cached. + + # kdestroy + + # klist + +Rejoin the domain. + + # net join -S server -U Administrstor + +Test that client rejoined the domain. + + # net ads info + +Restart smb and winbind service. + + # wbinfo --domain-users + +Perform kinit for the domain users prepared on active directory. This is obtain +the kerberos ticket for user 'auth_admin' + + # kinit auth_admin + + # id -Gn auth_admin + +###Notes +Obtaining the HTTP service principal & keytab file and installing it with +swiftkerbauth is added to swiftkerbauth_guide + +###References +Reference Document for adding Linux box to windows domain : +Integrating Red Hat Enterprise Linux 6 +with Active Directory diff --git a/doc/markdown/swiftkerbauth/AD_server.md b/doc/markdown/swiftkerbauth/AD_server.md new file mode 100644 index 0000000..c34f0f1 --- /dev/null +++ b/doc/markdown/swiftkerbauth/AD_server.md @@ -0,0 +1,107 @@ +#Windows Active Directory & Domain Controller Server Guide + +###Contents +* [Setup Overview] (#Setup) +* [Installing Active Directory Services] (#AD-server) +* [Configuring DNS] (#DNS) +* [Adding Users and Groups] (#users-groups) + + + +###Setup Overview + +The setup includes a server machine installed with Windows 2008 R2 Server, with +Domain Controller, Active Directory services & DNS server installed alongwith. +The steps to install windows operating system and above servers can be found +on MicroSoft Documentation. This windows Active Directory server would act as an +authentication server in the whole setup. This would provide the access control +and permissions for users on certain data objects. + + +Windows 2008 R2 deployment: + +http://technet.microsoft.com/en-us/library/dd283085.aspx + + +Configuring Active Directory, Domain Services, DNS server: + +http://technet.microsoft.com/en-us/library/cc770946.aspx + + + +###Installing AD Server + +Administrators need to follow simple instructions in Server Manager on Windows +2008, and should add Active Directory Domain Services & DNS server. It is +recommended to use static IP for DNS server. Preferred Hostname(FQDN) for +Windows server could be of format hostname 'server.winad.com' where +'winad.com' is a domain name. + +Following tips would help prepare a test setup neatly. + + - Select Active Directory Domain services wizard in Server Manager + - Move on to install it with all the pre-requisits, e.g. .NET framework etc. + - Configure Active directory after installtion via exapanding the 'Roles' + section in the server manager. + - Create a new Domain in the New Forest. + - Type the FQDN, winad.com + - Set Forest functional level Windows 2008 R2. + - Selct additional options for this domain controller as DNS server. + - Leave the log locations to default provided by wizard. + - Set the Administrator Password carefully. + - Thats it. You are done configuring active directory. + + + +###Configuring DNS + +This section explains configuring the DNS server installed on Windows 2008 R2 +server. You must know know about + + - Forward lookup zone + + - Reverse lookup zone + + - Zone type + +A forward lookup zone is simply a way to resolve hostnames to IP address. +A reverse lookup zone is to lookup DNS hostname of the host IP. + +Following tips would help configure the Zones on DNS server. + + - Create a Forward lookup zone. + - Create it a primary zone. + - Add the Clients using their ip addresses and FQDN to this forward lookup + zones. + - This would add type 'A' record for that host on DNS server. + - Similarly create a Reverser lookup zone. + - Add clients 'PTR' record to this zone via browsing through the forward + zones clients. + +The above setup can be tested on client once it joins the domain using 'dig' +command as mentioned below. + + +On client: + + # dig fcclient.winad.com + This should yield you a Answer section mentioning its IP address. + + Reverse lookup can be tested using + + # 'dig -t ptr 101.56.168.192.in-addr.arpa.' + The answer section should state the FQDN of the client. + + Repeat the above steps on client for Windows AD server as well. + + + +###Adding users and groups + +Adding groups and users to the Windows domain is easy task. + + - Start -> Administrative Tools -> Active Directory Users & Computers + - Expand the domain name which was prepared earlier. e.g winad.com + - Add groups with appropreate access rights. + - Add users to the group with appropreate permissions. + - Make sure you set password for users prepared on AD server. diff --git a/doc/markdown/swiftkerbauth/architecture.md b/doc/markdown/swiftkerbauth/architecture.md new file mode 100644 index 0000000..fc6d764 --- /dev/null +++ b/doc/markdown/swiftkerbauth/architecture.md @@ -0,0 +1,105 @@ +# Architecture + +The Swift API is HTTP-based. As described in the Swift documentation +[1], clients first make a request to an authentication URL, providing +a username and password. The reply contains a token which is used in +all subsequent requests. + +Swift has a chain of filters through which all client requests go. The +filters to use are configured with the pipeline parameter in +/etc/swift/proxy-server.conf: + + [pipeline:main] + pipeline = healthcheck cache tempauth proxy-server + +For the single sign authentication, we added a new filter called +"kerbauth" and put it into the filter pipeline in place of tempauth. + +The filter checks the URL for each client request. If it matches the +authentication URL, the client is redirected to a URL on a different +server (on the same machine). The URL is handled by a CGI script, which +is set up to authenticate the client with Kerberos negotiation, retrieve +the user's system groups [2], store them in a memcache ring shared with +the Swift server, and return the authentication token to the client. + +When the client provides the token as part of a resource request, the +kerbauth filter checks it against its memcache, grants administrator +rights based on the group membership retrieved from memcache, and +either grants or denies the resource access. + +[1] http://docs.openstack.org/api/openstack-object-storage/1.0/content/authentication-object-dev-guide.html + +[2] The user data and system groups are usually provided by Red Hat + Enterprise Linux identity Management or Microsoft Active + Directory. The script relies on the system configuration to be set + accordingly (/etc/nsswitch.conf). + +***** + +## kerbauth.py + +The script kerbauth.py began as a copy of the tempauth.py script from +from tempauth middleware. It contains the following modifications, among +others: + +In the __init__ method, we read the ext_authentication_url parameter +from /etc/swift/proxy-server.conf. This is the URL that clients are +redirected to when they access either the Swift authentication URL, or +when they request a resource without a valid authentication token. + +The configuration in proxy-server.conf looks like this: + + [filter:kerbauth] + use = egg:swiftkerbauth#kerbauth + ext_authentication_url = http://client.rhelbox.com/cgi-bin/swift-auth + +The authorize method was changed so that global administrator rights +are granted if the user is a member of the auth_reseller_admin +group. Administrator rights for a specific account like vol1 are +granted if the user is a member of the auth_vol1 group. [3] + +The denied_response method was changed to return a HTTP redirect to +the external authentication URL if no valid token was provided by the +client. + +Most of the handle_get_token method was moved to the external +authentication script. This method now returns a HTTP redirect. + +In the __call__ and get_groups method, we removed support for the +HTTP_AUTHORIZATION header, which is only needed when Amazon S3 is +used. + +Like tempauth.py, kerbauth.py uses a Swift wrapper to access +memcache. This wrapper converts the key to an MD5 hash and uses the +hash value to determine on which of a pre-defined list of servers to +store the data. + +[3] "auth" is the default reseller prefix, and would be different if + the reseller_prefix parameter in proxy-server.conf was set. + +## swift-auth CGI script + +swift-auth resides on an Apache server and assumes that Apache is +configured to authenticate the user before this script is +executed. The script retrieves the username from the REMOTE_USER +environment variable, and checks if there already is a token for this +user in the memcache ring. If not, it generates a new one, retrieves +the user's system groups with "id -Gn USERNAME", stores this +information in the memcache ring, and returns the token to the client. + +To allow the CGI script to connect to memcache, the SELinux booleans +httpd_can_network_connect and httpd_can_network_memcache had to be +set. + +The tempauth filter uses the uuid module to generate token +strings. This module creates and runs temporary files, which leads to +AVC denial messages in /var/log/audit/audit.log when used from an +Apache CGI script. While the module still works, the audit log would +grow quickly. Instead of writing an SELinux policy module to allow or +to silently ignore these accesses, the swift-auth script uses the +"random" module for generating token strings. + +Red Hat Enterprise Linux 6 comes with Python 2.6 which only provides +method to list the locally defined user groups. To include groups from +Red Hat Enterprise Linux Identity Management and in the future from +Active Directory, the "id" command is run in a subprocess. diff --git a/doc/markdown/swiftkerbauth/ipa_client.md b/doc/markdown/swiftkerbauth/ipa_client.md new file mode 100644 index 0000000..f6afc42 --- /dev/null +++ b/doc/markdown/swiftkerbauth/ipa_client.md @@ -0,0 +1,80 @@ +#IPA Client Guide + +##Contents +* [Setup Overview] (#setup) +* [Configure Network] (#network) +* [Installing IPA Client] (#ipa-client) + + +##Setup Overview +We have used a F18 box as IPA client machine and used FreeIPA client. +This document borrows instructions from the following more detailed guide. +[RHEL 6 Identity Management Guide][] + + + +## Configure network + +Set hostname (FQDN) to client.rhelbox.com +> hostnamectl set-hostname "client.rhelbox.com" +> +> hostname "client.rhelbox.com" + +Add following to /etc/sysconfig/network: + + HOSTNAME=client.rhelbox.com + +Add the following to /etc/hostname + + client.rhelbox.com + +Add the following to /etc/hosts + + 192.168.56.110 server.rhelbox.com server + 192.168.56.101 client.rhelbox.com client + +Logout and login again and verify hostname : +> hostname --fqdn + +Edit */etc/resolv.conf* to add this at beginning of file + + nameserver 192.168.56.110 + +Warning: NetworkManager changes resolv.conf on restart + +Turn off firewall +> service iptables stop +> +> chkconfig iptables off + + +## Installing IPA Client + +Install IPA client packages: + +For RHEL: +> yum install ipa-client ipa-admintools + +For Fedora: +> yum install freeipa-client freeipa-admintools + +Install IPA client and add to domain: +>ipa-client-install --enable-dns-updates + + Discovery was successful! + Hostname: client.rhelbox.com + Realm: RHELBOX.COM + DNS Domain: rhelbox.com + IPA Server: server.rhelbox.com + BaseDN: dc=rhelbox,dc=com + + Continue to configure the system with these values? [no]: yes + User authorized to enroll computers: admin + +Check if client is configured correctly: +> kinit admin +> +> getent passwd admin + + +[RHEL 6 Identity Management Guide]: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Identity_Management_Guide/ diff --git a/doc/markdown/swiftkerbauth/ipa_server.md b/doc/markdown/swiftkerbauth/ipa_server.md new file mode 100644 index 0000000..ef12b53 --- /dev/null +++ b/doc/markdown/swiftkerbauth/ipa_server.md @@ -0,0 +1,134 @@ +#IPA Server Guide + +##Contents +* [Setup Overview] (#setup) +* [Configure Network] (#network) +* [Installing IPA Server] (#ipa-server) +* [Configuring DNS] (#dns) +* [Adding Users and Groups] (#users-groups) + + + +##Setup Overview +We have used a RHEL 6.4 box as IPA and DNS server. This document borrows +instructions from the following more detailed guide. +[RHEL 6 Identity Management Guide][] + + + +## Configure network + +Change hostname (FQDN) to server.rhelbox.com +> hostname "server.rhelbox.com" + +Add following to */etc/sysconfig/network* file + + HOSTNAME=server.rhelbox.com + +Add the following to */etc/hosts* file + + 192.168.56.110 server.rhelbox.com server + 192.168.56.101 client.rhelbox.com client + +Logout and login again and verify new hostname +> hostname --fqdn + +Turn off firewall +> service iptables stop +> +> chkconfig iptables off + + + +## Installing IPA Server + +Install IPA server packages and DNS dependencies +> yum install ipa-server bind bind-dyndb-ldap + +Run the following interactive setup to install IPA server with DNS +> ipa-server-install --setup-dns + + The IPA Master Server will be configured with: + Hostname: server.rhelbox.com + IP address: 192.168.56.110 + Domain name: rhelbox.com + Realm name: RHELBOX.COM + + BIND DNS server will be configured to serve IPA domain with: + Forwarders: No forwarders + Reverse zone: 56.168.192.in-addr.arpa. + +The installation may take some time. + +Check if IPA is installed correctly : +> kinit admin +> +> ipa user-find admin + + + +## Configuring DNS + +Edit */etc/resolv.conf* to add this at beginning of file : + + nameserver 192.168.56.110 + +Warning: NetworkManager changes resolv.conf on restart + +Add a DNS A record and PTR record for the client under rhelbox.com zone +> ipa dnsrecord-add rhelbox.com client --a-rec=192.168.56.101 --a-create-reverse + +Check if DNS resolution is working by running : + +> dig server.rhelbox.com + + ;; ANSWER SECTION: + server.rhelbox.com. 1200 IN A 192.168.56.110 + +> dig client.rhelbox.com + + ;; ANSWER SECTION: + client.rhelbox.com. 86400 IN A 192.168.56.101 + +Check if reverse resolution works : + +> dig -t ptr 101.56.168.192.in-addr.arpa. + + ;; ANSWER SECTION: + 101.56.168.192.in-addr.arpa. 86400 IN PTR client.rhelbox.com. + + +> dig -t ptr 110.56.168.192.in-addr.arpa. + + ;; ANSWER SECTION: + 110.56.168.192.in-addr.arpa. 86400 IN PTR server.rhelbox.com. + + + +## Adding users and groups + +Create *auth_reseller_admin* user group +> ipa group-add auth_reseller_admin --desc="Full access to all Swift accounts" + +Create *auth_rhs_test* user group +> ipa group-add auth_rhs_test --desc="Full access to rhs_test account" + +Create user *auth_admin* user as member of *auth_reseller_admin* user group +> ipa user-add auth_admin --first=Auth --last=Admin --password +> +> ipa group-add-member auth_reseller_admin --users=auth_admin + +Create user *rhs_test_admin* as member of *auth_rhs_test* user group +> ipa user-add rhs_test_admin --first=RHS --last=Admin --password +> +> ipa group-add-member auth_rhs_test --users=rhs_test_admin + +Create user *jsmith* with no relevant group membership +> ipa user-add rhs_test_admin --first=RHS --last=Admin --password + +You can verify users have been added by running +>ipa user-find admin + +NOTE: Every user has to change password on first login. + +[RHEL 6 Identity Management Guide]: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Identity_Management_Guide/ diff --git a/doc/markdown/swiftkerbauth/swiftkerbauth_guide.md b/doc/markdown/swiftkerbauth/swiftkerbauth_guide.md new file mode 100644 index 0000000..ef76ad0 --- /dev/null +++ b/doc/markdown/swiftkerbauth/swiftkerbauth_guide.md @@ -0,0 +1,435 @@ +#swiftkerbauth + +* [Installing Kerberos module for Apache on IPA client] (#httpd-kerb-install) +* [Creating HTTP Service Principal on IPA server] (#http-principal) +* [Installing and configuring swiftkerbauth on IPA client] (#install-swiftkerbauth) +* [Using swiftkerbauth] (#use-swiftkerbauth) + + +## Installing Kerberos module for Apache on IPA client + +Install httpd server with kerberos module: +> yum install httpd mod_auth_kerb +> +> service httpd restart + +Check if auth_kerb_module is loaded : +> httpd -M | grep kerb + +Change httpd log level to debug by adding/changing the following in +*/etc/httpd/conf/httpd.conf* file + + LogLevel debug + +httpd logs are at */var/log/httpd/error_log* for troubleshooting + +If SELinux is enabled, allow Apache to connect to memcache and +activate the changes by running +>setsebool -P httpd_can_network_connect 1 +> +>setsebool -P httpd_can_network_memcache 1 + +***** + + +## Creating HTTP Service Principal on IPA server + +Add a HTTP Kerberos service principal : +> ipa service-add HTTP/client.rhelbox.com@RHELBOX.COM + +Retrieve the HTTP service principal to a keytab file: +> ipa-getkeytab -s server.rhelbox.com -p HTTP/client.rhelbox.com@RHELBOX.COM -k /tmp/http.keytab + +Copy keytab file to client: +> scp /tmp/http.keytab root@192.168.56.101:/etc/httpd/conf/http.keytab + +## Creating HTTP Service Principal on Windows AD server + +Add a HTTP Kerberos service principal: +> c:\>ktpass.exe -princ HTTP/fcclient.winad.com@WINAD.COM -mapuser +> auth_admin@WINAD.COM -pass Redhat*123 -out c:\HTTP.keytab + +Use winscp to copy HTTP.ketab file to /etc/httpd/conf/http.keytab + +***** + + +##Installing and configuring swiftkerbauth on IPA client + +Prerequisites for installing swiftkerbauth +* swift (havana) +* gluster-swift (optional) + +You can install swiftkerbauth using one of these three ways: + +Installing swiftkerbauth from source: +> python setup.py install + +Installing swiftkerbauth using pip: +> pip install swiftkerbauth + +Installing swiftkerbauth from RPMs: +> ./makerpm.sh +> +> rpm -ivh dist/swiftkerbauth-1.0.0-1.noarch.rpm + +Edit */etc/httpd/conf.d/swift-auth.conf* and change KrbServiceName, KrbAuthRealms and Krb5KeyTab parameters accordingly. +More detail on configuring kerberos for apache can be found at: +[auth_kerb_module Configuration][] + +Make /etc/httpd/conf/http.keytab readable by any user : +> chmod 644 /etc/httpd/conf/http.keytab + +And preferably change owner of keytab file to apache : +> chown apache:apache /etc/httpd/conf/http.keytab + +Reload httpd +> service httpd reload + +Make authentication script executable: +> chmod +x /var/www/cgi-bin/swift-auth + +***** + + +##Using swiftkerbauth + +### Adding kerbauth filter in swift pipeline + +Edit */etc/swift/proxy-server.conf* and add a new filter section as follows: + + [filter:kerbauth] + use = egg:swiftkerbauth#kerbauth + ext_authentication_url = http://client.rhelbox.com/cgi-bin/swift-auth + +Add kerbauth to pipeline + + [pipeline:main] + pipeline = catch_errors healthcheck proxy-logging cache proxy-logging kerbauth proxy-server + +If the Swift server is not one of your Gluster nodes, edit +*/etc/swift/fs.conf* and change the following lines in the DEFAULT +section: + + mount_ip = RHS_NODE_HOSTNAME + remote_cluster = yes + +Restart swift to activate kerbauth filer +> swift-init main restart + + +###Examples + +####Authenticate user and get Kerberos ticket + +> kinit auth_admin + +NOTE: curl ignores user specified in -u option. All further curl commands +will use the currently authenticated auth_admin user. + +####Get an authentication token: +> curl -v -u : --negotiate --location-trusted http://client.rhelbox.com:8080/auth/v1.0 + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > GET /auth/v1.0 HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > + < HTTP/1.1 303 See Other + < Content-Type: text/html; charset=UTF-8 + < Location: http://client.rhelbox.com/cgi-bin/swift-auth + < Content-Length: 0 + < X-Trans-Id: txecd415aae89b4320b6145-0052417ea5 + < Date: Tue, 24 Sep 2013 11:59:33 GMT + < + * Connection #0 to host client.rhelbox.com left intact + * Issue another request to this URL: 'http://client.rhelbox.com/cgi-bin/swift-auth' + * About to connect() to client.rhelbox.com port 80 (#1) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 80 (#1) + > GET /cgi-bin/swift-auth HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com + > Accept: */* + > + < HTTP/1.1 401 Unauthorized + < Date: Tue, 24 Sep 2013 11:59:33 GMT + < Server: Apache/2.4.6 (Fedora) mod_auth_kerb/5.4 + < WWW-Authenticate: Negotiate + < WWW-Authenticate: Basic realm="Swift Authentication" + < Content-Length: 381 + < Content-Type: text/html; charset=iso-8859-1 + < + * Ignoring the response-body + * Connection #1 to host client.rhelbox.com left intact + * Issue another request to this URL: 'http://client.rhelbox.com/cgi-bin/swift-auth' + * Re-using existing connection! (#1) with host (nil) + * Connected to (nil) (192.168.56.101) port 80 (#1) + * Server auth using GSS-Negotiate with user '' + > GET /cgi-bin/swift-auth HTTP/1.1 + > Authorization: Negotiate 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 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com + > Accept: */* + > + < HTTP/1.1 200 OK + < Date: Tue, 24 Sep 2013 11:59:33 GMT + < Server: Apache/2.4.6 (Fedora) mod_auth_kerb/5.4 + < WWW-Authenticate: Negotiate YIGZBgkqhkiG9xIBAgICAG+BiTCBhqADAgEFoQMCAQ+iejB4oAMCARKicQRveeZTV/QRJSIOoOWPbZkEmtdug9V5ZcMGXWqAJvCAnrvw9gHbklMyLl8f8jU2e0wU3ehtchLEL4dVeAYgKsnUgw4wGhHu59AZBwSbHRKSpv3I6gWEZqC4NAEuZJFW9ipdUHOiclBQniVXXCsRF/5Y + < X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a + < X-Debug-Remote-User: auth_admin + < X-Debug-Groups: auth_admin,auth_reseller_admin + < X-Debug-Token-Life: 86400s + < X-Debug-Token-Expires: Wed Sep 25 17:29:33 2013 + < Content-Length: 0 + < Content-Type: text/html; charset=UTF-8 + < + * Connection #1 to host (nil) left intact + * Closing connection #0 + * Closing connection #1 + +The header *X-Auth-Token* in response contains the token *AUTH_tk083b8abc92f4a514f34224a181ed568a*. + +####PUT a container +>curl -v -X PUT -H 'X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a' http://client.rhelbox.com:8080/v1/AUTH_myvolume/c1 + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > PUT /v1/AUTH_myvolume/c1 HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a + > + < HTTP/1.1 201 Created + < Content-Length: 0 + < Content-Type: text/html; charset=UTF-8 + < X-Trans-Id: txc420b0ebf9714445900e8-0052418863 + < Date: Tue, 24 Sep 2013 12:41:07 GMT + < + * Connection #0 to host client.rhelbox.com left intact + * Closing connection #0 + +####GET a container listing +> curl -v -X GET -H 'X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a' http://client.rhelbox.com:8080/v1/AUTH_myvolume + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > GET /v1/AUTH_myvolume HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a + > + < HTTP/1.1 200 OK + < Content-Length: 3 + < X-Account-Container-Count: 0 + < Accept-Ranges: bytes + < X-Account-Object-Count: 0 + < X-Bytes-Used: 0 + < X-Timestamp: 1379997117.09468 + < X-Object-Count: 0 + < X-Account-Bytes-Used: 0 + < X-Type: Account + < Content-Type: text/plain; charset=utf-8 + < X-Container-Count: 0 + < X-Trans-Id: tx89826736a1ab4d6aae6e3-00524188dc + < Date: Tue, 24 Sep 2013 12:43:08 GMT + < + c1 + * Connection #0 to host client.rhelbox.com left intact + * Closing connection #0 + +####PUT an object in container +> curl -v -X PUT -H 'X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a' http://client.rhelbox.com:8080/v1/AUTH_myvolume/c1/object1 -d'Hello world' + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > PUT /v1/AUTH_myvolume/c1/object1 HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a + > Content-Length: 11 + > Content-Type: application/x-www-form-urlencoded + > + * upload completely sent off: 11 out of 11 bytes + < HTTP/1.1 201 Created + < Last-Modified: Wed, 25 Sep 2013 06:08:00 GMT + < Content-Length: 0 + < Etag: 3e25960a79dbc69b674cd4ec67a72c62 + < Content-Type: text/html; charset=UTF-8 + < X-Trans-Id: tx01f1b5a430cf4af3897be-0052427dc0 + < Date: Wed, 25 Sep 2013 06:08:01 GMT + < + * Connection #0 to host client.rhelbox.com left intact + * Closing connection #0 + +####Give permission to jsmith to list and download objects from c1 container +> curl -v -X POST -H 'X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a' -H 'X-Container-Read: jsmith' http://client.rhelbox.com:8080/v1/AUTH_myvolume/c1 + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > POST /v1/AUTH_myvolume/c1 HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > X-Auth-Token: AUTH_tk083b8abc92f4a514f34224a181ed568a + > X-Container-Read: jsmith + > + < HTTP/1.1 204 No Content + < Content-Length: 0 + < Content-Type: text/html; charset=UTF-8 + < X-Trans-Id: txcedea3e2557d463eb591d-0052427f60 + < Date: Wed, 25 Sep 2013 06:14:56 GMT + < + * Connection #0 to host client.rhelbox.com left intact + * Closing connection #0 + +####Access container as jsmith + +> kinit jsmith + +Get token for jsmith +> curl -v -u : --negotiate --location-trusted http://client.rhelbox.com:8080/auth/v1.0 + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > GET /auth/v1.0 HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > + < HTTP/1.1 303 See Other + < Content-Type: text/html; charset=UTF-8 + < Location: http://client.rhelbox.com/cgi-bin/swift-auth + < Content-Length: 0 + < X-Trans-Id: txf51e1bf7f8c5496f8cc93-005242800b + < Date: Wed, 25 Sep 2013 06:17:47 GMT + < + * Connection #0 to host client.rhelbox.com left intact + * Issue another request to this URL: 'http://client.rhelbox.com/cgi-bin/swift-auth' + * About to connect() to client.rhelbox.com port 80 (#1) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 80 (#1) + > GET /cgi-bin/swift-auth HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com + > Accept: */* + > + < HTTP/1.1 401 Unauthorized + < Date: Wed, 25 Sep 2013 06:17:47 GMT + < Server: Apache/2.4.6 (Fedora) mod_auth_kerb/5.4 + < WWW-Authenticate: Negotiate + < WWW-Authenticate: Basic realm="Swift Authentication" + < Content-Length: 381 + < Content-Type: text/html; charset=iso-8859-1 + < + * Ignoring the response-body + * Connection #1 to host client.rhelbox.com left intact + * Issue another request to this URL: 'http://client.rhelbox.com/cgi-bin/swift-auth' + * Re-using existing connection! (#1) with host (nil) + * Connected to (nil) (192.168.56.101) port 80 (#1) + * Server auth using GSS-Negotiate with user '' + > GET /cgi-bin/swift-auth HTTP/1.1 + > Authorization: Negotiate YIICWAYJKoZIhvcSAQICAQBuggJHMIICQ6ADAgEFoQMCAQ6iBwMFACAAAACjggFbYYIBVzCCAVOgAwIBBaENGwtSSEVMQk9YLkNPTaIlMCOgAwIBA6EcMBobBEhUVFAbEmNsaWVudC5yaGVsYm94LmNvbaOCARQwggEQoAMCARKhAwIBAaKCAQIEgf/+3OaXYCSEjcsjU3t3lOLcYG84GBP9Kj9YTHc7yVMlcam4ivCwMqCkzxgvNo2E3a5KSWyFwngeX4b/QFbCKPXA4sfBibZRkeMk5gr2f0MLI3gWEAIYq7bJLre04bnkD2F0MzijPJrOLIx1KmFe08UGWCEmnG2uj07lvIR1RwV/7dMM4J1B+KKvDVKA0LxahwPIpx8oOON2yMGcstrBAHBBk5pmpt1Gg9Lh7xdNPsjP0IfI5Q0zkGCRBKpvpXymP1lQpQXlHbqkdBYOmG4+p/R+vIosO4ui1G6GWE9t71h3AqW61CcCj3/oOjZsG56k8HMSNk/+3mfUTP86nzLRGkekgc4wgcugAwIBEqKBwwSBwPsG9nGloEnOsA1abP4R1/yUDcikjjwKiacvZ+cu7bWEzu3L376k08U8C2YIClyUJy3Grt68LxhnfZ65VCZ5J5IOLiXOJnHBIoJ1L4GMYp4EgZzHvI7R3U3DApMzNWZwc1MsSF5UGhmLwxSevDLetJHjgKzKNteRyVN/8CFgjSBEjGSN1Qgy1RZHuQR9d3JHPczONZ4+ZgStfy+I1m2IUIgW3+4JGFVafHiBQVwSWRNfdXFgI3wBz7slntd7r3qMWA== + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com + > Accept: */* + > + < HTTP/1.1 200 OK + < Date: Wed, 25 Sep 2013 06:17:47 GMT + < Server: Apache/2.4.6 (Fedora) mod_auth_kerb/5.4 + < WWW-Authenticate: Negotiate YIGYBgkqhkiG9xIBAgICAG+BiDCBhaADAgEFoQMCAQ+ieTB3oAMCARKicARuH2YpjFrtgIhGr5nO7gh/21EvGH9tayRo5A3pw5pxD1B1036ePLG/x98OdMrSflse5s8ttz8FmvRphCFJa8kfYtnWULgoFLF2F2a1zBdSo2oCA0R05YFwArNhkg6ou5o7wWZkERHK33CKlhudSj8= + < X-Auth-Token: AUTH_tkb5a20eb8207a819e76619431c8410447 + < X-Debug-Remote-User: jsmith + < X-Debug-Groups: jsmith + < X-Debug-Token-Life: 86400s + < X-Debug-Token-Expires: Thu Sep 26 11:47:47 2013 + < Content-Length: 0 + < Content-Type: text/html; charset=UTF-8 + < + * Connection #1 to host (nil) left intact + * Closing connection #0 + * Closing connection #1 + +List the container using authentication token for jsmith: +> curl -v -X GET -H 'X-Auth-Token: AUTH_tkb5a20eb8207a819e76619431c8410447' http://client.rhelbox.com:8080/v1/AUTH_myvolume/c1 + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > GET /v1/AUTH_myvolume/c1 HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > X-Auth-Token: AUTH_tkb5a20eb8207a819e76619431c8410447 + > + < HTTP/1.1 200 OK + < Content-Length: 8 + < X-Container-Object-Count: 0 + < Accept-Ranges: bytes + < X-Timestamp: 1 + < X-Container-Bytes-Used: 0 + < Content-Type: text/plain; charset=utf-8 + < X-Trans-Id: tx575215929c654d9f9f284-00524280a4 + < Date: Wed, 25 Sep 2013 06:20:20 GMT + < + object1 + * Connection #0 to host client.rhelbox.com left intact + * Closing connection #0 + +Downloading the object as jsmith: +> curl -v -X GET -H 'X-Auth-Token: AUTH_tkb5a20eb8207a819e76619431c8410447' http://client.rhelbox.com:8080/v1/AUTH_myvolume/c1/object1 + + * About to connect() to client.rhelbox.com port 8080 (#0) + * Trying 192.168.56.101... + * connected + * Connected to client.rhelbox.com (192.168.56.101) port 8080 (#0) + > GET /v1/AUTH_myvolume/c1/object1 HTTP/1.1 + > User-Agent: curl/7.27.0 + > Host: client.rhelbox.com:8080 + > Accept: */* + > X-Auth-Token: AUTH_tkb5a20eb8207a819e76619431c8410447 + > + < HTTP/1.1 200 OK + < Content-Length: 11 + < Accept-Ranges: bytes + < Last-Modified: Wed, 25 Sep 2013 06:08:00 GMT + < Etag: 3e25960a79dbc69b674cd4ec67a72c62 + < X-Timestamp: 1380089280.98829 + < Content-Type: application/x-www-form-urlencoded + < X-Trans-Id: tx19b5cc3847854f40a6ca8-00524281aa + < Date: Wed, 25 Sep 2013 06:24:42 GMT + < + * Connection #0 to host client.rhelbox.com left intact + Hello world* Closing connection #0 + +For curl to follow the redirect, you need to specify additional +options. With these, and with a current Kerberos ticket, you should +get the Kerberos user's cached authentication token, or a new one if +the previous token has expired. + +> curl -v -u : --negotiate --location-trusted -X GET http://client.rhelbox.com:8080/v1/AUTH_myvolume/c1/object1 + +The --negotiate option is for curl to perform Kerberos authentication and +--location-trusted is for curl to follow the redirect. + +[auth_kerb_module Configuration]: http://modauthkerb.sourceforge.net/configure.html -- cgit