[crmsh-4.6] Dev: bootstrap: implement ssh-agent support (jsc#PED-5774)

.github/workflows/crmsh-ci.yml

@@ -333,6 +333,18 @@ jobs:
         $DOCKER_SCRIPT `$GET_INDEX_OF user_access`
     - uses: codecov/codecov-action@v3
 
+  functional_test_ssh_agent:
+    runs-on: ubuntu-20.04
+    timeout-minutes: 40
+    steps:
+    - uses: actions/checkout@v3
+    - name: functional test for user access
+      run:  |
+        echo '{ "exec-opts": ["native.cgroupdriver=systemd"] }' | sudo tee /etc/docker/daemon.json
+        sudo systemctl restart docker.service
+        $DOCKER_SCRIPT `$GET_INDEX_OF ssh_agent` && $DOCKER_SCRIPT -d && $DOCKER_SCRIPT -u `$GET_INDEX_OF ssh_agent`
+    - uses: codecov/codecov-action@v3
+
   original_regression_test:
     runs-on: ubuntu-20.04
     timeout-minutes: 40

codecov.yml

@@ -9,6 +9,6 @@ coverage:
 codecov: 
   token: 16b01c29-3b23-4923-b33a-4d26a49d80c4
   notify:
-    after_n_builds: 22
+    after_n_builds: 23
 comment:
-  after_n_builds: 22
+  after_n_builds: 23

crmsh/config.py

@@ -239,6 +239,7 @@ def get(self, value):
         'pager': opt_program('PAGER', ('less', 'more', 'pg')),
         'user': opt_string(''),
         'hosts': opt_list([]), # 'alice@host1, bob@host2'
+        'no_generating_ssh_key': opt_boolean('no'),
         'skill_level': opt_choice('expert', ('operator', 'administrator', 'expert')),
         'sort_elements': opt_boolean('yes'),
         'check_frequency': opt_choice('always', ('always', 'on-verify', 'never')),

crmsh/healthcheck.py

@@ -147,12 +147,10 @@ def fix_cluster(self, nodes: typing.Iterable[str], ask: typing.Callable[[str], N
         remote_nodes = set(nodes)
         remote_nodes.remove(local_node)
         remote_nodes = list(remote_nodes)
-        local_user = crmsh.utils.user_pair_for_ssh(remote_nodes[0])[0]
-        crmsh.bootstrap.init_ssh_impl(
-            local_user,
-            None,
-            [(crmsh.utils.user_pair_for_ssh(node)[1], node) for node in remote_nodes],
-        )
+        crmsh.bootstrap.configure_ssh_key('hacluster')
+        crmsh.bootstrap.swap_key_for_hacluster(remote_nodes)
+        for node in remote_nodes:
+            crmsh.bootstrap.change_user_shell('hacluster', node)
 
 
 def main_check_local(args) -> int:

crmsh/prun/prun.py

@@ -151,14 +151,17 @@ def pcopy_to_remote(
     script = "put {} '{}' '{}'\n".format(flags, src, dst)
     ssh = None
     try:
-        ssh = tempfile.NamedTemporaryFile('w', encoding='utf-8', delete=False)
-        os.fchmod(ssh.fileno(), 0o700)
         # sftp -S does not parse args, it accepts only a single executable. So we create one.
-        ssh.write(f'''#!/bin/sh
+        if local_sudoer == crmsh.userdir.getuser():
+            tasks = [_build_copy_task('', script, host) for host in hosts]
+        else:
+            ssh = tempfile.NamedTemporaryFile('w', encoding='utf-8', delete=False)
+            os.fchmod(ssh.fileno(), 0o700)
+            ssh.write(f'''#!/bin/sh
 exec sudo -u {local_sudoer} ssh "$@"''')
         # It is necessary to close the file before executing, or we will get an EBUSY.
-        ssh.close()
-        tasks = [_build_copy_task("-S '{}'".format(ssh.name), script, host) for host in hosts]
+            ssh.close()
+            tasks = [_build_copy_task("-S '{}'".format(ssh.name), script, host) for host in hosts]
         runner = Runner(concurrency)
         for task in tasks:
             runner.add_task(task)
@@ -209,13 +212,16 @@ def pfetch_from_remote(
     local_sudoer, _ = UserOfHost.instance().user_pair_for_ssh(hosts[0])
     ssh = None
     try:
-        ssh = tempfile.NamedTemporaryFile('w', encoding='utf-8', delete=False)
-        os.fchmod(ssh.fileno(), 0o700)
-        ssh.write(f'''#!/bin/sh
-exec sudo -u {local_sudoer} ssh "$@"''')
-        # It is necessary to close the file before executing
-        ssh.close()
-        tasks = [_build_fetch_task("-S '{}'".format(ssh.name), host, src, dst, flags) for host in hosts]
+        if local_sudoer == crmsh.userdir.getuser():
+            tasks = [_build_fetch_task('', host, src, dst, flags) for host in hosts]
+        else:
+            ssh = tempfile.NamedTemporaryFile('w', encoding='utf-8', delete=False)
+            os.fchmod(ssh.fileno(), 0o700)
+            ssh.write(f'''#!/bin/sh
+    exec sudo -u {local_sudoer} ssh "$@"''')
+            # It is necessary to close the file before executing
+            ssh.close()
+            tasks = [_build_fetch_task("-S '{}'".format(ssh.name), host, src, dst, flags) for host in hosts]
         runner = Runner(concurrency)
         for task in tasks:
             runner.add_task(task)

crmsh/report/collect.py

@@ -10,6 +10,7 @@
 import pwd
 import datetime
 
+import crmsh.user_of_host
 from crmsh import log, sh
 from crmsh import utils as crmutils
 from crmsh.report import constants, utillib
@@ -56,7 +57,14 @@
     """
     # since the "trace_dir" attribute been removed from cib after untrace
     # need to parse crmsh log file to extract custom trace ra log directory on each node
-    shell = sh.cluster_shell()
+    if crmsh.user_of_host.instance().use_ssh_agent():
+        shell = sh.ClusterShell(
+            sh.LocalShell(additional_environ={'SSH_AUTH_SOCK': os.environ.get('SSH_AUTH_SOCK', '')}),
+            crmsh.user_of_host.instance(),
+            forward_ssh_agent=True,
+        )
+    else:
+        shell = sh.cluster_shell()
     log_contents = ""
     cmd = "grep 'INFO: Trace for .* is written to ' {}*|grep -v 'collect'".format(log.CRMSH_LOG_FILE)
     for node in crmutils.list_cluster_nodes():

crmsh/report/utillib.py

@@ -417,7 +417,7 @@
         res = re.search("PRETTY_NAME=\"(.*)\"", read_from_file(constants.OSRELEASE))
     elif which("lsb_release"):
         logger.debug("Using lsb_release to get distribution info")
-        out = sh.cluster_shell().get_stdout_or_raise_error("lsb_release -d")
+        out = sh.LocalShell().get_stdout_or_raise_error("lsb_release -d")
         res = re.search("Description:\s+(.*)", out)
     return res.group(1) if res else "Unknown"